diff options
| author | George Hazan <ghazan@miranda.im> | 2018-07-11 12:29:02 +0300 |
|---|---|---|
| committer | George Hazan <ghazan@miranda.im> | 2018-07-11 12:29:10 +0300 |
| commit | 92a5c27c4ea88f2f7c4810c789f7b5aebe06d03c (patch) | |
| tree | e24f375b06c781077d22028a5d86f2d56585dc6c /plugins/Dbx_mdbx | |
| parent | 09693d256f7a0ec0c24dce56f9aca87d3a01856d (diff) | |
libmdbx extracted to separate dll
Diffstat (limited to 'plugins/Dbx_mdbx')
80 files changed, 6 insertions, 30629 deletions
diff --git a/plugins/Dbx_mdbx/dbx_mdbx.vcxproj b/plugins/Dbx_mdbx/dbx_mdbx.vcxproj index 4cc04efd5c..4b2e3bcc38 100644 --- a/plugins/Dbx_mdbx/dbx_mdbx.vcxproj +++ b/plugins/Dbx_mdbx/dbx_mdbx.vcxproj @@ -18,6 +18,11 @@ <Platform>x64</Platform>
</ProjectConfiguration>
</ItemGroup>
+ <ItemGroup>
+ <ProjectReference Include="..\..\libs\libmdbx\libmdbx.vcxproj">
+ <Project>{6d19209b-ece7-4b9c-941c-0aa2b484f199}</Project>
+ </ProjectReference>
+ </ItemGroup>
<PropertyGroup Label="Globals">
<ProjectName>Dbx_mdbx</ProjectName>
<ProjectGuid>{E0ACDEA0-0AC9-4431-8CA3-6B0CCACB2E18}</ProjectGuid>
@@ -26,28 +31,9 @@ <ImportGroup Label="PropertySheets">
<Import Project="$(ProjectDir)..\..\build\vc.common\plugin.props" />
</ImportGroup>
- <ItemGroup>
- <ClCompile Include="src\libmdbx\src\lck-windows.c">
- <PrecompiledHeader>NotUsing</PrecompiledHeader>
- </ClCompile>
- <ClCompile Include="src\libmdbx\src\mdbx.c">
- <PrecompiledHeader>NotUsing</PrecompiledHeader>
- </ClCompile>
- <ClCompile Include="src\libmdbx\src\osal.c">
- <PrecompiledHeader>NotUsing</PrecompiledHeader>
- </ClCompile>
- <ClCompile Include="src\libmdbx\src\version.c">
- <PrecompiledHeader>NotUsing</PrecompiledHeader>
- </ClCompile>
- </ItemGroup>
- <ItemGroup>
- <ClInclude Include="src\libmdbx\mdbx.h" />
- </ItemGroup>
<ItemDefinitionGroup>
<ClCompile>
<ExceptionHandling>Sync</ExceptionHandling>
- <PreprocessorDefinitions Condition="'$(Configuration)'=='Debug'">MDB_DEBUG=5;%(PreprocessorDefinitions)</PreprocessorDefinitions>
- <PreprocessorDefinitions>MDBX_CONFIG_MANUAL_TLS_CALLBACK=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
</ClCompile>
</ItemDefinitionGroup>
</Project>
\ No newline at end of file diff --git a/plugins/Dbx_mdbx/src/init.cpp b/plugins/Dbx_mdbx/src/init.cpp index 8998211776..391fe88b56 100644 --- a/plugins/Dbx_mdbx/src/init.cpp +++ b/plugins/Dbx_mdbx/src/init.cpp @@ -47,16 +47,6 @@ CMPlugin::CMPlugin() : /////////////////////////////////////////////////////////////////////////////////////////
-EXTERN_C void NTAPI tls_callback(PVOID module, DWORD reason, PVOID reserved);
-
-BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD reason, LPVOID reserved)
-{
- mdbx_dll_callback(hInstDLL, reason, reserved);
- return TRUE;
-}
-
-/////////////////////////////////////////////////////////////////////////////////////////
-
extern "C" __declspec(dllexport) const MUUID MirandaInterfaces[] = { MIID_DATABASE, MIID_LAST };
/////////////////////////////////////////////////////////////////////////////////////////
diff --git a/plugins/Dbx_mdbx/src/libmdbx/.circleci/config.yml b/plugins/Dbx_mdbx/src/libmdbx/.circleci/config.yml deleted file mode 100644 index 91e11a4bfe..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/.circleci/config.yml +++ /dev/null @@ -1,20 +0,0 @@ -version: 2 -jobs: - build: - docker: - - image: circleci/buildpack-deps:artful - environment: - - TESTDB: /tmp/test.db - - TESTLOG: /tmp/test.log - steps: - - checkout - - run: make all - - run: ulimit -c unlimited && make check - - run: - command: | - mkdir -p /tmp/artifacts - mv -t /tmp/artifacts $TESTLOG $TESTDB core.* - when: on_fail - - store_artifacts: - path: /tmp/artifacts - destination: test-artifacts diff --git a/plugins/Dbx_mdbx/src/libmdbx/.clang-format b/plugins/Dbx_mdbx/src/libmdbx/.clang-format deleted file mode 100644 index 6c59ef3a39..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/.clang-format +++ /dev/null @@ -1,3 +0,0 @@ -BasedOnStyle: LLVM -Standard: Cpp11 -ReflowComments: true diff --git a/plugins/Dbx_mdbx/src/libmdbx/.gitignore b/plugins/Dbx_mdbx/src/libmdbx/.gitignore deleted file mode 100644 index 2ea34c8009..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/.gitignore +++ /dev/null @@ -1,38 +0,0 @@ -*.[ao] -*.bak -*.exe -*.gcda -*.gcno -*.gcov -*.lo -*.orig -*.rej -*.so -*[~#] -.idea -.le.ini -.vs/ -Win32/ -build-* -cmake-build-* -core -example -libmdbx.creator.user -mdbx-dll.VC.VC.opendb -mdbx-dll.VC.db -mdbx-dll.vcxproj.filters -mdbx_chk -mdbx_copy -mdbx_dump -mdbx_load -mdbx_stat -mdbx_test -test.log -test/test.vcxproj.user -test/tmp.db -test/tmp.db-lck -tmp.db -tmp.db-lck -valgrind.* -x64/ -x86/ diff --git a/plugins/Dbx_mdbx/src/libmdbx/.travis.yml b/plugins/Dbx_mdbx/src/libmdbx/.travis.yml deleted file mode 100644 index 590944bb91..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/.travis.yml +++ /dev/null @@ -1,30 +0,0 @@ -language: c -sudo: required -dist: trusty - -compiler: -- gcc -- clang - -os: -- linux - -script: if [ "${COVERITY_SCAN_BRANCH}" != 1 ]; then make all check; fi - -env: - global: - - secure: "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" - -before_install: - - echo -n | openssl s_client -connect scan.coverity.com:443 | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' | sudo tee -a /etc/ssl/certs/ca- - -addons: - coverity_scan: - project: - name: "ReOpen/libmdbx" - version: 0.1 - description: "Build submitted via Travis CI" - notification_email: leo@yuriev.ru - build_command_prepend: "make clean" - build_command: "make all -j 4" - branch_pattern: coverity_scan diff --git a/plugins/Dbx_mdbx/src/libmdbx/AUTHORS b/plugins/Dbx_mdbx/src/libmdbx/AUTHORS deleted file mode 100644 index 0a1a199682..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/AUTHORS +++ /dev/null @@ -1,31 +0,0 @@ -Contributors -============ - -Alexey Naumov <alexey.naumov@gmail.com> -Chris Mikkelson <cmikk@qwest.net> -Claude Brisson <claude.brisson@gmail.com> -David Barbour <dmbarbour@gmail.com> -David Wilson <dw@botanicus.net> -dreamsxin <dreamsxin@126.com> -Hallvard Furuseth <hallvard@openldap.org>, <h.b.furuseth@usit.uio.no> -Heiko Becker <heirecka@exherbo.org> -Howard Chu <hyc@openldap.org>, <hyc@symas.com> -Ignacio Casal Quinteiro <ignacio.casal@nice-software.com> -James Rouzier <rouzier@gmail.com> -Jean-Christophe DUBOIS <jcd@tribudubois.net> -John Hewson <john@jahewson.com> -Klaus Malorny <klaus.malorny@knipp.de> -Kurt Zeilenga <kurt.zeilenga@isode.com> -Leonid Yuriev <leo@yuriev.ru>, <lyuryev@ptsecurity.com> -Lorenz Bauer <lmb@cloudflare.com> -Luke Yeager <lyeager@nvidia.com> -Martin Hedenfalk <martin@bzero.se> -Ondrej Kuznik <ondrej.kuznik@acision.com> -Orivej Desh <orivej@gmx.fr> -Oskari Timperi <oskari.timperi@iki.fi> -Pavel Medvedev <pmedvedev@gmail.com> -Philipp Storz <philipp.storz@bareos.com> -Quanah Gibson-Mount <quanah@openldap.org> -Salvador Ortiz <sog@msg.com.mx> -Sebastien Launay <sebastien@slaunay.fr> -Vladimir Romanov <vromanov@gmail.com> diff --git a/plugins/Dbx_mdbx/src/libmdbx/CMakeLists.txt b/plugins/Dbx_mdbx/src/libmdbx/CMakeLists.txt deleted file mode 100644 index b664075556..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/CMakeLists.txt +++ /dev/null @@ -1,193 +0,0 @@ -cmake_minimum_required(VERSION 2.8.7) -set(TARGET mdbx) -project(${TARGET}) - -message(WARNING " -*************************************************************** - MDBX is under active development, database format and API - aren't stable at least until 2018Q3. New version won't be - backwards compatible. Main focus of the rework is to provide - clear and robust API and new features. -*************************************************************** -") - -set(MDBX_VERSION_MAJOR 0) -set(MDBX_VERSION_MINOR 1) -set(MDBX_VERSION_RELEASE 3) -set(MDBX_VERSION_REVISION 1) - -set(MDBX_VERSION_STRING ${MDBX_VERSION_MAJOR}.${MDBX_VERSION_MINOR}.${MDBX_VERSION_RELEASE}) - -enable_language(C) -enable_language(CXX) - -set(CMAKE_CXX_STANDARD 11) -set(CMAKE_CXX_STANDARD_REQUIRED on) - -add_definitions(-DNDEBUG=1 -DMDBX_DEBUG=0 -DLIBMDBX_EXPORTS=1 -D_GNU_SOURCE=1) - -find_package(Threads REQUIRED) - -get_directory_property(hasParent PARENT_DIRECTORY) -if(hasParent) - set(STANDALONE_BUILD 0) -else() - set(STANDALONE_BUILD 1) - enable_testing() - - if (CMAKE_C_COMPILER_ID MATCHES GNU) - set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O2") - set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g3") - set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall") - set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror") - set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wextra") - set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -ffunction-sections") - set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC") - set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fvisibility=hidden") - set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu11") - set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pthread") - endif() - - if (CMAKE_CXX_COMPILER_ID MATCHES GNU) - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -W") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wpointer-arith") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-sign-compare") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wformat-security") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Woverloaded-virtual") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wwrite-strings") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fmax-errors=20") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=hidden") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unused-parameter -Wunused-function -Wunused-variable -Wunused-value -Wmissing-declarations") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-missing-field-initializers") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wcast-qual") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ggdb") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-omit-frame-pointer") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-strict-aliasing") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -finline-functions-called-once") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-packed-bitfield-compat") - - set(CMAKE_CXX_FLAGS_DEBUG "-O0 -g3") - set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O3 -g3") - endif() - - if (COVERAGE) - if (NOT "${CMAKE_BUILD_TYPE}" STREQUAL "Debug") - message(FATAL_ERROR "Coverage requires -DCMAKE_BUILD_TYPE=Debug Current value=${CMAKE_BUILD_TYPE}") - endif() - - message(STATUS "Setting coverage compiler flags") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -ggdb3 -O0 --coverage -fprofile-arcs -ftest-coverage") - set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g -ggdb3 -O0 --coverage -fprofile-arcs -ftest-coverage") - add_definitions(-DCOVERAGE_TEST) - endif() - - if (NOT TRAVIS) - set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -fsanitize=address -fsanitize=leak -fstack-protector-strong -static-libasan") - endif() -endif() - -set(${TARGET}_SRC - mdbx.h - src/bits.h - src/defs.h - src/lck-posix.c - src/mdbx.c - src/osal.c - src/osal.h - src/version.c - ) - -add_library(${TARGET}_STATIC STATIC - ${${TARGET}_SRC} - ) - -add_library(${TARGET} ALIAS ${TARGET}_STATIC) - -add_library(${TARGET}_SHARED SHARED - ${${TARGET}_SRC} - ) - -set_target_properties(${TARGET}_SHARED PROPERTIES - VERSION ${MDBX_VERSION_STRING} - SOVERSION ${MDBX_VERSION_MAJOR} - OUTPUT_NAME ${TARGET} - CLEAN_DIRECT_OUTPUT 1 - ) - -set_target_properties(${TARGET}_STATIC PROPERTIES - VERSION ${MDBX_VERSION_STRING} - SOVERSION ${MDBX_VERSION_MAJOR} - OUTPUT_NAME ${TARGET} - CLEAN_DIRECT_OUTPUT 1 - ) - -target_include_directories(${TARGET}_STATIC PUBLIC - ${CMAKE_CURRENT_SOURCE_DIR}) -target_include_directories(${TARGET}_SHARED PUBLIC - ${CMAKE_CURRENT_SOURCE_DIR}) - -target_link_libraries(${TARGET}_STATIC ${CMAKE_THREAD_LIBS_INIT}) -target_link_libraries(${TARGET}_SHARED ${CMAKE_THREAD_LIBS_INIT}) -if(UNIX AND NOT APPLE) - target_link_libraries(${TARGET}_STATIC rt) - target_link_libraries(${TARGET}_SHARED rt) -endif() - -install(TARGETS ${TARGET}_STATIC DESTINATION ${CMAKE_INSTALL_PREFIX}/lib64 COMPONENT mdbx) -install(TARGETS ${TARGET}_SHARED DESTINATION ${CMAKE_INSTALL_PREFIX}/lib64 COMPONENT mdbx) -install(FILES mdbx.h DESTINATION ${CMAKE_INSTALL_PREFIX}/include COMPONENT mdbx-devel) - -add_subdirectory(src/tools) -add_subdirectory(test) -add_subdirectory(test/pcrf) -add_subdirectory(tutorial) - -############################################################################## - -set(CPACK_GENERATOR "RPM") -set(CPACK_RPM_COMPONENT_INSTALL ON) - -# Version -if (NOT "$ENV{BUILD_NUMBER}" STREQUAL "") - set(CPACK_PACKAGE_RELEASE $ENV{BUILD_NUMBER}) -else() - if (NOT "$ENV{CI_PIPELINE_ID}" STREQUAL "") - set(CPACK_PACKAGE_RELEASE $ENV{CI_PIPELINE_ID}) - else() - set(CPACK_PACKAGE_RELEASE 1) - endif() -endif() -set(CPACK_RPM_PACKAGE_RELEASE ${CPACK_PACKAGE_RELEASE}) - -set(CPACK_PACKAGE_VERSION ${MDBX_VERSION_STRING}) -set(CPACK_PACKAGE_VERSION_FULL ${CPACK_PACKAGE_VERSION}-${CPACK_PACKAGE_RELEASE}) - -set(CPACK_RPM_mdbx-devel_PACKAGE_REQUIRES "mdbx = ${CPACK_PACKAGE_VERSION}") - -set(CPACK_RPM_SPEC_INSTALL_POST "/bin/true") -set(CPACK_RPM_mdbx_PACKAGE_NAME mdbx) -set(CPACK_RPM_mdbx-devel_PACKAGE_NAME mdbx-devel) -set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "The revised and extended descendant of Symas LMDB") - -set(CPACK_PACKAGE_VENDOR "???") -set(CPACK_PACKAGE_CONTACT "Vladimir Romanov") -set(CPACK_PACKAGE_RELOCATABLE false) -set(CPACK_RPM_PACKAGE_ARCHITECTURE "x86_64") -set(CPACK_RPM_PACKAGE_REQUIRES "") -set(CPACK_RPM_PACKAGE_GROUP "Applications/Database") - -set(CPACK_RPM_mdbx_FILE_NAME "${CPACK_RPM_mdbx_PACKAGE_NAME}-${CPACK_PACKAGE_VERSION_FULL}.${CPACK_RPM_PACKAGE_ARCHITECTURE}.rpm") -set(CPACK_RPM_mdbx-devel_FILE_NAME "${CPACK_RPM_mdbx-devel_PACKAGE_NAME}-${CPACK_PACKAGE_VERSION_FULL}.${CPACK_RPM_PACKAGE_ARCHITECTURE}.rpm") - -set(CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST_ADDITION - /usr/local - /usr/local/bin - /usr/local/lib64 - /usr/local/include - /usr/local/man - /usr/local/man/man1 - ) - -include(CPack) diff --git a/plugins/Dbx_mdbx/src/libmdbx/COPYRIGHT b/plugins/Dbx_mdbx/src/libmdbx/COPYRIGHT deleted file mode 100644 index 7c2fd24c78..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/COPYRIGHT +++ /dev/null @@ -1,22 +0,0 @@ -Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru>. -Copyright 2011-2015 Howard Chu, Symas Corp. -Copyright 2015,2016 Peter-Service R&D LLC. -All rights reserved. - -Redistribution and use in source and binary forms, with or without -modification, are permitted only as authorized by the OpenLDAP -Public License. - -A copy of this license is available in the file LICENSE in the -top-level directory of the distribution or, alternatively, at -<http://www.OpenLDAP.org/license.html>. - -OpenLDAP is a registered trademark of the OpenLDAP Foundation. - -Individual files and/or contributed packages may be copyright by -other parties and/or subject to additional restrictions. - -This work also contains materials derived from public sources. - -Additional information about OpenLDAP can be obtained at -<http://www.openldap.org/>. diff --git a/plugins/Dbx_mdbx/src/libmdbx/LICENSE b/plugins/Dbx_mdbx/src/libmdbx/LICENSE deleted file mode 100644 index 05ad7571e4..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/LICENSE +++ /dev/null @@ -1,47 +0,0 @@ -The OpenLDAP Public License - Version 2.8, 17 August 2003 - -Redistribution and use of this software and associated documentation -("Software"), with or without modification, are permitted provided -that the following conditions are met: - -1. Redistributions in source form must retain copyright statements - and notices, - -2. Redistributions in binary form must reproduce applicable copyright - statements and notices, this list of conditions, and the following - disclaimer in the documentation and/or other materials provided - with the distribution, and - -3. Redistributions must contain a verbatim copy of this document. - -The OpenLDAP Foundation may revise this license from time to time. -Each revision is distinguished by a version number. You may use -this Software under terms of this license revision or under the -terms of any subsequent revision of the license. - -THIS SOFTWARE IS PROVIDED BY THE OPENLDAP FOUNDATION AND ITS -CONTRIBUTORS ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, -INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY -AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT -SHALL THE OPENLDAP FOUNDATION, ITS CONTRIBUTORS, OR THE AUTHOR(S) -OR OWNER(S) OF THE SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT, -INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, -BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; -LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER -CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT -LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN -ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE -POSSIBILITY OF SUCH DAMAGE. - -The names of the authors and copyright holders must not be used in -advertising or otherwise to promote the sale, use or other dealing -in this Software without specific, written prior permission. Title -to copyright in this Software shall at all times remain with copyright -holders. - -OpenLDAP is a registered trademark of the OpenLDAP Foundation. - -Copyright 1999-2003 The OpenLDAP Foundation, Redwood City, -California, USA. All Rights Reserved. Permission to copy and -distribute verbatim copies of this document is granted. diff --git a/plugins/Dbx_mdbx/src/libmdbx/Makefile b/plugins/Dbx_mdbx/src/libmdbx/Makefile deleted file mode 100644 index dabf2f98e7..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/Makefile +++ /dev/null @@ -1,217 +0,0 @@ -# GNU Makefile for libmdbx, https://github.com/leo-yuriev/libmdbx - -######################################################################## -# Configuration. The compiler options must enable threaded compilation. -# -# Preprocessor macros (for XCFLAGS) of interest... -# Note that the defaults should already be correct for most -# platforms; you should not need to change any of these. -# Read their descriptions in mdb.c if you do. There may be -# other macros of interest. You should read mdb.c -# before changing any of them. -# - -# install sandbox -SANDBOX ?= - -# install prefixes (inside sandbox) -prefix ?= /usr/local -mandir ?= $(prefix)/man - -# lib/bin suffix for multiarch/biarch, e.g. '.x86_64' -suffix ?= - -CC ?= gcc -CXX ?= g++ -CFLAGS ?= -O2 -g3 -Wall -Werror -Wextra -ffunction-sections -fPIC -fvisibility=hidden - -XCFLAGS ?= -DNDEBUG=1 -DMDBX_DEBUG=0 -DLIBMDBX_EXPORTS=1 -CFLAGS += -D_GNU_SOURCE=1 -std=gnu11 -pthread $(XCFLAGS) -CXXFLAGS = -std=c++11 $(filter-out -std=gnu11,$(CFLAGS)) -TESTDB ?= $(shell [ -d /dev/shm ] && echo /dev/shm || echo /tmp)/mdbx-test.db -TESTLOG ?= $(shell [ -d /dev/shm ] && echo /dev/shm || echo /tmp)/mdbx-test.log - -# LY: '--no-as-needed,-lrt' for ability to built with modern glibc, but then run with the old -LDFLAGS ?= -Wl,--gc-sections,-z,relro,-O,--no-as-needed,-lrt -EXE_LDFLAGS ?= -pthread -lrt - -# LY: just for benchmarking -IOARENA ?= $(shell \ - (test -x ../ioarena/@BUILD/src/ioarena && echo ../ioarena/@BUILD/src/ioarena) || \ - (test -x ../../@BUILD/src/ioarena && echo ../../@BUILD/src/ioarena) || \ - (test -x ../../src/ioarena && echo ../../src/ioarena) || which ioarena) -NN ?= 25000000 - -######################################################################## - -HEADERS := mdbx.h -LIBRARIES := libmdbx.a libmdbx.so -TOOLS := mdbx_stat mdbx_copy mdbx_dump mdbx_load mdbx_chk -MANPAGES := mdbx_stat.1 mdbx_copy.1 mdbx_dump.1 mdbx_load.1 -SHELL := /bin/bash - -CORE_SRC := $(filter-out src/lck-windows.c, $(wildcard src/*.c)) -CORE_INC := $(wildcard src/*.h) -CORE_OBJ := $(patsubst %.c,%.o,$(CORE_SRC)) -TEST_SRC := $(filter-out test/osal-windows.cc, $(wildcard test/*.cc)) -TEST_INC := $(wildcard test/*.h) -TEST_OBJ := $(patsubst %.cc,%.o,$(TEST_SRC)) - -.PHONY: mdbx all install clean check coverage - -all: $(LIBRARIES) $(TOOLS) mdbx_test example - -mdbx: libmdbx.a libmdbx.so - -example: mdbx.h tutorial/sample-mdbx.c libmdbx.so - $(CC) $(CFLAGS) -I. tutorial/sample-mdbx.c ./libmdbx.so -o example - -tools: $(TOOLS) - -install: $(LIBRARIES) $(TOOLS) $(HEADERS) - mkdir -p $(SANDBOX)$(prefix)/bin$(suffix) \ - && cp -t $(SANDBOX)$(prefix)/bin$(suffix) $(TOOLS) && \ - mkdir -p $(SANDBOX)$(prefix)/lib$(suffix) \ - && cp -t $(SANDBOX)$(prefix)/lib$(suffix) $(LIBRARIES) && \ - mkdir -p $(SANDBOX)$(prefix)/include \ - && cp -t $(SANDBOX)$(prefix)/include $(HEADERS) && \ - mkdir -p $(SANDBOX)$(mandir)/man1 \ - && cp -t $(SANDBOX)$(mandir)/man1 $(MANPAGES) - -clean: - rm -rf $(TOOLS) mdbx_test @* *.[ao] *.[ls]o *~ tmp.db/* *.gcov *.log *.err src/*.o test/*.o - -check: all - rm -f $(TESTDB) $(TESTLOG) && (set -o pipefail; ./mdbx_test --pathname=$(TESTDB) --dont-cleanup-after basic | tee -a $(TESTLOG) | tail -n 42) && ./mdbx_chk -vvn $(TESTDB) - -check-singleprocess: all - rm -f $(TESTDB) $(TESTLOG) && (set -o pipefail; ./mdbx_test --pathname=$(TESTDB) --dont-cleanup-after --hill | tee -a $(TESTLOG) | tail -n 42) && ./mdbx_chk -vvn $(TESTDB) - -check-fault: all - rm -f $(TESTDB) $(TESTLOG) && (set -o pipefail; ./mdbx_test --pathname=$(TESTDB) --inject-writefault=42 --dump-config --dont-cleanup-after basic | tee -a $(TESTLOG) | tail -n 42) && ./mdbx_chk -vvn $(TESTDB) - -define core-rule -$(patsubst %.c,%.o,$(1)): $(1) $(CORE_INC) mdbx.h Makefile - $(CC) $(CFLAGS) -c $(1) -o $$@ - -endef -$(foreach file,$(CORE_SRC),$(eval $(call core-rule,$(file)))) - -define test-rule -$(patsubst %.cc,%.o,$(1)): $(1) $(TEST_INC) mdbx.h Makefile - $(CXX) $(CXXFLAGS) -c $(1) -o $$@ - -endef -$(foreach file,$(TEST_SRC),$(eval $(call test-rule,$(file)))) - -libmdbx.a: $(CORE_OBJ) - $(AR) rs $@ $? - -libmdbx.so: $(CORE_OBJ) - $(CC) $(CFLAGS) -save-temps $^ -pthread -shared $(LDFLAGS) -o $@ - -mdbx_%: src/tools/mdbx_%.c libmdbx.a - $(CC) $(CFLAGS) $^ $(EXE_LDFLAGS) -o $@ - -mdbx_test: $(TEST_OBJ) libmdbx.so - $(CXX) $(CXXFLAGS) $(TEST_OBJ) -Wl,-rpath . -L . -l mdbx $(EXE_LDFLAGS) -o $@ - -############################################################################### - -ifneq ($(wildcard $(IOARENA)),) - -.PHONY: bench clean-bench re-bench - -clean-bench: - rm -rf bench-*.txt _ioarena/* - -re-bench: clean-bench bench - -define bench-rule -bench-$(1)_$(2).txt: $(3) $(IOARENA) Makefile - LD_LIBRARY_PATH="./:$$$${LD_LIBRARY_PATH}" \ - $(IOARENA) -D $(1) -B crud -m nosync -n $(2) \ - | tee $$@ | grep throughput && \ - LD_LIBRARY_PATH="./:$$$${LD_LIBRARY_PATH}" \ - $(IOARENA) -D $(1) -B get,iterate -m sync -r 4 -n $(2) \ - | tee -a $$@ | grep throughput \ - || mv -f $$@ $$@.error - -endef - -$(eval $(call bench-rule,mdbx,$(NN),libmdbx.so)) - -$(eval $(call bench-rule,sophia,$(NN))) -$(eval $(call bench-rule,leveldb,$(NN))) -$(eval $(call bench-rule,rocksdb,$(NN))) -$(eval $(call bench-rule,wiredtiger,$(NN))) -$(eval $(call bench-rule,forestdb,$(NN))) -$(eval $(call bench-rule,lmdb,$(NN))) -$(eval $(call bench-rule,nessdb,$(NN))) -$(eval $(call bench-rule,sqlite3,$(NN))) -$(eval $(call bench-rule,ejdb,$(NN))) -$(eval $(call bench-rule,vedisdb,$(NN))) -$(eval $(call bench-rule,dummy,$(NN))) - -$(eval $(call bench-rule,debug,10)) - -bench: bench-mdbx_$(NN).txt - -.PHONY: bench-debug - -bench-debug: bench-debug_10.txt - -bench-quartet: bench-mdbx_$(NN).txt bench-lmdb_$(NN).txt bench-rocksdb_$(NN).txt bench-wiredtiger_$(NN).txt - -endif - -############################################################################### - -ci-rule = ( CC=$$(which $1); if [ -n "$$CC" ]; then \ - echo -n "probe by $2 ($$(readlink -f $$(which $$CC))): " && \ - $(MAKE) clean >$1.log 2>$1.err && \ - $(MAKE) CC=$$(readlink -f $$CC) XCFLAGS="-UNDEBUG -DMDBX_DEBUG=2 -DLIBMDBX_EXPORTS=1" check 1>$1.log 2>$1.err && echo "OK" \ - || ( echo "FAILED"; cat $1.err >&2; exit 1 ); \ - else echo "no $2 ($1) for probe"; fi; ) -ci: - @if [ "$$(readlink -f $$(which $(CC)))" != "$$(readlink -f $$(which gcc || echo /bin/false))" -a \ - "$$(readlink -f $$(which $(CC)))" != "$$(readlink -f $$(which clang || echo /bin/false))" -a \ - "$$(readlink -f $$(which $(CC)))" != "$$(readlink -f $$(which icc || echo /bin/false))" ]; then \ - $(call ci-rule,$(CC),default C compiler); \ - fi - @$(call ci-rule,gcc,GCC) - @$(call ci-rule,clang,clang LLVM) - @$(call ci-rule,icc,Intel C) - -############################################################################### - -CROSS_LIST = alpha-linux-gnu-gcc mips-linux-gnu-gcc \ - powerpc64-linux-gnu-gcc powerpc-linux-gnu-gcc \ - arm-linux-gnueabihf-gcc aarch64-linux-gnu-gcc - -# hppa-linux-gnu-gcc - don't supported by current qemu release -# s390x-linux-gnu-gcc - qemu troubles (hang/abort) -# sh4-linux-gnu-gcc - qemu troubles (pread syscall, etc) -# mips64-linux-gnuabi64-gcc - qemu troubles (pread syscall, etc) -# sparc64-linux-gnu-gcc - qemu troubles (fcntl for F_SETLK/F_GETLK) -CROSS_LIST_NOQEMU = hppa-linux-gnu-gcc s390x-linux-gnu-gcc \ - sh4-linux-gnu-gcc mips64-linux-gnuabi64-gcc sparc64-linux-gnu-gcc - -cross-gcc: - @echo "CORRESPONDING CROSS-COMPILERs ARE REQUIRED." - @echo "FOR INSTANCE: apt install g++-aarch64-linux-gnu g++-alpha-linux-gnu g++-arm-linux-gnueabihf g++-hppa-linux-gnu g++-mips-linux-gnu g++-mips64-linux-gnuabi64 g++-powerpc-linux-gnu g++-powerpc64-linux-gnu g++-s390x-linux-gnu g++-sh4-linux-gnu" - @for CC in $(CROSS_LIST_NOQEMU) $(CROSS_LIST); do \ - echo "===================== $$CC"; \ - $(MAKE) clean && CC=$$CC CXX=$$(echo $$CC | sed 's/-gcc/-g++/') EXE_LDFLAGS=-static $(MAKE) all || exit $$?; \ - done - -# -# Unfortunately qemu don't provide robust support for futexes. -# Therefore it is impossible to run full multi-process tests. -cross-qemu: - @echo "CORRESPONDING CROSS-COMPILERs AND QEMUs ARE REQUIRED." - @echo "FOR INSTANCE: apt install binfmt-support qemu-user-static qemu-user qemu-system-arm qemu-system-mips qemu-system-misc qemu-system-ppc qemu-system-sparc g++-aarch64-linux-gnu g++-alpha-linux-gnu g++-arm-linux-gnueabihf g++-hppa-linux-gnu g++-mips-linux-gnu g++-mips64-linux-gnuabi64 g++-powerpc-linux-gnu g++-powerpc64-linux-gnu g++-s390x-linux-gnu g++-sh4-linux-gnu" - @for CC in $(CROSS_LIST); do \ - echo "===================== $$CC + qemu"; \ - $(MAKE) clean && CC=$$CC CXX=$$(echo $$CC | sed 's/-gcc/-g++/') EXE_LDFLAGS=-static $(MAKE) check-singleprocess || exit $$?; \ - done diff --git a/plugins/Dbx_mdbx/src/libmdbx/README-RU.md b/plugins/Dbx_mdbx/src/libmdbx/README-RU.md deleted file mode 100644 index f4ae5e8f14..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/README-RU.md +++ /dev/null @@ -1,700 +0,0 @@ -libmdbx -====================================== -**The revised and extended descendant of [Symas LMDB](https://symas.com/lmdb/).** - -*The Future will Positive. Всё будет хорошо.* -[](https://travis-ci.org/leo-yuriev/libmdbx) -[](https://ci.appveyor.com/project/leo-yuriev/libmdbx/branch/master) -[](https://scan.coverity.com/projects/reopen-libmdbx) - -English version [by Google](https://translate.googleusercontent.com/translate_c?act=url&ie=UTF8&sl=ru&tl=en&u=https://github.com/leo-yuriev/libmdbx/tree/master) -and [by Yandex](https://translate.yandex.ru/translate?url=https%3A%2F%2Fgithub.com%2FReOpen%2Flibmdbx%2Ftree%2Fmaster&lang=ru-en). - -### Project Status - - -**Сейчас MDBX _активно перерабатывается_** и к середине 2018 -ожидается большое изменение как API, так и формата базы данных. -К сожалению, обновление приведет к потере совместимости с -предыдущими версиями. - -Цель этой революции - обеспечение более четкого надежного -API и добавление новых функции, а также наделение базы данных -новыми свойствами. - -В настоящее время MDBX предназначена для Linux, а также -поддерживает Windows (начиная с Windows Server 2008) в качестве -дополнительной платформы. Поддержка других ОС может быть -обеспечена на коммерческой основе. Однако такие -усовершенствования (т. е. pull-requests) могут быть приняты в -мейнстрим только в том случае, если будет доступен -соответствующий публичный и бесплатный сервис непрерывной -интеграции (aka Continuous Integration). - -## Содержание - -- [Обзор](#Обзор) - - [Сравнение с другими СУБД](#Сравнение-с-другими-СУБД) - - [История & Acknowledgments](#История) -- [Основные свойства](#Основные-свойства) -- [Сравнение производительности](#Сравнение-производительности) - - [Интегральная производительность](#Интегральная-производительность) - - [Масштабируемость чтения](#Масштабируемость-чтения) - - [Синхронная фиксация](#Синхронная-фиксация) - - [Отложенная фиксация](#Отложенная-фиксация) - - [Асинхронная фиксация](#Асинхронная-фиксация) - - [Потребление ресурсов](#Потребление-ресурсов) -- [Недостатки и Компромиссы](#Недостатки-и-Компромиссы) - - [Проблема долгих чтений](#Проблема-долгих-чтений) - - [Сохранность данных в режиме асинхронной фиксации](#Сохранность-данных-в-режиме-асинхронной-фиксации) -- [Доработки и усовершенствования относительно LMDB](#Доработки-и-усовершенствования-относительно-lmdb) - - -## Обзор - -_libmdbx_ - это встраиваемый key-value движок хранения со специфическим -набором свойств и возможностей, ориентированный на создание уникальных -легковесных решений с предельной производительностью под Linux и Windows. - -_libmdbx_ позволяет множеству процессов совместно читать и обновлять -несколько key-value таблиц с соблюдением [ACID](https://ru.wikipedia.org/wiki/ACID), -при минимальных накладных расходах и амортизационной стоимости любых операций Olog(N). - -_libmdbx_ обеспечивает -[serializability](https://en.wikipedia.org/wiki/Serializability) -изменений и согласованность данных после аварий. При этом транзакции, -изменяющие данные, никак не мешают операциям чтения и выполняются строго -последовательно с использованием единственного -[мьютекса](https://en.wikipedia.org/wiki/Mutual_exclusion). - -_libmdbx_ позволяет выполнять операции чтения с гарантиями -[wait-free](https://en.wikipedia.org/wiki/Non-blocking_algorithm#Wait-freedom), -параллельно на каждом ядре CPU, без использования атомарных операций -и/или примитивов синхронизации. - -_libmdbx_ не использует [LSM](https://en.wikipedia.org/wiki/Log-structured_merge-tree), а основан на [B+Tree](https://en.wikipedia.org/wiki/B%2B_tree) с [отображением](https://en.wikipedia.org/wiki/Memory-mapped_file) всех данных в память, -при этом текущая версия не использует [WAL](https://en.wikipedia.org/wiki/Write-ahead_logging). -Это предопределяет многие свойства, в том числе удачные и противопоказанные сценарии использования. - -### Сравнение с другими СУБД - -Ввиду того, что в _libmdbx_ сейчас происходит революция, я посчитал лучшим решением -ограничится здесь ссылкой на [главу Comparison with other databases](https://github.com/coreos/bbolt#comparison-with-other-databases) в описании _BoltDB_. - - -### История - -_libmdbx_ является результатом переработки и развития "Lightning Memory-Mapped Database", -известной под аббревиатурой -[LMDB](https://en.wikipedia.org/wiki/Lightning_Memory-Mapped_Database). -Изначально доработка производилась в составе проекта -[ReOpenLDAP](https://github.com/leo-yuriev/ReOpenLDAP). Примерно за год -работы внесенные изменения приобрели самостоятельную ценность. Осенью -2015 доработанный движок был выделен в отдельный проект, который был -[представлен на конференции Highload++ -2015](http://www.highload.ru/2015/abstracts/1831.html). - -В начале 2017 года движок _libmdbx_ получил новый импульс развития, -благодаря использованию в [Fast Positive -Tables](https://github.com/leo-yuriev/libfpta), aka ["Позитивные -Таблицы"](https://github.com/leo-yuriev/libfpta) by [Positive -Technologies](https://www.ptsecurity.ru). - - -#### Acknowledgments - -Howard Chu (Symas Corporation) - the author of LMDB, -from which originated the MDBX in 2015. - -Martin Hedenfalk <martin@bzero.se> - the author of `btree.c` code, -which was used for begin development of LMDB. - - -Основные свойства -================= - -_libmdbx_ наследует все ключевые возможности и особенности -своего прародителя [LMDB](https://en.wikipedia.org/wiki/Lightning_Memory-Mapped_Database), -но с устранением ряда описываемых далее проблем и архитектурных недочетов. - -1. Данные хранятся в упорядоченном отображении (ordered map), ключи всегда - отсортированы, поддерживается выборка диапазонов (range lookups). - -2. Данные отображается в память каждого работающего с БД процесса. - К данным и ключам обеспечивается прямой доступ в памяти без необходимости их - копирования. - -3. Транзакции согласно - [ACID](https://ru.wikipedia.org/wiki/ACID), посредством - [MVCC](https://ru.wikipedia.org/wiki/MVCC) и - [COW](https://ru.wikipedia.org/wiki/%D0%9A%D0%BE%D0%BF%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5_%D0%BF%D1%80%D0%B8_%D0%B7%D0%B0%D0%BF%D0%B8%D1%81%D0%B8). - Изменения строго последовательны и не блокируются чтением, - конфликты между транзакциями невозможны. - При этом гарантируется чтение только зафиксированных данных, см [relaxing serializability](https://en.wikipedia.org/wiki/Serializability). - -4. Чтение и поиск [без блокировок](https://ru.wikipedia.org/wiki/%D0%9D%D0%B5%D0%B1%D0%BB%D0%BE%D0%BA%D0%B8%D1%80%D1%83%D1%8E%D1%89%D0%B0%D1%8F_%D1%81%D0%B8%D0%BD%D1%85%D1%80%D0%BE%D0%BD%D0%B8%D0%B7%D0%B0%D1%86%D0%B8%D1%8F), - без [атомарных операций](https://ru.wikipedia.org/wiki/%D0%90%D1%82%D0%BE%D0%BC%D0%B0%D1%80%D0%BD%D0%B0%D1%8F_%D0%BE%D0%BF%D0%B5%D1%80%D0%B0%D1%86%D0%B8%D1%8F). - Читатели не блокируются операциями записи и не конкурируют - между собой, чтение масштабируется линейно по ядрам CPU. - > Для точности следует отметить, что "подключение к БД" (старт первой - > читающей транзакции в потоке) и "отключение от БД" (закрытие БД или - > завершение потока) требуют краткосрочного захвата блокировки для - > регистрации/дерегистрации текущего потока в "таблице читателей". - -5. Эффективное хранение дубликатов (ключей с несколькими - значениями), без дублирования ключей, с сортировкой значений, в - том числе целочисленных (для вторичных индексов). - -6. Эффективная поддержка коротких ключей фиксированной длины, в том числе целочисленных. - -7. Амортизационная стоимость любой операции Olog(N), - [WAF](https://en.wikipedia.org/wiki/Write_amplification) (Write - Amplification Factor) и RAF (Read Amplification Factor) также Olog(N). - -8. Нет [WAL](https://en.wikipedia.org/wiki/Write-ahead_logging) и журнала - транзакций, после сбоев не требуется восстановление. Не требуется компактификация - или какое-либо периодическое обслуживание. Поддерживается резервное копирование - "по горячему", на работающей БД без приостановки изменения данных. - -9. Отсутствует какое-либо внутреннее управление памятью или кэшированием. Всё - необходимое штатно выполняет ядро ОС! - - -Сравнение производительности -============================ - -Все представленные ниже данные получены многократным прогоном тестов на -ноутбуке Lenovo Carbon-2, i7-4600U 2.1 ГГц, 8 Гб ОЗУ, с SSD-диском -SAMSUNG MZNTD512HAGL-000L1 (DXT23L0Q) 512 Гб. - -Исходный код бенчмарка [_IOArena_](https://github.com/pmwkaa/ioarena) и -сценарии тестирования [доступны на -github](https://github.com/pmwkaa/ioarena/tree/HL%2B%2B2015). - --------------------------------------------------------------------------------- - -### Интегральная производительность - -Показана соотнесенная сумма ключевых показателей производительности в трёх -бенчмарках: - - - Чтение/Поиск на машине с 4-мя процессорами; - - - Транзакции с [CRUD](https://ru.wikipedia.org/wiki/CRUD)-операциями - (вставка, чтение, обновление, удаление) в режиме **синхронной фиксации** - данных (fdatasync при завершении каждой транзакции или аналог); - - - Транзакции с [CRUD](https://ru.wikipedia.org/wiki/CRUD)-операциями - (вставка, чтение, обновление, удаление) в режиме **отложенной фиксации** - данных (отложенная запись посредством файловой систем или аналог); - -*Бенчмарк в режиме асинхронной записи не включен по двум причинам:* - - 1. Такое сравнение не совсем правомочно, его следует делать с движками - ориентированными на хранение данных в памяти ([Tarantool](https://tarantool.io/), [Redis](https://redis.io/)). - - 2. Превосходство libmdbx становится еще более подавляющим, что мешает - восприятию информации. - - - --------------------------------------------------------------------------------- - -### Масштабируемость чтения - -Для каждого движка показана суммарная производительность при -одновременном выполнении запросов чтения/поиска в 1-2-4-8 потоков на -машине с 4-мя физическими процессорами. - - - --------------------------------------------------------------------------------- - -### Синхронная фиксация - - - Линейная шкала слева и темные прямоугольники соответствуют количеству - транзакций в секунду, усредненному за всё время теста. - - - Логарифмическая шкала справа и желтые интервальные отрезки - соответствуют времени выполнения транзакций. При этом каждый отрезок - показывает минимальное и максимальное время, затраченное на выполнение - транзакций, а крестиком отмечено среднеквадратичное значение. - -Выполняется **10.000 транзакций в режиме синхронной фиксации данных** на -диске. При этом требуется гарантия, что при аварийном выключении питания -(или другом подобном сбое) все данные будут консистентны и полностью -соответствовать последней завершенной транзакции. В _libmdbx_ в этом -режиме при фиксации каждой транзакции выполняется системный вызов -[fdatasync](https://linux.die.net/man/2/fdatasync). - -В каждой транзакции выполняется комбинированная CRUD-операция (две -вставки, одно чтение, одно обновление, одно удаление). Бенчмарк стартует -на пустой базе, а при завершении, в результате выполняемых действий, в -базе насчитывается 10.000 небольших key-value записей. - - - --------------------------------------------------------------------------------- - -### Отложенная фиксация - - - Линейная шкала слева и темные прямоугольники соответствуют количеству - транзакций в секунду, усредненному за всё время теста. - - - Логарифмическая шкала справа и желтые интервальные отрезки - соответствуют времени выполнения транзакций. При этом каждый отрезок - показывает минимальное и максимальное время, затраченное на выполнение - транзакций, а крестиком отмечено среднеквадратичное значение. - -Выполняется **100.000 транзакций в режиме отложенной фиксации данных** -на диске. При этом требуется гарантия, что при аварийном выключении -питания (или другом подобном сбое) все данные будут консистентны на -момент завершения одной из транзакций, но допускается потеря изменений -из некоторого количества последних транзакций, что для многих движков -предполагает включение -[WAL](https://en.wikipedia.org/wiki/Write-ahead_logging) (write-ahead -logging) либо журнала транзакций, который в свою очередь опирается на -гарантию упорядоченности данных в журналируемой файловой системе. -_libmdbx_ при этом не ведет WAL, а передает весь контроль файловой -системе и ядру ОС. - -В каждой транзакции выполняется комбинированная CRUD-операция (две -вставки, одно чтение, одно обновление, одно удаление). Бенчмарк стартует -на пустой базе, а при завершении, в результате выполняемых действий, в -базе насчитывается 100.000 небольших key-value записей. - - - --------------------------------------------------------------------------------- - -### Асинхронная фиксация - - - Линейная шкала слева и темные прямоугольники соответствуют количеству - транзакций в секунду, усредненному за всё время теста. - - - Логарифмическая шкала справа и желтые интервальные отрезки - соответствуют времени выполнения транзакций. При этом каждый отрезок - показывает минимальное и максимальное время, затраченное на выполнение - транзакций, а крестиком отмечено среднеквадратичное значение. - -Выполняется **1.000.000 транзакций в режиме асинхронной фиксации -данных** на диске. При этом требуется гарантия, что при аварийном -выключении питания (или другом подобном сбое) все данные будут -консистентны на момент завершения одной из транзакций, но допускается -потеря изменений из значительного количества последних транзакций. Во -всех движках при этом включался режим предполагающий минимальную -нагрузку на диск по записи, и соответственно минимальную гарантию -сохранности данных. В _libmdbx_ при этом используется режим асинхронной -записи измененных страниц на диск посредством ядра ОС и системного -вызова [msync(MS_ASYNC)](https://linux.die.net/man/2/msync). - -В каждой транзакции выполняется комбинированная CRUD-операция (две -вставки, одно чтение, одно обновление, одно удаление). Бенчмарк стартует -на пустой базе, а при завершении, в результате выполняемых действий, в -базе насчитывается 10.000 небольших key-value записей. - - - --------------------------------------------------------------------------------- - -### Потребление ресурсов - -Показана соотнесенная сумма использованных ресурсов в ходе бенчмарка в -режиме отложенной фиксации: - - - суммарное количество операций ввода-вывода (IOPS), как записи, так и - чтения. - - - суммарное затраченное время процессора, как в режиме пользовательских процессов, - так и в режиме ядра ОС. - - - использованное место на диске при завершении теста, после закрытия БД из тестирующего процесса, - но без ожидания всех внутренних операций обслуживания (компактификации LSM и т.п.). - -Движок _ForestDB_ был исключен при оформлении результатов, так как -относительно конкурентов многократно превысил потребление каждого из -ресурсов (потратил процессорное время на генерацию IOPS для заполнения -диска), что не позволяло наглядно сравнить показатели остальных движков -на одной диаграмме. - -Все данные собирались посредством системного вызова -[getrusage()](http://man7.org/linux/man-pages/man2/getrusage.2.html) и -сканированием директорий с данными. - - - --------------------------------------------------------------------------------- - -## Недостатки и Компромиссы - -1. Единовременно может выполняться не более одной транзакция изменения данных - (один писатель). Зато все изменения всегда последовательны, не может быть - конфликтов или логических ошибок при откате транзакций. - -2. Отсутствие [WAL](https://en.wikipedia.org/wiki/Write-ahead_logging) - обуславливает относительно большой - [WAF](https://en.wikipedia.org/wiki/Write_amplification) (Write - Amplification Factor). Поэтому фиксация изменений на диске может быть - достаточно дорогой и являться главным ограничением производительности - при интенсивном изменении данных. - > В качестве компромисса _libmdbx_ предлагает несколько режимов ленивой - > и/или периодической фиксации. В том числе режим `MAPASYNC`, при котором - > изменения происходят только в памяти и асинхронно фиксируются на диске - > ядром ОС. - > - > Однако, следует воспринимать это свойство аккуратно и взвешенно. - > Например, полная фиксация транзакции в БД с журналом потребует минимум 2 - > IOPS (скорее всего 3-4) из-за накладных расходов в файловой системе. В - > _libmdbx_ фиксация транзакции также требует от 2 IOPS. Однако, в БД с - > журналом кол-во IOPS будет меняться в зависимости от файловой системы, - > но не от кол-ва записей или их объема. Тогда как в _libmdbx_ кол-во - > будет расти логарифмически от кол-ва записей/строк в БД (по высоте - > b+tree). - -3. [COW](https://ru.wikipedia.org/wiki/%D0%9A%D0%BE%D0%BF%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5_%D0%BF%D1%80%D0%B8_%D0%B7%D0%B0%D0%BF%D0%B8%D1%81%D0%B8) - для реализации [MVCC](https://ru.wikipedia.org/wiki/MVCC) выполняется на - уровне страниц в [B+ - дереве](https://ru.wikipedia.org/wiki/B-%D0%B4%D0%B5%D1%80%D0%B5%D0%B2%D0%BE). - Поэтому изменение данных амортизационно требует копирования Olog(N) - страниц, что расходует [пропускную способность оперативной - памяти](https://en.wikipedia.org/wiki/Memory_bandwidth) и является - основным ограничителем производительности в режиме `MAPASYNC`. - > Этот недостаток неустраним, тем не менее следует дать некоторые пояснения. - > Дело в том, что фиксация изменений на диске потребует гораздо более - > значительного копирования данных в памяти и массы других затратных операций. - > Поэтому обусловленное этим недостатком падение производительности становится - > заметным только при отказе от фиксации изменений на диске. - > Соответственно, корректнее сказать, что _libmdbx_ позволяет - > получить персистентность ценой минимального падения производительности. - > Если же нет необходимости оперативно сохранять данные, то логичнее - > использовать `std::map`. - -4. В _LMDB_ существует проблема долгих чтений (приостановленных читателей), - которая приводит к деградации производительности и переполнению БД. - > В _libmdbx_ предложены средства для предотвращения, быстрого выхода из - > некомфортной ситуации и устранения её последствий. Подробности ниже. - -5. В _LMDB_ есть вероятность разрушения БД в режиме `WRITEMAP+MAPASYNC`. - В _libmdbx_ для `WRITEMAP+MAPASYNC` гарантируется как сохранность базы, - так и согласованность данных. - > Дополнительно, в качестве альтернативы, предложен режим `UTTERLY_NOSYNC`. - > Подробности ниже. - - -#### Проблема долгих чтений - -*Следует отметить*, что проблема "сборки мусора" так или иначе -существует во всех СУБД (Vacuum в PostgreSQL). Однако в случае _libmdbx_ -и LMDB она проявляется более остро, прежде всего из-за высокой -производительности, а также из-за намеренного упрощения внутренних -механизмов ради производительности. - -Понимание проблемы требует некоторых пояснений, которые -изложены ниже, но могут быть сложны для быстрого восприятия. -Поэтому, тезисно: - -* Изменение данных на фоне долгой операции чтения может - приводить к исчерпанию места в БД. - -* После чего любая попытка обновить данные будет приводить к - ошибке `MAP_FULL` до завершения долгой операции чтения. - -* Характерными примерами долгих чтений являются горячее - резервное копирования и отладка клиентского приложения при - активной транзакции чтения. - -* В оригинальной _LMDB_ после этого будет наблюдаться - устойчивая деградация производительности всех механизмов - обратной записи на диск (в I/O контроллере, в гипервизоре, - в ядре ОС). - -* В _libmdbx_ предусмотрен механизм аварийного прерывания таких - операций, а также режим `LIFO RECLAIM` устраняющий последующую - деградацию производительности. - -Операции чтения выполняются в контексте снимка данных (версии -БД), который был актуальным на момент старта транзакции чтения. Такой -читаемый снимок поддерживается неизменным до завершения операции. В свою -очередь, это не позволяет повторно использовать страницы БД в -последующих версиях (снимках БД). - -Другими словами, если обновление данных выполняется на фоне долгой -операции чтения, то вместо повторного использования "старых" ненужных -страниц будут выделяться новые, так как "старые" страницы составляют -снимок БД, который еще используется долгой операцией чтения. - -В результате, при интенсивном изменении данных и достаточно длительной -операции чтения, в БД могут быть исчерпаны свободные страницы, что не -позволит создавать новые снимки/версии БД. Такая ситуация будет -сохраняться до завершения операции чтения, которая использует старый -снимок данных и препятствует повторному использованию страниц БД. - -Однако, на этом проблемы не заканчиваются. После описанной ситуации, все -дополнительные страницы, которые были выделены пока переработка старых -была невозможна, будут участвовать в цикле выделения/освобождения до -конца жизни экземпляра БД. В оригинальной _LMDB_ этот цикл использования -страниц работает по принципу [FIFO](https://ru.wikipedia.org/wiki/FIFO). -Поэтому увеличение количества циркулирующий страниц, с точки зрения -механизмов кэширования и/или обратной записи, выглядит как увеличение -рабочего набор данных. Проще говоря, однократное попадание в ситуацию -"уснувшего читателя" приводит к устойчивому эффекту вымывания I/O кэша -при всех последующих изменениях данных. - -Для устранения описанных проблемы в _libmdbx_ сделаны существенные -доработки, подробности ниже. Иллюстрации к проблеме "долгих чтений" -можно найти в [слайдах презентации](http://www.slideshare.net/leoyuriev/lmdb). - -Там же приведен пример количественной оценки прироста производительности -за счет эффективной работы [BBWC](https://en.wikipedia.org/wiki/BBWC) -при включении `LIFO RECLAIM` в _libmdbx_. - - -#### Сохранность данных в режиме асинхронной фиксации - -При работе в режиме `WRITEMAP+MAPSYNC` запись измененных страниц -выполняется ядром ОС, что имеет ряд преимуществ. Так например, при крахе -приложения, ядро ОС сохранит все изменения. - -Однако, при аварийном отключении питания или сбое в ядре ОС, на диске -может быть сохранена только часть измененных страниц БД. При этом с большой -вероятностью может оказаться, что будут сохранены мета-страницы со -ссылками на страницы с новыми версиями данных, но не сами новые данные. -В этом случае БД будет безвозвратна разрушена, даже если до аварии -производилась полная синхронизация данных (посредством -`mdbx_env_sync()`). - -В _libmdbx_ эта проблема устранена путем полной переработки -пути записи данных: - -* В режиме `WRITEMAP+MAPSYNC` _libmdbx_ не обновляет - мета-страницы непосредственно, а поддерживает их теневые копии - с переносом изменений после фиксации данных. - -* При завершении транзакций, в зависимости от состояния - синхронности данных между диском и оперативной памятью, - _libmdbx_ помечает точки фиксации либо как сильные (strong), - либо как слабые (weak). Так например, в режиме - `WRITEMAP+MAPSYNC` завершаемые транзакции помечаются как - слабые, а при явной синхронизации данных - как сильные. - -* В _libmdbx_ поддерживается не две, а три отдельные мета-страницы. - Это позволяет выполнять фиксацию транзакций с формированием как - сильной, так и слабой точки фиксации, без потери двух предыдущих - точек фиксации (из которых одна может быть сильной, а вторая слабой). - В результате, _libmdbx_ позволяет в произвольном порядке чередовать - сильные и слабые точки фиксации без нарушения соответствующих - гарантий в случае неожиданной системной аварии во время фиксации. - -* При открытии БД выполняется автоматический откат к последней - сильной фиксации. Этим обеспечивается гарантия сохранности БД. - -Такая гарантия надежности не дается бесплатно. Для -сохранности данных, страницы, формирующие крайний снимок с -сильной фиксацией, не должны повторно использоваться -(перезаписываться) до формирования следующей сильной точки -фиксации. Таким образом, крайняя точка фиксации создает -описанный выше эффект "долгого чтения". Разница же здесь в том, -что при исчерпании свободных страниц ситуация будет -автоматически исправлена, посредством записи изменений на диск -и формирования новой сильной точки фиксации. - -Таким образом, в режиме безопасной асинхронной фиксации _libmdbx_ будет -всегда использовать новые страницы до исчерпания места в БД или до явного -формирования сильной точки фиксации посредством `mdbx_env_sync()`. -При этом суммарный трафик записи на диск будет примерно такой же, -как если бы отдельно фиксировалась каждая транзакция. - -В текущей версии _libmdbx_ вам предоставляется выбор между безопасным -режимом (по умолчанию) асинхронной фиксации, и режимом `UTTERLY_NOSYNC` когда -при системной аварии есть шанс полного разрушения БД как в LMDB. - -В последующих версиях _libmdbx_ будут предусмотрены средства -для асинхронной записи данных на диск с автоматическим -формированием сильных точек фиксации. - --------------------------------------------------------------------------------- - -Доработки и усовершенствования относительно LMDB -================================================ - -1. Режим `LIFO RECLAIM`. - - Для повторного использования выбираются не самые старые, а - самые новые страницы из доступных. За счет этого цикл - использования страниц всегда имеет минимальную длину и не - зависит от общего числа выделенных страниц. - - В результате механизмы кэширования и обратной записи работают с - максимально возможной эффективностью. В случае использования - контроллера дисков или системы хранения с - [BBWC](https://en.wikipedia.org/wiki/BBWC) возможно - многократное увеличение производительности по записи - (обновлению данных). - -2. Обработчик `OOM-KICK`. - - Посредством `mdbx_env_set_oomfunc()` может быть установлен - внешний обработчик (callback), который будет вызван при - исчерпании свободных страниц из-за долгой операцией чтения. - Обработчику будет передан PID и pthread_id виновника. - В свою очередь обработчик может предпринять одно из действий: - - * нейтрализовать виновника (отправить сигнал kill #9), если - долгое чтение выполняется сторонним процессом; - - * отменить или перезапустить проблемную операцию чтения, если - операция выполняется одним из потоков текущего процесса; - - * подождать некоторое время, в расчете на то, что проблемная операция - чтения будет штатно завершена; - - * прервать текущую операцию изменения данных с возвратом кода - ошибки. - -3. Гарантия сохранности БД в режиме `WRITEMAP+MAPSYNC`. - > В текущей версии _libmdbx_ вам предоставляется выбор между безопасным - > режимом (по умолчанию) асинхронной фиксации, и режимом `UTTERLY_NOSYNC` - > когда при системной аварии есть шанс полного разрушения БД как в LMDB. - > Для подробностей смотрите раздел - > [Сохранность данных в режиме асинхронной фиксации](#Сохранность-данных-в-режиме-асинхронной-фиксации). - -4. Возможность автоматического формирования контрольных точек -(сброса данных на диск) при накоплении заданного объёма изменений, -устанавливаемого функцией `mdbx_env_set_syncbytes()`. - -5. Возможность получить отставание текущей транзакции чтения от -последней версии данных в БД посредством `mdbx_txn_straggler()`. - -6. Утилита mdbx_chk для проверки БД и функция `mdbx_env_pgwalk()` для -обхода всех страниц БД. - -7. Управление отладкой и получение отладочных сообщений посредством -`mdbx_setup_debug()`. - -8. Возможность связать с каждой завершаемой транзакцией до 3 -дополнительных маркеров посредством `mdbx_canary_put()`, и прочитать их -в транзакции чтения посредством `mdbx_canary_get()`. - -9. Возможность узнать есть ли за текущей позицией курсора строка данных -посредством `mdbx_cursor_eof()`. - -10. Возможность явно запросить обновление существующей записи, без -создания новой посредством флажка `MDBX_CURRENT` для `mdbx_put()`. - -11. Возможность посредством `mdbx_replace()` обновить или удалить запись -с получением предыдущего значения данных, а также адресно изменить -конкретное multi-значение. - -12. Поддержка ключей и значений нулевой длины, включая сортированные -дубликаты. - -13. Исправленный вариант `mdbx_cursor_count()`, возвращающий корректное -количество дубликатов для всех типов таблиц и любого положения курсора. - -14. Возможность открыть БД в эксклюзивном режиме посредством флага -`MDBX_EXCLUSIVE`, например в целях её проверки. - -15. Возможность закрыть БД в "грязном" состоянии (без сброса данных и -формирования сильной точки фиксации) посредством `mdbx_env_close_ex()`. - -16. Возможность получить посредством `mdbx_env_info()` дополнительную -информацию, включая номер самой старой версии БД (снимка данных), -который используется одним из читателей. - -17. Функция `mdbx_del()` не игнорирует дополнительный (уточняющий) -аргумент `data` для таблиц без дубликатов (без флажка `MDBX_DUPSORT`), а -при его ненулевом значении всегда использует его для сверки с удаляемой -записью. - -18. Возможность открыть dbi-таблицу, одновременно с установкой -компараторов для ключей и данных, посредством `mdbx_dbi_open_ex()`. - -19. Возможность посредством `mdbx_is_dirty()` определить находятся ли -некоторый ключ или данные в "грязной" странице БД. Таким образом, -избегая лишнего копирования данных перед выполнением модифицирующих -операций (значения, размещенные в "грязных" страницах, могут быть -перезаписаны при изменениях, иначе они будут неизменны). - -20. Корректное обновление текущей записи, в том числе сортированного -дубликата, при использовании режима `MDBX_CURRENT` в -`mdbx_cursor_put()`. - -21. Все курсоры, как в транзакциях только для чтения, так и в пишущих, -могут быть переиспользованы посредством `mdbx_cursor_renew()` и ДОЛЖНЫ -ОСВОБОЖДАТЬСЯ ЯВНО. - > - > ## _ВАЖНО_, Обратите внимание! - > - > Это единственное изменение в API, которое значимо меняет - > семантику управления курсорами и может приводить к утечкам - > памяти. Следует отметить, что это изменение вынужденно. - > Так устраняется неоднозначность с массой тяжких последствий: - > - > - обращение к уже освобожденной памяти; - > - попытки повторного освобождения памяти; - > - повреждение памяти и ошибки сегментации. - -22. Дополнительный код ошибки `MDBX_EMULTIVAL`, который возвращается из -`mdbx_put()` и `mdbx_replace()` при попытке выполнить неоднозначное -обновление или удаления одного из нескольких значений с одним ключом. - -23. Возможность посредством `mdbx_get_ex()` получить значение по -заданному ключу, одновременно с количеством дубликатов. - -24. Наличие функций `mdbx_cursor_on_first()` и `mdbx_cursor_on_last()`, -которые позволяют быстро выяснить стоит ли курсор на первой/последней -позиции. - -25. При завершении читающих транзакций, открытые в них DBI-хендлы не -закрываются и не теряются при завершении таких транзакций посредством -`mdbx_txn_abort()` или `mdbx_txn_reset()`. Что позволяет избавится от ряда -сложно обнаруживаемых ошибок. - -26. Генерация последовательностей посредством `mdbx_dbi_sequence()`. - -27. Расширенное динамическое управление размером БД, включая выбор -размера страницы посредством `mdbx_env_set_geometry()`, -в том числе в **Windows** - -28. Три мета-страницы вместо двух, что позволяет гарантированно -консистентно обновлять слабые контрольные точки фиксации без риска -повредить крайнюю сильную точку фиксации. - -29. В _libmdbx_ реализован автоматический возврат освобождающихся -страниц в область нераспределенного резерва в конце файла данных. При -этом уменьшается количество страниц загруженных в память и участвующих в -цикле обновления данных и записи на диск. Фактически _libmdbx_ выполняет -постоянную компактификацию данных, но не затрачивая на это -дополнительных ресурсов, а только освобождая их. При освобождении места -в БД и установке соответствующих параметров геометрии базы данных, также будет -уменьшаться размер файла на диске, в том числе в **Windows**. - --------------------------------------------------------------------------------- - -``` -$ objdump -f -h -j .text libmdbx.so - -libmdbx.so: file format elf64-x86-64 -architecture: i386:x86-64, flags 0x00000150: -HAS_SYMS, DYNAMIC, D_PAGED -start address 0x000030e0 - -Sections: -Idx Name Size VMA LMA File off Algn - 11 .text 00014d84 00000000000030e0 00000000000030e0 000030e0 2**4 - CONTENTS, ALLOC, LOAD, READONLY, CODE - -``` - -``` -$ gcc -v -Using built-in specs. -COLLECT_GCC=gcc -COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper -OFFLOAD_TARGET_NAMES=nvptx-none -OFFLOAD_TARGET_DEFAULT=1 -Target: x86_64-linux-gnu -Configured with: ../src/configure -v --with-pkgversion='Ubuntu 7.2.0-8ubuntu3' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-7 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie --with-system-zlib --with-target-system-zlib --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu -Thread model: posix -gcc version 7.2.0 (Ubuntu 7.2.0-8ubuntu3) -``` diff --git a/plugins/Dbx_mdbx/src/libmdbx/README.md b/plugins/Dbx_mdbx/src/libmdbx/README.md deleted file mode 100644 index 92b6542fa7..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/README.md +++ /dev/null @@ -1,489 +0,0 @@ -libmdbx -====================================== -**Revised and extended descendant of [Symas LMDB](https://symas.com/lmdb/).** - -*The Future will be positive.* -[](https://travis-ci.org/leo-yuriev/libmdbx) -[](https://ci.appveyor.com/project/leo-yuriev/libmdbx/branch/master) -[](https://scan.coverity.com/projects/reopen-libmdbx) - -## Project Status for now - - - The stable versions ([_stable/0.0_](https://github.com/leo-yuriev/libmdbx/tree/stable/0.0) and [_stable/0.1_](https://github.com/leo-yuriev/libmdbx/tree/stable/0.1) branches) of _MDBX_ are frozen, i.e. no new features or API changes, but only bug fixes. - - The next version ([_devel_](https://github.com/leo-yuriev/libmdbx/tree/devel) branch) **is under active non-public development**, i.e. current API and set of features are extreme volatile. - - The immediate goal of development is formation of the stable API and the stable internal database format, which allows realise all PLANNED FEATURES: - 1. Integrity check by [Merkle tree](https://en.wikipedia.org/wiki/Merkle_tree); - 2. Support for [raw block devices](https://en.wikipedia.org/wiki/Raw_device); - 3. Separate place (HDD) for large data items; - 4. Using "[Roaring bitmaps](http://roaringbitmap.org/about/)" inside garbage collector; - 5. Non-sequential reclaiming, like PostgreSQL's [Vacuum](https://www.postgresql.org/docs/9.1/static/sql-vacuum.html); - 6. [Asynchronous lazy data flushing](https://sites.fas.harvard.edu/~cs265/papers/kathuria-2008.pdf) to disk(s); - 7. etc... - -Don't miss [Java Native Interface](https://github.com/castortech/mdbxjni) by [Castor Technologies](https://castortech.com/). - ------ - -Nowadays MDBX intended for Linux, and support Windows (since -Windows Server 2008) as a complementary platform. Support for -other OS could be implemented on commercial basis. However such -enhancements (i.e. pull requests) could be accepted in -mainstream only when corresponding public and free Continuous -Integration service will be available. - -## Contents - -- [Overview](#overview) - - [Comparison with other DBs](#comparison-with-other-dbs) - - [History & Acknowledgments](#history) -- [Main features](#main-features) -- [Performance comparison](#performance-comparison) - - [Integral performance](#integral-performance) - - [Read scalability](#read-scalability) - - [Sync-write mode](#sync-write-mode) - - [Lazy-write mode](#lazy-write-mode) - - [Async-write mode](#async-write-mode) - - [Cost comparison](#cost-comparison) -- [Gotchas](#gotchas) - - [Long-time read transactions problem](#long-time-read-transactions-problem) - - [Data safety in async-write-mode](#data-safety-in-async-write-mode) -- [Improvements over LMDB](#improvements-over-lmdb) - - -## Overview - -_libmdbx_ is an embedded lightweight key-value database engine oriented for performance under Linux and Windows. - -_libmdbx_ allows multiple processes to read and update several key-value tables concurrently, -while being [ACID](https://en.wikipedia.org/wiki/ACID)-compliant, with minimal overhead and operation cost of Olog(N). - -_libmdbx_ provides -[serializability](https://en.wikipedia.org/wiki/Serializability) and consistency of data after crash. -Read-write transactions don't block read-only transactions and are -[serialized](https://en.wikipedia.org/wiki/Serializability) by [mutex](https://en.wikipedia.org/wiki/Mutual_exclusion). - -_libmdbx_ [wait-free](https://en.wikipedia.org/wiki/Non-blocking_algorithm#Wait-freedom) provides parallel read transactions -without atomic operations or synchronization primitives. - -_libmdbx_ uses [B+Trees](https://en.wikipedia.org/wiki/B%2B_tree) and [mmap](https://en.wikipedia.org/wiki/Memory-mapped_file), -doesn't use [WAL](https://en.wikipedia.org/wiki/Write-ahead_logging). This might have caveats for some workloads. - -### Comparison with other DBs - -Because _libmdbx_ is currently overhauled, I think it's better to just link -[chapter of Comparison with other databases](https://github.com/coreos/bbolt#comparison-with-other-databases) here. - -### History - -The _libmdbx_ design is based on [Lightning Memory-Mapped Database](https://en.wikipedia.org/wiki/Lightning_Memory-Mapped_Database). -Initial development was going in [ReOpenLDAP](https://github.com/leo-yuriev/ReOpenLDAP) project, about a year later it -received separate development effort and in autumn 2015 was isolated to separate project, which was -[presented at Highload++ 2015 conference](http://www.highload.ru/2015/abstracts/1831.html). - -Since early 2017 _libmdbx_ is used in [Fast Positive Tables](https://github.com/leo-yuriev/libfpta), -by [Positive Technologies](https://www.ptsecurity.com). - -#### Acknowledgments - -Howard Chu (Symas Corporation) - the author of LMDB, -from which originated the MDBX in 2015. - -Martin Hedenfalk <martin@bzero.se> - the author of `btree.c` code, -which was used for begin development of LMDB. - - -Main features -============= - -_libmdbx_ inherits all keys features and characteristics from -[LMDB](https://en.wikipedia.org/wiki/Lightning_Memory-Mapped_Database): - -1. Data is stored in ordered map, keys are always sorted, range lookups are supported. - -2. Data is [mmaped](https://en.wikipedia.org/wiki/Memory-mapped_file) to memory of each worker DB process, read transactions are zero-copy. - -3. Transactions are [ACID](https://en.wikipedia.org/wiki/ACID)-compliant, thanks to - [MVCC](https://en.wikipedia.org/wiki/Multiversion_concurrency_control) and [CoW](https://en.wikipedia.org/wiki/Copy-on-write). - Writes are strongly serialized and aren't blocked by reads, transactions can't conflict with each other. - Reads are guaranteed to get only commited data - ([relaxing serializability](https://en.wikipedia.org/wiki/Serializability#Relaxing_serializability)). - -4. Reads and queries are [non-blocking](https://en.wikipedia.org/wiki/Non-blocking_algorithm), - don't use [atomic operations](https://en.wikipedia.org/wiki/Linearizability#High-level_atomic_operations). - Readers don't block each other and aren't blocked by writers. Read performance scales linearly with CPU core count. - > Though "connect to DB" (start of first read transaction in thread) and "disconnect from DB" (shutdown or thread - > termination) requires to acquire a lock to register/unregister current thread from "readers table" - -5. Keys with multiple values are stored efficiently without key duplication, sorted by value, including integers - (reasonable for secondary indexes). - -6. Efficient operation on short fixed length keys, including integer ones. - -7. [WAF](https://en.wikipedia.org/wiki/Write_amplification) (Write Amplification Factor) и RAF (Read Amplification Factor) - are Olog(N). - -8. No [WAL](https://en.wikipedia.org/wiki/Write-ahead_logging) and transaction journal. - In case of a crash no recovery needed. No need for regular maintenance. Backups can be made on the fly on working DB - without freezing writers. - -9. No custom memory management, all done with standard OS syscalls. - - -Performance comparison -===================== - -All benchmarks were done by [IOArena](https://github.com/pmwkaa/ioarena) -and multiple [scripts](https://github.com/pmwkaa/ioarena/tree/HL%2B%2B2015) -runs on Lenovo Carbon-2 laptop, i7-4600U 2.1 GHz, 8 Gb RAM, -SSD SAMSUNG MZNTD512HAGL-000L1 (DXT23L0Q) 512 Gb. - --------------------------------------------------------------------------------- - -### Integral performance - -Here showed sum of performance metrics in 3 benchmarks: - - - Read/Search on 4 CPU cores machine; - - - Transactions with [CRUD](https://en.wikipedia.org/wiki/CRUD) operations - in sync-write mode (fdatasync is called after each transaction); - - - Transactions with [CRUD](https://en.wikipedia.org/wiki/CRUD) operations - in lazy-write mode (moment to sync data to persistent storage is decided by OS). - -*Reasons why asynchronous mode isn't benchmarked here:* - - 1. It doesn't make sense as it has to be done with DB engines, oriented for keeping data in memory e.g. - [Tarantool](https://tarantool.io/), [Redis](https://redis.io/)), etc. - - 2. Performance gap is too high to compare in any meaningful way. - - - --------------------------------------------------------------------------------- - -### Read Scalability - -Summary performance with concurrent read/search queries in 1-2-4-8 threads on 4 CPU cores machine. - - - --------------------------------------------------------------------------------- - -### Sync-write mode - - - Linear scale on left and dark rectangles mean arithmetic mean transactions per second; - - - Logarithmic scale on right is in seconds and yellow intervals mean execution time of transactions. - Each interval shows minimal and maximum execution time, cross marks standard deviation. - -**10,000 transactions in sync-write mode**. In case of a crash all data is consistent and state is right after last successful transaction. [fdatasync](https://linux.die.net/man/2/fdatasync) syscall is used after each write transaction in this mode. - -In the benchmark each transaction contains combined CRUD operations (2 inserts, 1 read, 1 update, 1 delete). -Benchmark starts on empty database and after full run the database contains 10,000 small key-value records. - - - --------------------------------------------------------------------------------- - -### Lazy-write mode - - - Linear scale on left and dark rectangles mean arithmetic mean of thousands transactions per second; - - - Logarithmic scale on right in seconds and yellow intervals mean execution time of transactions. Each interval shows minimal and maximum execution time, cross marks standard deviation. - -**100,000 transactions in lazy-write mode**. -In case of a crash all data is consistent and state is right after one of last transactions, but transactions after it -will be lost. Other DB engines use [WAL](https://en.wikipedia.org/wiki/Write-ahead_logging) or transaction journal for that, -which in turn depends on order of operations in journaled filesystem. _libmdbx_ doesn't use WAL and hands I/O operations -to filesystem and OS kernel (mmap). - -In the benchmark each transaction contains combined CRUD operations (2 inserts, 1 read, 1 update, 1 delete). -Benchmark starts on empty database and after full run the database contains 100,000 small key-value records. - - - - --------------------------------------------------------------------------------- - -### Async-write mode - - - Linear scale on left and dark rectangles mean arithmetic mean of thousands transactions per second; - - - Logarithmic scale on right in seconds and yellow intervals mean execution time of transactions. Each interval shows minimal and maximum execution time, cross marks standard deviation. - -**1,000,000 transactions in async-write mode**. In case of a crash all data will be consistent and state will be right after one of last transactions, but lost transaction count is much higher than in lazy-write mode. All DB engines in this mode do as little writes as possible on persistent storage. _libmdbx_ uses [msync(MS_ASYNC)](https://linux.die.net/man/2/msync) in this mode. - -In the benchmark each transaction contains combined CRUD operations (2 inserts, 1 read, 1 update, 1 delete). -Benchmark starts on empty database and after full run the database contains 10,000 small key-value records. - - - --------------------------------------------------------------------------------- - -### Cost comparison - -Summary of used resources during lazy-write mode benchmarks: - - - Read and write IOPS; - - - Sum of user CPU time and sys CPU time; - - - Used space on persistent storage after the test and closed DB, but not waiting for the end of all internal - housekeeping operations (LSM compactification, etc). - -_ForestDB_ is excluded because benchmark showed it's resource consumption for each resource (CPU, IOPS) much higher than other engines which prevents to meaningfully compare it with them. - -All benchmark data is gathered by [getrusage()](http://man7.org/linux/man-pages/man2/getrusage.2.html) syscall and by -scanning data directory. - - - --------------------------------------------------------------------------------- - -## Gotchas - -1. At one moment there can be only one writer. But this allows to serialize writes and eliminate any possibility - of conflict or logical errors during transaction rollback. - -2. No [WAL](https://en.wikipedia.org/wiki/Write-ahead_logging) means relatively - big [WAF](https://en.wikipedia.org/wiki/Write_amplification) (Write Amplification Factor). - Because of this syncing data to disk might be quite resource intensive and be main performance bottleneck - during intensive write workload. - > As compromise _libmdbx_ allows several modes of lazy and/or periodic syncing, including `MAPASYNC` mode, which modificate - > data in memory and asynchronously syncs data to disk, moment to sync is picked by OS. - > - > Although this should be used with care, synchronous transactions in a DB with transaction journal will require 2 IOPS - > minimum (probably 3-4 in practice) because of filesystem overhead, overhead depends on filesystem, not on record - > count or record size. In _libmdbx_ IOPS count will grow logarithmically depending on record count in DB (height of B+ tree) - > and will require at least 2 IOPS per transaction too. - -3. [CoW](https://en.wikipedia.org/wiki/Copy-on-write) - for [MVCC](https://en.wikipedia.org/wiki/Multiversion_concurrency_control) is done on memory page level with [B+ - trees](https://ru.wikipedia.org/wiki/B-%D0%B4%D0%B5%D1%80%D0%B5%D0%B2%D0%BE). - Therefore altering data requires to copy about Olog(N) memory pages, which uses [memory bandwidth](https://en.wikipedia.org/wiki/Memory_bandwidth) and is main performance bottleneck in `MAPASYNC` mode. - > This is unavoidable, but isn't that bad. Syncing data to disk requires much more similar operations which will - > be done by OS, therefore this is noticeable only if data sync to persistent storage is fully disabled. - > _libmdbx_ allows to safely save data to persistent storage with minimal performance overhead. If there is no need - > to save data to persistent storage then it's much more preferable to use `std::map`. - - -4. LMDB has a problem of long-time readers which degrades performance and bloats DB - > _libmdbx_ addresses that, details below. - -5. _LMDB_ is susceptible to DB corruption in `WRITEMAP+MAPASYNC` mode. - _libmdbx_ in `WRITEMAP+MAPASYNC` guarantees DB integrity and consistency of data. - > Additionally there is an alternative: `UTTERLY_NOSYNC` mode. Details below. - - -#### Long-time read transactions problem - -Garbage collection problem exists in all databases one way or another (e.g. VACUUM in PostgreSQL). -But in _libmdbx_ and LMDB it's even more important because of high performance and deliberate -simplification of internals with emphasis on performance. - -* Altering data during long read operation may exhaust available space on persistent storage. - -* If available space is exhausted then any attempt to update data - results in `MAP_FULL` error until long read operation ends. - -* Main examples of long readers is hot backup - and debugging of client application which actively uses read transactions. - -* In _LMDB_ this results in degraded performance of all operations - of syncing data to persistent storage. - -* _libmdbx_ has a mechanism which aborts such operations and `LIFO RECLAIM` - mode which addresses performance degradation. - -Read operations operate only over snapshot of DB which is consistent on the moment when read transaction started. -This snapshot doesn't change throughout the transaction but this leads to inability to reclaim the pages until -read transaction ends. - -In _LMDB_ this leads to a problem that memory pages, allocated for operations during long read, will be used for operations -and won't be reclaimed until DB process terminates. In _LMDB_ they are used in -[FIFO](https://en.wikipedia.org/wiki/FIFO_(computing_and_electronics)) manner, which causes increased page count -and less chance of cache hit during I/O. In other words: one long-time reader can impact performance of all database -until it'll be reopened. - -_libmdbx_ addresses the problem, details below. Illustrations to this problem can be found in the -[presentation](http://www.slideshare.net/leoyuriev/lmdb). There is also example of performance increase thanks to -[BBWC](https://en.wikipedia.org/wiki/Disk_buffer#Write_acceleration) when `LIFO RECLAIM` enabled in _libmdbx_. - -#### Data safety in async-write mode - -In `WRITEMAP+MAPSYNC` mode dirty pages are written to persistent storage by kernel. This means that in case of application -crash OS kernel will write all dirty data to disk and nothing will be lost. But in case of hardware malfunction or OS kernel -fatal error only some dirty data might be synced to disk, and there is high probability that pages with metadata saved, -will point to non-saved, hence non-existent, data pages. In such situation, DB is completely corrupted and can't be -repaired even if there was full sync before the crash via `mdbx_env_sync(). - -_libmdbx_ addresses this by fully reimplementing write path of data: - -* In `WRITEMAP+MAPSYNC` mode meta-data pages aren't updated in place, instead their shadow copies are used and their updates - are synced after data is flushed to disk. - -* During transaction commit _libmdbx_ marks synchronization points as steady or weak depending on how much synchronization - needed between RAM and persistent storage, e.g. in `WRITEMAP+MAPSYNC` commited transactions are marked as weak, - but during explicit data synchronization - as steady. - -* _libmdbx_ maintains three separate meta-pages instead of two. This allows to commit transaction with steady or -weak synchronization point without losing two previous synchronization points (one of them can be steady, and second - weak). -This allows to order weak and steady synchronization points in any order without losing consistency in case of system crash. - -* During DB open _libmdbx_ rollbacks to the last steady synchronization point, this guarantees database integrity. - -For data safety pages which form database snapshot with steady synchronization point must not be updated until next steady -synchronization point. So last steady synchronization point creates "long-time read" effect. The only difference that in case -of memory exhaustion the problem will be immediately addressed by flushing changes to persistent storage and forming new steady -synchronization point. - -So in async-write mode _libmdbx_ will always use new pages until memory is exhausted or `mdbx_env_sync()` is invoked. Total -disk usage will be almost the same as in sync-write mode. - -Current _libmdbx_ gives a choice of safe async-write mode (default) and `UTTERLY_NOSYNC` mode which may result in full DB -corruption during system crash as with LMDB. - -Next version of _libmdbx_ will create steady synchronization points automatically in async-write mode. - --------------------------------------------------------------------------------- - -Improvements over LMDB -================================================ - -1. `LIFO RECLAIM` mode: - - The newest pages are picked for reuse instead of the oldest. - This allows to minimize reclaim loop and make it execution time independent of total page count. - - This results in OS kernel cache mechanisms working with maximum efficiency. - In case of using disk controllers or storages with - [BBWC](https://en.wikipedia.org/wiki/Disk_buffer#Write_acceleration) this may greatly improve - write performance. - -2. `OOM-KICK` callback. - - `mdbx_env_set_oomfunc()` allows to set a callback, which will be called - in the event of memory exhausting during long-time read transaction. - Callback will be invoked with PID and pthread_id of offending thread as parameters. - Callback can do any of these things to remedy the problem: - - * wait for read transaction to finish normally; - - * kill the offending process (signal 9), if separate process is doing long-time read; - - * abort or restart offending read transaction if it's running in sibling thread; - - * abort current write transaction with returning error code. - -3. Guarantee of DB integrity in `WRITEMAP+MAPSYNC` mode: - > Current _libmdbx_ gives a choice of safe async-write mode (default) - > and `UTTERLY_NOSYNC` mode which may result in full - > DB corruption during system crash as with LMDB. For details see - > [Data safety in async-write mode](#data-safety-in-async-write-mode). - -4. Automatic creation of synchronization points (flush changes to persistent storage) - when changes reach set threshold (threshold can be set by `mdbx_env_set_syncbytes()`). - -5. Ability to get how far current read-only snapshot is from latest version of the DB by `mdbx_txn_straggler()`. - -6. `mdbx_chk` tool for DB checking and `mdbx_env_pgwalk()` for page-walking all pages in DB. - -7. Control over debugging and receiving of debugging messages via `mdbx_setup_debug()`. - -8. Ability to assign up to 3 markers to commiting transaction with `mdbx_canary_put()` and then get them in read transaction - by `mdbx_canary_get()`. - -9. Check if there is a row with data after current cursor position via `mdbx_cursor_eof()`. - -10. Ability to explicitly request update of present record without creating new record. Implemented as `MDBX_CURRENT` flag - for `mdbx_put()`. - -11. Ability to update or delete record and get previous value via `mdbx_replace()` Also can update specific multi-value. - -12. Support for keys and values of zero length, including sorted duplicates. - -13. Fixed `mdbx_cursor_count()`, which returns correct count of duplicated for all table types and any cursor position. - -14. Ability to open DB in exclusive mode with `MDBX_EXCLUSIVE` flag, e.g. for integrity check. - -15. Ability to close DB in "dirty" state (without data flush and creation of steady synchronization point) - via `mdbx_env_close_ex()`. - -16. Ability to get additional info, including number of the oldest snapshot of DB, which is used by one of the readers. - Implemented via `mdbx_env_info()`. - -17. `mdbx_del()` doesn't ignore additional argument (specifier) `data` - for tables without duplicates (without flag `MDBX_DUPSORT`), if `data` is not zero then always uses it to verify - record, which is being deleted. - -18. Ability to open dbi-table with simultaneous setup of comparators for keys and values, via `mdbx_dbi_open_ex()`. - -19. Ability to find out if key or value is in dirty page. This may be useful to make a decision to avoid - excessive CoW before updates. Implemented via `mdbx_is_dirty()`. - -20. Correct update of current record in `MDBX_CURRENT` mode of `mdbx_cursor_put()`, including sorted duplicated. - -21. All cursors in all read and write transactions can be reused by `mdbx_cursor_renew()` and MUST be freed explicitly. - > ## Caution, please pay attention! - > - > This is the only change of API, which changes semantics of cursor management - > and can lead to memory leaks on misuse. This is a needed change as it eliminates ambiguity - > which helps to avoid such errors as: - > - use-after-free; - > - double-free; - > - memory corruption and segfaults. - -22. Additional error code `MDBX_EMULTIVAL`, which is returned by `mdbx_put()` and - `mdbx_replace()` in case is ambiguous update or delete. - -23. Ability to get value by key and duplicates count by `mdbx_get_ex()`. - -24. Functions `mdbx_cursor_on_first() and mdbx_cursor_on_last(), which allows to know if cursor is currently on first or - last position respectively. - -25. If read transaction is aborted via `mdbx_txn_abort()` or `mdbx_txn_reset()` then DBI-handles, which were opened in it, - aren't closed or deleted. This allows to avoid several types of hard-to-debug errors. - -26. Sequence generation via `mdbx_dbi_sequence()`. - -27. Advanced dynamic control over DB size, including ability to choose page size via `mdbx_env_set_geometry()`, - including on Windows. - -28. Three meta-pages instead of two, this allows to guarantee consistently update weak sync-points without risking to - corrupt last steady sync-point. - -29. Automatic reclaim of freed pages to specific reserved space at the end of database file. This lowers amount of pages, - loaded to memory, used in update/flush loop. In fact _libmdbx_ constantly performs compactification of data, - but doesn't use additional resources for that. Space reclaim of DB and setup of database geometry parameters also decreases - size of the database on disk, including on Windows. - --------------------------------------------------------------------------------- - -``` -$ objdump -f -h -j .text libmdbx.so - -libmdbx.so: file format elf64-x86-64 -architecture: i386:x86-64, flags 0x00000150: -HAS_SYMS, DYNAMIC, D_PAGED -start address 0x000030e0 - -Sections: -Idx Name Size VMA LMA File off Algn - 11 .text 00014d84 00000000000030e0 00000000000030e0 000030e0 2**4 - CONTENTS, ALLOC, LOAD, READONLY, CODE - -``` - -``` -$ gcc -v -Using built-in specs. -COLLECT_GCC=gcc -COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper -OFFLOAD_TARGET_NAMES=nvptx-none -OFFLOAD_TARGET_DEFAULT=1 -Target: x86_64-linux-gnu -Configured with: ../src/configure -v --with-pkgversion='Ubuntu 7.2.0-8ubuntu3' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-7 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie --with-system-zlib --with-target-system-zlib --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu -Thread model: posix -gcc version 7.2.0 (Ubuntu 7.2.0-8ubuntu3) -``` diff --git a/plugins/Dbx_mdbx/src/libmdbx/TODO.md b/plugins/Dbx_mdbx/src/libmdbx/TODO.md deleted file mode 100644 index 810b18dc4a..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/TODO.md +++ /dev/null @@ -1,89 +0,0 @@ -Допеределки -=========== -- [ ] Перевод mdbx-tools на С++ и сборка для Windows. -- [ ] Переход на CMake, замена заглушек mdbx_version и mdbx_build. -- [ ] Актуализация README.md -- [ ] Переход на C++11, добавление #pramga detect_mismatch(). -- [ ] Убрать MDB_DEBUG (всегда: логирование важный ситуаций и ошибок, опционально: включение ассертов и трассировка). -- [ ] Заменить mdbx_debug на mdbx_trace, и почистить... -- [ ] Заметить максимум assert() на mdbx_assert(env, ...). - -Качество и CI -============= -- [ ] Добавить в CI linux сборки для 32-битных таргетов. - -Доработки API -============= -- [ ] Поправить/Добавить описание нового API. -- [ ] Добавить возможность "подбора" режима для mdbx_env_open(). -- [ ] Переименовать в API: env->db, db->tbl. - -Тесты -===== -- [ ] Тестирование поддержки lockless-режима. -- [x] Додумать имя и размещение тестовой БД по-умолчанию. -- [ ] Реализовать cleanup в тесте. -- [ ] usage для теста. -- [ ] Логирование в файл, плюс более полный progress bar. -- [ ] Опция игнорирования (пропуска части теста) при переполнении БД. -- [ ] Базовый бенчмарк. - -Развитие -======== -- [ ] Отслеживание времени жизни DBI-хендлов. -- [ ] Отрефакторить mdbx_freelist_save(). -- [ ] Хранить "свободный хвост" не связанный с freeDB в META. -- [x] Возврат выделенных страниц в unallocated tail-pool. -- [ ] Валидатор страниц БД по номеру транзакции: - ~0 при переработке и номер транзакции при выделении, - проверять что этот номер больше головы реклайминга и не-больше текущей транзакции. -- [ ] Размещение overflow-pages в отдельном mmap/файле с собственной геометрией. -- [ ] Зафиксировать формат БД. -- [ ] Валидатор страниц по CRC32, плюс контроль номер транзакии под модулю 2^32. -- [ ] Валидатор страниц по t1ha c контролем снимков/версий БД на основе Merkle Tree. -- [ ] Возможность хранения ключей внутри data (libfptu). -- [ ] Асинхронная фиксация (https://github.com/leo-yuriev/libmdbx/issues/5). -- [ ] (Пере)Выделять память под IDL-списки с учетом реального кол-ва страниц, т.е. max(MDB_IDL_UM_MAX/MDB_IDL_UM_MAX, npages). - ------------------------------------------------------------------------ - -Сделано -======= -- [x] разделение errno и GetLastError(). -- [x] CI посредством AppVeyor. -- [x] тест конкурентного доступа. -- [x] тест основного функционала (заменить текущий треш). -- [x] uint32/uint64 в структурах. -- [x] Завершить переименование. -- [x] Макросы версионности, сделать как в fpta (cmake?). -- [x] Попробовать убрать yield (или что там с местом?). -- [x] trinity для copy/compaction. -- [x] trinity для mdbx_chk и mdbx_stat. -- [x] проверки с mdbx_meta_eq. -- [x] Не проверять режим при открытии в readonly. -- [x] Поправить выбор tail в mdbx_chk. -- [x] Там-же проверять позицию реклайминга. -- [x] поправить проблему открытия после READ-ONLY. -- [x] static-assertы на размер/выравнивание lck, meta и т.п. -- [x] Зачистить size_t. -- [x] Добавить локи вокруг dbi. -- [x] Привести в порядок volatile. -- [x] контроль meta.mapsize. -- [x] переработка формата: заголовки страниц, meta, clk... -- [x] зачистка Doxygen и бесполезных комментариев. -- [x] Добавить поле типа контрольной суммы. -- [x] Добавить поле/флаг размера pgno_t. -- [x] Поменять сигнатуры. -- [x] Добавить мета-страницы в coredump, проверить lck. -- [x] Сделать список для txnid_t, кода sizeof(txnid_t) > sizeof(pgno_t) и вернуть размер pgno_t. -- [x] Избавиться от умножения на размер страницы (заменить на сдвиг). -- [x] Устранение всех предупреждений (в том числе под Windows). -- [x] Добавить 'mti_reader_finished_flag'. -- [x] Погасить все level4-warnings от MSVC, включить /WX. -- [x] Проверка посредством Coverity с гашением всех дефектов. -- [x] Полная матрица Windows-сборок (2013/2015/2017). -- [x] Дать возможность задавать размер страницы при создании БД. -- [x] Изменение mapsize через API с блокировкой и увеличением txn. -- [x] Контроль размера страницы полного размера и кол-ва страниц при создании и обновлении. -- [x] Инкрементальный mmap. -- [x] Инкрементальное приращение размера (колбэк стратегии?). diff --git a/plugins/Dbx_mdbx/src/libmdbx/appveyor.yml b/plugins/Dbx_mdbx/src/libmdbx/appveyor.yml deleted file mode 100644 index d002453fdd..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/appveyor.yml +++ /dev/null @@ -1,52 +0,0 @@ -version: 0.2.0.{build} - -environment: - matrix: - - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017 - TOOLSET: v141 - - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015 - TOOLSET: v140 - - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013 - TOOLSET: v120 - -branches: - except: - - coverity_scan - -configuration: -- Debug -- Release - -platform: -- x86 -- x64 -#- ARM - -build_script: -- ps: > - msbuild "C:\projects\libmdbx\mdbx.sln" /verbosity:minimal - /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" - /property:PlatformToolset=$env:TOOLSET - /property:Configuration=$env:CONFIGURATION - /property:Platform=$env:PLATFORM - -test_script: -- ps: | - if (($env:PLATFORM -eq "x86") -and (Test-Path "C:\projects\libmdbx\Win32\$env:CONFIGURATION\test.exe" -PathType Leaf)) { - $test = "C:\projects\libmdbx\Win32\$env:CONFIGURATION\test.exe" - $mdbx_chk = "C:\projects\libmdbx\Win32\$env:CONFIGURATION\mdbx_chk.exe" - } elseif (($env:PLATFORM -ne "ARM") -and ($env:PLATFORM -ne "ARM64")) { - $test = "C:\projects\libmdbx\$env:PLATFORM\$env:CONFIGURATION\test.exe" - $mdbx_chk = "C:\projects\libmdbx\$env:PLATFORM\$env:CONFIGURATION\mdbx_chk.exe" - } else { - $test = "" - $mdbx_chk = "" - } - - if ($test -ne "") { - & "$test" --pathname=tmp.db --dont-cleanup-after basic | Tee-Object -file test.log | Select-Object -last 42 - & "$mdbx_chk" -nvv tmp.db | Tee-Object -file chk.log | Select-Object -last 42 - } - -on_failure: -- ps: Push-AppveyorArtifact test.log chk.log diff --git a/plugins/Dbx_mdbx/src/libmdbx/build.sh b/plugins/Dbx_mdbx/src/libmdbx/build.sh deleted file mode 100644 index 5170882265..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/build.sh +++ /dev/null @@ -1,18 +0,0 @@ -#!/bin/bash -set -e -CONFIG=$1 - -if [[ -z "${CONFIG}" ]]; then - CONFIG=Debug -fi -if [[ -r /opt/rh/devtoolset-6/enable ]]; then - source /opt/rh/devtoolset-6/enable -fi -#rm -f -r build || true -mkdir -p cmake-build-${CONFIG} -pushd cmake-build-${CONFIG} &> /dev/null -if [[ ! -r Makefile ]]; then - cmake .. -DCMAKE_BUILD_TYPE=${CONFIG} -fi -make -j8 || exit 1 -popd &> /dev/null diff --git a/plugins/Dbx_mdbx/src/libmdbx/dll.vcxproj b/plugins/Dbx_mdbx/src/libmdbx/dll.vcxproj deleted file mode 100644 index 746de67bd9..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/dll.vcxproj +++ /dev/null @@ -1,181 +0,0 @@ -<?xml version="1.0" encoding="utf-8"?> -<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> - 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<ClCompile Include="src\mdbx.c" /> - <ClCompile Include="src\osal.c" /> - <ClCompile Include="src\version.c" /> - </ItemGroup> - <ItemGroup> - <ClInclude Include="mdbx.h" /> - <ClInclude Include="src\bits.h" /> - <ClInclude Include="src\defs.h" /> - <ClInclude Include="src\osal.h" /> - </ItemGroup> - <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" /> - <ImportGroup Label="ExtensionTargets"> - </ImportGroup> -</Project> diff --git a/plugins/Dbx_mdbx/src/libmdbx/libmdbx.config b/plugins/Dbx_mdbx/src/libmdbx/libmdbx.config deleted file mode 100644 index e0284f4257..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/libmdbx.config +++ /dev/null @@ -1,2 +0,0 @@ -// Add predefined macros for your project here. For example: -// #define THE_ANSWER 42 diff --git a/plugins/Dbx_mdbx/src/libmdbx/libmdbx.creator b/plugins/Dbx_mdbx/src/libmdbx/libmdbx.creator deleted file mode 100644 index e94cbbd302..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/libmdbx.creator +++ /dev/null @@ -1 +0,0 @@ -[General] diff --git a/plugins/Dbx_mdbx/src/libmdbx/libmdbx.files b/plugins/Dbx_mdbx/src/libmdbx/libmdbx.files deleted file mode 100644 index 38125146e4..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/libmdbx.files +++ /dev/null @@ -1,58 +0,0 @@ -CMakeLists.txt -README-RU.md -pcrf_test/CMakeLists.txt -src/tools/CMakeLists.txt -test/CMakeLists.txt -tutorial/CMakeLists.txt -tutorial/sample-mdbx.c -AUTHORS -LICENSE -Makefile -README.md -TODO.md -mdbx.h -src/bits.h -src/defs.h -src/lck-posix.c -src/lck-windows.c -src/mdbx.c -src/osal.c -src/osal.h -src/tools/mdbx_chk.c -src/tools/mdbx_copy.1 -src/tools/mdbx_copy.c -src/tools/mdbx_dump.1 -src/tools/mdbx_dump.c -src/tools/mdbx_load.1 -src/tools/mdbx_load.c -src/tools/mdbx_stat.1 -src/tools/mdbx_stat.c -src/tools/wingetopt.c -src/tools/wingetopt.h -src/version.c -test/actor.cc -test/base.h -test/chrono.cc -test/chrono.h -test/config.h -test/dead.cc -test/hill.cc -test/jitter.cc -test/keygen.cc -test/keygen.h -test/log.cc -test/log.h -test/main.cc -test/config.cc -test/cases.cc -test/osal-unix.cc -test/osal-windows.cc -test/osal.h -test/test.cc -test/test.h -test/try.cc -test/utils.cc -test/utils.h -tutorial/README.md -tutorial/sample-bdb.txt -tutorial/sample-mdb.txt diff --git a/plugins/Dbx_mdbx/src/libmdbx/libmdbx.includes b/plugins/Dbx_mdbx/src/libmdbx/libmdbx.includes deleted file mode 100644 index 0b5ade5690..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/libmdbx.includes +++ /dev/null @@ -1,6 +0,0 @@ -. -src -src/tools -test -pcrf_test -tutorial diff --git a/plugins/Dbx_mdbx/src/libmdbx/mdbx.h b/plugins/Dbx_mdbx/src/libmdbx/mdbx.h deleted file mode 100644 index 35faed8488..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/mdbx.h +++ /dev/null @@ -1,1896 +0,0 @@ -/* LICENSE AND COPYRUSTING ***************************************************** - * - * Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - * - * --- - * - * This code is derived from "LMDB engine" written by - * Howard Chu (Symas Corporation), which itself derived from btree.c - * written by Martin Hedenfalk. - * - * --- - * - * Portions Copyright 2011-2015 Howard Chu, Symas Corp. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - * - * --- - * - * Portions Copyright (c) 2009, 2010 Martin Hedenfalk <martin@bzero.se> - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ - -/* ACKNOWLEDGEMENTS ************************************************************ - * - * Howard Chu (Symas Corporation) - the author of LMDB, - * from which originated the MDBX in 2015. - * - * Martin Hedenfalk <martin@bzero.se> - the author of `btree.c` code, - * which was used for begin development of LMDB. */ - -#pragma once -#ifndef LIBMDBX_H -#define LIBMDBX_H - -/* IMPENDING CHANGES WARNING *************************************************** - * - * MDBX is under active development, database format and API aren't stable - * at least until 2018Q2. New version won't be backwards compatible. Main focus - * of the rework is to provide clear and robust API and new features. - * - ******************************************************************************/ - -#ifdef _MSC_VER -#pragma warning(push, 1) -#pragma warning(disable : 4548) /* expression before comma has no effect; \ - expected expression with side - effect */ -#pragma warning(disable : 4530) /* C++ exception handler used, but unwind \ - * semantics are not enabled. Specify /EHsc */ -#pragma warning(disable : 4577) /* 'noexcept' used with no exception handling \ - * mode specified; termination on exception is \ - * not guaranteed. Specify /EHsc */ -#endif /* _MSC_VER (warnings) */ - -#include <stdarg.h> -#include <stddef.h> -#include <stdint.h> - -#if defined(_WIN32) || defined(_WIN64) - -#include <windows.h> -#include <winnt.h> - -#ifndef FSCTL_GET_EXTERNAL_BACKING -#define FSCTL_GET_EXTERNAL_BACKING CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 196, METHOD_BUFFERED, FILE_ANY_ACCESS) -#endif - -#ifndef __mode_t_defined -typedef unsigned short mode_t; -#endif -typedef HANDLE mdbx_filehandle_t; -typedef DWORD mdbx_pid_t; -typedef DWORD mdbx_tid_t; -#define MDBX_ENODATA ERROR_HANDLE_EOF -#define MDBX_EINVAL ERROR_INVALID_PARAMETER -#define MDBX_EACCESS ERROR_ACCESS_DENIED -#define MDBX_ENOMEM ERROR_OUTOFMEMORY -#define MDBX_EROFS ERROR_FILE_READ_ONLY -#define MDBX_ENOSYS ERROR_NOT_SUPPORTED -#define MDBX_EIO ERROR_WRITE_FAULT -#define MDBX_EPERM ERROR_INVALID_FUNCTION -#define MDBX_EINTR ERROR_CANCELLED -#define MDBX_ENOFILE ERROR_FILE_NOT_FOUND - -#else - -#include <errno.h> /* for error codes */ -#include <pthread.h> /* for pthread_t */ -#include <sys/types.h> /* for pid_t */ -#include <sys/uio.h> /* for truct iovec */ -#define HAVE_STRUCT_IOVEC 1 -typedef int mdbx_filehandle_t; -typedef pid_t mdbx_pid_t; -typedef pthread_t mdbx_tid_t; -#define MDBX_ENODATA ENODATA -#define MDBX_EINVAL EINVAL -#define MDBX_EACCESS EACCES -#define MDBX_ENOMEM ENOMEM -#define MDBX_EROFS EROFS -#define MDBX_ENOSYS ENOSYS -#define MDBX_EIO EIO -#define MDBX_EPERM EPERM -#define MDBX_EINTR EINTR -#define MDBX_ENOFILE ENOENT - -#endif - -#ifdef _MSC_VER -#pragma warning(pop) -#endif - -/*--------------------------------------------------------------------------*/ - -#ifndef __has_attribute -#define __has_attribute(x) (0) -#endif - -#ifndef __dll_export -#if defined(_WIN32) || defined(__CYGWIN__) -#if defined(__GNUC__) || __has_attribute(dllexport) -#define __dll_export __attribute__((dllexport)) -#elif defined(_MSC_VER) -#define __dll_export __declspec(dllexport) -#else -#define __dll_export -#endif -#elif defined(__GNUC__) || __has_attribute(visibility) -#define __dll_export __attribute__((visibility("default"))) -#else -#define __dll_export -#endif -#endif /* __dll_export */ - -#ifndef __dll_import -#if defined(_WIN32) || defined(__CYGWIN__) -#if defined(__GNUC__) || __has_attribute(dllimport) -#define __dll_import __attribute__((dllimport)) -#elif defined(_MSC_VER) -#define __dll_import __declspec(dllimport) -#else -#define __dll_import -#endif -#else -#define __dll_import -#endif -#endif /* __dll_import */ - -/*--------------------------------------------------------------------------*/ - -#define MDBX_VERSION_MAJOR 0 -#define MDBX_VERSION_MINOR 2 - -#if defined(LIBMDBX_EXPORTS) -#define LIBMDBX_API __dll_export -#elif defined(LIBMDBX_IMPORTS) -#define LIBMDBX_API __dll_import -#else -#define LIBMDBX_API -#endif /* LIBMDBX_API */ - -#ifdef __cplusplus -extern "C" { -#endif - -typedef struct mdbx_version_info { - uint8_t major; - uint8_t minor; - uint16_t release; - uint32_t revision; - struct { - const char *datetime; - const char *tree; - const char *commit; - const char *describe; - } git; -} mdbx_version_info; - -typedef struct mdbx_build_info { - const char *datetime; - const char *target; - const char *options; - const char *compiler; - const char *flags; -} mdbx_build_info; - -extern LIBMDBX_API const mdbx_version_info mdbx_version; -extern LIBMDBX_API const mdbx_build_info mdbx_build; - -#if defined(_WIN32) || defined(_WIN64) - -/* Dll initialization callback for ability to dynamically load MDBX DLL by - * LoadLibrary() on Windows versions before Windows Vista. This function MUST be - * called once from DllMain() for each reason (DLL_PROCESS_ATTACH, - * DLL_PROCESS_DETACH, DLL_THREAD_ATTACH and DLL_THREAD_DETACH). Do this - * carefully and ONLY when actual Windows version don't support initialization - * via "TLS Directory" (e.g .CRT$XL[A-Z] sections in executable or dll file). */ - -#ifndef MDBX_CONFIG_MANUAL_TLS_CALLBACK -#define MDBX_CONFIG_MANUAL_TLS_CALLBACK 0 -#endif -#if MDBX_CONFIG_MANUAL_TLS_CALLBACK -void LIBMDBX_API NTAPI mdbx_dll_callback(PVOID module, DWORD reason, - PVOID reserved); -#endif /* MDBX_CONFIG_MANUAL_TLS_CALLBACK */ -#endif /* Windows */ - -/* The name of the lock file in the DB environment */ -#define MDBX_LOCKNAME "/mdbx.lck" -/* The name of the data file in the DB environment */ -#define MDBX_DATANAME "/mdbx.dat" -/* The suffix of the lock file when no subdir is used */ -#define MDBX_LOCK_SUFFIX "-lck" - -/* Opaque structure for a database environment. - * - * A DB environment supports multiple databases, all residing in the same - * shared-memory map. */ -typedef struct MDBX_env MDBX_env; - -/* Opaque structure for a transaction handle. - * - * All database operations require a transaction handle. Transactions may be - * read-only or read-write. */ -typedef struct MDBX_txn MDBX_txn; - -/* A handle for an individual database in the DB environment. */ -typedef uint32_t MDBX_dbi; - -/* Opaque structure for navigating through a database */ -typedef struct MDBX_cursor MDBX_cursor; - -/* Generic structure used for passing keys and data in and out - * of the database. - * - * Values returned from the database are valid only until a subsequent - * update operation, or the end of the transaction. Do not modify or - * free them, they commonly point into the database itself. - * - * Key sizes must be between 1 and mdbx_env_get_maxkeysize() inclusive. - * The same applies to data sizes in databases with the MDBX_DUPSORT flag. - * Other data items can in theory be from 0 to 0xffffffff bytes long. */ -#ifndef HAVE_STRUCT_IOVEC -struct iovec { - void *iov_base; - size_t iov_len; -}; -#define HAVE_STRUCT_IOVEC -#endif /* HAVE_STRUCT_IOVEC */ - -typedef struct iovec MDBX_val; - -/* The maximum size of a data item. - * MDBX only store a 32 bit value for node sizes. */ -#define MDBX_MAXDATASIZE INT32_MAX - -/* A callback function used to compare two keys in a database */ -typedef int(MDBX_cmp_func)(const MDBX_val *a, const MDBX_val *b); - -/* Environment Flags */ -/* no environment directory */ -#define MDBX_NOSUBDIR 0x4000u -/* don't fsync after commit */ -#define MDBX_NOSYNC 0x10000u -/* read only */ -#define MDBX_RDONLY 0x20000u -/* don't fsync metapage after commit */ -#define MDBX_NOMETASYNC 0x40000u -/* use writable mmap */ -#define MDBX_WRITEMAP 0x80000u -/* use asynchronous msync when MDBX_WRITEMAP is used */ -#define MDBX_MAPASYNC 0x100000u -/* tie reader locktable slots to MDBX_txn objects instead of to threads */ -#define MDBX_NOTLS 0x200000u -/* open DB in exclusive/monopolistic mode. */ -#define MDBX_EXCLUSIVE 0x400000u -/* don't do readahead */ -#define MDBX_NORDAHEAD 0x800000u -/* don't initialize malloc'd memory before writing to datafile */ -#define MDBX_NOMEMINIT 0x1000000u -/* aim to coalesce FreeDB records */ -#define MDBX_COALESCE 0x2000000u -/* LIFO policy for reclaiming FreeDB records */ -#define MDBX_LIFORECLAIM 0x4000000u -/* make a steady-sync only on close and explicit env-sync */ -#define MDBX_UTTERLY_NOSYNC (MDBX_NOSYNC | MDBX_MAPASYNC) -/* debuging option, fill/perturb released pages */ -#define MDBX_PAGEPERTURB 0x8000000u - -/* Database Flags */ -/* use reverse string keys */ -#define MDBX_REVERSEKEY 0x02u -/* use sorted duplicates */ -#define MDBX_DUPSORT 0x04u -/* numeric keys in native byte order, either uint32_t or uint64_t. - * The keys must all be of the same size. */ -#define MDBX_INTEGERKEY 0x08u -/* with MDBX_DUPSORT, sorted dup items have fixed size */ -#define MDBX_DUPFIXED 0x10u -/* with MDBX_DUPSORT, dups are MDBX_INTEGERKEY-style integers */ -#define MDBX_INTEGERDUP 0x20u -/* with MDBX_DUPSORT, use reverse string dups */ -#define MDBX_REVERSEDUP 0x40u -/* create DB if not already existing */ -#define MDBX_CREATE 0x40000u - -/* Write Flags */ -/* For put: Don't write if the key already exists. */ -#define MDBX_NOOVERWRITE 0x10u -/* Only for MDBX_DUPSORT - * For put: don't write if the key and data pair already exist. - * For mdbx_cursor_del: remove all duplicate data items. */ -#define MDBX_NODUPDATA 0x20u -/* For mdbx_cursor_put: overwrite the current key/data pair - * MDBX allows this flag for mdbx_put() for explicit overwrite/update without - * insertion. */ -#define MDBX_CURRENT 0x40u -/* For put: Just reserve space for data, don't copy it. Return a - * pointer to the reserved space. */ -#define MDBX_RESERVE 0x10000u -/* Data is being appended, don't split full pages. */ -#define MDBX_APPEND 0x20000u -/* Duplicate data is being appended, don't split full pages. */ -#define MDBX_APPENDDUP 0x40000u -/* Store multiple data items in one call. Only for MDBX_DUPFIXED. */ -#define MDBX_MULTIPLE 0x80000u - -/* Transaction Flags */ -/* Do not block when starting a write transaction */ -#define MDBX_TRYTXN 0x10000000u - -/* Copy Flags */ -/* Compacting copy: Omit free space from copy, and renumber all - * pages sequentially. */ -#define MDBX_CP_COMPACT 1u - -/* Cursor Get operations. - * - * This is the set of all operations for retrieving data - * using a cursor. */ -typedef enum MDBX_cursor_op { - MDBX_FIRST, /* Position at first key/data item */ - MDBX_FIRST_DUP, /* MDBX_DUPSORT-only: Position at first data item - * of current key. */ - MDBX_GET_BOTH, /* MDBX_DUPSORT-only: Position at key/data pair. */ - MDBX_GET_BOTH_RANGE, /* MDBX_DUPSORT-only: position at key, nearest data. */ - MDBX_GET_CURRENT, /* Return key/data at current cursor position */ - MDBX_GET_MULTIPLE, /* MDBX_DUPFIXED-only: Return key and up to a page of - * duplicate data items from current cursor position. - * Move cursor to prepare for MDBX_NEXT_MULTIPLE.*/ - MDBX_LAST, /* Position at last key/data item */ - MDBX_LAST_DUP, /* MDBX_DUPSORT-only: Position at last data item - * of current key. */ - MDBX_NEXT, /* Position at next data item */ - MDBX_NEXT_DUP, /* MDBX_DUPSORT-only: Position at next data item - * of current key. */ - MDBX_NEXT_MULTIPLE, /* MDBX_DUPFIXED-only: Return key and up to a page of - * duplicate data items from next cursor position. - * Move cursor to prepare for MDBX_NEXT_MULTIPLE. */ - MDBX_NEXT_NODUP, /* Position at first data item of next key */ - MDBX_PREV, /* Position at previous data item */ - MDBX_PREV_DUP, /* MDBX_DUPSORT-only: Position at previous data item - * of current key. */ - MDBX_PREV_NODUP, /* Position at last data item of previous key */ - MDBX_SET, /* Position at specified key */ - MDBX_SET_KEY, /* Position at specified key, return both key and data */ - MDBX_SET_RANGE, /* Position at first key greater than or equal to - * specified key. */ - MDBX_PREV_MULTIPLE /* MDBX_DUPFIXED-only: Position at previous page and - * return key and up to a page of duplicate data items. */ -} MDBX_cursor_op; - -/* Return Codes - * BerkeleyDB uses -30800 to -30999, we'll go under them */ - -/* Successful result */ -#define MDBX_SUCCESS 0 -#define MDBX_RESULT_FALSE MDBX_SUCCESS -#define MDBX_RESULT_TRUE (-1) - -/* key/data pair already exists */ -#define MDBX_KEYEXIST (-30799) -/* key/data pair not found (EOF) */ -#define MDBX_NOTFOUND (-30798) -/* Requested page not found - this usually indicates corruption */ -#define MDBX_PAGE_NOTFOUND (-30797) -/* Located page was wrong type */ -#define MDBX_CORRUPTED (-30796) -/* Update of meta page failed or environment had fatal error */ -#define MDBX_PANIC (-30795) -/* DB file version mismatch with libmdbx */ -#define MDBX_VERSION_MISMATCH (-30794) -/* File is not a valid MDBX file */ -#define MDBX_INVALID (-30793) -/* Environment mapsize reached */ -#define MDBX_MAP_FULL (-30792) -/* Environment maxdbs reached */ -#define MDBX_DBS_FULL (-30791) -/* Environment maxreaders reached */ -#define MDBX_READERS_FULL (-30790) -/* Txn has too many dirty pages */ -#define MDBX_TXN_FULL (-30788) -/* Cursor stack too deep - internal error */ -#define MDBX_CURSOR_FULL (-30787) -/* Page has not enough space - internal error */ -#define MDBX_PAGE_FULL (-30786) -/* Database contents grew beyond environment mapsize */ -#define MDBX_MAP_RESIZED (-30785) -/* Operation and DB incompatible, or DB type changed. This can mean: - * - The operation expects an MDBX_DUPSORT / MDBX_DUPFIXED database. - * - Opening a named DB when the unnamed DB has MDBX_DUPSORT/MDBX_INTEGERKEY. - * - Accessing a data record as a database, or vice versa. - * - The database was dropped and recreated with different flags. */ -#define MDBX_INCOMPATIBLE (-30784) -/* Invalid reuse of reader locktable slot */ -#define MDBX_BAD_RSLOT (-30783) -/* Transaction must abort, has a child, or is invalid */ -#define MDBX_BAD_TXN (-30782) -/* Unsupported size of key/DB name/data, or wrong DUPFIXED size */ -#define MDBX_BAD_VALSIZE (-30781) -/* The specified DBI was changed unexpectedly */ -#define MDBX_BAD_DBI (-30780) -/* Unexpected problem - txn should abort */ -#define MDBX_PROBLEM (-30779) -/* Another write transaction is running */ -#define MDBX_BUSY (-30778) -/* The last defined error code */ -#define MDBX_LAST_ERRCODE MDBX_BUSY - -/* The mdbx_put() or mdbx_replace() was called for key, - that has more that one associated value. */ -#define MDBX_EMULTIVAL (-30421) - -/* Bad signature of a runtime object(s), this can mean: - * - memory corruption or double-free; - * - ABI version mismatch (rare case); */ -#define MDBX_EBADSIGN (-30420) - -/* Database should be recovered, but this could NOT be done automatically - * right now (e.g. in readonly mode and so forth). */ -#define MDBX_WANNA_RECOVERY (-30419) - -/* The given key value is mismatched to the current cursor position, - * when mdbx_cursor_put() called with MDBX_CURRENT option. */ -#define MDBX_EKEYMISMATCH (-30418) - -/* Database is too large for current system, - * e.g. could NOT be mapped into RAM. */ -#define MDBX_TOO_LARGE (-30417) - -/* A thread has attempted to use a not owned object, - * e.g. a transaction that started by another thread. */ -#define MDBX_THREAD_MISMATCH (-30416) - -/* Statistics for a database in the environment */ -typedef struct MDBX_stat { - uint32_t ms_psize; /* Size of a database page. - * This is currently the same for all databases. */ - uint32_t ms_depth; /* Depth (height) of the B-tree */ - uint64_t ms_branch_pages; /* Number of internal (non-leaf) pages */ - uint64_t ms_leaf_pages; /* Number of leaf pages */ - uint64_t ms_overflow_pages; /* Number of overflow pages */ - uint64_t ms_entries; /* Number of data items */ -} MDBX_stat; - -/* Information about the environment */ -typedef struct MDBX_envinfo { - struct { - uint64_t lower; /* lower limit for datafile size */ - uint64_t upper; /* upper limit for datafile size */ - uint64_t current; /* current datafile size */ - uint64_t shrink; /* shrink theshold for datafile */ - uint64_t grow; /* growth step for datafile */ - } mi_geo; - uint64_t mi_mapsize; /* Size of the data memory map */ - uint64_t mi_last_pgno; /* ID of the last used page */ - uint64_t mi_recent_txnid; /* ID of the last committed transaction */ - uint64_t mi_latter_reader_txnid; /* ID of the last reader transaction */ - uint64_t mi_self_latter_reader_txnid; /* ID of the last reader transaction of - caller process */ - uint64_t mi_meta0_txnid, mi_meta0_sign; - uint64_t mi_meta1_txnid, mi_meta1_sign; - uint64_t mi_meta2_txnid, mi_meta2_sign; - uint32_t mi_maxreaders; /* max reader slots in the environment */ - uint32_t mi_numreaders; /* max reader slots used in the environment */ - uint32_t mi_dxb_pagesize; /* database pagesize */ - uint32_t mi_sys_pagesize; /* system pagesize */ -} MDBX_envinfo; - -/* Return a string describing a given error code. - * - * This function is a superset of the ANSI C X3.159-1989 (ANSI C) strerror(3) - * function. If the error code is greater than or equal to 0, then the string - * returned by the system function strerror(3) is returned. If the error code - * is less than 0, an error string corresponding to the MDBX library error is - * returned. See errors for a list of MDBX-specific error codes. - * - * [in] err The error code - * - * Returns "error message" The description of the error */ -LIBMDBX_API const char *mdbx_strerror(int errnum); -LIBMDBX_API const char *mdbx_strerror_r(int errnum, char *buf, size_t buflen); - -/* Create an MDBX environment handle. - * - * This function allocates memory for a MDBX_env structure. To release - * the allocated memory and discard the handle, call mdbx_env_close(). - * Before the handle may be used, it must be opened using mdbx_env_open(). - * Various other options may also need to be set before opening the handle, - * e.g. mdbx_env_set_mapsize(), mdbx_env_set_maxreaders(), - * mdbx_env_set_maxdbs(), depending on usage requirements. - * - * [out] env The address where the new handle will be stored - * - * Returns A non-zero error value on failure and 0 on success. */ -LIBMDBX_API int mdbx_env_create(MDBX_env **penv); - -/* Open an environment handle. - * - * If this function fails, mdbx_env_close() must be called to discard - * the MDBX_env handle. - * - * [in] env An environment handle returned by mdbx_env_create() - * [in] path The directory in which the database files reside. - * This directory must already exist and be writable. - * [in] flags Special options for this environment. This parameter - * must be set to 0 or by bitwise OR'ing together one - * or more of the values described here. - * - * Flags set by mdbx_env_set_flags() are also used: - * - MDBX_NOSUBDIR - * By default, MDBX creates its environment in a directory whose - * pathname is given in path, and creates its data and lock files - * under that directory. With this option, path is used as-is for - * the database main data file. The database lock file is the path - * with "-lock" appended. - * - * - MDBX_RDONLY - * Open the environment in read-only mode. No write operations will - * be allowed. MDBX will still modify the lock file - except on - * read-only filesystems, where MDBX does not use locks. - * - * - MDBX_WRITEMAP - * Use a writeable memory map unless MDBX_RDONLY is set. This uses fewer - * mallocs but loses protection from application bugs like wild pointer - * writes and other bad updates into the database. - * This may be slightly faster for DBs that fit entirely in RAM, - * but is slower for DBs larger than RAM. - * Incompatible with nested transactions. - * Do not mix processes with and without MDBX_WRITEMAP on the same - * environment. This can defeat durability (mdbx_env_sync etc). - * - * - MDBX_NOMETASYNC - * Flush system buffers to disk only once per transaction, omit the - * metadata flush. Defer that until the system flushes files to disk, - * or next non-MDBX_RDONLY commit or mdbx_env_sync(). This optimization - * maintains database integrity, but a system crash may undo the last - * committed transaction. I.e. it preserves the ACI (atomicity, - * consistency, isolation) but not D (durability) database property. - * This flag may be changed at any time using mdbx_env_set_flags(). - * - * - MDBX_NOSYNC - * Don't flush system buffers to disk when committing a transaction. - * This optimization means a system crash can corrupt the database or - * lose the last transactions if buffers are not yet flushed to disk. - * The risk is governed by how often the system flushes dirty buffers - * to disk and how often mdbx_env_sync() is called. However, if the - * filesystem preserves write order and the MDBX_WRITEMAP and/or - * MDBX_LIFORECLAIM flags are not used, transactions exhibit ACI - * (atomicity, consistency, isolation) properties and only lose D - * (durability). I.e. database integrity is maintained, but a system - * crash may undo the final transactions. - * - * Note that (MDBX_NOSYNC | MDBX_WRITEMAP) leaves the system with no - * hint for when to write transactions to disk. - * Therefore the (MDBX_MAPASYNC | MDBX_WRITEMAP) may be preferable. - * This flag may be changed at any time using mdbx_env_set_flags(). - * - * - MDBX_UTTERLY_NOSYNC (internally MDBX_NOSYNC | MDBX_MAPASYNC) - * FIXME: TODO - * - * - MDBX_MAPASYNC - * When using MDBX_WRITEMAP, use asynchronous flushes to disk. As with - * MDBX_NOSYNC, a system crash can then corrupt the database or lose - * the last transactions. Calling mdbx_env_sync() ensures on-disk - * database integrity until next commit. This flag may be changed at - * any time using mdbx_env_set_flags(). - * - * - MDBX_NOTLS - * Don't use Thread-Local Storage. Tie reader locktable slots to - * MDBX_txn objects instead of to threads. I.e. mdbx_txn_reset() keeps - * the slot reseved for the MDBX_txn object. A thread may use parallel - * read-only transactions. A read-only transaction may span threads if - * the user synchronizes its use. Applications that multiplex many - * user threads over individual OS threads need this option. Such an - * application must also serialize the write transactions in an OS - * thread, since MDBX's write locking is unaware of the user threads. - * - * - MDBX_NOLOCK (don't supported by MDBX) - * Don't do any locking. If concurrent access is anticipated, the - * caller must manage all concurrency itself. For proper operation - * the caller must enforce single-writer semantics, and must ensure - * that no readers are using old transactions while a writer is - * active. The simplest approach is to use an exclusive lock so that - * no readers may be active at all when a writer begins. - * - * - MDBX_NORDAHEAD - * Turn off readahead. Most operating systems perform readahead on - * read requests by default. This option turns it off if the OS - * supports it. Turning it off may help random read performance - * when the DB is larger than RAM and system RAM is full. - * - * - MDBX_NOMEMINIT - * Don't initialize malloc'd memory before writing to unused spaces - * in the data file. By default, memory for pages written to the data - * file is obtained using malloc. While these pages may be reused in - * subsequent transactions, freshly malloc'd pages will be initialized - * to zeroes before use. This avoids persisting leftover data from other - * code (that used the heap and subsequently freed the memory) into the - * data file. Note that many other system libraries may allocate and free - * memory from the heap for arbitrary uses. E.g., stdio may use the heap - * for file I/O buffers. This initialization step has a modest performance - * cost so some applications may want to disable it using this flag. This - * option can be a problem for applications which handle sensitive data - * like passwords, and it makes memory checkers like Valgrind noisy. This - * flag is not needed with MDBX_WRITEMAP, which writes directly to the - * mmap instead of using malloc for pages. The initialization is also - * skipped if MDBX_RESERVE is used; the caller is expected to overwrite - * all of the memory that was reserved in that case. This flag may be - * changed at any time using mdbx_env_set_flags(). - * - * - MDBX_COALESCE - * Aim to coalesce records while reclaiming FreeDB. This flag may be - * changed at any time using mdbx_env_set_flags(). - * FIXME: TODO - * - * - MDBX_LIFORECLAIM - * LIFO policy for reclaiming FreeDB records. This significantly reduce - * write IPOs in case MDBX_NOSYNC with periodically checkpoints. - * FIXME: TODO - * - * [in] mode The UNIX permissions to set on created files. - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_VERSION_MISMATCH - the version of the MDBX library doesn't match the - * version that created the database environment. - * - MDBX_INVALID - the environment file headers are corrupted. - * - MDBX_ENOENT - the directory specified by the path parameter - * doesn't exist. - * - MDBX_EACCES - the user didn't have permission to access - * the environment files. - * - MDBX_EAGAIN - the environment was locked by another process. */ -LIBMDBX_API int mdbx_env_open(MDBX_env *env, const char *path, unsigned flags, - mode_t mode); - -/* Copy an MDBX environment to the specified path, with options. - * - * This function may be used to make a backup of an existing environment. - * No lockfile is created, since it gets recreated at need. - * NOTE: This call can trigger significant file size growth if run in - * parallel with write transactions, because it employs a read-only - * transaction. See long-lived transactions under "Caveats" section. - * - * [in] env An environment handle returned by mdbx_env_create(). It must - * have already been opened successfully. - * [in] path The directory in which the copy will reside. This directory - * must already exist and be writable but must otherwise be empty. - * [in] flags Special options for this operation. This parameter must be set - * to 0 or by bitwise OR'ing together one or more of the values - * described here: - * - * - MDBX_CP_COMPACT - * Perform compaction while copying: omit free pages and sequentially - * renumber all pages in output. This option consumes little bit more - * CPU for processing, but may running quickly than the default, on - * account skipping free pages. - * - * NOTE: Currently it fails if the environment has suffered a page leak. - * - * Returns A non-zero error value on failure and 0 on success. */ -LIBMDBX_API int mdbx_env_copy(MDBX_env *env, const char *dest_path, - unsigned flags); - -/* Copy an MDBX environment to the specified file descriptor, - * with options. - * - * This function may be used to make a backup of an existing environment. - * No lockfile is created, since it gets recreated at need. See - * mdbx_env_copy() for further details. - * - * NOTE: This call can trigger significant file size growth if run in - * parallel with write transactions, because it employs a read-only - * transaction. See long-lived transactions under "Caveats" section. - * - * [in] env An environment handle returned by mdbx_env_create(). It must - * have already been opened successfully. - * [in] fd The filedescriptor to write the copy to. It must have already - * been opened for Write access. - * [in] flags Special options for this operation. See mdbx_env_copy() for - * options. - * - * Returns A non-zero error value on failure and 0 on success. */ -LIBMDBX_API int mdbx_env_copy2fd(MDBX_env *env, mdbx_filehandle_t fd, - unsigned flags); - -/* Return statistics about the MDBX environment. - * - * [in] env An environment handle returned by mdbx_env_create() - * [out] stat The address of an MDBX_stat structure where the statistics - * will be copied */ -LIBMDBX_API int mdbx_env_stat(MDBX_env *env, MDBX_stat *stat, size_t bytes); - -/* Return information about the MDBX environment. - * - * [in] env An environment handle returned by mdbx_env_create() - * [out] stat The address of an MDBX_envinfo structure - * where the information will be copied */ -LIBMDBX_API int mdbx_env_info(MDBX_env *env, MDBX_envinfo *info, size_t bytes); - -/* Flush the data buffers to disk. - * - * Data is always written to disk when mdbx_txn_commit() is called, - * but the operating system may keep it buffered. MDBX always flushes - * the OS buffers upon commit as well, unless the environment was - * opened with MDBX_NOSYNC or in part MDBX_NOMETASYNC. This call is - * not valid if the environment was opened with MDBX_RDONLY. - * - * [in] env An environment handle returned by mdbx_env_create() - * [in] force If non-zero, force a synchronous flush. Otherwise if the - * environment has the MDBX_NOSYNC flag set the flushes will be - * omitted, and with MDBX_MAPASYNC they will be asynchronous. - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_EACCES - the environment is read-only. - * - MDBX_EINVAL - an invalid parameter was specified. - * - MDBX_EIO - an error occurred during synchronization. */ -LIBMDBX_API int mdbx_env_sync(MDBX_env *env, int force); - -/* Close the environment and release the memory map. - * - * Only a single thread may call this function. All transactions, databases, - * and cursors must already be closed before calling this function. Attempts - * to use any such handles after calling this function will cause a SIGSEGV. - * The environment handle will be freed and must not be used again after this - * call. - * - * [in] env An environment handle returned by mdbx_env_create() - * [in] dont_sync A dont'sync flag, if non-zero the last checkpoint (meta-page - * update) will be kept "as is" and may be still "weak" in the - * NOSYNC/MAPASYNC modes. Such "weak" checkpoint will be - * ignored on opening next time, and transactions since the - * last non-weak checkpoint (meta-page update) will rolledback - * for consistency guarantee. */ -LIBMDBX_API int mdbx_env_close(MDBX_env *env); - -/* Set environment flags. - * - * This may be used to set some flags in addition to those from - * mdbx_env_open(), or to unset these flags. If several threads - * change the flags at the same time, the result is undefined. - * - * [in] env An environment handle returned by mdbx_env_create() - * [in] flags The flags to change, bitwise OR'ed together - * [in] onoff A non-zero value sets the flags, zero clears them. - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_EINVAL - an invalid parameter was specified. */ -LIBMDBX_API int mdbx_env_set_flags(MDBX_env *env, unsigned flags, int onoff); - -/* Get environment flags. - * - * [in] env An environment handle returned by mdbx_env_create() - * [out] flags The address of an integer to store the flags - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_EINVAL - an invalid parameter was specified. */ -LIBMDBX_API int mdbx_env_get_flags(MDBX_env *env, unsigned *flags); - -/* Return the path that was used in mdbx_env_open(). - * - * [in] env An environment handle returned by mdbx_env_create() - * [out] path Address of a string pointer to contain the path. - * This is the actual string in the environment, not a copy. - * It should not be altered in any way. - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_EINVAL - an invalid parameter was specified. */ -LIBMDBX_API int mdbx_env_get_path(MDBX_env *env, const char **path); - -/* Return the file descriptor for the given environment. - * - * NOTE: All MDBX file descriptors have FD_CLOEXEC and - * could't be used after exec() and or fork(). - * - * [in] env An environment handle returned by mdbx_env_create() - * [out] fd Address of a int to contain the descriptor. - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_EINVAL - an invalid parameter was specified. */ -LIBMDBX_API int mdbx_env_get_fd(MDBX_env *env, mdbx_filehandle_t *fd); - -/* Set the size of the memory map to use for this environment. - * - * The size should be a multiple of the OS page size. The default is - * 10485760 bytes. The size of the memory map is also the maximum size - * of the database. The value should be chosen as large as possible, - * to accommodate future growth of the database. - * This function should be called after mdbx_env_create() and before - * mdbx_env_open(). It may be called at later times if no transactions - * are active in this process. Note that the library does not check for - * this condition, the caller must ensure it explicitly. - * - * The new size takes effect immediately for the current process but - * will not be persisted to any others until a write transaction has been - * committed by the current process. Also, only mapsize increases are - * persisted into the environment. - * - * If the mapsize is increased by another process, and data has grown - * beyond the range of the current mapsize, mdbx_txn_begin() will - * return MDBX_MAP_RESIZED. This function may be called with a size - * of zero to adopt the new size. - * - * Any attempt to set a size smaller than the space already consumed by the - * environment will be silently changed to the current size of the used space. - * - * [in] env An environment handle returned by mdbx_env_create() - * [in] size The size in bytes - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_EINVAL - an invalid parameter was specified, - * or the environment has an active write transaction. */ -LIBMDBX_API int mdbx_env_set_mapsize(MDBX_env *env, size_t size); -LIBMDBX_API int mdbx_env_set_geometry(MDBX_env *env, intptr_t size_lower, - intptr_t size_now, intptr_t size_upper, - intptr_t growth_step, - intptr_t shrink_threshold, - intptr_t pagesize); - -/* Set the maximum number of threads/reader slots for the environment. - * - * This defines the number of slots in the lock table that is used to track - * readers in the the environment. The default is 61. - * Starting a read-only transaction normally ties a lock table slot to the - * current thread until the environment closes or the thread exits. If - * MDBX_NOTLS is in use, mdbx_txn_begin() instead ties the slot to the - * MDBX_txn object until it or the MDBX_env object is destroyed. - * This function may only be called after mdbx_env_create() and before - * mdbx_env_open(). - * - * [in] env An environment handle returned by mdbx_env_create() - * [in] readers The maximum number of reader lock table slots - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_EINVAL - an invalid parameter was specified, - * or the environment is already open. */ -LIBMDBX_API int mdbx_env_set_maxreaders(MDBX_env *env, unsigned readers); - -/* Get the maximum number of threads/reader slots for the environment. - * - * [in] env An environment handle returned by mdbx_env_create() - * [out] readers Address of an integer to store the number of readers - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_EINVAL - an invalid parameter was specified. */ -LIBMDBX_API int mdbx_env_get_maxreaders(MDBX_env *env, unsigned *readers); - -/* Set the maximum number of named databases for the environment. - * - * This function is only needed if multiple databases will be used in the - * environment. Simpler applications that use the environment as a single - * unnamed database can ignore this option. - * This function may only be called after mdbx_env_create() and before - * mdbx_env_open(). - * - * Currently a moderate number of slots are cheap but a huge number gets - * expensive: 7-120 words per transaction, and every mdbx_dbi_open() - * does a linear search of the opened slots. - * - * [in] env An environment handle returned by mdbx_env_create() - * [in] dbs The maximum number of databases - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_EINVAL - an invalid parameter was specified, - * or the environment is already open. */ -LIBMDBX_API int mdbx_env_set_maxdbs(MDBX_env *env, MDBX_dbi dbs); - -/* Get the maximum size of keys and MDBX_DUPSORT data we can write. - * - * [in] env An environment handle returned by mdbx_env_create() - * - * Returns The maximum size of a key we can write. */ -LIBMDBX_API int mdbx_env_get_maxkeysize(MDBX_env *env); -LIBMDBX_API int mdbx_get_maxkeysize(size_t pagesize); - -/* Set application information associated with the MDBX_env. - * - * [in] env An environment handle returned by mdbx_env_create() - * [in] ctx An arbitrary pointer for whatever the application needs. - * - * Returns A non-zero error value on failure and 0 on success. */ -LIBMDBX_API int mdbx_env_set_userctx(MDBX_env *env, void *ctx); - -/* Get the application information associated with the MDBX_env. - * - * [in] env An environment handle returned by mdbx_env_create() - * Returns The pointer set by mdbx_env_set_userctx(). */ -LIBMDBX_API void *mdbx_env_get_userctx(MDBX_env *env); - -/* A callback function for most MDBX assert() failures, - * called before printing the message and aborting. - * - * [in] env An environment handle returned by mdbx_env_create(). - * [in] msg The assertion message, not including newline. */ -typedef void MDBX_assert_func(const MDBX_env *env, const char *msg, - const char *function, unsigned line); - -/* Set or reset the assert() callback of the environment. - * - * Disabled if libmdbx is buillt with MDBX_DEBUG=0. - * NOTE: This hack should become obsolete as mdbx's error handling matures. - * - * [in] env An environment handle returned by mdbx_env_create(). - * [in] func An MDBX_assert_func function, or 0. - * - * Returns A non-zero error value on failure and 0 on success. */ -LIBMDBX_API int mdbx_env_set_assert(MDBX_env *env, MDBX_assert_func *func); - -/* Create a transaction for use with the environment. - * - * The transaction handle may be discarded using mdbx_txn_abort() - * or mdbx_txn_commit(). - * NOTE: A transaction and its cursors must only be used by a single - * thread, and a thread may only have a single transaction at a time. - * If MDBX_NOTLS is in use, this does not apply to read-only transactions. - * NOTE: Cursors may not span transactions. - * - * [in] env An environment handle returned by mdbx_env_create() - * [in] parent If this parameter is non-NULL, the new transaction will be - * a nested transaction, with the transaction indicated by parent - * as its parent. Transactions may be nested to any level. - * A parent transaction and its cursors may not issue any other - * operations than mdbx_txn_commit and mdbx_txn_abort while it - * has active child transactions. - * [in] flags Special options for this transaction. This parameter - * must be set to 0 or by bitwise OR'ing together one or more - * of the values described here. - * - * - MDBX_RDONLY - * This transaction will not perform any write operations. - * - * - MDBX_TRYTXN - * Do not block when starting a write transaction - * - * [out] txn Address where the new MDBX_txn handle will be stored - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_PANIC - a fatal error occurred earlier and the environment - * must be shut down. - * - MDBX_MAP_RESIZED - another process wrote data beyond this MDBX_env's - * mapsize and this environment's map must be resized - * as well. See mdbx_env_set_mapsize(). - * - MDBX_READERS_FULL - a read-only transaction was requested and the reader - * lock table is full. See mdbx_env_set_maxreaders(). - * - MDBX_ENOMEM - out of memory. - * - MDBX_BUSY - a write transaction is already started. */ -LIBMDBX_API int mdbx_txn_begin(MDBX_env *env, MDBX_txn *parent, unsigned flags, - MDBX_txn **txn); - -/* Returns the transaction's MDBX_env - * - * [in] txn A transaction handle returned by mdbx_txn_begin() */ -LIBMDBX_API MDBX_env *mdbx_txn_env(MDBX_txn *txn); - -/* Return the transaction's flags. - * - * This returns the flags associated with this transaction. - * - * [in] txn A transaction handle returned by mdbx_txn_begin() - * - * Returns A transaction flags, valid if input is an active transaction. */ -LIBMDBX_API int mdbx_txn_flags(MDBX_txn *txn); - -/* Return the transaction's ID. - * - * This returns the identifier associated with this transaction. For a - * read-only transaction, this corresponds to the snapshot being read; - * concurrent readers will frequently have the same transaction ID. - * - * [in] txn A transaction handle returned by mdbx_txn_begin() - * - * Returns A transaction ID, valid if input is an active transaction. */ -LIBMDBX_API uint64_t mdbx_txn_id(MDBX_txn *txn); - -/* Commit all the operations of a transaction into the database. - * - * The transaction handle is freed. It and its cursors must not be used - * again after this call, except with mdbx_cursor_renew(). - * - * A cursor must be closed explicitly always, before - * or after its transaction ends. It can be reused with - * mdbx_cursor_renew() before finally closing it. - * - * [in] txn A transaction handle returned by mdbx_txn_begin() - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_EINVAL - an invalid parameter was specified. - * - MDBX_ENOSPC - no more disk space. - * - MDBX_EIO - a low-level I/O error occurred while writing. - * - MDBX_ENOMEM - out of memory. */ -LIBMDBX_API int mdbx_txn_commit(MDBX_txn *txn); - -/* Abandon all the operations of the transaction instead of saving them. - * - * The transaction handle is freed. It and its cursors must not be used - * again after this call, except with mdbx_cursor_renew(). - * - * A cursor must be closed explicitly always, before or after its transaction - * ends. It can be reused with mdbx_cursor_renew() before finally closing it. - * - * [in] txn A transaction handle returned by mdbx_txn_begin(). */ -LIBMDBX_API int mdbx_txn_abort(MDBX_txn *txn); - -/* Reset a read-only transaction. - * - * Abort the transaction like mdbx_txn_abort(), but keep the transaction - * handle. Therefore mdbx_txn_renew() may reuse the handle. This saves - * allocation overhead if the process will start a new read-only transaction - * soon, and also locking overhead if MDBX_NOTLS is in use. The reader table - * lock is released, but the table slot stays tied to its thread or - * MDBX_txn. Use mdbx_txn_abort() to discard a reset handle, and to free - * its lock table slot if MDBX_NOTLS is in use. - * - * Cursors opened within the transaction must not be used - * again after this call, except with mdbx_cursor_renew(). - * - * Reader locks generally don't interfere with writers, but they keep old - * versions of database pages allocated. Thus they prevent the old pages - * from being reused when writers commit new data, and so under heavy load - * the database size may grow much more rapidly than otherwise. - * - * [in] txn A transaction handle returned by mdbx_txn_begin() */ -LIBMDBX_API int mdbx_txn_reset(MDBX_txn *txn); - -/* Renew a read-only transaction. - * - * This acquires a new reader lock for a transaction handle that had been - * released by mdbx_txn_reset(). It must be called before a reset transaction - * may be used again. - * - * [in] txn A transaction handle returned by mdbx_txn_begin() - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_PANIC - a fatal error occurred earlier and the environment - * must be shut down. - * - MDBX_EINVAL - an invalid parameter was specified. */ -LIBMDBX_API int mdbx_txn_renew(MDBX_txn *txn); - -/* Open a table in the environment. - * - * A table handle denotes the name and parameters of a table, independently - * of whether such a table exists. The table handle may be discarded by - * calling mdbx_dbi_close(). The old table handle is returned if the table - * was already open. The handle may only be closed once. - * - * The table handle will be private to the current transaction until - * the transaction is successfully committed. If the transaction is - * aborted the handle will be closed automatically. - * After a successful commit the handle will reside in the shared - * environment, and may be used by other transactions. - * - * This function must not be called from multiple concurrent - * transactions in the same process. A transaction that uses - * this function must finish (either commit or abort) before - * any other transaction in the process may use this function. - * - * To use named table (with name != NULL), mdbx_env_set_maxdbs() - * must be called before opening the environment. Table names are - * keys in the internal unnamed table, and may be read but not written. - * - * [in] txn transaction handle returned by mdbx_txn_begin() - * [in] name The name of the table to open. If only a single - * table is needed in the environment, this value may be NULL. - * [in] flags Special options for this table. This parameter must be set - * to 0 or by bitwise OR'ing together one or more of the values - * described here: - * - MDBX_REVERSEKEY - * Keys are strings to be compared in reverse order, from the end - * of the strings to the beginning. By default, Keys are treated as - * strings and compared from beginning to end. - * - MDBX_DUPSORT - * Duplicate keys may be used in the table. Or, from another point of - * view, keys may have multiple data items, stored in sorted order. By - * default keys must be unique and may have only a single data item. - * - MDBX_INTEGERKEY - * Keys are binary integers in native byte order, either uin32_t or - * uint64_t, and will be sorted as such. The keys must all be of the - * same size. - * - MDBX_DUPFIXED - * This flag may only be used in combination with MDBX_DUPSORT. This - * option tells the library that the data items for this database are - * all the same size, which allows further optimizations in storage and - * retrieval. When all data items are the same size, the MDBX_GET_MULTIPLE, - * MDBX_NEXT_MULTIPLE and MDBX_PREV_MULTIPLE cursor operations may be used - * to retrieve multiple items at once. - * - MDBX_INTEGERDUP - * This option specifies that duplicate data items are binary integers, - * similar to MDBX_INTEGERKEY keys. - * - MDBX_REVERSEDUP - * This option specifies that duplicate data items should be compared as - * strings in reverse order (the comparison is performed in the direction - * from the last byte to the first). - * - MDBX_CREATE - * Create the named database if it doesn't exist. This option is not - * allowed in a read-only transaction or a read-only environment. - * - * [out] dbi Address where the new MDBX_dbi handle will be stored - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_NOTFOUND - the specified database doesn't exist in the - * environment and MDBX_CREATE was not specified. - * - MDBX_DBS_FULL - too many databases have been opened. - * See mdbx_env_set_maxdbs(). */ -LIBMDBX_API int mdbx_dbi_open_ex(MDBX_txn *txn, const char *name, - unsigned flags, MDBX_dbi *dbi, - MDBX_cmp_func *keycmp, MDBX_cmp_func *datacmp); -LIBMDBX_API int mdbx_dbi_open(MDBX_txn *txn, const char *name, unsigned flags, - MDBX_dbi *dbi); - -/* Retrieve statistics for a database. - * - * [in] txn A transaction handle returned by mdbx_txn_begin() - * [in] dbi A database handle returned by mdbx_dbi_open() - * [out] stat The address of an MDBX_stat structure where the statistics - * will be copied - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_EINVAL - an invalid parameter was specified. */ -LIBMDBX_API int mdbx_dbi_stat(MDBX_txn *txn, MDBX_dbi dbi, MDBX_stat *stat, - size_t bytes); - -/* Retrieve the DB flags for a database handle. - * - * [in] txn A transaction handle returned by mdbx_txn_begin() - * [in] dbi A database handle returned by mdbx_dbi_open() - * [out] flags Address where the flags will be returned. - * [out] state Address where the state will be returned. - * - * Returns A non-zero error value on failure and 0 on success. */ -#define MDBX_TBL_DIRTY 0x01 /* DB was written in this txn */ -#define MDBX_TBL_STALE 0x02 /* Named-DB record is older than txnID */ -#define MDBX_TBL_FRESH 0x04 /* Named-DB handle opened in this txn */ -#define MDBX_TBL_CREAT 0x08 /* Named-DB handle created in this txn */ -LIBMDBX_API int mdbx_dbi_flags_ex(MDBX_txn *txn, MDBX_dbi dbi, unsigned *flags, - unsigned *state); -LIBMDBX_API int mdbx_dbi_flags(MDBX_txn *txn, MDBX_dbi dbi, unsigned *flags); - -/* Close a database handle. Normally unnecessary. - * - * Use with care: - * FIXME: This call is not mutex protected. Handles should only be closed by - * a single thread, and only if no other threads are going to reference - * the database handle or one of its cursors any further. Do not close - * a handle if an existing transaction has modified its database. - * Doing so can cause misbehavior from database corruption to errors - * like MDBX_BAD_VALSIZE (since the DB name is gone). - * - * Closing a database handle is not necessary, but lets mdbx_dbi_open() - * reuse the handle value. Usually it's better to set a bigger - * mdbx_env_set_maxdbs(), unless that value would be large. - * - * [in] env An environment handle returned by mdbx_env_create() - * [in] dbi A database handle returned by mdbx_dbi_open() - */ -LIBMDBX_API int mdbx_dbi_close(MDBX_env *env, MDBX_dbi dbi); - -/* Empty or delete+close a database. - * - * See mdbx_dbi_close() for restrictions about closing the DB handle. - * - * [in] txn A transaction handle returned by mdbx_txn_begin() - * [in] dbi A database handle returned by mdbx_dbi_open() - * [in] del 0 to empty the DB, 1 to delete it from the environment - * and close the DB handle. - * - * Returns A non-zero error value on failure and 0 on success. */ -LIBMDBX_API int mdbx_drop(MDBX_txn *txn, MDBX_dbi dbi, int del); - -/* Get items from a database. - * - * This function retrieves key/data pairs from the database. The address - * and length of the data associated with the specified key are returned - * in the structure to which data refers. - * If the database supports duplicate keys (MDBX_DUPSORT) then the - * first data item for the key will be returned. Retrieval of other - * items requires the use of mdbx_cursor_get(). - * - * NOTE: The memory pointed to by the returned values is owned by the - * database. The caller need not dispose of the memory, and may not - * modify it in any way. For values returned in a read-only transaction - * any modification attempts will cause a SIGSEGV. - * - * NOTE: Values returned from the database are valid only until a - * subsequent update operation, or the end of the transaction. - * - * [in] txn A transaction handle returned by mdbx_txn_begin() - * [in] dbi A database handle returned by mdbx_dbi_open() - * [in] key The key to search for in the database - * [in,out] data The data corresponding to the key - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_NOTFOUND - the key was not in the database. - * - MDBX_EINVAL - an invalid parameter was specified. */ -LIBMDBX_API int mdbx_get(MDBX_txn *txn, MDBX_dbi dbi, MDBX_val *key, - MDBX_val *data); - -/* Store items into a database. - * - * This function stores key/data pairs in the database. The default behavior - * is to enter the new key/data pair, replacing any previously existing key - * if duplicates are disallowed, or adding a duplicate data item if - * duplicates are allowed (MDBX_DUPSORT). - * - * [in] txn A transaction handle returned by mdbx_txn_begin() - * [in] dbi A database handle returned by mdbx_dbi_open() - * [in] key The key to store in the database - * [in,out] data The data to store - * [in] flags Special options for this operation. This parameter must be - * set to 0 or by bitwise OR'ing together one or more of the - * values described here. - * - * - MDBX_NODUPDATA - * Enter the new key/data pair only if it does not already appear - * in the database. This flag may only be specified if the database - * was opened with MDBX_DUPSORT. The function will return MDBX_KEYEXIST - * if the key/data pair already appears in the database. - * - * - MDBX_NOOVERWRITE - * Enter the new key/data pair only if the key does not already appear - * in the database. The function will return MDBX_KEYEXIST if the key - * already appears in the database, even if the database supports - * duplicates (MDBX_DUPSORT). The data parameter will be set to point - * to the existing item. - * - * - MDBX_CURRENT - * Update an single existing entry, but not add new ones. The function - * will return MDBX_NOTFOUND if the given key not exist in the database. - * Or the MDBX_EMULTIVAL in case duplicates for the given key. - * - * - MDBX_RESERVE - * Reserve space for data of the given size, but don't copy the given - * data. Instead, return a pointer to the reserved space, which the - * caller can fill in later - before the next update operation or the - * transaction ends. This saves an extra memcpy if the data is being - * generated later. MDBX does nothing else with this memory, the caller - * is expected to modify all of the space requested. This flag must not - * be specified if the database was opened with MDBX_DUPSORT. - * - * - MDBX_APPEND - * Append the given key/data pair to the end of the database. This option - * allows fast bulk loading when keys are already known to be in the - * correct order. Loading unsorted keys with this flag will cause - * a MDBX_EKEYMISMATCH error. - * - * - MDBX_APPENDDUP - * As above, but for sorted dup data. - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_KEYEXIST - * - MDBX_MAP_FULL - the database is full, see mdbx_env_set_mapsize(). - * - MDBX_TXN_FULL - the transaction has too many dirty pages. - * - MDBX_EACCES - an attempt was made to write in a read-only transaction. - * - MDBX_EINVAL - an invalid parameter was specified. */ -LIBMDBX_API int mdbx_put(MDBX_txn *txn, MDBX_dbi dbi, MDBX_val *key, - MDBX_val *data, unsigned flags); - -/* Delete items from a database. - * - * This function removes key/data pairs from the database. - * - * The data parameter is NOT ignored regardless the database does - * support sorted duplicate data items or not. If the data parameter - * is non-NULL only the matching data item will be deleted. - * - * This function will return MDBX_NOTFOUND if the specified key/data - * pair is not in the database. - * - * [in] txn A transaction handle returned by mdbx_txn_begin() - * [in] dbi A database handle returned by mdbx_dbi_open() - * [in] key The key to delete from the database - * [in] data The data to delete - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_EACCES - an attempt was made to write in a read-only transaction. - * - MDBX_EINVAL - an invalid parameter was specified. */ -LIBMDBX_API int mdbx_del(MDBX_txn *txn, MDBX_dbi dbi, MDBX_val *key, - MDBX_val *data); - -/* Create a cursor handle. - * - * A cursor is associated with a specific transaction and database. - * A cursor cannot be used when its database handle is closed. Nor - * when its transaction has ended, except with mdbx_cursor_renew(). - * It can be discarded with mdbx_cursor_close(). - * - * A cursor must be closed explicitly always, before - * or after its transaction ends. It can be reused with - * mdbx_cursor_renew() before finally closing it. - * - * [in] txn A transaction handle returned by mdbx_txn_begin() - * [in] dbi A database handle returned by mdbx_dbi_open() - * [out] cursor Address where the new MDBX_cursor handle will be stored - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_EINVAL - an invalid parameter was specified. */ -LIBMDBX_API int mdbx_cursor_open(MDBX_txn *txn, MDBX_dbi dbi, - MDBX_cursor **cursor); - -/* Close a cursor handle. - * - * The cursor handle will be freed and must not be used again after this call. - * Its transaction must still be live if it is a write-transaction. - * - * [in] cursor A cursor handle returned by mdbx_cursor_open() */ -LIBMDBX_API void mdbx_cursor_close(MDBX_cursor *cursor); - -/* Renew a cursor handle. - * - * A cursor is associated with a specific transaction and database. - * Cursors that are only used in read-only transactions may be re-used, - * to avoid unnecessary malloc/free overhead. The cursor may be associated - * with a new read-only transaction, and referencing the same database handle - * as it was created with. - * - * This may be done whether the previous transaction is live or dead. - * [in] txn A transaction handle returned by mdbx_txn_begin() - * [in] cursor A cursor handle returned by mdbx_cursor_open() - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_EINVAL - an invalid parameter was specified. */ -LIBMDBX_API int mdbx_cursor_renew(MDBX_txn *txn, MDBX_cursor *cursor); - -/* Return the cursor's transaction handle. - * - * [in] cursor A cursor handle returned by mdbx_cursor_open() */ -LIBMDBX_API MDBX_txn *mdbx_cursor_txn(MDBX_cursor *cursor); - -/* Return the cursor's database handle. - * - * [in] cursor A cursor handle returned by mdbx_cursor_open() */ -LIBMDBX_API MDBX_dbi mdbx_cursor_dbi(MDBX_cursor *cursor); - -/* Retrieve by cursor. - * - * This function retrieves key/data pairs from the database. The address and - * length of the key are returned in the object to which key refers (except - * for the case of the MDBX_SET option, in which the key object is unchanged), - * and the address and length of the data are returned in the object to which - * data refers. See mdbx_get() for restrictions on using the output values. - * - * [in] cursor A cursor handle returned by mdbx_cursor_open() - * [in,out] key The key for a retrieved item - * [in,out] data The data of a retrieved item - * [in] op A cursor operation MDBX_cursor_op - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_NOTFOUND - no matching key found. - * - MDBX_EINVAL - an invalid parameter was specified. */ -LIBMDBX_API int mdbx_cursor_get(MDBX_cursor *cursor, MDBX_val *key, - MDBX_val *data, MDBX_cursor_op op); - -/* Store by cursor. - * - * This function stores key/data pairs into the database. The cursor is - * positioned at the new item, or on failure usually near it. - * - * [in] cursor A cursor handle returned by mdbx_cursor_open() - * [in] key The key operated on. - * [in] data The data operated on. - * [in] flags Options for this operation. This parameter - * must be set to 0 or one of the values described here: - * - * - MDBX_CURRENT - * Replace the item at the current cursor position. The key parameter - * must still be provided, and must match it, otherwise the function - * return MDBX_EKEYMISMATCH. - * - * NOTE: MDBX unlike LMDB allows you to change the size of the data and - * automatically handles reordering for sorted duplicates (MDBX_DUPSORT). - * - * - MDBX_NODUPDATA - * Enter the new key/data pair only if it does not already appear in the - * database. This flag may only be specified if the database was opened - * with MDBX_DUPSORT. The function will return MDBX_KEYEXIST if the - * key/data pair already appears in the database. - * - * - MDBX_NOOVERWRITE - * Enter the new key/data pair only if the key does not already appear - * in the database. The function will return MDBX_KEYEXIST if the key - * already appears in the database, even if the database supports - * duplicates (MDBX_DUPSORT). - * - * - MDBX_RESERVE - * Reserve space for data of the given size, but don't copy the given - * data. Instead, return a pointer to the reserved space, which the - * caller can fill in later - before the next update operation or the - * transaction ends. This saves an extra memcpy if the data is being - * generated later. This flag must not be specified if the database - * was opened with MDBX_DUPSORT. - * - * - MDBX_APPEND - * Append the given key/data pair to the end of the database. No key - * comparisons are performed. This option allows fast bulk loading when - * keys are already known to be in the correct order. Loading unsorted - * keys with this flag will cause a MDBX_KEYEXIST error. - * - * - MDBX_APPENDDUP - * As above, but for sorted dup data. - * - * - MDBX_MULTIPLE - * Store multiple contiguous data elements in a single request. This flag - * may only be specified if the database was opened with MDBX_DUPFIXED. - * The data argument must be an array of two MDBX_vals. The iov_len of the - * first MDBX_val must be the size of a single data element. The iov_base - * of the first MDBX_val must point to the beginning of the array of - * contiguous data elements. The iov_len of the second MDBX_val must be - * the count of the number of data elements to store. On return this - * field will be set to the count of the number of elements actually - * written. The iov_base of the second MDBX_val is unused. - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_EKEYMISMATCH - * - MDBX_MAP_FULL - the database is full, see mdbx_env_set_mapsize(). - * - MDBX_TXN_FULL - the transaction has too many dirty pages. - * - MDBX_EACCES - an attempt was made to write in a read-only transaction. - * - MDBX_EINVAL - an invalid parameter was specified. */ -LIBMDBX_API int mdbx_cursor_put(MDBX_cursor *cursor, MDBX_val *key, - MDBX_val *data, unsigned flags); - -/* Delete current key/data pair - * - * This function deletes the key/data pair to which the cursor refers. - * - * [in] cursor A cursor handle returned by mdbx_cursor_open() - * [in] flags Options for this operation. This parameter must be set to 0 - * or one of the values described here. - * - * - MDBX_NODUPDATA - * Delete all of the data items for the current key. This flag may only - * be specified if the database was opened with MDBX_DUPSORT. - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_EACCES - an attempt was made to write in a read-only transaction. - * - MDBX_EINVAL - an invalid parameter was specified. */ -LIBMDBX_API int mdbx_cursor_del(MDBX_cursor *cursor, unsigned flags); - -/* Return count of duplicates for current key. - * - * This call is only valid on databases that support sorted duplicate data - * items MDBX_DUPSORT. - * - * [in] cursor A cursor handle returned by mdbx_cursor_open() - * [out] countp Address where the count will be stored - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_EINVAL - cursor is not initialized, or an invalid parameter - * was specified. */ -LIBMDBX_API int mdbx_cursor_count(MDBX_cursor *cursor, size_t *countp); - -/* Compare two data items according to a particular database. - * - * This returns a comparison as if the two data items were keys in the - * specified database. - * - * [in] txn A transaction handle returned by mdbx_txn_begin() - * [in] dbi A database handle returned by mdbx_dbi_open() - * [in] a The first item to compare - * [in] b The second item to compare - * - * Returns < 0 if a < b, 0 if a == b, > 0 if a > b */ -LIBMDBX_API int mdbx_cmp(MDBX_txn *txn, MDBX_dbi dbi, const MDBX_val *a, - const MDBX_val *b); - -/* Compare two data items according to a particular database. - * - * This returns a comparison as if the two items were data items of - * the specified database. The database must have the MDBX_DUPSORT flag. - * - * [in] txn A transaction handle returned by mdbx_txn_begin() - * [in] dbi A database handle returned by mdbx_dbi_open() - * [in] a The first item to compare - * [in] b The second item to compare - * - * Returns < 0 if a < b, 0 if a == b, > 0 if a > b */ -LIBMDBX_API int mdbx_dcmp(MDBX_txn *txn, MDBX_dbi dbi, const MDBX_val *a, - const MDBX_val *b); - -/* A callback function used to print a message from the library. - * - * [in] msg The string to be printed. - * [in] ctx An arbitrary context pointer for the callback. - * - * Returns < 0 on failure, >= 0 on success. */ -typedef int(MDBX_msg_func)(const char *msg, void *ctx); - -/* Dump the entries in the reader lock table. - * - * [in] env An environment handle returned by mdbx_env_create() - * [in] func A MDBX_msg_func function - * [in] ctx Anything the message function needs - * - * Returns < 0 on failure, >= 0 on success. */ -LIBMDBX_API int mdbx_reader_list(MDBX_env *env, MDBX_msg_func *func, void *ctx); - -/* Check for stale entries in the reader lock table. - * - * [in] env An environment handle returned by mdbx_env_create() - * [out] dead Number of stale slots that were cleared - * - * Returns 0 on success, non-zero on failure. */ -LIBMDBX_API int mdbx_reader_check(MDBX_env *env, int *dead); - -LIBMDBX_API char *mdbx_dkey(const MDBX_val *key, char *const buf, - const size_t bufsize); - -LIBMDBX_API int mdbx_env_close_ex(MDBX_env *env, int dont_sync); - -/* Set threshold to force flush the data buffers to disk, - * even of MDBX_NOSYNC, MDBX_NOMETASYNC and MDBX_MAPASYNC flags - * in the environment. - * - * Data is always written to disk when mdbx_txn_commit() is called, - * but the operating system may keep it buffered. MDBX always flushes - * the OS buffers upon commit as well, unless the environment was - * opened with MDBX_NOSYNC or in part MDBX_NOMETASYNC. - * - * The default is 0, than mean no any threshold checked, and no additional - * flush will be made. - * - * [in] env An environment handle returned by mdbx_env_create() - * [in] bytes The size in bytes of summary changes when a synchronous - * flush would be made. - * - * Returns A non-zero error value on failure and 0 on success. */ -LIBMDBX_API int mdbx_env_set_syncbytes(MDBX_env *env, size_t bytes); - -/* Returns a lag of the reading for the given transaction. - * - * Returns an information for estimate how much given read-only - * transaction is lagging relative the to actual head. - * - * [in] txn A transaction handle returned by mdbx_txn_begin() - * [out] percent Percentage of page allocation in the database. - * - * Returns Number of transactions committed after the given was started for - * read, or -1 on failure. */ -LIBMDBX_API int mdbx_txn_straggler(MDBX_txn *txn, int *percent); - -/* A callback function for killing a laggard readers, - * but also could waiting ones. Called in case of MDBX_MAP_FULL error. - * - * [in] env An environment handle returned by mdbx_env_create(). - * [in] pid pid of the reader process. - * [in] tid thread_id of the reader thread. - * [in] txn Transaction number on which stalled. - * [in] gap A lag from the last commited txn. - * [in] retry A retry number, less that zero for notify end of OOM-loop. - * - * Returns -1 on failure (reader is not killed), - * 0 should wait or retry, - * 1 drop reader txn-lock (reading-txn was aborted), - * >1 drop reader registration (reader process was killed). */ -typedef int(MDBX_oom_func)(MDBX_env *env, int pid, mdbx_tid_t tid, uint64_t txn, - unsigned gap, int retry); - -/* Set the OOM callback. - * - * Callback will be called only on out-of-pages case for killing - * a laggard readers to allowing reclaiming of freeDB. - * - * [in] env An environment handle returned by mdbx_env_create(). - * [in] oomfunc A MDBX_oom_func function or NULL to disable. - * - * Returns A non-zero error value on failure and 0 on success. */ -LIBMDBX_API int mdbx_env_set_oomfunc(MDBX_env *env, MDBX_oom_func *oom_func); - -/* Get the current oom_func callback. - * - * Callback will be called only on out-of-pages case for killing - * a laggard readers to allowing reclaiming of freeDB. - * - * [in] env An environment handle returned by mdbx_env_create(). - * - * Returns A MDBX_oom_func function or NULL if disabled. */ -LIBMDBX_API MDBX_oom_func *mdbx_env_get_oomfunc(MDBX_env *env); - -#define MDBX_DBG_ASSERT 1 -#define MDBX_DBG_PRINT 2 -#define MDBX_DBG_TRACE 4 -#define MDBX_DBG_EXTRA 8 -#define MDBX_DBG_AUDIT 16 -#define MDBX_DBG_JITTER 32 -#define MDBX_DBG_DUMP 64 - -typedef void MDBX_debug_func(int type, const char *function, int line, - const char *msg, va_list args); - -LIBMDBX_API int mdbx_setup_debug(int flags, MDBX_debug_func *logger); - -typedef int MDBX_pgvisitor_func(uint64_t pgno, unsigned pgnumber, void *ctx, - const char *dbi, const char *type, - size_t nentries, size_t payload_bytes, - size_t header_bytes, size_t unused_bytes); -LIBMDBX_API int mdbx_env_pgwalk(MDBX_txn *txn, MDBX_pgvisitor_func *visitor, - void *ctx); - -typedef struct mdbx_canary { - uint64_t x, y, z, v; -} mdbx_canary; - -LIBMDBX_API int mdbx_canary_put(MDBX_txn *txn, const mdbx_canary *canary); -LIBMDBX_API int mdbx_canary_get(MDBX_txn *txn, mdbx_canary *canary); - -/* Returns: - * - MDBX_RESULT_TRUE - * when no more data available or cursor not positioned; - * - MDBX_RESULT_FALSE - * when data available; - * - Otherwise the error code. */ -LIBMDBX_API int mdbx_cursor_eof(MDBX_cursor *mc); - -/* Returns: MDBX_RESULT_TRUE, MDBX_RESULT_FALSE or Error code. */ -LIBMDBX_API int mdbx_cursor_on_first(MDBX_cursor *mc); - -/* Returns: MDBX_RESULT_TRUE, MDBX_RESULT_FALSE or Error code. */ -LIBMDBX_API int mdbx_cursor_on_last(MDBX_cursor *mc); - -LIBMDBX_API int mdbx_replace(MDBX_txn *txn, MDBX_dbi dbi, MDBX_val *key, - MDBX_val *new_data, MDBX_val *old_data, - unsigned flags); -/* Same as mdbx_get(), but: - * 1) if values_count is not NULL, then returns the count - * of multi-values/duplicates for a given key. - * 2) updates the key for pointing to the actual key's data inside DB. */ -LIBMDBX_API int mdbx_get_ex(MDBX_txn *txn, MDBX_dbi dbi, MDBX_val *key, - MDBX_val *data, size_t *values_count); - -LIBMDBX_API int mdbx_is_dirty(const MDBX_txn *txn, const void *ptr); - -LIBMDBX_API int mdbx_dbi_sequence(MDBX_txn *txn, MDBX_dbi dbi, uint64_t *result, - uint64_t increment); - -/*----------------------------------------------------------------------------*/ -/* attribute support functions for Nexenta */ -typedef uint_fast64_t mdbx_attr_t; - -/* Store by cursor with attribute. - * - * This function stores key/data pairs into the database. The cursor is - * positioned at the new item, or on failure usually near it. - * - * NOTE: Internally based on MDBX_RESERVE feature, - * therefore doesn't support MDBX_DUPSORT. - * - * [in] cursor A cursor handle returned by mdbx_cursor_open() - * [in] key The key operated on. - * [in] data The data operated on. - * [in] attr The attribute. - * [in] flags Options for this operation. This parameter must be set to 0 - * or one of the values described here: - * - * - MDBX_CURRENT - * Replace the item at the current cursor position. The key parameter - * must still be provided, and must match it, otherwise the function - * return MDBX_EKEYMISMATCH. - * - * - MDBX_APPEND - * Append the given key/data pair to the end of the database. No key - * comparisons are performed. This option allows fast bulk loading when - * keys are already known to be in the correct order. Loading unsorted - * keys with this flag will cause a MDBX_KEYEXIST error. - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_EKEYMISMATCH - * - MDBX_MAP_FULL - the database is full, see mdbx_env_set_mapsize(). - * - MDBX_TXN_FULL - the transaction has too many dirty pages. - * - MDBX_EACCES - an attempt was made to write in a read-only transaction. - * - MDBX_EINVAL - an invalid parameter was specified. */ -LIBMDBX_API int mdbx_cursor_put_attr(MDBX_cursor *cursor, MDBX_val *key, - MDBX_val *data, mdbx_attr_t attr, - unsigned flags); - -/* Store items and attributes into a database. - * - * This function stores key/data pairs in the database. The default behavior - * is to enter the new key/data pair, replacing any previously existing key - * if duplicates are disallowed. - * - * NOTE: Internally based on MDBX_RESERVE feature, - * therefore doesn't support MDBX_DUPSORT. - * - * [in] txn A transaction handle returned by mdbx_txn_begin(). - * [in] dbi A database handle returned by mdbx_dbi_open(). - * [in] key The key to store in the database. - * [in] attr The attribute to store in the database. - * [in,out] data The data to store. - * [in] flags Special options for this operation. This parameter must be - * set to 0 or by bitwise OR'ing together one or more of the - * values described here: - * - * - MDBX_NOOVERWRITE - * Enter the new key/data pair only if the key does not already appear - * in the database. The function will return MDBX_KEYEXIST if the key - * already appears in the database. The data parameter will be set to - * point to the existing item. - * - * - MDBX_CURRENT - * Update an single existing entry, but not add new ones. The function - * will return MDBX_NOTFOUND if the given key not exist in the database. - * Or the MDBX_EMULTIVAL in case duplicates for the given key. - * - * - MDBX_APPEND - * Append the given key/data pair to the end of the database. This option - * allows fast bulk loading when keys are already known to be in the - * correct order. Loading unsorted keys with this flag will cause - * a MDBX_EKEYMISMATCH error. - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_KEYEXIST - * - MDBX_MAP_FULL - the database is full, see mdbx_env_set_mapsize(). - * - MDBX_TXN_FULL - the transaction has too many dirty pages. - * - MDBX_EACCES - an attempt was made to write in a read-only transaction. - * - MDBX_EINVAL - an invalid parameter was specified. */ -LIBMDBX_API int mdbx_put_attr(MDBX_txn *txn, MDBX_dbi dbi, MDBX_val *key, - MDBX_val *data, mdbx_attr_t attr, unsigned flags); - -/* Set items attribute from a database. - * - * This function stores key/data pairs attribute to the database. - * - * NOTE: Internally based on MDBX_RESERVE feature, - * therefore doesn't support MDBX_DUPSORT. - * - * [in] txn A transaction handle returned by mdbx_txn_begin(). - * [in] dbi A database handle returned by mdbx_dbi_open(). - * [in] key The key to search for in the database. - * [in] data The data to be stored or NULL to save previous value. - * [in] attr The attribute to be stored. - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_NOTFOUND - the key-value pair was not in the database. - * - MDBX_EINVAL - an invalid parameter was specified. */ -LIBMDBX_API int mdbx_set_attr(MDBX_txn *txn, MDBX_dbi dbi, MDBX_val *key, - MDBX_val *data, mdbx_attr_t attr); - -/* Get items attribute from a database cursor. - * - * This function retrieves key/data pairs from the database. The address and - * length of the key are returned in the object to which key refers (except - * for the case of the MDBX_SET option, in which the key object is unchanged), - * and the address and length of the data are returned in the object to which - * data refers. See mdbx_get() for restrictions on using the output values. - * - * [in] cursor A cursor handle returned by mdbx_cursor_open() - * [in,out] key The key for a retrieved item - * [in,out] data The data of a retrieved item - * [in] op A cursor operation MDBX_cursor_op - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_NOTFOUND - no matching key found. - * - MDBX_EINVAL - an invalid parameter was specified. */ -LIBMDBX_API int mdbx_cursor_get_attr(MDBX_cursor *mc, MDBX_val *key, - MDBX_val *data, mdbx_attr_t *attrptr, - MDBX_cursor_op op); - -/* Get items attribute from a database. - * - * This function retrieves key/data pairs from the database. The address - * and length of the data associated with the specified key are returned - * in the structure to which data refers. - * If the database supports duplicate keys (MDBX_DUPSORT) then the - * first data item for the key will be returned. Retrieval of other - * items requires the use of mdbx_cursor_get(). - * - * NOTE: The memory pointed to by the returned values is owned by the - * database. The caller need not dispose of the memory, and may not - * modify it in any way. For values returned in a read-only transaction - * any modification attempts will cause a SIGSEGV. - * - * NOTE: Values returned from the database are valid only until a - * subsequent update operation, or the end of the transaction. - * - * [in] txn A transaction handle returned by mdbx_txn_begin() - * [in] dbi A database handle returned by mdbx_dbi_open() - * [in] key The key to search for in the database - * [in,out] data The data corresponding to the key - * - * Returns A non-zero error value on failure and 0 on success, some - * possible errors are: - * - MDBX_NOTFOUND - the key was not in the database. - * - MDBX_EINVAL - an invalid parameter was specified. */ -LIBMDBX_API int mdbx_get_attr(MDBX_txn *txn, MDBX_dbi dbi, MDBX_val *key, - MDBX_val *data, mdbx_attr_t *attrptr); - -/*----------------------------------------------------------------------------*/ -/* LY: temporary workaround for Elbrus's memcmp() bug. */ -#ifndef __GLIBC_PREREQ -#if defined(__GLIBC__) && defined(__GLIBC_MINOR__) -#define __GLIBC_PREREQ(maj, min) \ - ((__GLIBC__ << 16) + __GLIBC_MINOR__ >= ((maj) << 16) + (min)) -#else -#define __GLIBC_PREREQ(maj, min) (0) -#endif -#endif /* __GLIBC_PREREQ */ -#if defined(__e2k__) && !__GLIBC_PREREQ(2, 24) -LIBMDBX_API int mdbx_e2k_memcmp_bug_workaround(const void *s1, const void *s2, - size_t n); -LIBMDBX_API int mdbx_e2k_strcmp_bug_workaround(const char *s1, const char *s2); -LIBMDBX_API int mdbx_e2k_strncmp_bug_workaround(const char *s1, const char *s2, - size_t n); -LIBMDBX_API size_t mdbx_e2k_strlen_bug_workaround(const char *s); -LIBMDBX_API size_t mdbx_e2k_strnlen_bug_workaround(const char *s, - size_t maxlen); -#include <string.h> -#include <strings.h> -#undef memcmp -#define memcmp mdbx_e2k_memcmp_bug_workaround -#undef bcmp -#define bcmp mdbx_e2k_memcmp_bug_workaround -#undef strcmp -#define strcmp mdbx_e2k_strcmp_bug_workaround -#undef strncmp -#define strncmp mdbx_e2k_strncmp_bug_workaround -#undef strlen -#define strlen mdbx_e2k_strlen_bug_workaround -#undef strnlen -#define strnlen mdbx_e2k_strnlen_bug_workaround - -#endif /* Elbrus's memcmp() bug. */ - -#ifdef __cplusplus -} -#endif - -#endif /* LIBMDBX_H */ diff --git a/plugins/Dbx_mdbx/src/libmdbx/package.sh b/plugins/Dbx_mdbx/src/libmdbx/package.sh deleted file mode 100644 index d7f9ab297a..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/package.sh +++ /dev/null @@ -1,25 +0,0 @@ -#!/bin/bash -set -e - -CONFIG=$1 - -if [[ -z "${CONFIG}" ]]; then - CONFIG=Debug -fi - -DIRNAME=`dirname ${BASH_SOURCE[0]}` -DIRNAME=`readlink --canonicalize ${DIRNAME}` - -if [[ -r /opt/rh/devtoolset-6/enable ]]; then - source /opt/rh/devtoolset-6/enable -fi - -mkdir -p cmake-build-${CONFIG} -pushd cmake-build-${CONFIG} &> /dev/null -if [[ ! -r Makefile ]]; then - cmake .. -DCMAKE_BUILD_TYPE=${CONFIG} -fi -rm -f *.rpm -make -j8 package || exit 1 -rm -f *-Unspecified.rpm -popd &> /dev/null diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/bits.h b/plugins/Dbx_mdbx/src/libmdbx/src/bits.h deleted file mode 100644 index 955a583264..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/bits.h +++ /dev/null @@ -1,1272 +0,0 @@ -/* - * Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. */ - -#pragma once -/* *INDENT-OFF* */ -/* clang-format off */ - -#ifndef MDBX_DEBUG -# define MDBX_DEBUG 0 -#endif - -#if MDBX_DEBUG -# undef NDEBUG -#endif - -/*----------------------------------------------------------------------------*/ - -/* Should be defined before any includes */ -#ifndef _GNU_SOURCE -# define _GNU_SOURCE 1 -#endif -#ifndef _FILE_OFFSET_BITS -# define _FILE_OFFSET_BITS 64 -#endif - -#ifdef _MSC_VER -# if _MSC_VER < 1400 -# error "Microsoft Visual C++ 8.0 (Visual Studio 2005) or later version is required" -# endif -# ifndef _CRT_SECURE_NO_WARNINGS -# define _CRT_SECURE_NO_WARNINGS -# endif -#if _MSC_VER > 1800 -# pragma warning(disable : 4464) /* relative include path contains '..' */ -#endif -#if _MSC_VER > 1913 -# pragma warning(disable : 5045) /* Compiler will insert Spectre mitigation... */ -#endif -#pragma warning(disable : 4710) /* 'xyz': function not inlined */ -#pragma warning(disable : 4711) /* function 'xyz' selected for automatic inline expansion */ -#pragma warning(disable : 4201) /* nonstandard extension used : nameless struct / union */ -#pragma warning(disable : 4702) /* unreachable code */ -#pragma warning(disable : 4706) /* assignment within conditional expression */ -#pragma warning(disable : 4127) /* conditional expression is constant */ -#pragma warning(disable : 4324) /* 'xyz': structure was padded due to alignment specifier */ -#pragma warning(disable : 4310) /* cast truncates constant value */ -#pragma warning(disable : 4820) /* bytes padding added after data member for aligment */ -#pragma warning(disable : 4548) /* expression before comma has no effect; expected expression with side - effect */ -#pragma warning(disable : 4366) /* the result of the unary '&' operator may be unaligned */ -#endif /* _MSC_VER (warnings) */ - -#include "../mdbx.h" -#include "./defs.h" - -#if defined(__GNUC__) && !__GNUC_PREREQ(4,2) - /* Actualy libmdbx was not tested with compilers older than GCC from RHEL6. - * But you could remove this #error and try to continue at your own risk. - * In such case please don't rise up an issues related ONLY to old compilers. - */ -# warning "libmdbx required GCC >= 4.2" -#endif - -#if defined(__clang__) && !__CLANG_PREREQ(3,8) - /* Actualy libmdbx was not tested with CLANG older than 3.8. - * But you could remove this #error and try to continue at your own risk. - * In such case please don't rise up an issues related ONLY to old compilers. - */ -# warning "libmdbx required CLANG >= 3.8" -#endif - -#if defined(__GLIBC__) && !__GLIBC_PREREQ(2,12) - /* Actualy libmdbx was not tested with something older than glibc 2.12 (from RHEL6). - * But you could remove this #error and try to continue at your own risk. - * In such case please don't rise up an issues related ONLY to old systems. - */ -# warning "libmdbx required at least GLIBC 2.12." -#endif - -#ifdef __SANITIZE_THREAD__ -# warning "libmdbx don't compatible with ThreadSanitizer, you will get a lot of false-positive issues." -#endif /* __SANITIZE_THREAD__ */ - -#if __has_warning("-Wconstant-logical-operand") -# if defined(__clang__) -# pragma clang diagnostic ignored "-Wconstant-logical-operand" -# elif defined(__GNUC__) -# pragma GCC diagnostic ignored "-Wconstant-logical-operand" -# else -# pragma warning disable "constant-logical-operand" -# endif -#endif /* -Wconstant-logical-operand */ - -#if defined(__LCC__) && (__LCC__ <= 121) - /* bug #2798 */ -# pragma diag_suppress alignment_reduction_ignored -#elif defined(__ICC) -# pragma warning(disable: 3453 1366) -#elif __has_warning("-Walignment-reduction-ignored") -# if defined(__clang__) -# pragma clang diagnostic ignored "-Walignment-reduction-ignored" -# elif defined(__GNUC__) -# pragma GCC diagnostic ignored "-Walignment-reduction-ignored" -# else -# pragma warning disable "alignment-reduction-ignored" -# endif -#endif /* -Walignment-reduction-ignored */ - -#include "./osal.h" - -/* *INDENT-ON* */ -/* clang-format on */ - -/*----------------------------------------------------------------------------*/ -/* Basic constants and types */ - -/* The minimum number of keys required in a database page. - * Setting this to a larger value will place a smaller bound on the - * maximum size of a data item. Data items larger than this size will - * be pushed into overflow pages instead of being stored directly in - * the B-tree node. This value used to default to 4. With a page size - * of 4096 bytes that meant that any item larger than 1024 bytes would - * go into an overflow page. That also meant that on average 2-3KB of - * each overflow page was wasted space. The value cannot be lower than - * 2 because then there would no longer be a tree structure. With this - * value, items larger than 2KB will go into overflow pages, and on - * average only 1KB will be wasted. */ -#define MDBX_MINKEYS 2 - -/* A stamp that identifies a file as an MDBX file. - * There's nothing special about this value other than that it is easily - * recognizable, and it will reflect any byte order mismatches. */ -#define MDBX_MAGIC UINT64_C(/* 56-bit prime */ 0x59659DBDEF4C11) - -/* The version number for a database's datafile format. */ -#define MDBX_DATA_VERSION 2 -/* The version number for a database's lockfile format. */ -#define MDBX_LOCK_VERSION 2 - -/* handle for the DB used to track free pages. */ -#define FREE_DBI 0 -/* handle for the default DB. */ -#define MAIN_DBI 1 -/* Number of DBs in metapage (free and main) - also hardcoded elsewhere */ -#define CORE_DBS 2 -#define MAX_DBI (INT16_MAX - CORE_DBS) - -/* Number of meta pages - also hardcoded elsewhere */ -#define NUM_METAS 3 - -/* A page number in the database. - * - * MDBX uses 32 bit for page numbers. This limits database - * size up to 2^44 bytes, in case of 4K pages. */ -typedef uint32_t pgno_t; -#define PRIaPGNO PRIu32 -#define MAX_PAGENO ((pgno_t)UINT64_C(0xffffFFFFffff)) -#define MIN_PAGENO NUM_METAS - -/* A transaction ID. */ -typedef uint64_t txnid_t; -#define PRIaTXN PRIi64 -#if MDBX_DEBUG -#define MIN_TXNID UINT64_C(0x100000000) -#else -#define MIN_TXNID UINT64_C(1) -#endif /* MIN_TXNID */ - -/* Used for offsets within a single page. - * Since memory pages are typically 4 or 8KB in size, 12-13 bits, - * this is plenty. */ -typedef uint16_t indx_t; - -#define MEGABYTE ((size_t)1 << 20) - -/*----------------------------------------------------------------------------*/ -/* Core structures for database and shared memory (i.e. format definition) */ -#pragma pack(push, 1) - -/* Reader Lock Table - * - * Readers don't acquire any locks for their data access. Instead, they - * simply record their transaction ID in the reader table. The reader - * mutex is needed just to find an empty slot in the reader table. The - * slot's address is saved in thread-specific data so that subsequent - * read transactions started by the same thread need no further locking to - * proceed. - * - * If MDBX_NOTLS is set, the slot address is not saved in thread-specific data. - * No reader table is used if the database is on a read-only filesystem. - * - * Since the database uses multi-version concurrency control, readers don't - * actually need any locking. This table is used to keep track of which - * readers are using data from which old transactions, so that we'll know - * when a particular old transaction is no longer in use. Old transactions - * that have discarded any data pages can then have those pages reclaimed - * for use by a later write transaction. - * - * The lock table is constructed such that reader slots are aligned with the - * processor's cache line size. Any slot is only ever used by one thread. - * This alignment guarantees that there will be no contention or cache - * thrashing as threads update their own slot info, and also eliminates - * any need for locking when accessing a slot. - * - * A writer thread will scan every slot in the table to determine the oldest - * outstanding reader transaction. Any freed pages older than this will be - * reclaimed by the writer. The writer doesn't use any locks when scanning - * this table. This means that there's no guarantee that the writer will - * see the most up-to-date reader info, but that's not required for correct - * operation - all we need is to know the upper bound on the oldest reader, - * we don't care at all about the newest reader. So the only consequence of - * reading stale information here is that old pages might hang around a - * while longer before being reclaimed. That's actually good anyway, because - * the longer we delay reclaiming old pages, the more likely it is that a - * string of contiguous pages can be found after coalescing old pages from - * many old transactions together. */ - -/* The actual reader record, with cacheline padding. */ -typedef struct MDBX_reader { - /* Current Transaction ID when this transaction began, or (txnid_t)-1. - * Multiple readers that start at the same time will probably have the - * same ID here. Again, it's not important to exclude them from - * anything; all we need to know is which version of the DB they - * started from so we can avoid overwriting any data used in that - * particular version. */ - volatile txnid_t mr_txnid; - - /* The information we store in a single slot of the reader table. - * In addition to a transaction ID, we also record the process and - * thread ID that owns a slot, so that we can detect stale information, - * e.g. threads or processes that went away without cleaning up. - * - * NOTE: We currently don't check for stale records. - * We simply re-init the table when we know that we're the only process - * opening the lock file. */ - - /* The process ID of the process owning this reader txn. */ - volatile mdbx_pid_t mr_pid; - /* The thread ID of the thread owning this txn. */ - volatile mdbx_tid_t mr_tid; - - /* cache line alignment */ - uint8_t pad[MDBX_CACHELINE_SIZE - - (sizeof(txnid_t) + sizeof(mdbx_pid_t) + sizeof(mdbx_tid_t)) % - MDBX_CACHELINE_SIZE]; -} MDBX_reader; - -/* Information about a single database in the environment. */ -typedef struct MDBX_db { - uint16_t md_flags; /* see mdbx_dbi_open */ - uint16_t md_depth; /* depth of this tree */ - uint32_t md_xsize; /* also ksize for LEAF2 pages */ - pgno_t md_root; /* the root page of this tree */ - pgno_t md_branch_pages; /* number of internal pages */ - pgno_t md_leaf_pages; /* number of leaf pages */ - pgno_t md_overflow_pages; /* number of overflow pages */ - uint64_t md_seq; /* table sequence counter */ - uint64_t md_entries; /* number of data items */ - uint64_t md_merkle; /* Merkle tree checksum */ -} MDBX_db; - -/* Meta page content. - * A meta page is the start point for accessing a database snapshot. - * Pages 0-1 are meta pages. Transaction N writes meta page (N % 2). */ -typedef struct MDBX_meta { - /* Stamp identifying this as an MDBX file. - * It must be set to MDBX_MAGIC with MDBX_DATA_VERSION. */ - uint64_t mm_magic_and_version; - - /* txnid that committed this page, the first of a two-phase-update pair */ - volatile txnid_t mm_txnid_a; - - uint16_t mm_extra_flags; /* extra DB flags, zero (nothing) for now */ - uint8_t mm_validator_id; /* ID of checksum and page validation method, - * zero (nothing) for now */ - uint8_t mm_extra_pagehdr; /* extra bytes in the page header, - * zero (nothing) for now */ - - struct { - uint16_t grow; /* datafile growth step in pages */ - uint16_t shrink; /* datafile shrink threshold in pages */ - pgno_t lower; /* minimal size of datafile in pages */ - pgno_t upper; /* maximal size of datafile in pages */ - pgno_t now; /* current size of datafile in pages */ - pgno_t next; /* first unused page in the datafile, - * but actually the file may be shorter. */ - } mm_geo; - - MDBX_db mm_dbs[CORE_DBS]; /* first is free space, 2nd is main db */ - /* The size of pages used in this DB */ -#define mm_psize mm_dbs[FREE_DBI].md_xsize -/* Any persistent environment flags, see mdbx_env */ -#define mm_flags mm_dbs[FREE_DBI].md_flags - mdbx_canary mm_canary; - -#define MDBX_DATASIGN_NONE 0u -#define MDBX_DATASIGN_WEAK 1u -#define SIGN_IS_WEAK(sign) ((sign) == MDBX_DATASIGN_WEAK) -#define SIGN_IS_STEADY(sign) ((sign) > MDBX_DATASIGN_WEAK) -#define META_IS_WEAK(meta) SIGN_IS_WEAK((meta)->mm_datasync_sign) -#define META_IS_STEADY(meta) SIGN_IS_STEADY((meta)->mm_datasync_sign) - volatile uint64_t mm_datasync_sign; - - /* txnid that committed this page, the second of a two-phase-update pair */ - volatile txnid_t mm_txnid_b; -} MDBX_meta; - -/* Common header for all page types. The page type depends on mp_flags. - * - * P_BRANCH and P_LEAF pages have unsorted 'MDBX_node's at the end, with - * sorted mp_ptrs[] entries referring to them. Exception: P_LEAF2 pages - * omit mp_ptrs and pack sorted MDBX_DUPFIXED values after the page header. - * - * P_OVERFLOW records occupy one or more contiguous pages where only the - * first has a page header. They hold the real data of F_BIGDATA nodes. - * - * P_SUBP sub-pages are small leaf "pages" with duplicate data. - * A node with flag F_DUPDATA but not F_SUBDATA contains a sub-page. - * (Duplicate data can also go in sub-databases, which use normal pages.) - * - * P_META pages contain MDBX_meta, the start point of an MDBX snapshot. - * - * Each non-metapage up to MDBX_meta.mm_last_pg is reachable exactly once - * in the snapshot: Either used by a database or listed in a freeDB record. */ -typedef struct MDBX_page { - union { - struct MDBX_page *mp_next; /* for in-memory list of freed pages, - * must be first field, see NEXT_LOOSE_PAGE */ - uint64_t mp_validator; /* checksum of page content or a txnid during - * which the page has been updated */ - }; - uint16_t mp_leaf2_ksize; /* key size if this is a LEAF2 page */ -#define P_BRANCH 0x01 /* branch page */ -#define P_LEAF 0x02 /* leaf page */ -#define P_OVERFLOW 0x04 /* overflow page */ -#define P_META 0x08 /* meta page */ -#define P_DIRTY 0x10 /* dirty page, also set for P_SUBP pages */ -#define P_LEAF2 0x20 /* for MDBX_DUPFIXED records */ -#define P_SUBP 0x40 /* for MDBX_DUPSORT sub-pages */ -#define P_LOOSE 0x4000 /* page was dirtied then freed, can be reused */ -#define P_KEEP 0x8000 /* leave this page alone during spill */ - uint16_t mp_flags; - union { - struct { - indx_t mp_lower; /* lower bound of free space */ - indx_t mp_upper; /* upper bound of free space */ - }; - uint32_t mp_pages; /* number of overflow pages */ - }; - pgno_t mp_pgno; /* page number */ - - /* dynamic size */ - union { - indx_t mp_ptrs[1]; - MDBX_meta mp_meta; - uint8_t mp_data[1]; - }; -} MDBX_page; - -/* Size of the page header, excluding dynamic data at the end */ -#define PAGEHDRSZ ((unsigned)offsetof(MDBX_page, mp_data)) - -/* The maximum size of a database page. - * - * It is 64K, but value-PAGEHDRSZ must fit in MDBX_page.mp_upper. - * - * MDBX will use database pages < OS pages if needed. - * That causes more I/O in write transactions: The OS must - * know (read) the whole page before writing a partial page. - * - * Note that we don't currently support Huge pages. On Linux, - * regular data files cannot use Huge pages, and in general - * Huge pages aren't actually pageable. We rely on the OS - * demand-pager to read our data and page it out when memory - * pressure from other processes is high. So until OSs have - * actual paging support for Huge pages, they're not viable. */ -#define MAX_PAGESIZE 0x10000u -#define MIN_PAGESIZE 512u - -#define MIN_MAPSIZE (MIN_PAGESIZE * MIN_PAGENO) -#if defined(_WIN32) || defined(_WIN64) -#define MAX_MAPSIZE32 UINT32_C(0x38000000) -#else -#define MAX_MAPSIZE32 UINT32_C(0x7ff80000) -#endif -#define MAX_MAPSIZE64 \ - ((sizeof(pgno_t) > 4) ? UINT64_C(0x7fffFFFFfff80000) \ - : MAX_PAGENO * (uint64_t)MAX_PAGESIZE) - -#define MAX_MAPSIZE ((sizeof(size_t) < 8) ? MAX_MAPSIZE32 : MAX_MAPSIZE64) - -/* The header for the reader table (a memory-mapped lock file). */ -typedef struct MDBX_lockinfo { - /* Stamp identifying this as an MDBX file. - * It must be set to MDBX_MAGIC with with MDBX_LOCK_VERSION. */ - uint64_t mti_magic_and_version; - - /* Format of this lock file. Must be set to MDBX_LOCK_FORMAT. */ - uint32_t mti_os_and_format; - - /* Flags which environment was opened. */ - volatile uint32_t mti_envmode; - -#ifdef MDBX_OSAL_LOCK - /* Mutex protecting write-txn. */ - union { - MDBX_OSAL_LOCK mti_wmutex; - uint8_t pad_mti_wmutex[MDBX_OSAL_LOCK_SIZE % sizeof(size_t)]; - }; -#endif -#define MDBX_lockinfo_SIZE_A \ - (8 /* mti_magic_and_version */ + 4 /* mti_os_and_format */ + \ - 4 /* mti_envmode */ + MDBX_OSAL_LOCK_SIZE /* mti_wmutex */ + \ - MDBX_OSAL_LOCK_SIZE % sizeof(size_t) /* pad_mti_wmutex */) - - /* cache-line alignment */ - uint8_t - pad_a[MDBX_CACHELINE_SIZE - MDBX_lockinfo_SIZE_A % MDBX_CACHELINE_SIZE]; - - /* The number of slots that have been used in the reader table. - * This always records the maximum count, it is not decremented - * when readers release their slots. */ - volatile unsigned mti_numreaders; - -#ifdef MDBX_OSAL_LOCK - /* Mutex protecting readers registration access to this table. */ - union { - MDBX_OSAL_LOCK mti_rmutex; - uint8_t pad_mti_rmutex[MDBX_OSAL_LOCK_SIZE % sizeof(size_t)]; - }; -#endif - - volatile txnid_t mti_oldest; - volatile uint32_t mti_readers_refresh_flag; - -#define MDBX_lockinfo_SIZE_B \ - (sizeof(unsigned) /* mti_numreaders */ + \ - MDBX_OSAL_LOCK_SIZE /* mti_rmutex */ + sizeof(txnid_t) /* mti_oldest */ + \ - sizeof(uint32_t) /* mti_readers_refresh_flag */ + \ - MDBX_OSAL_LOCK_SIZE % sizeof(size_t) /* pad_mti_rmutex */) - - /* cache-line alignment */ - uint8_t - pad_b[MDBX_CACHELINE_SIZE - MDBX_lockinfo_SIZE_B % MDBX_CACHELINE_SIZE]; - - MDBX_reader mti_readers[1]; - -} MDBX_lockinfo; - -#pragma pack(pop) - -#define MDBX_LOCKINFO_WHOLE_SIZE \ - ((sizeof(MDBX_lockinfo) + MDBX_CACHELINE_SIZE - 1) & \ - ~((size_t)MDBX_CACHELINE_SIZE - 1)) - -/* Lockfile format signature: version, features and field layout */ -#define MDBX_LOCK_FORMAT \ - ((MDBX_OSAL_LOCK_SIGN << 16) + \ - (uint16_t)(MDBX_LOCKINFO_WHOLE_SIZE + MDBX_CACHELINE_SIZE - 1)) - -#define MDBX_DATA_MAGIC ((MDBX_MAGIC << 8) + MDBX_DATA_VERSION) -#define MDBX_DATA_DEBUG ((MDBX_MAGIC << 8) + 255) - -#define MDBX_LOCK_MAGIC ((MDBX_MAGIC << 8) + MDBX_LOCK_VERSION) -#define MDBX_LOCK_DEBUG ((MDBX_MAGIC << 8) + 255) - -/*----------------------------------------------------------------------------*/ -/* Two kind lists of pages (aka PNL) */ - -/* An PNL is an Page Number List, a sorted array of IDs. The first element of - * the array is a counter for how many actual page-numbers are in the list. - * PNLs are sorted in descending order, this allow cut off a page with lowest - * pgno (at the tail) just truncating the list */ -#define MDBX_PNL_ASCENDING 0 -typedef pgno_t *MDBX_PNL; - -#if MDBX_PNL_ASCENDING -#define MDBX_PNL_ORDERED(first, last) ((first) < (last)) -#define MDBX_PNL_DISORDERED(first, last) ((first) >= (last)) -#else -#define MDBX_PNL_ORDERED(first, last) ((first) > (last)) -#define MDBX_PNL_DISORDERED(first, last) ((first) <= (last)) -#endif - -/* List of txnid, only for MDBX_env.mt_lifo_reclaimed */ -typedef txnid_t *MDBX_TXL; - -/* An ID2 is an ID/pointer pair. */ -typedef struct MDBX_ID2 { - pgno_t mid; /* The ID */ - void *mptr; /* The pointer */ -} MDBX_ID2; - -/* An ID2L is an ID2 List, a sorted array of ID2s. - * The first element's mid member is a count of how many actual - * elements are in the array. The mptr member of the first element is - * unused. The array is sorted in ascending order by mid. */ -typedef MDBX_ID2 *MDBX_ID2L; - -/* PNL sizes - likely should be even bigger - * limiting factors: sizeof(pgno_t), thread stack size */ -#define MDBX_PNL_LOGN 16 /* DB_SIZE is 2^16, UM_SIZE is 2^17 */ -#define MDBX_PNL_DB_SIZE (1 << MDBX_PNL_LOGN) -#define MDBX_PNL_UM_SIZE (1 << (MDBX_PNL_LOGN + 1)) - -#define MDBX_PNL_DB_MAX (MDBX_PNL_DB_SIZE - 1) -#define MDBX_PNL_UM_MAX (MDBX_PNL_UM_SIZE - 1) - -#define MDBX_PNL_SIZEOF(pl) (((pl)[0] + 1) * sizeof(pgno_t)) -#define MDBX_PNL_IS_ZERO(pl) ((pl)[0] == 0) -#define MDBX_PNL_CPY(dst, src) (memcpy(dst, src, MDBX_PNL_SIZEOF(src))) -#define MDBX_PNL_FIRST(pl) ((pl)[1]) -#define MDBX_PNL_LAST(pl) ((pl)[(pl)[0]]) - -/* Current max length of an mdbx_pnl_alloc()ed PNL */ -#define MDBX_PNL_ALLOCLEN(pl) ((pl)[-1]) - -/*----------------------------------------------------------------------------*/ -/* Internal structures */ - -/* Auxiliary DB info. - * The information here is mostly static/read-only. There is - * only a single copy of this record in the environment. */ -typedef struct MDBX_dbx { - MDBX_val md_name; /* name of the database */ - MDBX_cmp_func *md_cmp; /* function for comparing keys */ - MDBX_cmp_func *md_dcmp; /* function for comparing data items */ -} MDBX_dbx; - -/* A database transaction. - * Every operation requires a transaction handle. */ -struct MDBX_txn { -#define MDBX_MT_SIGNATURE UINT32_C(0x93D53A31) - size_t mt_signature; - MDBX_txn *mt_parent; /* parent of a nested txn */ - /* Nested txn under this txn, set together with flag MDBX_TXN_HAS_CHILD */ - MDBX_txn *mt_child; - pgno_t mt_next_pgno; /* next unallocated page */ - pgno_t mt_end_pgno; /* corresponding to the current size of datafile */ - /* The ID of this transaction. IDs are integers incrementing from 1. - * Only committed write transactions increment the ID. If a transaction - * aborts, the ID may be re-used by the next writer. */ - txnid_t mt_txnid; - MDBX_env *mt_env; /* the DB environment */ - /* The list of reclaimed txns from freeDB */ - MDBX_TXL mt_lifo_reclaimed; - /* The list of pages that became unused during this transaction. */ - MDBX_PNL mt_befree_pages; - /* The list of loose pages that became unused and may be reused - * in this transaction, linked through NEXT_LOOSE_PAGE(page). */ - MDBX_page *mt_loose_pages; - /* Number of loose pages (mt_loose_pages) */ - unsigned mt_loose_count; - /* The sorted list of dirty pages we temporarily wrote to disk - * because the dirty list was full. page numbers in here are - * shifted left by 1, deleted slots have the LSB set. */ - MDBX_PNL mt_spill_pages; - union { - /* For write txns: Modified pages. Sorted when not MDBX_WRITEMAP. */ - MDBX_ID2L mt_rw_dirtylist; - /* For read txns: This thread/txn's reader table slot, or NULL. */ - MDBX_reader *mt_ro_reader; - }; - /* Array of records for each DB known in the environment. */ - MDBX_dbx *mt_dbxs; - /* Array of MDBX_db records for each known DB */ - MDBX_db *mt_dbs; - /* Array of sequence numbers for each DB handle */ - unsigned *mt_dbiseqs; - -/* Transaction DB Flags */ -#define DB_DIRTY MDBX_TBL_DIRTY /* DB was written in this txn */ -#define DB_STALE MDBX_TBL_STALE /* Named-DB record is older than txnID */ -#define DB_FRESH MDBX_TBL_FRESH /* Named-DB handle opened in this txn */ -#define DB_CREAT MDBX_TBL_CREAT /* Named-DB handle created in this txn */ -#define DB_VALID 0x10 /* DB handle is valid, see also MDBX_VALID */ -#define DB_USRVALID 0x20 /* As DB_VALID, but not set for FREE_DBI */ -#define DB_DUPDATA 0x40 /* DB is MDBX_DUPSORT data */ - /* In write txns, array of cursors for each DB */ - MDBX_cursor **mt_cursors; - /* Array of flags for each DB */ - uint8_t *mt_dbflags; - /* Number of DB records in use, or 0 when the txn is finished. - * This number only ever increments until the txn finishes; we - * don't decrement it when individual DB handles are closed. */ - MDBX_dbi mt_numdbs; - -/* Transaction Flags */ -/* mdbx_txn_begin() flags */ -#define MDBX_TXN_BEGIN_FLAGS \ - (MDBX_NOMETASYNC | MDBX_NOSYNC | MDBX_RDONLY | MDBX_TRYTXN) -#define MDBX_TXN_NOMETASYNC \ - MDBX_NOMETASYNC /* don't sync meta for this txn on commit */ -#define MDBX_TXN_NOSYNC MDBX_NOSYNC /* don't sync this txn on commit */ -#define MDBX_TXN_RDONLY MDBX_RDONLY /* read-only transaction */ - /* internal txn flags */ -#define MDBX_TXN_WRITEMAP MDBX_WRITEMAP /* copy of MDBX_env flag in writers */ -#define MDBX_TXN_FINISHED 0x01 /* txn is finished or never began */ -#define MDBX_TXN_ERROR 0x02 /* txn is unusable after an error */ -#define MDBX_TXN_DIRTY 0x04 /* must write, even if dirty list is empty */ -#define MDBX_TXN_SPILLS 0x08 /* txn or a parent has spilled pages */ -#define MDBX_TXN_HAS_CHILD 0x10 /* txn has an MDBX_txn.mt_child */ -/* most operations on the txn are currently illegal */ -#define MDBX_TXN_BLOCKED \ - (MDBX_TXN_FINISHED | MDBX_TXN_ERROR | MDBX_TXN_HAS_CHILD) - unsigned mt_flags; - /* dirtylist room: Array size - dirty pages visible to this txn. - * Includes ancestor txns' dirty pages not hidden by other txns' - * dirty/spilled pages. Thus commit(nested txn) has room to merge - * dirtylist into mt_parent after freeing hidden mt_parent pages. */ - unsigned mt_dirtyroom; - mdbx_tid_t mt_owner; /* thread ID that owns this transaction */ - mdbx_canary mt_canary; -}; - -/* Enough space for 2^32 nodes with minimum of 2 keys per node. I.e., plenty. - * At 4 keys per node, enough for 2^64 nodes, so there's probably no need to - * raise this on a 64 bit machine. */ -#define CURSOR_STACK 32 - -struct MDBX_xcursor; - -/* Cursors are used for all DB operations. - * A cursor holds a path of (page pointer, key index) from the DB - * root to a position in the DB, plus other state. MDBX_DUPSORT - * cursors include an xcursor to the current data item. Write txns - * track their cursors and keep them up to date when data moves. - * Exception: An xcursor's pointer to a P_SUBP page can be stale. - * (A node with F_DUPDATA but no F_SUBDATA contains a subpage). */ -struct MDBX_cursor { -#define MDBX_MC_SIGNATURE UINT32_C(0xFE05D5B1) -#define MDBX_MC_READY4CLOSE UINT32_C(0x2817A047) -#define MDBX_MC_WAIT4EOT UINT32_C(0x90E297A7) - uint32_t mc_signature; - /* The database handle this cursor operates on */ - MDBX_dbi mc_dbi; - /* Next cursor on this DB in this txn */ - MDBX_cursor *mc_next; - /* Backup of the original cursor if this cursor is a shadow */ - MDBX_cursor *mc_backup; - /* Context used for databases with MDBX_DUPSORT, otherwise NULL */ - struct MDBX_xcursor *mc_xcursor; - /* The transaction that owns this cursor */ - MDBX_txn *mc_txn; - /* The database record for this cursor */ - MDBX_db *mc_db; - /* The database auxiliary record for this cursor */ - MDBX_dbx *mc_dbx; - /* The mt_dbflag for this database */ - uint8_t *mc_dbflag; - uint16_t mc_snum; /* number of pushed pages */ - uint16_t mc_top; /* index of top page, normally mc_snum-1 */ - /* Cursor state flags. */ -#define C_INITIALIZED 0x01 /* cursor has been initialized and is valid */ -#define C_EOF 0x02 /* No more data */ -#define C_SUB 0x04 /* Cursor is a sub-cursor */ -#define C_DEL 0x08 /* last op was a cursor_del */ -#define C_UNTRACK 0x40 /* Un-track cursor when closing */ -#define C_RECLAIMING 0x80 /* FreeDB lookup is prohibited */ - unsigned mc_flags; /* see mdbx_cursor */ - MDBX_page *mc_pg[CURSOR_STACK]; /* stack of pushed pages */ - indx_t mc_ki[CURSOR_STACK]; /* stack of page indices */ -}; - -/* Context for sorted-dup records. - * We could have gone to a fully recursive design, with arbitrarily - * deep nesting of sub-databases. But for now we only handle these - * levels - main DB, optional sub-DB, sorted-duplicate DB. */ -typedef struct MDBX_xcursor { - /* A sub-cursor for traversing the Dup DB */ - MDBX_cursor mx_cursor; - /* The database record for this Dup DB */ - MDBX_db mx_db; - /* The auxiliary DB record for this Dup DB */ - MDBX_dbx mx_dbx; - /* The mt_dbflag for this Dup DB */ - uint8_t mx_dbflag; -} MDBX_xcursor; - -/* Check if there is an inited xcursor, so XCURSOR_REFRESH() is proper */ -#define XCURSOR_INITED(mc) \ - ((mc)->mc_xcursor && ((mc)->mc_xcursor->mx_cursor.mc_flags & C_INITIALIZED)) - -/* Update sub-page pointer, if any, in mc->mc_xcursor. - * Needed when the node which contains the sub-page may have moved. - * Called with mp = mc->mc_pg[mc->mc_top], ki = mc->mc_ki[mc->mc_top]. */ -#define XCURSOR_REFRESH(mc, mp, ki) \ - do { \ - MDBX_page *xr_pg = (mp); \ - MDBX_node *xr_node = NODEPTR(xr_pg, ki); \ - if ((xr_node->mn_flags & (F_DUPDATA | F_SUBDATA)) == F_DUPDATA) \ - (mc)->mc_xcursor->mx_cursor.mc_pg[0] = NODEDATA(xr_node); \ - } while (0) - -/* State of FreeDB old pages, stored in the MDBX_env */ -typedef struct MDBX_pgstate { - pgno_t *mf_reclaimed_pglist; /* Reclaimed freeDB pages, or NULL before use */ - txnid_t mf_last_reclaimed; /* ID of last used record, or 0 if - !mf_reclaimed_pglist */ -} MDBX_pgstate; - -/* The database environment. */ -struct MDBX_env { -#define MDBX_ME_SIGNATURE UINT32_C(0x9A899641) - size_t me_signature; - mdbx_mmap_t me_dxb_mmap; /* The main data file */ -#define me_map me_dxb_mmap.dxb -#define me_fd me_dxb_mmap.fd -#define me_mapsize me_dxb_mmap.length - mdbx_mmap_t me_lck_mmap; /* The lock file */ -#define me_lfd me_lck_mmap.fd -#define me_lck me_lck_mmap.lck - -/* Failed to update the meta page. Probably an I/O error. */ -#define MDBX_FATAL_ERROR UINT32_C(0x80000000) -/* Additional flag for mdbx_sync_locked() */ -#define MDBX_SHRINK_ALLOWED UINT32_C(0x40000000) -/* Some fields are initialized. */ -#define MDBX_ENV_ACTIVE UINT32_C(0x20000000) -/* me_txkey is set */ -#define MDBX_ENV_TXKEY UINT32_C(0x10000000) - uint32_t me_flags; /* see mdbx_env */ - unsigned me_psize; /* DB page size, inited from me_os_psize */ - unsigned me_psize2log; /* log2 of DB page size */ - unsigned me_os_psize; /* OS page size, from mdbx_syspagesize() */ - unsigned me_maxreaders; /* size of the reader table */ - /* Max MDBX_lockinfo.mti_numreaders of interest to mdbx_env_close() */ - unsigned me_close_readers; - mdbx_fastmutex_t me_dbi_lock; - MDBX_dbi me_numdbs; /* number of DBs opened */ - MDBX_dbi me_maxdbs; /* size of the DB table */ - mdbx_pid_t me_pid; /* process ID of this env */ - mdbx_thread_key_t me_txkey; /* thread-key for readers */ - char *me_path; /* path to the DB files */ - void *me_pbuf; /* scratch area for DUPSORT put() */ - MDBX_txn *me_txn; /* current write transaction */ - MDBX_txn *me_txn0; /* prealloc'd write transaction */ -#ifdef MDBX_OSAL_LOCK - MDBX_OSAL_LOCK *me_wmutex; /* write-txn mutex */ -#endif - MDBX_dbx *me_dbxs; /* array of static DB info */ - uint16_t *me_dbflags; /* array of flags from MDBX_db.md_flags */ - unsigned *me_dbiseqs; /* array of dbi sequence numbers */ - volatile txnid_t *me_oldest; /* ID of oldest reader last time we looked */ - MDBX_pgstate me_pgstate; /* state of old pages from freeDB */ -#define me_last_reclaimed me_pgstate.mf_last_reclaimed -#define me_reclaimed_pglist me_pgstate.mf_reclaimed_pglist - MDBX_page *me_dpages; /* list of malloc'd blocks for re-use */ - /* PNL of pages that became unused in a write txn */ - MDBX_PNL me_free_pgs; - /* ID2L of pages written during a write txn. Length MDBX_PNL_UM_SIZE. */ - MDBX_ID2L me_dirtylist; - /* Max number of freelist items that can fit in a single overflow page */ - unsigned me_maxfree_1pg; - /* Max size of a node on a page */ - unsigned me_nodemax; - unsigned me_maxkey_limit; /* max size of a key */ - mdbx_pid_t me_live_reader; /* have liveness lock in reader table */ - void *me_userctx; /* User-settable context */ - size_t me_sync_pending; /* Total dirty/non-sync'ed bytes - * since the last mdbx_env_sync() */ - size_t me_sync_threshold; /* Treshold of above to force synchronous flush */ - MDBX_oom_func *me_oom_func; /* Callback for kicking laggard readers */ - txnid_t me_oldest_stub; -#if MDBX_DEBUG - MDBX_assert_func *me_assert_func; /* Callback for assertion failures */ -#endif -#ifdef USE_VALGRIND - int me_valgrind_handle; -#endif - - struct { - size_t lower; /* minimal size of datafile */ - size_t upper; /* maximal size of datafile */ - size_t now; /* current size of datafile */ - size_t grow; /* step to grow datafile */ - size_t shrink; /* threshold to shrink datafile */ - } me_dbgeo; /* */ - -#if defined(_WIN32) || defined(_WIN64) - MDBX_srwlock me_remap_guard; - /* Workaround for LockFileEx and WriteFile multithread bug */ - CRITICAL_SECTION me_windowsbug_lock; -#else - mdbx_fastmutex_t me_lckless_wmutex; - mdbx_fastmutex_t me_remap_guard; -#endif -}; - -/* Nested transaction */ -typedef struct MDBX_ntxn { - MDBX_txn mnt_txn; /* the transaction */ - MDBX_pgstate mnt_pgstate; /* parent transaction's saved freestate */ -} MDBX_ntxn; - -/*----------------------------------------------------------------------------*/ -/* Debug and Logging stuff */ - -extern int mdbx_runtime_flags; -extern MDBX_debug_func *mdbx_debug_logger; -extern txnid_t mdbx_debug_edge; - -void mdbx_debug_log(int type, const char *function, int line, const char *fmt, - ...) -#if defined(__GNUC__) || __has_attribute(format) - __attribute__((format(printf, 4, 5))) -#endif - ; - -void mdbx_panic(const char *fmt, ...) -#if defined(__GNUC__) || __has_attribute(format) - __attribute__((format(printf, 1, 2))) -#endif - ; - -#if MDBX_DEBUG - -#define mdbx_assert_enabled() unlikely(mdbx_runtime_flags &MDBX_DBG_ASSERT) - -#define mdbx_audit_enabled() unlikely(mdbx_runtime_flags &MDBX_DBG_AUDIT) - -#define mdbx_debug_enabled(type) \ - unlikely(mdbx_runtime_flags &(type & (MDBX_DBG_TRACE | MDBX_DBG_EXTRA))) - -#else -#define mdbx_debug_enabled(type) (0) -#define mdbx_audit_enabled() (0) -#ifndef NDEBUG -#define mdbx_assert_enabled() (1) -#else -#define mdbx_assert_enabled() (0) -#endif /* NDEBUG */ -#endif /* MDBX_DEBUG */ - -#define mdbx_print(fmt, ...) \ - mdbx_debug_log(MDBX_DBG_PRINT, NULL, 0, fmt, ##__VA_ARGS__) - -#define mdbx_trace(fmt, ...) \ - do { \ - if (mdbx_debug_enabled(MDBX_DBG_TRACE)) \ - mdbx_debug_log(MDBX_DBG_TRACE, __FUNCTION__, __LINE__, fmt "\n", \ - ##__VA_ARGS__); \ - } while (0) - -#define mdbx_verbose(fmt, ...) \ - do { \ - if (mdbx_debug_enabled(MDBX_DBG_TRACE /* FIXME */)) \ - mdbx_debug_log(MDBX_DBG_TRACE /* FIXME */, __FUNCTION__, __LINE__, \ - fmt "\n", ##__VA_ARGS__); \ - } while (0) - -#define mdbx_info(fmt, ...) \ - do { \ - if (mdbx_debug_enabled(MDBX_DBG_TRACE /* FIXME */)) \ - mdbx_debug_log(MDBX_DBG_TRACE /* FIXME */, __FUNCTION__, __LINE__, \ - fmt "\n", ##__VA_ARGS__); \ - } while (0) - -#define mdbx_notice(fmt, ...) \ - do { \ - if (mdbx_debug_enabled(MDBX_DBG_TRACE /* FIXME */)) \ - mdbx_debug_log(MDBX_DBG_TRACE /* FIXME */, __FUNCTION__, __LINE__, \ - fmt "\n", ##__VA_ARGS__); \ - } while (0) - -#define mdbx_warning(fmt, ...) \ - do { \ - if (mdbx_debug_enabled(MDBX_DBG_TRACE /* FIXME */)) \ - mdbx_debug_log(MDBX_DBG_TRACE /* FIXME */, __FUNCTION__, __LINE__, \ - fmt "\n", ##__VA_ARGS__); \ - } while (0) - -#define mdbx_error(fmt, ...) \ - do { \ - if (mdbx_debug_enabled(MDBX_DBG_TRACE /* FIXME */)) \ - mdbx_debug_log(MDBX_DBG_TRACE /* FIXME */, __FUNCTION__, __LINE__, \ - fmt "\n", ##__VA_ARGS__); \ - } while (0) - -#define mdbx_fatal(fmt, ...) \ - do { \ - if (mdbx_debug_enabled(MDBX_DBG_TRACE /* FIXME */)) \ - mdbx_debug_log(MDBX_DBG_TRACE /* FIXME */, __FUNCTION__, __LINE__, \ - fmt "\n", ##__VA_ARGS__); \ - } while (0) - -#define mdbx_debug(fmt, ...) \ - do { \ - if (mdbx_debug_enabled(MDBX_DBG_TRACE)) \ - mdbx_debug_log(MDBX_DBG_TRACE, __FUNCTION__, __LINE__, fmt "\n", \ - ##__VA_ARGS__); \ - } while (0) - -#define mdbx_debug_print(fmt, ...) \ - do { \ - if (mdbx_debug_enabled(MDBX_DBG_TRACE)) \ - mdbx_debug_log(MDBX_DBG_TRACE, NULL, 0, fmt, ##__VA_ARGS__); \ - } while (0) - -#define mdbx_debug_extra(fmt, ...) \ - do { \ - if (mdbx_debug_enabled(MDBX_DBG_EXTRA)) \ - mdbx_debug_log(MDBX_DBG_EXTRA, __FUNCTION__, __LINE__, fmt, \ - ##__VA_ARGS__); \ - } while (0) - -#define mdbx_debug_extra_print(fmt, ...) \ - do { \ - if (mdbx_debug_enabled(MDBX_DBG_EXTRA)) \ - mdbx_debug_log(MDBX_DBG_EXTRA, NULL, 0, fmt, ##__VA_ARGS__); \ - } while (0) - -#define mdbx_ensure_msg(env, expr, msg) \ - do { \ - if (unlikely(!(expr))) \ - mdbx_assert_fail(env, msg, __FUNCTION__, __LINE__); \ - } while (0) - -#define mdbx_ensure(env, expr) mdbx_ensure_msg(env, expr, #expr) - -/* assert(3) variant in environment context */ -#define mdbx_assert(env, expr) \ - do { \ - if (mdbx_assert_enabled()) \ - mdbx_ensure(env, expr); \ - } while (0) - -/* assert(3) variant in cursor context */ -#define mdbx_cassert(mc, expr) mdbx_assert((mc)->mc_txn->mt_env, expr) - -/* assert(3) variant in transaction context */ -#define mdbx_tassert(txn, expr) mdbx_assert((txn)->mt_env, expr) - -static __inline void mdbx_jitter4testing(bool tiny) { -#ifndef NDEBUG - if (MDBX_DBG_JITTER & mdbx_runtime_flags) - mdbx_osal_jitter(tiny); -#else - (void)tiny; -#endif -} - -/*----------------------------------------------------------------------------*/ -/* Internal prototypes and inlines */ - -int mdbx_reader_check0(MDBX_env *env, int rlocked, int *dead); -int mdbx_rthc_alloc(mdbx_thread_key_t *key, MDBX_reader *begin, - MDBX_reader *end); -void mdbx_rthc_remove(const mdbx_thread_key_t key); - -void mdbx_rthc_global_init(void); -void mdbx_rthc_global_dtor(void); -void mdbx_rthc_thread_dtor(void *ptr); - -static __inline bool mdbx_is_power2(size_t x) { return (x & (x - 1)) == 0; } - -static __inline size_t mdbx_roundup2(size_t value, size_t granularity) { - assert(mdbx_is_power2(granularity)); - return (value + granularity - 1) & ~(granularity - 1); -} - -static __inline unsigned mdbx_log2(size_t value) { - assert(mdbx_is_power2(value)); - - unsigned log = 0; - while (value > 1) { - log += 1; - value >>= 1; - } - return log; -} - -#define MDBX_IS_ERROR(rc) \ - ((rc) != MDBX_RESULT_TRUE && (rc) != MDBX_RESULT_FALSE) - -/* Internal error codes, not exposed outside libmdbx */ -#define MDBX_NO_ROOT (MDBX_LAST_ERRCODE + 10) - -/* Debuging output value of a cursor DBI: Negative in a sub-cursor. */ -#define DDBI(mc) \ - (((mc)->mc_flags & C_SUB) ? -(int)(mc)->mc_dbi : (int)(mc)->mc_dbi) - -/* Key size which fits in a DKBUF. */ -#define DKBUF_MAXKEYSIZE 511 /* FIXME */ - -#if MDBX_DEBUG -#define DKBUF char _kbuf[DKBUF_MAXKEYSIZE * 4 + 2] -#define DKEY(x) mdbx_dkey(x, _kbuf, DKBUF_MAXKEYSIZE * 2 + 1) -#define DVAL(x) \ - mdbx_dkey(x, _kbuf + DKBUF_MAXKEYSIZE * 2 + 1, DKBUF_MAXKEYSIZE * 2 + 1) -#else -#define DKBUF ((void)(0)) -#define DKEY(x) ("-") -#define DVAL(x) ("-") -#endif - -/* An invalid page number. - * Mainly used to denote an empty tree. */ -#define P_INVALID (~(pgno_t)0) - -/* Test if the flags f are set in a flag word w. */ -#define F_ISSET(w, f) (((w) & (f)) == (f)) - -/* Round n up to an even number. */ -#define EVEN(n) (((n) + 1U) & -2) /* sign-extending -2 to match n+1U */ - -/* Default size of memory map. - * This is certainly too small for any actual applications. Apps should - * always set the size explicitly using mdbx_env_set_mapsize(). */ -#define DEFAULT_MAPSIZE 1048576 - -/* Number of slots in the reader table. - * This value was chosen somewhat arbitrarily. The 61 is a prime number, - * and such readers plus a couple mutexes fit into single 4KB page. - * Applications should set the table size using mdbx_env_set_maxreaders(). */ -#define DEFAULT_READERS 61 - -/* Address of first usable data byte in a page, after the header */ -#define PAGEDATA(p) ((void *)((char *)(p) + PAGEHDRSZ)) - -/* Number of nodes on a page */ -#define NUMKEYS(p) ((unsigned)(p)->mp_lower >> 1) - -/* The amount of space remaining in the page */ -#define SIZELEFT(p) (indx_t)((p)->mp_upper - (p)->mp_lower) - -/* The percentage of space used in the page, in tenths of a percent. */ -#define PAGEFILL(env, p) \ - (1024UL * ((env)->me_psize - PAGEHDRSZ - SIZELEFT(p)) / \ - ((env)->me_psize - PAGEHDRSZ)) -/* The minimum page fill factor, in tenths of a percent. - * Pages emptier than this are candidates for merging. */ -#define FILL_THRESHOLD 256 - -/* Test if a page is a leaf page */ -#define IS_LEAF(p) F_ISSET((p)->mp_flags, P_LEAF) -/* Test if a page is a LEAF2 page */ -#define IS_LEAF2(p) F_ISSET((p)->mp_flags, P_LEAF2) -/* Test if a page is a branch page */ -#define IS_BRANCH(p) F_ISSET((p)->mp_flags, P_BRANCH) -/* Test if a page is an overflow page */ -#define IS_OVERFLOW(p) unlikely(F_ISSET((p)->mp_flags, P_OVERFLOW)) -/* Test if a page is a sub page */ -#define IS_SUBP(p) F_ISSET((p)->mp_flags, P_SUBP) - -/* The number of overflow pages needed to store the given size. */ -#define OVPAGES(env, size) (bytes2pgno(env, PAGEHDRSZ - 1 + (size)) + 1) - -/* Link in MDBX_txn.mt_loose_pages list. - * Kept outside the page header, which is needed when reusing the page. */ -#define NEXT_LOOSE_PAGE(p) (*(MDBX_page **)((p) + 2)) - -/* Header for a single key/data pair within a page. - * Used in pages of type P_BRANCH and P_LEAF without P_LEAF2. - * We guarantee 2-byte alignment for 'MDBX_node's. - * - * mn_lo and mn_hi are used for data size on leaf nodes, and for child - * pgno on branch nodes. On 64 bit platforms, mn_flags is also used - * for pgno. (Branch nodes have no flags). Lo and hi are in host byte - * order in case some accesses can be optimized to 32-bit word access. - * - * Leaf node flags describe node contents. F_BIGDATA says the node's - * data part is the page number of an overflow page with actual data. - * F_DUPDATA and F_SUBDATA can be combined giving duplicate data in - * a sub-page/sub-database, and named databases (just F_SUBDATA). */ -typedef struct MDBX_node { - union { - struct { -#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ - union { - struct { - uint16_t mn_lo, mn_hi; /* part of data size or pgno */ - }; - uint32_t mn_dsize; - }; - uint16_t mn_flags; /* see mdbx_node */ - uint16_t mn_ksize; /* key size */ -#else - uint16_t mn_ksize; /* key size */ - uint16_t mn_flags; /* see mdbx_node */ - union { - struct { - uint16_t mn_hi, mn_lo; /* part of data size or pgno */ - }; - uint32_t mn_dsize; - }; -#endif - }; - pgno_t mn_ksize_and_pgno; - }; - -/* mdbx_node Flags */ -#define F_BIGDATA 0x01 /* data put on overflow page */ -#define F_SUBDATA 0x02 /* data is a sub-database */ -#define F_DUPDATA 0x04 /* data has duplicates */ - -/* valid flags for mdbx_node_add() */ -#define NODE_ADD_FLAGS (F_DUPDATA | F_SUBDATA | MDBX_RESERVE | MDBX_APPEND) - uint8_t mn_data[1]; /* key and data are appended here */ -} MDBX_node; - -/* Size of the node header, excluding dynamic data at the end */ -#define NODESIZE offsetof(MDBX_node, mn_data) - -/* Bit position of top word in page number, for shifting mn_flags */ -#define PGNO_TOPWORD ((pgno_t)-1 > 0xffffffffu ? 32 : 0) - -/* Size of a node in a branch page with a given key. - * This is just the node header plus the key, there is no data. */ -#define INDXSIZE(k) (NODESIZE + ((k) == NULL ? 0 : (k)->iov_len)) - -/* Size of a node in a leaf page with a given key and data. - * This is node header plus key plus data size. */ -#define LEAFSIZE(k, d) (NODESIZE + (k)->iov_len + (d)->iov_len) - -/* Address of node i in page p */ -static __inline MDBX_node *NODEPTR(MDBX_page *p, unsigned i) { - assert(NUMKEYS(p) > (unsigned)(i)); - return (MDBX_node *)((char *)(p) + (p)->mp_ptrs[i] + PAGEHDRSZ); -} - -/* Address of the key for the node */ -#define NODEKEY(node) (void *)((node)->mn_data) - -/* Address of the data for a node */ -#define NODEDATA(node) (void *)((char *)(node)->mn_data + (node)->mn_ksize) - -/* Get the page number pointed to by a branch node */ -static __inline pgno_t NODEPGNO(const MDBX_node *node) { - pgno_t pgno; - if (UNALIGNED_OK) { - pgno = node->mn_ksize_and_pgno; - if (sizeof(pgno_t) > 4) - pgno &= MAX_PAGENO; - } else { - pgno = node->mn_lo | ((pgno_t)node->mn_hi << 16); - if (sizeof(pgno_t) > 4) - pgno |= ((uint64_t)node->mn_flags) << 32; - } - return pgno; -} - -/* Set the page number in a branch node */ -static __inline void SETPGNO(MDBX_node *node, pgno_t pgno) { - assert(pgno <= MAX_PAGENO); - - if (UNALIGNED_OK) { - if (sizeof(pgno_t) > 4) - pgno |= ((uint64_t)node->mn_ksize) << 48; - node->mn_ksize_and_pgno = pgno; - } else { - node->mn_lo = (uint16_t)pgno; - node->mn_hi = (uint16_t)(pgno >> 16); - if (sizeof(pgno_t) > 4) - node->mn_flags = (uint16_t)((uint64_t)pgno >> 32); - } -} - -/* Get the size of the data in a leaf node */ -static __inline size_t NODEDSZ(const MDBX_node *node) { - size_t size; - if (UNALIGNED_OK) { - size = node->mn_dsize; - } else { - size = node->mn_lo | ((size_t)node->mn_hi << 16); - } - return size; -} - -/* Set the size of the data for a leaf node */ -static __inline void SETDSZ(MDBX_node *node, size_t size) { - assert(size < INT_MAX); - if (UNALIGNED_OK) { - node->mn_dsize = (uint32_t)size; - } else { - node->mn_lo = (uint16_t)size; - node->mn_hi = (uint16_t)(size >> 16); - } -} - -/* The size of a key in a node */ -#define NODEKSZ(node) ((node)->mn_ksize) - -/* The address of a key in a LEAF2 page. - * LEAF2 pages are used for MDBX_DUPFIXED sorted-duplicate sub-DBs. - * There are no node headers, keys are stored contiguously. */ -#define LEAF2KEY(p, i, ks) ((char *)(p) + PAGEHDRSZ + ((i) * (ks))) - -/* Set the node's key into keyptr, if requested. */ -#define MDBX_GET_KEY(node, keyptr) \ - do { \ - if ((keyptr) != NULL) { \ - (keyptr)->iov_len = NODEKSZ(node); \ - (keyptr)->iov_base = NODEKEY(node); \ - } \ - } while (0) - -/* Set the node's key into key. */ -#define MDBX_GET_KEY2(node, key) \ - do { \ - key.iov_len = NODEKSZ(node); \ - key.iov_base = NODEKEY(node); \ - } while (0) - -#define MDBX_VALID 0x8000 /* DB handle is valid, for me_dbflags */ -#define PERSISTENT_FLAGS (0xffff & ~(MDBX_VALID)) -/* mdbx_dbi_open() flags */ -#define VALID_FLAGS \ - (MDBX_REVERSEKEY | MDBX_DUPSORT | MDBX_INTEGERKEY | MDBX_DUPFIXED | \ - MDBX_INTEGERDUP | MDBX_REVERSEDUP | MDBX_CREATE) - -/* max number of pages to commit in one writev() call */ -#define MDBX_COMMIT_PAGES 64 -#if defined(IOV_MAX) && IOV_MAX < MDBX_COMMIT_PAGES /* sysconf(_SC_IOV_MAX) */ -#undef MDBX_COMMIT_PAGES -#define MDBX_COMMIT_PAGES IOV_MAX -#endif - -/* LY: fast enough on most systems - * - * / - * | -1, a < b - * cmp2int(a,b) = < 0, a == b - * | 1, a > b - * \ - */ -#if 1 -#define mdbx_cmp2int(a, b) (((b) > (a)) ? -1 : (a) > (b)) -#else -#define mdbx_cmp2int(a, b) (((a) > (b)) - ((b) > (a))) -#endif - -static __inline size_t pgno2bytes(const MDBX_env *env, pgno_t pgno) { - mdbx_assert(env, (1u << env->me_psize2log) == env->me_psize); - return ((size_t)pgno) << env->me_psize2log; -} - -static __inline MDBX_page *pgno2page(const MDBX_env *env, pgno_t pgno) { - return (MDBX_page *)(env->me_map + pgno2bytes(env, pgno)); -} - -static __inline pgno_t bytes2pgno(const MDBX_env *env, size_t bytes) { - mdbx_assert(env, (env->me_psize >> env->me_psize2log) == 1); - return (pgno_t)(bytes >> env->me_psize2log); -} - -static __inline pgno_t pgno_add(pgno_t base, pgno_t augend) { - assert(base <= MAX_PAGENO); - return (augend < MAX_PAGENO - base) ? base + augend : MAX_PAGENO; -} - -static __inline pgno_t pgno_sub(pgno_t base, pgno_t subtrahend) { - assert(base >= MIN_PAGENO); - return (subtrahend < base - MIN_PAGENO) ? base - subtrahend : MIN_PAGENO; -} - -static __inline size_t pgno_align2os_bytes(const MDBX_env *env, pgno_t pgno) { - return mdbx_roundup2(pgno2bytes(env, pgno), env->me_os_psize); -} - -static __inline pgno_t pgno_align2os_pgno(const MDBX_env *env, pgno_t pgno) { - return bytes2pgno(env, pgno_align2os_bytes(env, pgno)); -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/defs.h b/plugins/Dbx_mdbx/src/libmdbx/src/defs.h deleted file mode 100644 index b6076cc1b3..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/defs.h +++ /dev/null @@ -1,421 +0,0 @@ -/* - * Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#pragma once -/* *INDENT-OFF* */ -/* clang-format off */ - -#ifndef __GNUC_PREREQ -# if defined(__GNUC__) && defined(__GNUC_MINOR__) -# define __GNUC_PREREQ(maj, min) \ - ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) -# else -# define __GNUC_PREREQ(maj, min) (0) -# endif -#endif /* __GNUC_PREREQ */ - -#ifndef __CLANG_PREREQ -# ifdef __clang__ -# define __CLANG_PREREQ(maj,min) \ - ((__clang_major__ << 16) + __clang_minor__ >= ((maj) << 16) + (min)) -# else -# define __CLANG_PREREQ(maj,min) (0) -# endif -#endif /* __CLANG_PREREQ */ - -#ifndef __GLIBC_PREREQ -# if defined(__GLIBC__) && defined(__GLIBC_MINOR__) -# define __GLIBC_PREREQ(maj, min) \ - ((__GLIBC__ << 16) + __GLIBC_MINOR__ >= ((maj) << 16) + (min)) -# else -# define __GLIBC_PREREQ(maj, min) (0) -# endif -#endif /* __GLIBC_PREREQ */ - -#ifndef __has_attribute -# define __has_attribute(x) (0) -#endif - -#ifndef __has_feature -# define __has_feature(x) (0) -#endif - -#ifndef __has_extension -# define __has_extension(x) (0) -#endif - -#ifndef __has_builtin -# define __has_builtin(x) (0) -#endif - -#ifndef __has_warning -# define __has_warning(x) (0) -#endif - -#ifndef __has_include -# define __has_include(x) (0) -#endif - -#if __has_feature(thread_sanitizer) -# define __SANITIZE_THREAD__ 1 -#endif - -#if __has_feature(address_sanitizer) -# define __SANITIZE_ADDRESS__ 1 -#endif - -/*----------------------------------------------------------------------------*/ - -#ifndef __extern_C -# ifdef __cplusplus -# define __extern_C extern "C" -# else -# define __extern_C -# endif -#endif /* __extern_C */ - -#ifndef __cplusplus -# ifndef bool -# define bool _Bool -# endif -# ifndef true -# define true (1) -# endif -# ifndef false -# define false (0) -# endif -#endif - -#if !defined(nullptr) && !defined(__cplusplus) || (__cplusplus < 201103L && !defined(_MSC_VER)) -# define nullptr NULL -#endif - -/*----------------------------------------------------------------------------*/ - -#ifndef __alwaysinline -# if defined(__GNUC__) || __has_attribute(always_inline) -# define __alwaysinline __inline __attribute__((always_inline)) -# elif defined(_MSC_VER) -# define __alwaysinline __forceinline -# else -# define __alwaysinline -# endif -#endif /* __alwaysinline */ - -#ifndef __noinline -# if defined(__GNUC__) || __has_attribute(noinline) -# define __noinline __attribute__((noinline)) -# elif defined(_MSC_VER) -# define __noinline __declspec(noinline) -# elif defined(__SUNPRO_C) || defined(__sun) || defined(sun) -# define __noinline inline -# elif !defined(__INTEL_COMPILER) -# define __noinline /* FIXME ? */ -# endif -#endif /* __noinline */ - -#ifndef __must_check_result -# if defined(__GNUC__) || __has_attribute(warn_unused_result) -# define __must_check_result __attribute__((warn_unused_result)) -# else -# define __must_check_result -# endif -#endif /* __must_check_result */ - -#ifndef __deprecated -# if defined(__GNUC__) || __has_attribute(deprecated) -# define __deprecated __attribute__((deprecated)) -# elif defined(_MSC_VER) -# define __deprecated __declspec(deprecated) -# else -# define __deprecated -# endif -#endif /* __deprecated */ - -#if !defined(__noop) && !defined(_MSC_VER) -# ifdef __cplusplus - static inline void __noop_consume_args() {} - template <typename First, typename... Rest> - static inline void - __noop_consume_args(const First &first, const Rest &... rest) { - (void) first; __noop_consume_args(rest...); - } -# define __noop(...) __noop_consume_args(__VA_ARGS__) -# elif defined(__GNUC__) && (!defined(__STRICT_ANSI__) || !__STRICT_ANSI__) - static __inline void __noop_consume_args(void* anchor, ...) { - (void) anchor; - } -# define __noop(...) __noop_consume_args(0, ##__VA_ARGS__) -# else -# define __noop(...) do {} while(0) -# endif -#endif /* __noop */ - -#ifndef __fallthrough -# if __GNUC_PREREQ(7, 0) || __has_attribute(fallthrough) -# define __fallthrough __attribute__((fallthrough)) -# else -# define __fallthrough __noop() -# endif -#endif /* __fallthrough */ - -#ifndef __unreachable -# if __GNUC_PREREQ(4,5) -# define __unreachable() __builtin_unreachable() -# elif defined(_MSC_VER) -# define __unreachable() __assume(0) -# else -# define __unreachable() __noop() -# endif -#endif /* __unreachable */ - -#ifndef __prefetch -# if defined(__GNUC__) || defined(__clang__) -# define __prefetch(ptr) __builtin_prefetch(ptr) -# else -# define __prefetch(ptr) __noop(ptr) -# endif -#endif /* __prefetch */ - -#ifndef __noreturn -# if defined(__GNUC__) || __has_attribute(noreturn) -# define __noreturn __attribute__((noreturn)) -# elif defined(_MSC_VER) -# define __noreturn __declspec(noreturn) -# else -# define __noreturn -# endif -#endif /* __noreturn */ - -#ifndef __nothrow -# if defined(__GNUC__) || __has_attribute(nothrow) -# define __nothrow __attribute__((nothrow)) -# elif defined(_MSC_VER) && defined(__cplusplus) -# define __nothrow __declspec(nothrow) -# else -# define __nothrow -# endif -#endif /* __nothrow */ - -#ifndef __pure_function - /* Many functions have no effects except the return value and their - * return value depends only on the parameters and/or global variables. - * Such a function can be subject to common subexpression elimination - * and loop optimization just as an arithmetic operator would be. - * These functions should be declared with the attribute pure. */ -# if defined(__GNUC__) || __has_attribute(pure) -# define __pure_function __attribute__((pure)) -# else -# define __pure_function -# endif -#endif /* __pure_function */ - -#ifndef __const_function - /* Many functions do not examine any values except their arguments, - * and have no effects except the return value. Basically this is just - * slightly more strict class than the PURE attribute, since function - * is not allowed to read global memory. - * - * Note that a function that has pointer arguments and examines the - * data pointed to must not be declared const. Likewise, a function - * that calls a non-const function usually must not be const. - * It does not make sense for a const function to return void. */ -# if defined(__GNUC__) || __has_attribute(const) -# define __const_function __attribute__((const)) -# else -# define __const_function -# endif -#endif /* __const_function */ - -#ifndef __dll_hidden -# if defined(__GNUC__) || __has_attribute(visibility) -# define __hidden __attribute__((visibility("hidden"))) -# else -# define __hidden -# endif -#endif /* __dll_hidden */ - -#ifndef __optimize -# if defined(__OPTIMIZE__) -# if defined(__clang__) && !__has_attribute(optimize) -# define __optimize(ops) -# elif defined(__GNUC__) || __has_attribute(optimize) -# define __optimize(ops) __attribute__((optimize(ops))) -# else -# define __optimize(ops) -# endif -# else -# define __optimize(ops) -# endif -#endif /* __optimize */ - -#ifndef __hot -# if defined(__OPTIMIZE__) -# if defined(__e2k__) -# define __hot __attribute__((hot)) __optimize(3) -# elif defined(__clang__) && !__has_attribute(hot) - /* just put frequently used functions in separate section */ -# define __hot __attribute__((section("text.hot"))) __optimize("O3") -# elif defined(__GNUC__) || __has_attribute(hot) -# define __hot __attribute__((hot)) __optimize("O3") -# else -# define __hot __optimize("O3") -# endif -# else -# define __hot -# endif -#endif /* __hot */ - -#ifndef __cold -# if defined(__OPTIMIZE__) -# if defined(__e2k__) -# define __cold __attribute__((cold)) __optimize(1) -# elif defined(__clang__) && !__has_attribute(cold) - /* just put infrequently used functions in separate section */ -# define __cold __attribute__((section("text.unlikely"))) __optimize("Os") -# elif defined(__GNUC__) || __has_attribute(cold) -# define __cold __attribute__((cold)) __optimize("Os") -# else -# define __cold __optimize("Os") -# endif -# else -# define __cold -# endif -#endif /* __cold */ - -#ifndef __flatten -# if defined(__OPTIMIZE__) && (defined(__GNUC__) || __has_attribute(flatten)) -# define __flatten __attribute__((flatten)) -# else -# define __flatten -# endif -#endif /* __flatten */ - -#ifndef likely -# if defined(__GNUC__) || defined(__clang__) -# define likely(cond) __builtin_expect(!!(cond), 1) -# else -# define likely(x) (x) -# endif -#endif /* likely */ - -#ifndef unlikely -# if defined(__GNUC__) || defined(__clang__) -# define unlikely(cond) __builtin_expect(!!(cond), 0) -# else -# define unlikely(x) (x) -# endif -#endif /* unlikely */ - -/* Wrapper around __func__, which is a C99 feature */ -#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L -# define mdbx_func_ __func__ -#elif (defined(__GNUC__) && __GNUC__ >= 2) || defined(__clang__) || defined(_MSC_VER) -# define mdbx_func_ __FUNCTION__ -#else -# define mdbx_func_ "<mdbx_unknown>" -#endif - -/*----------------------------------------------------------------------------*/ - -#if defined(USE_VALGRIND) -# include <valgrind/memcheck.h> -# ifndef VALGRIND_DISABLE_ADDR_ERROR_REPORTING_IN_RANGE - /* LY: available since Valgrind 3.10 */ -# define VALGRIND_DISABLE_ADDR_ERROR_REPORTING_IN_RANGE(a,s) -# define VALGRIND_ENABLE_ADDR_ERROR_REPORTING_IN_RANGE(a,s) -# endif -#elif !defined(RUNNING_ON_VALGRIND) -# define VALGRIND_CREATE_MEMPOOL(h,r,z) -# define VALGRIND_DESTROY_MEMPOOL(h) -# define VALGRIND_MEMPOOL_TRIM(h,a,s) -# define VALGRIND_MEMPOOL_ALLOC(h,a,s) -# define VALGRIND_MEMPOOL_FREE(h,a) -# define VALGRIND_MEMPOOL_CHANGE(h,a,b,s) -# define VALGRIND_MAKE_MEM_NOACCESS(a,s) -# define VALGRIND_MAKE_MEM_DEFINED(a,s) -# define VALGRIND_MAKE_MEM_UNDEFINED(a,s) -# define VALGRIND_DISABLE_ADDR_ERROR_REPORTING_IN_RANGE(a,s) -# define VALGRIND_ENABLE_ADDR_ERROR_REPORTING_IN_RANGE(a,s) -# define VALGRIND_CHECK_MEM_IS_ADDRESSABLE(a,s) (0) -# define VALGRIND_CHECK_MEM_IS_DEFINED(a,s) (0) -# define RUNNING_ON_VALGRIND (0) -#endif /* USE_VALGRIND */ - -#ifdef __SANITIZE_ADDRESS__ -# include <sanitizer/asan_interface.h> -#elif !defined(ASAN_POISON_MEMORY_REGION) -# define ASAN_POISON_MEMORY_REGION(addr, size) \ - ((void)(addr), (void)(size)) -# define ASAN_UNPOISON_MEMORY_REGION(addr, size) \ - ((void)(addr), (void)(size)) -#endif /* __SANITIZE_ADDRESS__ */ - -/*----------------------------------------------------------------------------*/ - -#ifndef ARRAY_LENGTH -# ifdef __cplusplus - template <typename T, size_t N> - char (&__ArraySizeHelper(T (&array)[N]))[N]; -# define ARRAY_LENGTH(array) (sizeof(::__ArraySizeHelper(array))) -# else -# define ARRAY_LENGTH(array) (sizeof(array) / sizeof(array[0])) -# endif -#endif /* ARRAY_LENGTH */ - -#ifndef ARRAY_END -# define ARRAY_END(array) (&array[ARRAY_LENGTH(array)]) -#endif /* ARRAY_END */ - -#ifndef STRINGIFY -# define STRINGIFY_HELPER(x) #x -# define STRINGIFY(x) STRINGIFY_HELPER(x) -#endif /* STRINGIFY */ - -#ifndef offsetof -# define offsetof(type, member) __builtin_offsetof(type, member) -#endif /* offsetof */ - -#ifndef container_of -# define container_of(ptr, type, member) \ - ((type *)((char *)(ptr) - offsetof(type, member))) -#endif /* container_of */ - -#define MDBX_TETRAD(a, b, c, d) \ - ((uint32_t)(a) << 24 | (uint32_t)(b) << 16 | (uint32_t)(c) << 8 | (d)) - -#define MDBX_STRING_TETRAD(str) MDBX_TETRAD(str[0], str[1], str[2], str[3]) - -#define FIXME "FIXME: " __FILE__ ", " STRINGIFY(__LINE__) - -#ifndef STATIC_ASSERT_MSG -# if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) \ - || __has_feature(c_static_assert) -# define STATIC_ASSERT_MSG(expr, msg) _Static_assert(expr, msg) -# elif defined(static_assert) -# define STATIC_ASSERT_MSG(expr, msg) static_assert(expr, msg) -# elif defined(_MSC_VER) -# include <crtdbg.h> -# define STATIC_ASSERT_MSG(expr, msg) _STATIC_ASSERT(expr) -# else -# define STATIC_ASSERT_MSG(expr, msg) switch (0) {case 0:case (expr):;} -# endif -#endif /* STATIC_ASSERT */ - -#ifndef STATIC_ASSERT -# define STATIC_ASSERT(expr) STATIC_ASSERT_MSG(expr, #expr) -#endif - -/* *INDENT-ON* */ -/* clang-format on */ diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/lck-posix.c b/plugins/Dbx_mdbx/src/libmdbx/src/lck-posix.c deleted file mode 100644 index 869b98c054..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/lck-posix.c +++ /dev/null @@ -1,330 +0,0 @@ -/* - * Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#include "./bits.h" - -/* Some platforms define the EOWNERDEAD error code - * even though they don't support Robust Mutexes. - * Compile with -DMDBX_USE_ROBUST=0. */ -#ifndef MDBX_USE_ROBUST -/* Howard Chu: Android currently lacks Robust Mutex support */ -#if defined(EOWNERDEAD) && \ - !defined(ANDROID) /* LY: glibc before 2.10 has a troubles with Robust \ - Mutex too. */ \ - && __GLIBC_PREREQ(2, 10) -#define MDBX_USE_ROBUST 1 -#else -#define MDBX_USE_ROBUST 0 -#endif -#endif /* MDBX_USE_ROBUST */ - -/*----------------------------------------------------------------------------*/ -/* rthc */ - -static __cold __attribute__((constructor)) void mdbx_global_constructor(void) { - mdbx_rthc_global_init(); -} - -static __cold __attribute__((destructor)) void mdbx_global_destructor(void) { - mdbx_rthc_global_dtor(); -} - -/*----------------------------------------------------------------------------*/ -/* lck */ - -#ifndef OFF_T_MAX -#define OFF_T_MAX (sizeof(off_t) > 4 ? INT64_MAX : INT32_MAX) -#endif -#define LCK_WHOLE OFF_T_MAX - -static int mdbx_lck_op(mdbx_filehandle_t fd, int op, int lck, off_t offset, - off_t len) { - for (;;) { - int rc; - struct flock lock_op; - memset(&lock_op, 0, sizeof(lock_op)); - lock_op.l_type = lck; - lock_op.l_whence = SEEK_SET; - lock_op.l_start = offset; - lock_op.l_len = len; - if ((rc = fcntl(fd, op, &lock_op)) == 0) { - if (op == F_GETLK && lock_op.l_type != F_UNLCK) - rc = -lock_op.l_pid; - } else if ((rc = errno) == EINTR) { - continue; - } - return rc; - } -} - -static __inline int mdbx_lck_exclusive(int lfd) { - assert(lfd != INVALID_HANDLE_VALUE); - if (flock(lfd, LOCK_EX | LOCK_NB)) - return errno; - return mdbx_lck_op(lfd, F_SETLK, F_WRLCK, 0, 1); -} - -static __inline int mdbx_lck_shared(int lfd) { - assert(lfd != INVALID_HANDLE_VALUE); - while (flock(lfd, LOCK_SH)) { - int rc = errno; - if (rc != EINTR) - return rc; - } - return mdbx_lck_op(lfd, F_SETLKW, F_RDLCK, 0, 1); -} - -int mdbx_lck_downgrade(MDBX_env *env, bool complete) { - assert(env->me_lfd != INVALID_HANDLE_VALUE); - return complete ? mdbx_lck_shared(env->me_lfd) : MDBX_SUCCESS; -} - -int mdbx_lck_upgrade(MDBX_env *env) { return mdbx_lck_exclusive(env->me_lfd); } - -int mdbx_rpid_set(MDBX_env *env) { - assert(env->me_lfd != INVALID_HANDLE_VALUE); - return mdbx_lck_op(env->me_lfd, F_SETLK, F_WRLCK, env->me_pid, 1); -} - -int mdbx_rpid_clear(MDBX_env *env) { - assert(env->me_lfd != INVALID_HANDLE_VALUE); - return mdbx_lck_op(env->me_lfd, F_SETLKW, F_UNLCK, env->me_pid, 1); -} - -/* Checks reader by pid. - * - * Returns: - * MDBX_RESULT_TRUE, if pid is live (unable to acquire lock) - * MDBX_RESULT_FALSE, if pid is dead (lock acquired) - * or otherwise the errcode. */ -int mdbx_rpid_check(MDBX_env *env, mdbx_pid_t pid) { - assert(env->me_lfd != INVALID_HANDLE_VALUE); - int rc = mdbx_lck_op(env->me_lfd, F_GETLK, F_WRLCK, pid, 1); - if (rc == 0) - return MDBX_RESULT_FALSE; - if (rc < 0 && -rc == pid) - return MDBX_RESULT_TRUE; - return rc; -} - -/*---------------------------------------------------------------------------*/ - -static int mdbx_mutex_failed(MDBX_env *env, pthread_mutex_t *mutex, int rc); - -int __cold mdbx_lck_init(MDBX_env *env) { - pthread_mutexattr_t ma; - int rc = pthread_mutexattr_init(&ma); - if (rc) - return rc; - - rc = pthread_mutexattr_setpshared(&ma, PTHREAD_PROCESS_SHARED); - if (rc) - goto bailout; - -#if MDBX_USE_ROBUST -#if __GLIBC_PREREQ(2, 12) - rc = pthread_mutexattr_setrobust(&ma, PTHREAD_MUTEX_ROBUST); -#else - rc = pthread_mutexattr_setrobust_np(&ma, PTHREAD_MUTEX_ROBUST_NP); -#endif - if (rc) - goto bailout; -#endif /* MDBX_USE_ROBUST */ - -#if _POSIX_C_SOURCE >= 199506L - rc = pthread_mutexattr_setprotocol(&ma, PTHREAD_PRIO_INHERIT); - if (rc == ENOTSUP) - rc = pthread_mutexattr_setprotocol(&ma, PTHREAD_PRIO_NONE); - if (rc) - goto bailout; -#endif /* PTHREAD_PRIO_INHERIT */ - - rc = pthread_mutex_init(&env->me_lck->mti_rmutex, &ma); - if (rc) - goto bailout; - rc = pthread_mutex_init(&env->me_lck->mti_wmutex, &ma); - -bailout: - pthread_mutexattr_destroy(&ma); - return rc; -} - -void __cold mdbx_lck_destroy(MDBX_env *env) { - if (env->me_lfd != INVALID_HANDLE_VALUE) { - /* try get exclusive access */ - if (env->me_lck && mdbx_lck_exclusive(env->me_lfd) == 0) { - mdbx_info("%s: got exclusive, drown mutexes", mdbx_func_); - int rc = pthread_mutex_destroy(&env->me_lck->mti_rmutex); - if (rc == 0) - rc = pthread_mutex_destroy(&env->me_lck->mti_wmutex); - assert(rc == 0); - (void)rc; - /* file locks would be released (by kernel) - * while the me_lfd will be closed */ - } - } -} - -static int mdbx_robust_lock(MDBX_env *env, pthread_mutex_t *mutex) { - int rc = pthread_mutex_lock(mutex); - if (unlikely(rc != 0)) - rc = mdbx_mutex_failed(env, mutex, rc); - return rc; -} - -static int mdbx_robust_trylock(MDBX_env *env, pthread_mutex_t *mutex) { - int rc = pthread_mutex_trylock(mutex); - if (unlikely(rc != 0 && rc != EBUSY)) - rc = mdbx_mutex_failed(env, mutex, rc); - return (rc != EBUSY) ? rc : MDBX_BUSY; -} - -static int mdbx_robust_unlock(MDBX_env *env, pthread_mutex_t *mutex) { - int rc = pthread_mutex_unlock(mutex); - if (unlikely(rc != 0)) - rc = mdbx_mutex_failed(env, mutex, rc); - return rc; -} - -int mdbx_rdt_lock(MDBX_env *env) { - mdbx_trace(">>"); - int rc = mdbx_robust_lock(env, &env->me_lck->mti_rmutex); - mdbx_trace("<< rc %d", rc); - return rc; -} - -void mdbx_rdt_unlock(MDBX_env *env) { - mdbx_trace(">>"); - int rc = mdbx_robust_unlock(env, &env->me_lck->mti_rmutex); - mdbx_trace("<< rc %d", rc); - if (unlikely(MDBX_IS_ERROR(rc))) - mdbx_panic("%s() failed: errcode %d\n", mdbx_func_, rc); -} - -int mdbx_txn_lock(MDBX_env *env, bool dontwait) { - mdbx_trace(">>"); - int rc = dontwait ? mdbx_robust_trylock(env, env->me_wmutex) - : mdbx_robust_lock(env, env->me_wmutex); - mdbx_trace("<< rc %d", rc); - return MDBX_IS_ERROR(rc) ? rc : MDBX_SUCCESS; -} - -void mdbx_txn_unlock(MDBX_env *env) { - mdbx_trace(">>"); - int rc = mdbx_robust_unlock(env, env->me_wmutex); - mdbx_trace("<< rc %d", rc); - if (unlikely(MDBX_IS_ERROR(rc))) - mdbx_panic("%s() failed: errcode %d\n", mdbx_func_, rc); -} - -static int __cold internal_seize_lck(int lfd) { - assert(lfd != INVALID_HANDLE_VALUE); - - /* try exclusive access */ - int rc = mdbx_lck_exclusive(lfd); - if (rc == 0) - /* got exclusive */ - return MDBX_RESULT_TRUE; - if (rc == EAGAIN || rc == EACCES || rc == EBUSY || rc == EWOULDBLOCK) { - /* get shared access */ - rc = mdbx_lck_shared(lfd); - if (rc == 0) { - /* got shared, try exclusive again */ - rc = mdbx_lck_exclusive(lfd); - if (rc == 0) - /* now got exclusive */ - return MDBX_RESULT_TRUE; - if (rc == EAGAIN || rc == EACCES || rc == EBUSY || rc == EWOULDBLOCK) - /* unable exclusive, but stay shared */ - return MDBX_RESULT_FALSE; - } - } - assert(MDBX_IS_ERROR(rc)); - return rc; -} - -int __cold mdbx_lck_seize(MDBX_env *env) { - assert(env->me_fd != INVALID_HANDLE_VALUE); - - if (env->me_lfd == INVALID_HANDLE_VALUE) { - /* LY: without-lck mode (e.g. exclusive or on read-only filesystem) */ - int rc = mdbx_lck_op(env->me_fd, F_SETLK, - (env->me_flags & MDBX_RDONLY) ? F_RDLCK : F_WRLCK, 0, - LCK_WHOLE); - if (rc != 0) { - mdbx_error("%s(%s) failed: errcode %u", mdbx_func_, "without-lck", rc); - return rc; - } - return MDBX_RESULT_TRUE; - } - - if ((env->me_flags & MDBX_RDONLY) == 0) { - /* Check that another process don't operates in without-lck mode. */ - int rc = mdbx_lck_op(env->me_fd, F_SETLK, F_WRLCK, env->me_pid, 1); - if (rc != 0) { - mdbx_error("%s(%s) failed: errcode %u", mdbx_func_, - "lock-against-without-lck", rc); - return rc; - } - } - - return internal_seize_lck(env->me_lfd); -} - -#if !__GLIBC_PREREQ(2, 12) && !defined(pthread_mutex_consistent) -#define pthread_mutex_consistent(mutex) pthread_mutex_consistent_np(mutex) -#endif - -static int __cold mdbx_mutex_failed(MDBX_env *env, pthread_mutex_t *mutex, - int rc) { -#if MDBX_USE_ROBUST - if (rc == EOWNERDEAD) { - /* We own the mutex. Clean up after dead previous owner. */ - - int rlocked = (env->me_lck && mutex == &env->me_lck->mti_rmutex); - rc = MDBX_SUCCESS; - if (!rlocked) { - if (unlikely(env->me_txn)) { - /* env is hosed if the dead thread was ours */ - env->me_flags |= MDBX_FATAL_ERROR; - env->me_txn = NULL; - rc = MDBX_PANIC; - } - } - mdbx_notice("%cmutex owner died, %s", (rlocked ? 'r' : 'w'), - (rc ? "this process' env is hosed" : "recovering")); - - int check_rc = mdbx_reader_check0(env, rlocked, NULL); - check_rc = (check_rc == MDBX_SUCCESS) ? MDBX_RESULT_TRUE : check_rc; - - int mreco_rc = pthread_mutex_consistent(mutex); - check_rc = (mreco_rc == 0) ? check_rc : mreco_rc; - - if (unlikely(mreco_rc)) - mdbx_error("mutex recovery failed, %s", mdbx_strerror(mreco_rc)); - - rc = (rc == MDBX_SUCCESS) ? check_rc : rc; - if (MDBX_IS_ERROR(rc)) - pthread_mutex_unlock(mutex); - return rc; - } -#endif /* MDBX_USE_ROBUST */ - - mdbx_error("mutex (un)lock failed, %s", mdbx_strerror(rc)); - if (rc != EDEADLK) { - env->me_flags |= MDBX_FATAL_ERROR; - rc = MDBX_PANIC; - } - return rc; -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/lck-windows.c b/plugins/Dbx_mdbx/src/libmdbx/src/lck-windows.c deleted file mode 100644 index ab3fae57f8..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/lck-windows.c +++ /dev/null @@ -1,713 +0,0 @@ -/* - * Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#include "./bits.h" - -/* PREAMBLE FOR WINDOWS: - * - * We are not concerned for performance here. - * If you are running Windows a performance could NOT be the goal. - * Otherwise please use Linux. - * - * Regards, - * LY - */ - -static void mdbx_winnt_import(void); - -#if !MDBX_CONFIG_MANUAL_TLS_CALLBACK -static -#endif /* !MDBX_CONFIG_MANUAL_TLS_CALLBACK */ - void NTAPI - mdbx_dll_callback(PVOID module, DWORD reason, PVOID reserved) { - (void)reserved; - switch (reason) { - case DLL_PROCESS_ATTACH: - mdbx_winnt_import(); - mdbx_rthc_global_init(); - break; - case DLL_PROCESS_DETACH: - mdbx_rthc_global_dtor(); - break; - - case DLL_THREAD_ATTACH: - break; - case DLL_THREAD_DETACH: - mdbx_rthc_thread_dtor(module); - break; - } -} - -#if !MDBX_CONFIG_MANUAL_TLS_CALLBACK -/* *INDENT-OFF* */ -/* clang-format off */ -#if defined(_MSC_VER) -# pragma const_seg(push) -# pragma data_seg(push) - -# ifdef _WIN64 - /* kick a linker to create the TLS directory if not already done */ -# pragma comment(linker, "/INCLUDE:_tls_used") - /* Force some symbol references. */ -# pragma comment(linker, "/INCLUDE:mdbx_tls_anchor") - /* specific const-segment for WIN64 */ -# pragma const_seg(".CRT$XLB") - const -# else - /* kick a linker to create the TLS directory if not already done */ -# pragma comment(linker, "/INCLUDE:__tls_used") - /* Force some symbol references. */ -# pragma comment(linker, "/INCLUDE:_mdbx_tls_anchor") - /* specific data-segment for WIN32 */ -# pragma data_seg(".CRT$XLB") -# endif - - __declspec(allocate(".CRT$XLB")) PIMAGE_TLS_CALLBACK mdbx_tls_anchor = mdbx_dll_callback; -# pragma data_seg(pop) -# pragma const_seg(pop) - -#elif defined(__GNUC__) -# ifdef _WIN64 - const -# endif - PIMAGE_TLS_CALLBACK mdbx_tls_anchor __attribute__((section(".CRT$XLB"), used)) = mdbx_dll_callback; -#else -# error FIXME -#endif -/* *INDENT-ON* */ -/* clang-format on */ -#endif /* !MDBX_CONFIG_MANUAL_TLS_CALLBACK */ - -/*----------------------------------------------------------------------------*/ - -#define LCK_SHARED 0 -#define LCK_EXCLUSIVE LOCKFILE_EXCLUSIVE_LOCK -#define LCK_WAITFOR 0 -#define LCK_DONTWAIT LOCKFILE_FAIL_IMMEDIATELY - -static __inline BOOL flock(mdbx_filehandle_t fd, DWORD flags, uint64_t offset, - size_t bytes) { - OVERLAPPED ov; - ov.hEvent = 0; - ov.Offset = (DWORD)offset; - ov.OffsetHigh = HIGH_DWORD(offset); - return LockFileEx(fd, flags, 0, (DWORD)bytes, HIGH_DWORD(bytes), &ov); -} - -static __inline BOOL funlock(mdbx_filehandle_t fd, uint64_t offset, - size_t bytes) { - return UnlockFile(fd, (DWORD)offset, HIGH_DWORD(offset), (DWORD)bytes, - HIGH_DWORD(bytes)); -} - -/*----------------------------------------------------------------------------*/ -/* global `write` lock for write-txt processing, - * exclusive locking both meta-pages) */ - -#define LCK_MAXLEN (1u + (size_t)(MAXSSIZE_T)) -#define LCK_META_OFFSET 0 -#define LCK_META_LEN 0x10000u -#define LCK_BODY_OFFSET LCK_META_LEN -#define LCK_BODY_LEN (LCK_MAXLEN - LCK_BODY_OFFSET) -#define LCK_META LCK_META_OFFSET, LCK_META_LEN -#define LCK_BODY LCK_BODY_OFFSET, LCK_BODY_LEN -#define LCK_WHOLE 0, LCK_MAXLEN - -int mdbx_txn_lock(MDBX_env *env, bool dontwait) { - if (dontwait) { - if (!TryEnterCriticalSection(&env->me_windowsbug_lock)) - return MDBX_BUSY; - } else { - EnterCriticalSection(&env->me_windowsbug_lock); - } - - if ((env->me_flags & MDBX_EXCLUSIVE) || - flock(env->me_fd, - dontwait ? (LCK_EXCLUSIVE | LCK_DONTWAIT) - : (LCK_EXCLUSIVE | LCK_WAITFOR), - LCK_BODY)) - return MDBX_SUCCESS; - int rc = GetLastError(); - LeaveCriticalSection(&env->me_windowsbug_lock); - return (!dontwait || rc != ERROR_LOCK_VIOLATION) ? rc : MDBX_BUSY; -} - -void mdbx_txn_unlock(MDBX_env *env) { - int rc = - (env->me_flags & MDBX_EXCLUSIVE) ? TRUE : funlock(env->me_fd, LCK_BODY); - LeaveCriticalSection(&env->me_windowsbug_lock); - if (!rc) - mdbx_panic("%s failed: errcode %u", mdbx_func_, GetLastError()); -} - -/*----------------------------------------------------------------------------*/ -/* global `read` lock for readers registration, - * exclusive locking `mti_numreaders` (second) cacheline */ - -#define LCK_LO_OFFSET 0 -#define LCK_LO_LEN offsetof(MDBX_lockinfo, mti_numreaders) -#define LCK_UP_OFFSET LCK_LO_LEN -#define LCK_UP_LEN (MDBX_LOCKINFO_WHOLE_SIZE - LCK_UP_OFFSET) -#define LCK_LOWER LCK_LO_OFFSET, LCK_LO_LEN -#define LCK_UPPER LCK_UP_OFFSET, LCK_UP_LEN - -int mdbx_rdt_lock(MDBX_env *env) { - mdbx_srwlock_AcquireShared(&env->me_remap_guard); - if (env->me_lfd == INVALID_HANDLE_VALUE) - return MDBX_SUCCESS; /* readonly database in readonly filesystem */ - - /* transite from S-? (used) to S-E (locked), e.g. exclusive lock upper-part */ - if ((env->me_flags & MDBX_EXCLUSIVE) || - flock(env->me_lfd, LCK_EXCLUSIVE | LCK_WAITFOR, LCK_UPPER)) - return MDBX_SUCCESS; - - int rc = GetLastError(); - mdbx_srwlock_ReleaseShared(&env->me_remap_guard); - return rc; -} - -void mdbx_rdt_unlock(MDBX_env *env) { - if (env->me_lfd != INVALID_HANDLE_VALUE) { - /* transite from S-E (locked) to S-? (used), e.g. unlock upper-part */ - if ((env->me_flags & MDBX_EXCLUSIVE) == 0 && - !funlock(env->me_lfd, LCK_UPPER)) - mdbx_panic("%s failed: errcode %u", mdbx_func_, GetLastError()); - } - mdbx_srwlock_ReleaseShared(&env->me_remap_guard); -} - -static int suspend_and_append(mdbx_handle_array_t **array, - const DWORD ThreadId) { - const unsigned limit = (*array)->limit; - if ((*array)->count == limit) { - void *ptr = realloc((limit > ARRAY_LENGTH((*array)->handles)) - ? *array - : /* don't free initial array on the stack */ NULL, - sizeof(mdbx_handle_array_t) + - sizeof(HANDLE) * - (limit * 2 - ARRAY_LENGTH((*array)->handles))); - if (!ptr) - return MDBX_ENOMEM; - (*array) = (mdbx_handle_array_t *)ptr; - (*array)->limit = limit * 2; - } - - HANDLE hThread = OpenThread(THREAD_SUSPEND_RESUME, FALSE, ThreadId); - if (hThread == NULL) - return GetLastError(); - if (SuspendThread(hThread) == -1) { - CloseHandle(hThread); - return GetLastError(); - } - - (*array)->handles[(*array)->count++] = hThread; - return MDBX_SUCCESS; -} - -int mdbx_suspend_threads_before_remap(MDBX_env *env, - mdbx_handle_array_t **array) { - const mdbx_pid_t CurrentTid = GetCurrentThreadId(); - int rc; - if (env->me_lck) { - /* Scan LCK for threads of the current process */ - const MDBX_reader *const begin = env->me_lck->mti_readers; - const MDBX_reader *const end = begin + env->me_lck->mti_numreaders; - const mdbx_tid_t WriteTxnOwner = env->me_txn0 ? env->me_txn0->mt_owner : 0; - for (const MDBX_reader *reader = begin; reader < end; ++reader) { - if (reader->mr_pid != env->me_pid || !reader->mr_tid) { - skip_lck: - continue; - } - if (reader->mr_tid == CurrentTid || reader->mr_tid == WriteTxnOwner) - goto skip_lck; - if (env->me_flags & MDBX_NOTLS) { - /* Skip duplicates in no-tls mode */ - for (const MDBX_reader *scan = reader; --scan >= begin;) - if (scan->mr_tid == reader->mr_tid) - goto skip_lck; - } - - rc = suspend_and_append(array, reader->mr_tid); - if (rc != MDBX_SUCCESS) { - bailout_lck: - (void)mdbx_resume_threads_after_remap(*array); - return rc; - } - } - if (WriteTxnOwner && WriteTxnOwner != CurrentTid) { - rc = suspend_and_append(array, WriteTxnOwner); - if (rc != MDBX_SUCCESS) - goto bailout_lck; - } - } else { - /* Without LCK (i.e. read-only mode). - * Walk thougth a snapshot of all running threads */ - mdbx_assert(env, env->me_txn0 == NULL); - const HANDLE hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD, 0); - if (hSnapshot == INVALID_HANDLE_VALUE) - return GetLastError(); - - THREADENTRY32 entry; - entry.dwSize = sizeof(THREADENTRY32); - - if (!Thread32First(hSnapshot, &entry)) { - rc = GetLastError(); - bailout_toolhelp: - CloseHandle(hSnapshot); - (void)mdbx_resume_threads_after_remap(*array); - return rc; - } - - do { - if (entry.th32OwnerProcessID != env->me_pid || - entry.th32ThreadID == CurrentTid) - continue; - - rc = suspend_and_append(array, entry.th32ThreadID); - if (rc != MDBX_SUCCESS) - goto bailout_toolhelp; - - } while (Thread32Next(hSnapshot, &entry)); - - rc = GetLastError(); - if (rc != ERROR_NO_MORE_FILES) - goto bailout_toolhelp; - CloseHandle(hSnapshot); - } - - return MDBX_SUCCESS; -} - -int mdbx_resume_threads_after_remap(mdbx_handle_array_t *array) { - int rc = MDBX_SUCCESS; - for (unsigned i = 0; i < array->count; ++i) { - if (ResumeThread(array->handles[i]) == -1) - rc = GetLastError(); - CloseHandle(array->handles[i]); - } - return rc; -} - -/*----------------------------------------------------------------------------*/ -/* global `initial` lock for lockfile initialization, - * exclusive/shared locking first cacheline */ - -/* FIXME: locking schema/algo descritpion. - ?-? = free - S-? = used - E-? = exclusive-read - ?-S - ?-E = middle - S-S - S-E = locked - E-S - E-E = exclusive-write -*/ - -int mdbx_lck_init(MDBX_env *env) { - (void)env; - return MDBX_SUCCESS; -} - -/* Seize state as 'exclusive-write' (E-E and returns MDBX_RESULT_TRUE) - * or as 'used' (S-? and returns MDBX_RESULT_FALSE), otherwise returns an error - */ -static int internal_seize_lck(HANDLE lfd) { - int rc; - assert(lfd != INVALID_HANDLE_VALUE); - - /* 1) now on ?-? (free), get ?-E (middle) */ - mdbx_jitter4testing(false); - if (!flock(lfd, LCK_EXCLUSIVE | LCK_WAITFOR, LCK_UPPER)) { - rc = GetLastError() /* 2) something went wrong, give up */; - mdbx_error("%s(%s) failed: errcode %u", mdbx_func_, - "?-?(free) >> ?-E(middle)", rc); - return rc; - } - - /* 3) now on ?-E (middle), try E-E (exclusive-write) */ - mdbx_jitter4testing(false); - if (flock(lfd, LCK_EXCLUSIVE | LCK_DONTWAIT, LCK_LOWER)) - return MDBX_RESULT_TRUE /* 4) got E-E (exclusive-write), done */; - - /* 5) still on ?-E (middle) */ - rc = GetLastError(); - mdbx_jitter4testing(false); - if (rc != ERROR_SHARING_VIOLATION && rc != ERROR_LOCK_VIOLATION) { - /* 6) something went wrong, give up */ - if (!funlock(lfd, LCK_UPPER)) - mdbx_panic("%s(%s) failed: errcode %u", mdbx_func_, - "?-E(middle) >> ?-?(free)", GetLastError()); - return rc; - } - - /* 7) still on ?-E (middle), try S-E (locked) */ - mdbx_jitter4testing(false); - rc = flock(lfd, LCK_SHARED | LCK_DONTWAIT, LCK_LOWER) ? MDBX_RESULT_FALSE - : GetLastError(); - - mdbx_jitter4testing(false); - if (rc != MDBX_RESULT_FALSE) - mdbx_error("%s(%s) failed: errcode %u", mdbx_func_, - "?-E(middle) >> S-E(locked)", rc); - - /* 8) now on S-E (locked) or still on ?-E (middle), - * transite to S-? (used) or ?-? (free) */ - if (!funlock(lfd, LCK_UPPER)) - mdbx_panic("%s(%s) failed: errcode %u", mdbx_func_, - "X-E(locked/middle) >> X-?(used/free)", GetLastError()); - - /* 9) now on S-? (used, DONE) or ?-? (free, FAILURE) */ - return rc; -} - -int mdbx_lck_seize(MDBX_env *env) { - int rc; - - assert(env->me_fd != INVALID_HANDLE_VALUE); - if (env->me_flags & MDBX_EXCLUSIVE) - return MDBX_RESULT_TRUE /* files were must be opened non-shareable */; - - if (env->me_lfd == INVALID_HANDLE_VALUE) { - /* LY: without-lck mode (e.g. on read-only filesystem) */ - mdbx_jitter4testing(false); - if (!flock(env->me_fd, LCK_SHARED | LCK_DONTWAIT, LCK_WHOLE)) { - rc = GetLastError(); - mdbx_error("%s(%s) failed: errcode %u", mdbx_func_, "without-lck", rc); - return rc; - } - return MDBX_RESULT_FALSE; - } - - rc = internal_seize_lck(env->me_lfd); - mdbx_jitter4testing(false); - if (rc == MDBX_RESULT_TRUE && (env->me_flags & MDBX_RDONLY) == 0) { - /* Check that another process don't operates in without-lck mode. - * Doing such check by exclusive locking the body-part of db. Should be - * noted: - * - we need an exclusive lock for do so; - * - we can't lock meta-pages, otherwise other process could get an error - * while opening db in valid (non-conflict) mode. */ - if (!flock(env->me_fd, LCK_EXCLUSIVE | LCK_DONTWAIT, LCK_BODY)) { - rc = GetLastError(); - mdbx_error("%s(%s) failed: errcode %u", mdbx_func_, - "lock-against-without-lck", rc); - mdbx_jitter4testing(false); - mdbx_lck_destroy(env); - } else { - mdbx_jitter4testing(false); - if (!funlock(env->me_fd, LCK_BODY)) - mdbx_panic("%s(%s) failed: errcode %u", mdbx_func_, - "unlock-against-without-lck", GetLastError()); - } - } - - return rc; -} - -int mdbx_lck_downgrade(MDBX_env *env, bool complete) { - /* Transite from exclusive state (E-?) to used (S-?) */ - assert(env->me_fd != INVALID_HANDLE_VALUE); - assert(env->me_lfd != INVALID_HANDLE_VALUE); - - if (env->me_flags & MDBX_EXCLUSIVE) - return MDBX_SUCCESS /* files were must be opened non-shareable */; - - /* 1) must be at E-E (exclusive-write) */ - if (!complete) { - /* transite from E-E to E_? (exclusive-read) */ - if (!funlock(env->me_lfd, LCK_UPPER)) - mdbx_panic("%s(%s) failed: errcode %u", mdbx_func_, - "E-E(exclusive-write) >> E-?(exclusive-read)", GetLastError()); - return MDBX_SUCCESS /* 2) now at E-? (exclusive-read), done */; - } - - /* 3) now at E-E (exclusive-write), transite to ?_E (middle) */ - if (!funlock(env->me_lfd, LCK_LOWER)) - mdbx_panic("%s(%s) failed: errcode %u", mdbx_func_, - "E-E(exclusive-write) >> ?-E(middle)", GetLastError()); - - /* 4) now at ?-E (middle), transite to S-E (locked) */ - if (!flock(env->me_lfd, LCK_SHARED | LCK_DONTWAIT, LCK_LOWER)) { - int rc = GetLastError() /* 5) something went wrong, give up */; - mdbx_error("%s(%s) failed: errcode %u", mdbx_func_, - "?-E(middle) >> S-E(locked)", rc); - return rc; - } - - /* 6) got S-E (locked), continue transition to S-? (used) */ - if (!funlock(env->me_lfd, LCK_UPPER)) - mdbx_panic("%s(%s) failed: errcode %u", mdbx_func_, - "S-E(locked) >> S-?(used)", GetLastError()); - - return MDBX_SUCCESS /* 7) now at S-? (used), done */; -} - -int mdbx_lck_upgrade(MDBX_env *env) { - /* Transite from locked state (S-E) to exclusive-write (E-E) */ - assert(env->me_fd != INVALID_HANDLE_VALUE); - assert(env->me_lfd != INVALID_HANDLE_VALUE); - assert((env->me_flags & MDBX_EXCLUSIVE) == 0); - - if (env->me_flags & MDBX_EXCLUSIVE) - return MDBX_RESULT_TRUE /* files were must be opened non-shareable */; - - /* 1) must be at S-E (locked), transite to ?_E (middle) */ - if (!funlock(env->me_lfd, LCK_LOWER)) - mdbx_panic("%s(%s) failed: errcode %u", mdbx_func_, - "S-E(locked) >> ?-E(middle)", GetLastError()); - - /* 3) now on ?-E (middle), try E-E (exclusive-write) */ - mdbx_jitter4testing(false); - if (flock(env->me_lfd, LCK_EXCLUSIVE | LCK_DONTWAIT, LCK_LOWER)) - return MDBX_RESULT_TRUE; /* 4) got E-E (exclusive-write), done */ - - /* 5) still on ?-E (middle) */ - int rc = GetLastError(); - mdbx_jitter4testing(false); - if (rc != ERROR_SHARING_VIOLATION && rc != ERROR_LOCK_VIOLATION) { - /* 6) something went wrong, report but continue */ - mdbx_error("%s(%s) failed: errcode %u", mdbx_func_, - "?-E(middle) >> E-E(exclusive-write)", rc); - } - - /* 7) still on ?-E (middle), try restore S-E (locked) */ - mdbx_jitter4testing(false); - rc = flock(env->me_lfd, LCK_SHARED | LCK_DONTWAIT, LCK_LOWER) - ? MDBX_RESULT_FALSE - : GetLastError(); - - mdbx_jitter4testing(false); - if (rc != MDBX_RESULT_FALSE) { - mdbx_fatal("%s(%s) failed: errcode %u", mdbx_func_, - "?-E(middle) >> S-E(locked)", rc); - return rc; - } - - /* 8) now on S-E (locked) */ - return MDBX_RESULT_FALSE; -} - -void mdbx_lck_destroy(MDBX_env *env) { - int rc; - - if (env->me_lfd != INVALID_HANDLE_VALUE) { - /* double `unlock` for robustly remove overlapped shared/exclusive locks */ - while (funlock(env->me_lfd, LCK_LOWER)) - ; - rc = GetLastError(); - assert(rc == ERROR_NOT_LOCKED); - (void)rc; - SetLastError(ERROR_SUCCESS); - - while (funlock(env->me_lfd, LCK_UPPER)) - ; - rc = GetLastError(); - assert(rc == ERROR_NOT_LOCKED); - (void)rc; - SetLastError(ERROR_SUCCESS); - } - - if (env->me_fd != INVALID_HANDLE_VALUE) { - /* explicitly unlock to avoid latency for other processes (windows kernel - * releases such locks via deferred queues) */ - while (funlock(env->me_fd, LCK_BODY)) - ; - rc = GetLastError(); - assert(rc == ERROR_NOT_LOCKED); - (void)rc; - SetLastError(ERROR_SUCCESS); - - while (funlock(env->me_fd, LCK_META)) - ; - rc = GetLastError(); - assert(rc == ERROR_NOT_LOCKED); - (void)rc; - SetLastError(ERROR_SUCCESS); - - while (funlock(env->me_fd, LCK_WHOLE)) - ; - rc = GetLastError(); - assert(rc == ERROR_NOT_LOCKED); - (void)rc; - SetLastError(ERROR_SUCCESS); - } -} - -/*----------------------------------------------------------------------------*/ -/* reader checking (by pid) */ - -int mdbx_rpid_set(MDBX_env *env) { - (void)env; - return MDBX_SUCCESS; -} - -int mdbx_rpid_clear(MDBX_env *env) { - (void)env; - return MDBX_SUCCESS; -} - -/* Checks reader by pid. - * - * Returns: - * MDBX_RESULT_TRUE, if pid is live (unable to acquire lock) - * MDBX_RESULT_FALSE, if pid is dead (lock acquired) - * or otherwise the errcode. */ -int mdbx_rpid_check(MDBX_env *env, mdbx_pid_t pid) { - (void)env; - HANDLE hProcess = OpenProcess(SYNCHRONIZE, FALSE, pid); - int rc; - if (likely(hProcess)) { - rc = WaitForSingleObject(hProcess, 0); - if (unlikely(rc == WAIT_FAILED)) - rc = GetLastError(); - CloseHandle(hProcess); - } else { - rc = GetLastError(); - } - - switch (rc) { - case ERROR_INVALID_PARAMETER: - /* pid seem invalid */ - return MDBX_RESULT_FALSE; - case WAIT_OBJECT_0: - /* process just exited */ - return MDBX_RESULT_FALSE; - case WAIT_TIMEOUT: - /* pid running */ - return MDBX_RESULT_TRUE; - default: - /* failure */ - return rc; - } -} - -//---------------------------------------------------------------------------- -// Stub for slim read-write lock -// Copyright (C) 1995-2002 Brad Wilson - -static void WINAPI stub_srwlock_Init(MDBX_srwlock *srwl) { - srwl->readerCount = srwl->writerCount = 0; -} - -static void WINAPI stub_srwlock_AcquireShared(MDBX_srwlock *srwl) { - while (true) { - assert(srwl->writerCount >= 0 && srwl->readerCount >= 0); - - // If there's a writer already, spin without unnecessarily - // interlocking the CPUs - if (srwl->writerCount != 0) { - YieldProcessor(); - continue; - } - - // Add to the readers list - _InterlockedIncrement(&srwl->readerCount); - - // Check for writers again (we may have been pre-empted). If - // there are no writers writing or waiting, then we're done. - if (srwl->writerCount == 0) - break; - - // Remove from the readers list, spin, try again - _InterlockedDecrement(&srwl->readerCount); - YieldProcessor(); - } -} - -static void WINAPI stub_srwlock_ReleaseShared(MDBX_srwlock *srwl) { - assert(srwl->readerCount > 0); - _InterlockedDecrement(&srwl->readerCount); -} - -static void WINAPI stub_srwlock_AcquireExclusive(MDBX_srwlock *srwl) { - while (true) { - assert(srwl->writerCount >= 0 && srwl->readerCount >= 0); - - // If there's a writer already, spin without unnecessarily - // interlocking the CPUs - if (srwl->writerCount != 0) { - YieldProcessor(); - continue; - } - - // See if we can become the writer (expensive, because it inter- - // locks the CPUs, so writing should be an infrequent process) - if (_InterlockedExchange(&srwl->writerCount, 1) == 0) - break; - } - - // Now we're the writer, but there may be outstanding readers. - // Spin until there aren't any more; new readers will wait now - // that we're the writer. - while (srwl->readerCount != 0) { - assert(srwl->writerCount >= 0 && srwl->readerCount >= 0); - YieldProcessor(); - } -} - -static void WINAPI stub_srwlock_ReleaseExclusive(MDBX_srwlock *srwl) { - assert(srwl->writerCount == 1 && srwl->readerCount >= 0); - srwl->writerCount = 0; -} - -MDBX_srwlock_function mdbx_srwlock_Init, mdbx_srwlock_AcquireShared, - mdbx_srwlock_ReleaseShared, mdbx_srwlock_AcquireExclusive, - mdbx_srwlock_ReleaseExclusive; - -/*----------------------------------------------------------------------------*/ - -MDBX_GetFileInformationByHandleEx mdbx_GetFileInformationByHandleEx; -MDBX_GetVolumeInformationByHandleW mdbx_GetVolumeInformationByHandleW; -MDBX_GetFinalPathNameByHandleW mdbx_GetFinalPathNameByHandleW; -MDBX_NtFsControlFile mdbx_NtFsControlFile; - -static void mdbx_winnt_import(void) { - const HINSTANCE hKernel32dll = GetModuleHandleA("kernel32.dll"); - const MDBX_srwlock_function init = - (MDBX_srwlock_function)GetProcAddress(hKernel32dll, "InitializeSRWLock"); - if (init != NULL) { - mdbx_srwlock_Init = init; - mdbx_srwlock_AcquireShared = (MDBX_srwlock_function)GetProcAddress( - hKernel32dll, "AcquireSRWLockShared"); - mdbx_srwlock_ReleaseShared = (MDBX_srwlock_function)GetProcAddress( - hKernel32dll, "ReleaseSRWLockShared"); - mdbx_srwlock_AcquireExclusive = (MDBX_srwlock_function)GetProcAddress( - hKernel32dll, "AcquireSRWLockExclusive"); - mdbx_srwlock_ReleaseExclusive = (MDBX_srwlock_function)GetProcAddress( - hKernel32dll, "ReleaseSRWLockExclusive"); - } else { - mdbx_srwlock_Init = stub_srwlock_Init; - mdbx_srwlock_AcquireShared = stub_srwlock_AcquireShared; - mdbx_srwlock_ReleaseShared = stub_srwlock_ReleaseShared; - mdbx_srwlock_AcquireExclusive = stub_srwlock_AcquireExclusive; - mdbx_srwlock_ReleaseExclusive = stub_srwlock_ReleaseExclusive; - } - - mdbx_GetFileInformationByHandleEx = - (MDBX_GetFileInformationByHandleEx)GetProcAddress( - hKernel32dll, "GetFileInformationByHandleEx"); - - mdbx_GetVolumeInformationByHandleW = - (MDBX_GetVolumeInformationByHandleW)GetProcAddress( - hKernel32dll, "GetVolumeInformationByHandleW"); - - mdbx_GetFinalPathNameByHandleW = - (MDBX_GetFinalPathNameByHandleW)GetProcAddress( - hKernel32dll, "GetFinalPathNameByHandleW"); - - const HINSTANCE hNtdll = GetModuleHandleA("ntdll.dll"); - mdbx_NtFsControlFile = - (MDBX_NtFsControlFile)GetProcAddress(hNtdll, "NtFsControlFile"); -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/mdbx.c b/plugins/Dbx_mdbx/src/libmdbx/src/mdbx.c deleted file mode 100644 index ad55a98f81..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/mdbx.c +++ /dev/null @@ -1,12382 +0,0 @@ -/* - * Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * This code is derived from "LMDB engine" written by - * Howard Chu (Symas Corporation), which itself derived from btree.c - * written by Martin Hedenfalk. - * - * --- - * - * Portions Copyright 2011-2015 Howard Chu, Symas Corp. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - * - * --- - * - * Portions Copyright (c) 2009, 2010 Martin Hedenfalk <martin@bzero.se> - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ - -#include "./bits.h" - -/* LY: temporary workaround for Elbrus's memcmp() bug. */ -#if defined(__e2k__) && !__GLIBC_PREREQ(2, 24) -int __hot mdbx_e2k_memcmp_bug_workaround(const void *s1, const void *s2, - size_t n) { - if (unlikely(n > 42 - /* LY: align followed access if reasonable possible */ - && (((uintptr_t)s1) & 7) != 0 && - (((uintptr_t)s1) & 7) == (((uintptr_t)s2) & 7))) { - if (((uintptr_t)s1) & 1) { - const int diff = *(uint8_t *)s1 - *(uint8_t *)s2; - if (diff) - return diff; - s1 = (char *)s1 + 1; - s2 = (char *)s2 + 1; - n -= 1; - } - - if (((uintptr_t)s1) & 2) { - const uint16_t a = *(uint16_t *)s1; - const uint16_t b = *(uint16_t *)s2; - if (likely(a != b)) - return (__builtin_bswap16(a) > __builtin_bswap16(b)) ? 1 : -1; - s1 = (char *)s1 + 2; - s2 = (char *)s2 + 2; - n -= 2; - } - - if (((uintptr_t)s1) & 4) { - const uint32_t a = *(uint32_t *)s1; - const uint32_t b = *(uint32_t *)s2; - if (likely(a != b)) - return (__builtin_bswap32(a) > __builtin_bswap32(b)) ? 1 : -1; - s1 = (char *)s1 + 4; - s2 = (char *)s2 + 4; - n -= 4; - } - } - - while (n >= 8) { - const uint64_t a = *(uint64_t *)s1; - const uint64_t b = *(uint64_t *)s2; - if (likely(a != b)) - return (__builtin_bswap64(a) > __builtin_bswap64(b)) ? 1 : -1; - s1 = (char *)s1 + 8; - s2 = (char *)s2 + 8; - n -= 8; - } - - if (n & 4) { - const uint32_t a = *(uint32_t *)s1; - const uint32_t b = *(uint32_t *)s2; - if (likely(a != b)) - return (__builtin_bswap32(a) > __builtin_bswap32(b)) ? 1 : -1; - s1 = (char *)s1 + 4; - s2 = (char *)s2 + 4; - } - - if (n & 2) { - const uint16_t a = *(uint16_t *)s1; - const uint16_t b = *(uint16_t *)s2; - if (likely(a != b)) - return (__builtin_bswap16(a) > __builtin_bswap16(b)) ? 1 : -1; - s1 = (char *)s1 + 2; - s2 = (char *)s2 + 2; - } - - return (n & 1) ? *(uint8_t *)s1 - *(uint8_t *)s2 : 0; -} - -int __hot mdbx_e2k_strcmp_bug_workaround(const char *s1, const char *s2) { - while (true) { - int diff = *(uint8_t *)s1 - *(uint8_t *)s2; - if (likely(diff != 0) || *s1 == '\0') - return diff; - s1 += 1; - s2 += 1; - } -} - -int __hot mdbx_e2k_strncmp_bug_workaround(const char *s1, const char *s2, - size_t n) { - while (n > 0) { - int diff = *(uint8_t *)s1 - *(uint8_t *)s2; - if (likely(diff != 0) || *s1 == '\0') - return diff; - s1 += 1; - s2 += 1; - n -= 1; - } - return 0; -} - -size_t __hot mdbx_e2k_strlen_bug_workaround(const char *s) { - size_t n = 0; - while (*s) { - s += 1; - n += 1; - } - return n; -} - -size_t __hot mdbx_e2k_strnlen_bug_workaround(const char *s, size_t maxlen) { - size_t n = 0; - while (maxlen > n && *s) { - s += 1; - n += 1; - } - return n; -} -#endif /* Elbrus's memcmp() bug. */ - -/*----------------------------------------------------------------------------*/ -/* rthc (tls keys and destructors) */ - -typedef struct rthc_entry_t { - MDBX_reader *begin; - MDBX_reader *end; - mdbx_thread_key_t key; -} rthc_entry_t; - -#if MDBX_DEBUG -#define RTHC_INITIAL_LIMIT 1 -#else -#define RTHC_INITIAL_LIMIT 16 -#endif - -#if defined(_WIN32) || defined(_WIN64) -static CRITICAL_SECTION rthc_critical_section; -#else -int __cxa_thread_atexit_impl(void (*dtor)(void *), void *obj, void *dso_symbol) - __attribute__((weak)); -static pthread_mutex_t mdbx_rthc_mutex = PTHREAD_MUTEX_INITIALIZER; -static pthread_cond_t mdbx_rthc_cond = PTHREAD_COND_INITIALIZER; -static mdbx_thread_key_t mdbx_rthc_key; -static volatile uint32_t mdbx_rthc_pending; - -static void __cold mdbx_workaround_glibc_bug21031(void) { - /* Workaround for https://sourceware.org/bugzilla/show_bug.cgi?id=21031 - * - * Due race between pthread_key_delete() and __nptl_deallocate_tsd() - * The destructor(s) of thread-local-storate object(s) may be running - * in another thread(s) and be blocked or not finished yet. - * In such case we get a SEGFAULT after unload this library DSO. - * - * So just by yielding a few timeslices we give a chance - * to such destructor(s) for completion and avoids segfault. */ - sched_yield(); - sched_yield(); - sched_yield(); -} -#endif - -static unsigned rthc_count, rthc_limit; -static rthc_entry_t *rthc_table; -static rthc_entry_t rthc_table_static[RTHC_INITIAL_LIMIT]; - -static __cold void mdbx_rthc_lock(void) { -#if defined(_WIN32) || defined(_WIN64) - EnterCriticalSection(&rthc_critical_section); -#else - mdbx_ensure(nullptr, pthread_mutex_lock(&mdbx_rthc_mutex) == 0); -#endif -} - -static __cold void mdbx_rthc_unlock(void) { -#if defined(_WIN32) || defined(_WIN64) - LeaveCriticalSection(&rthc_critical_section); -#else - mdbx_ensure(nullptr, pthread_mutex_unlock(&mdbx_rthc_mutex) == 0); -#endif -} - -static __inline int mdbx_thread_key_create(mdbx_thread_key_t *key) { - int rc; -#if defined(_WIN32) || defined(_WIN64) - *key = TlsAlloc(); - rc = (*key != TLS_OUT_OF_INDEXES) ? MDBX_SUCCESS : GetLastError(); -#else - rc = pthread_key_create(key, nullptr); -#endif - mdbx_trace("&key = %p, value 0x%x, rc %d", key, (unsigned)*key, rc); - return rc; -} - -static __inline void mdbx_thread_key_delete(mdbx_thread_key_t key) { - mdbx_trace("key = 0x%x", (unsigned)key); -#if defined(_WIN32) || defined(_WIN64) - mdbx_ensure(nullptr, TlsFree(key)); -#else - mdbx_ensure(nullptr, pthread_key_delete(key) == 0); - mdbx_workaround_glibc_bug21031(); -#endif -} - -static __inline void *mdbx_thread_rthc_get(mdbx_thread_key_t key) { -#if defined(_WIN32) || defined(_WIN64) - return TlsGetValue(key); -#else - return pthread_getspecific(key); -#endif -} - -static void mdbx_thread_rthc_set(mdbx_thread_key_t key, const void *value) { -#if defined(_WIN32) || defined(_WIN64) - mdbx_ensure(nullptr, TlsSetValue(key, (void *)value)); -#else -#define MDBX_THREAD_RTHC_ZERO 0 -#define MDBX_THREAD_RTHC_REGISTERD 1 -#define MDBX_THREAD_RTHC_COUNTED 2 - static __thread uint32_t thread_registration_state; - if (value && unlikely(thread_registration_state == MDBX_THREAD_RTHC_ZERO)) { - thread_registration_state = MDBX_THREAD_RTHC_REGISTERD; - mdbx_trace("thread registered 0x%" PRIxPTR, (uintptr_t)mdbx_thread_self()); - if (&__cxa_thread_atexit_impl == nullptr || - __cxa_thread_atexit_impl(mdbx_rthc_thread_dtor, - &thread_registration_state, - (void *)&mdbx_version /* dso_anchor */)) { - mdbx_ensure(nullptr, pthread_setspecific( - mdbx_rthc_key, &thread_registration_state) == 0); - thread_registration_state = MDBX_THREAD_RTHC_COUNTED; - const unsigned count_before = mdbx_atomic_add32(&mdbx_rthc_pending, 1); - mdbx_ensure(nullptr, count_before < INT_MAX); - mdbx_trace("fallback to pthreads' tsd, key 0x%x, count %u", - (unsigned)mdbx_rthc_key, count_before); - (void)count_before; - } - } - mdbx_ensure(nullptr, pthread_setspecific(key, value) == 0); -#endif -} - -__cold void mdbx_rthc_global_init(void) { - rthc_limit = RTHC_INITIAL_LIMIT; - rthc_table = rthc_table_static; -#if defined(_WIN32) || defined(_WIN64) - InitializeCriticalSection(&rthc_critical_section); -#else - mdbx_ensure(nullptr, - pthread_key_create(&mdbx_rthc_key, mdbx_rthc_thread_dtor) == 0); - mdbx_trace("pid %d, &mdbx_rthc_key = %p, value 0x%x", mdbx_getpid(), - &mdbx_rthc_key, (unsigned)mdbx_rthc_key); -#endif -} - -/* dtor called for thread, i.e. for all mdbx's environment objects */ -void mdbx_rthc_thread_dtor(void *ptr) { - mdbx_rthc_lock(); - mdbx_trace(">> pid %d, thread 0x%" PRIxPTR ", rthc %p", mdbx_getpid(), - (uintptr_t)mdbx_thread_self(), ptr); - - const mdbx_pid_t self_pid = mdbx_getpid(); - for (unsigned i = 0; i < rthc_count; ++i) { - const mdbx_thread_key_t key = rthc_table[i].key; - MDBX_reader *const rthc = mdbx_thread_rthc_get(key); - if (rthc < rthc_table[i].begin || rthc >= rthc_table[i].end) - continue; -#if !defined(_WIN32) && !defined(_WIN64) - if (pthread_setspecific(key, nullptr) != 0) { - mdbx_trace("== thread 0x%" PRIxPTR - ", rthc %p: ignore race with tsd-key deletion", - (uintptr_t)mdbx_thread_self(), ptr); - continue /* ignore race with tsd-key deletion by mdbx_env_close() */; - } -#endif - - mdbx_trace("== thread 0x%" PRIxPTR - ", rthc %p, [%i], %p ... %p (%+i), rtch-pid %i, " - "current-pid %i", - (uintptr_t)mdbx_thread_self(), rthc, i, rthc_table[i].begin, - rthc_table[i].end, (int)(rthc - rthc_table[i].begin), - rthc->mr_pid, self_pid); - if (rthc->mr_pid == self_pid) { - mdbx_trace("==== thread 0x%" PRIxPTR ", rthc %p, cleanup", - (uintptr_t)mdbx_thread_self(), rthc); - rthc->mr_pid = 0; - } - } - -#if defined(_WIN32) || defined(_WIN64) - mdbx_trace("<< thread 0x%" PRIxPTR ", rthc %p", (uintptr_t)mdbx_thread_self(), - ptr); - mdbx_rthc_unlock(); -#else - const char self_registration = *(char *)ptr; - *(char *)ptr = MDBX_THREAD_RTHC_ZERO; - mdbx_trace("== thread 0x%" PRIxPTR ", rthc %p, pid %d, self-status %d", - (uintptr_t)mdbx_thread_self(), ptr, mdbx_getpid(), - self_registration); - if (self_registration == MDBX_THREAD_RTHC_COUNTED) - mdbx_ensure(nullptr, mdbx_atomic_sub32(&mdbx_rthc_pending, 1) > 0); - - if (mdbx_rthc_pending == 0) { - mdbx_trace("== thread 0x%" PRIxPTR ", rthc %p, pid %d, wake", - (uintptr_t)mdbx_thread_self(), ptr, mdbx_getpid()); - mdbx_ensure(nullptr, pthread_cond_broadcast(&mdbx_rthc_cond) == 0); - } - - mdbx_trace("<< thread 0x%" PRIxPTR ", rthc %p", (uintptr_t)mdbx_thread_self(), - ptr); - /* Allow tail call optimization, i.e. gcc should generate the jmp instruction - * instead of a call for pthread_mutex_unlock() and therefore CPU could not - * return to current DSO's code section, which may be unloaded immediately - * after the mutex got released. */ - pthread_mutex_unlock(&mdbx_rthc_mutex); -#endif -} - -__cold void mdbx_rthc_global_dtor(void) { - mdbx_trace( - ">> pid %d, &mdbx_rthc_global_dtor %p, &mdbx_rthc_thread_dtor = %p, " - "&mdbx_rthc_remove = %p", - mdbx_getpid(), &mdbx_rthc_global_dtor, &mdbx_rthc_thread_dtor, - &mdbx_rthc_remove); - - mdbx_rthc_lock(); -#if !defined(_WIN32) && !defined(_WIN64) - char *rthc = (char *)pthread_getspecific(mdbx_rthc_key); - mdbx_trace("== thread 0x%" PRIxPTR ", rthc %p, pid %d, self-status %d", - (uintptr_t)mdbx_thread_self(), rthc, mdbx_getpid(), - rthc ? *rthc : -1); - if (rthc) { - const char self_registration = *(char *)rthc; - *rthc = MDBX_THREAD_RTHC_ZERO; - if (self_registration == MDBX_THREAD_RTHC_COUNTED) - mdbx_ensure(nullptr, mdbx_atomic_sub32(&mdbx_rthc_pending, 1) > 0); - } - - struct timespec abstime; - mdbx_ensure(nullptr, clock_gettime(CLOCK_REALTIME, &abstime) == 0); - abstime.tv_nsec += 1000000000l / 10; - if (abstime.tv_nsec >= 1000000000l) { - abstime.tv_nsec -= 1000000000l; - abstime.tv_sec += 1; - } -#if MDBX_DEBUG > 0 - abstime.tv_sec += 600; -#endif - - for (unsigned left; (left = mdbx_rthc_pending) > 0;) { - mdbx_trace("pid %d, pending %u, wait for...", mdbx_getpid(), left); - const int rc = - pthread_cond_timedwait(&mdbx_rthc_cond, &mdbx_rthc_mutex, &abstime); - if (rc && rc != EINTR) - break; - } - mdbx_thread_key_delete(mdbx_rthc_key); -#endif - - const mdbx_pid_t self_pid = mdbx_getpid(); - for (unsigned i = 0; i < rthc_count; ++i) { - const mdbx_thread_key_t key = rthc_table[i].key; - mdbx_thread_key_delete(key); - for (MDBX_reader *rthc = rthc_table[i].begin; rthc < rthc_table[i].end; - ++rthc) { - mdbx_trace("== [%i] = key %u, %p ... %p, rthc %p (%+i), " - "rthc-pid %i, current-pid %i", - i, key, rthc_table[i].begin, rthc_table[i].end, rthc, - (int)(rthc - rthc_table[i].begin), rthc->mr_pid, self_pid); - if (rthc->mr_pid == self_pid) { - rthc->mr_pid = 0; - mdbx_trace("== cleanup %p", rthc); - } - } - } - - rthc_limit = rthc_count = 0; - if (rthc_table != rthc_table_static) - free(rthc_table); - rthc_table = nullptr; - mdbx_rthc_unlock(); - -#if defined(_WIN32) || defined(_WIN64) - DeleteCriticalSection(&rthc_critical_section); -#else - /* LY: yielding a few timeslices to give a more chance - * to racing destructor(s) for completion. */ - mdbx_workaround_glibc_bug21031(); -#endif - - mdbx_trace("<< pid %d\n", mdbx_getpid()); -} - -__cold int mdbx_rthc_alloc(mdbx_thread_key_t *key, MDBX_reader *begin, - MDBX_reader *end) { -#ifndef NDEBUG - *key = (mdbx_thread_key_t)0xBADBADBAD; -#endif /* NDEBUG */ - int rc = mdbx_thread_key_create(key); - if (rc != MDBX_SUCCESS) - return rc; - - mdbx_rthc_lock(); - mdbx_trace(">> key 0x%x, rthc_count %u, rthc_limit %u", *key, rthc_count, - rthc_limit); - if (rthc_count == rthc_limit) { - rthc_entry_t *new_table = - realloc((rthc_table == rthc_table_static) ? nullptr : rthc_table, - sizeof(rthc_entry_t) * rthc_limit * 2); - if (new_table == nullptr) { - rc = MDBX_ENOMEM; - goto bailout; - } - if (rthc_table == rthc_table_static) - memcpy(new_table, rthc_table_static, sizeof(rthc_table_static)); - rthc_table = new_table; - rthc_limit *= 2; - } - mdbx_trace("== [%i] = key %u, %p ... %p", rthc_count, *key, begin, end); - rthc_table[rthc_count].key = *key; - rthc_table[rthc_count].begin = begin; - rthc_table[rthc_count].end = end; - ++rthc_count; - mdbx_trace("<< key 0x%x, rthc_count %u, rthc_limit %u", *key, rthc_count, - rthc_limit); - mdbx_rthc_unlock(); - return MDBX_SUCCESS; - -bailout: - mdbx_thread_key_delete(*key); - mdbx_rthc_unlock(); - return rc; -} - -__cold void mdbx_rthc_remove(const mdbx_thread_key_t key) { - mdbx_thread_key_delete(key); - mdbx_rthc_lock(); - mdbx_trace(">> key 0x%x, rthc_count %u, rthc_limit %u", key, rthc_count, - rthc_limit); - - for (unsigned i = 0; i < rthc_count; ++i) { - if (key == rthc_table[i].key) { - const mdbx_pid_t self_pid = mdbx_getpid(); - mdbx_trace("== [%i], %p ...%p, current-pid %d", i, rthc_table[i].begin, - rthc_table[i].end, self_pid); - - for (MDBX_reader *rthc = rthc_table[i].begin; rthc < rthc_table[i].end; - ++rthc) { - if (rthc->mr_pid == self_pid) { - rthc->mr_pid = 0; - mdbx_trace("== cleanup %p", rthc); - } - } - if (--rthc_count > 0) - rthc_table[i] = rthc_table[rthc_count]; - else if (rthc_table != rthc_table_static) { - free(rthc_table); - rthc_table = rthc_table_static; - rthc_limit = RTHC_INITIAL_LIMIT; - } - break; - } - } - - mdbx_trace("<< key 0x%x, rthc_count %u, rthc_limit %u", key, rthc_count, - rthc_limit); - mdbx_rthc_unlock(); -} - -/*----------------------------------------------------------------------------*/ - -/* Allocate an PNL. - * Allocates memory for an PNL of the given size. - * Returns PNL on success, NULL on failure. */ -static MDBX_PNL mdbx_pnl_alloc(size_t size) { - MDBX_PNL pl = malloc((size + 2) * sizeof(pgno_t)); - if (likely(pl)) { - *pl++ = (pgno_t)size; - *pl = 0; - } - return pl; -} - -static MDBX_TXL mdbx_txl_alloc(void) { - const size_t malloc_overhead = sizeof(void *) * 2; - const size_t bytes = mdbx_roundup2(malloc_overhead + sizeof(txnid_t) * 61, - MDBX_CACHELINE_SIZE) - - malloc_overhead; - MDBX_TXL ptr = malloc(bytes); - if (likely(ptr)) { - *ptr++ = bytes / sizeof(txnid_t) - 2; - *ptr = 0; - } - return ptr; -} - -/* Free an PNL. - * [in] pl The PNL to free. */ -static void mdbx_pnl_free(MDBX_PNL pl) { - if (likely(pl)) - free(pl - 1); -} - -static void mdbx_txl_free(MDBX_TXL list) { - if (likely(list)) - free(list - 1); -} - -/* Append ID to PNL. The PNL must be big enough. */ -static __inline void mdbx_pnl_xappend(MDBX_PNL pl, pgno_t id) { - assert(pl[0] + (size_t)1 < MDBX_PNL_ALLOCLEN(pl)); - pl[pl[0] += 1] = id; -} - -static bool mdbx_pnl_check(MDBX_PNL pl) { - if (pl) { - for (const pgno_t *ptr = pl + pl[0]; --ptr > pl;) { - assert(MDBX_PNL_ORDERED(ptr[0], ptr[1])); - assert(ptr[0] >= NUM_METAS); - if (unlikely(MDBX_PNL_DISORDERED(ptr[0], ptr[1]) || ptr[0] < NUM_METAS)) - return false; - } - } - return true; -} - -/* Sort an PNL. - * [in,out] pnl The PNL to sort. */ -static void __hot mdbx_pnl_sort(MDBX_PNL pnl) { - /* Max possible depth of int-indexed tree * 2 items/level */ - int istack[sizeof(int) * CHAR_BIT * 2]; - int i, j, k, l, ir, jstack; - pgno_t a; - -/* Quicksort + Insertion sort for small arrays */ -#define PNL_SMALL 8 -#define PNL_SWAP(a, b) \ - do { \ - pgno_t tmp_pgno = (a); \ - (a) = (b); \ - (b) = tmp_pgno; \ - } while (0) - - ir = (int)pnl[0]; - l = 1; - jstack = 0; - while (1) { - if (ir - l < PNL_SMALL) { /* Insertion sort */ - for (j = l + 1; j <= ir; j++) { - a = pnl[j]; - for (i = j - 1; i >= 1; i--) { - if (MDBX_PNL_DISORDERED(a, pnl[i])) - break; - pnl[i + 1] = pnl[i]; - } - pnl[i + 1] = a; - } - if (jstack == 0) - break; - ir = istack[jstack--]; - l = istack[jstack--]; - } else { - k = (l + ir) >> 1; /* Choose median of left, center, right */ - PNL_SWAP(pnl[k], pnl[l + 1]); - if (MDBX_PNL_ORDERED(pnl[ir], pnl[l])) - PNL_SWAP(pnl[l], pnl[ir]); - - if (MDBX_PNL_ORDERED(pnl[ir], pnl[l + 1])) - PNL_SWAP(pnl[l + 1], pnl[ir]); - - if (MDBX_PNL_ORDERED(pnl[l + 1], pnl[l])) - PNL_SWAP(pnl[l], pnl[l + 1]); - - i = l + 1; - j = ir; - a = pnl[l + 1]; - while (1) { - do - i++; - while (MDBX_PNL_ORDERED(pnl[i], a)); - do - j--; - while (MDBX_PNL_ORDERED(a, pnl[j])); - if (j < i) - break; - PNL_SWAP(pnl[i], pnl[j]); - } - pnl[l + 1] = pnl[j]; - pnl[j] = a; - jstack += 2; - if (ir - i + 1 >= j - l) { - istack[jstack] = ir; - istack[jstack - 1] = i; - ir = j - 1; - } else { - istack[jstack] = j - 1; - istack[jstack - 1] = l; - l = i; - } - } - } -#undef PNL_SMALL -#undef PNL_SWAP - assert(mdbx_pnl_check(pnl)); -} - -/* Search for an ID in an PNL. - * [in] pl The PNL to search. - * [in] id The ID to search for. - * Returns The index of the first ID greater than or equal to id. */ -static unsigned __hot mdbx_pnl_search(MDBX_PNL pnl, pgno_t id) { - assert(mdbx_pnl_check(pnl)); - - /* binary search of id in pl - * if found, returns position of id - * if not found, returns first position greater than id */ - unsigned base = 0; - unsigned cursor = 1; - int val = 0; - unsigned n = pnl[0]; - - while (n > 0) { - unsigned pivot = n >> 1; - cursor = base + pivot + 1; - val = MDBX_PNL_ASCENDING ? mdbx_cmp2int(pnl[cursor], id) - : mdbx_cmp2int(id, pnl[cursor]); - - if (val < 0) { - n = pivot; - } else if (val > 0) { - base = cursor; - n -= pivot + 1; - } else { - return cursor; - } - } - - if (val > 0) - ++cursor; - - return cursor; -} - -/* Shrink an PNL. - * Return the PNL to the default size if it has grown larger. - * [in,out] ppl Address of the PNL to shrink. */ -static void mdbx_pnl_shrink(MDBX_PNL *ppl) { - MDBX_PNL pl = *ppl - 1; - if (unlikely(*pl > MDBX_PNL_UM_MAX)) { - /* shrink to MDBX_PNL_UM_MAX */ - pl = realloc(pl, (MDBX_PNL_UM_MAX + 2) * sizeof(pgno_t)); - if (likely(pl)) { - *pl++ = MDBX_PNL_UM_MAX; - *ppl = pl; - } - } -} - -/* Grow an PNL. - * Return the PNL to the size growed by given number. - * [in,out] ppl Address of the PNL to grow. */ -static int mdbx_pnl_grow(MDBX_PNL *ppl, size_t num) { - MDBX_PNL idn = *ppl - 1; - /* grow it */ - idn = realloc(idn, (*idn + num + 2) * sizeof(pgno_t)); - if (unlikely(!idn)) - return MDBX_ENOMEM; - *idn++ += (pgno_t)num; - *ppl = idn; - return 0; -} - -static int mdbx_txl_grow(MDBX_TXL *ptr, size_t num) { - MDBX_TXL list = *ptr - 1; - /* grow it */ - list = realloc(list, ((size_t)*list + num + 2) * sizeof(txnid_t)); - if (unlikely(!list)) - return MDBX_ENOMEM; - *list++ += num; - *ptr = list; - return 0; -} - -/* Make room for num additional elements in an PNL. - * [in,out] ppl Address of the PNL. - * [in] num Number of elements to make room for. - * Returns 0 on success, MDBX_ENOMEM on failure. */ -static int mdbx_pnl_need(MDBX_PNL *ppl, size_t num) { - MDBX_PNL pl = *ppl; - num += pl[0]; - if (unlikely(num > pl[-1])) { - num = (num + num / 4 + (256 + 2)) & -256; - pl = realloc(pl - 1, num * sizeof(pgno_t)); - if (unlikely(!pl)) - return MDBX_ENOMEM; - *pl++ = (pgno_t)num - 2; - *ppl = pl; - } - return 0; -} - -/* Append an ID onto an PNL. - * [in,out] ppl Address of the PNL to append to. - * [in] id The ID to append. - * Returns 0 on success, MDBX_ENOMEM if the PNL is too large. */ -static int mdbx_pnl_append(MDBX_PNL *ppl, pgno_t id) { - MDBX_PNL pl = *ppl; - /* Too big? */ - if (unlikely(pl[0] >= pl[-1])) { - if (mdbx_pnl_grow(ppl, MDBX_PNL_UM_MAX)) - return MDBX_ENOMEM; - pl = *ppl; - } - pl[0]++; - pl[pl[0]] = id; - return 0; -} - -static int mdbx_txl_append(MDBX_TXL *ptr, txnid_t id) { - MDBX_TXL list = *ptr; - /* Too big? */ - if (unlikely(list[0] >= list[-1])) { - if (mdbx_txl_grow(ptr, (size_t)list[0])) - return MDBX_ENOMEM; - list = *ptr; - } - list[0]++; - list[list[0]] = id; - return 0; -} - -/* Append an PNL onto an PNL. - * [in,out] ppl Address of the PNL to append to. - * [in] app The PNL to append. - * Returns 0 on success, MDBX_ENOMEM if the PNL is too large. */ -static int mdbx_pnl_append_list(MDBX_PNL *ppl, MDBX_PNL app) { - MDBX_PNL pnl = *ppl; - /* Too big? */ - if (unlikely(pnl[0] + app[0] >= pnl[-1])) { - if (mdbx_pnl_grow(ppl, app[0])) - return MDBX_ENOMEM; - pnl = *ppl; - } - memcpy(&pnl[pnl[0] + 1], &app[1], app[0] * sizeof(pgno_t)); - pnl[0] += app[0]; - return 0; -} - -static int mdbx_txl_append_list(MDBX_TXL *ptr, MDBX_TXL append) { - MDBX_TXL list = *ptr; - /* Too big? */ - if (unlikely(list[0] + append[0] >= list[-1])) { - if (mdbx_txl_grow(ptr, (size_t)append[0])) - return MDBX_ENOMEM; - list = *ptr; - } - memcpy(&list[list[0] + 1], &append[1], (size_t)append[0] * sizeof(txnid_t)); - list[0] += append[0]; - return 0; -} - -/* Append an ID range onto an PNL. - * [in,out] ppl Address of the PNL to append to. - * [in] id The lowest ID to append. - * [in] n Number of IDs to append. - * Returns 0 on success, MDBX_ENOMEM if the PNL is too large. */ -static int mdbx_pnl_append_range(MDBX_PNL *ppl, pgno_t id, size_t n) { - pgno_t *pnl = *ppl, len = pnl[0]; - /* Too big? */ - if (unlikely(len + n > pnl[-1])) { - if (mdbx_pnl_grow(ppl, n | MDBX_PNL_UM_MAX)) - return MDBX_ENOMEM; - pnl = *ppl; - } - pnl[0] = len + (pgno_t)n; - pnl += len; - while (n) - pnl[n--] = id++; - return 0; -} - -/* Merge an PNL onto an PNL. The destination PNL must be big enough. - * [in] pl The PNL to merge into. - * [in] merge The PNL to merge. */ -static void __hot mdbx_pnl_xmerge(MDBX_PNL pnl, MDBX_PNL merge) { - assert(mdbx_pnl_check(pnl)); - assert(mdbx_pnl_check(merge)); - pgno_t old_id, merge_id, i = merge[0], j = pnl[0], k = i + j, total = k; - pnl[0] = - MDBX_PNL_ASCENDING ? 0 : ~(pgno_t)0; /* delimiter for pl scan below */ - old_id = pnl[j]; - while (i) { - merge_id = merge[i--]; - for (; MDBX_PNL_ORDERED(merge_id, old_id); old_id = pnl[--j]) - pnl[k--] = old_id; - pnl[k--] = merge_id; - } - pnl[0] = total; - assert(mdbx_pnl_check(pnl)); -} - -/* Search for an ID in an ID2L. - * [in] pnl The ID2L to search. - * [in] id The ID to search for. - * Returns The index of the first ID2 whose mid member is greater than - * or equal to id. */ -static unsigned __hot mdbx_mid2l_search(MDBX_ID2L pnl, pgno_t id) { - /* binary search of id in pnl - * if found, returns position of id - * if not found, returns first position greater than id */ - unsigned base = 0; - unsigned cursor = 1; - int val = 0; - unsigned n = (unsigned)pnl[0].mid; - -#if MDBX_DEBUG - for (const MDBX_ID2 *ptr = pnl + pnl[0].mid; --ptr > pnl;) { - assert(ptr[0].mid < ptr[1].mid); - assert(ptr[0].mid >= NUM_METAS); - } -#endif - - while (n > 0) { - unsigned pivot = n >> 1; - cursor = base + pivot + 1; - val = mdbx_cmp2int(id, pnl[cursor].mid); - - if (val < 0) { - n = pivot; - } else if (val > 0) { - base = cursor; - n -= pivot + 1; - } else { - return cursor; - } - } - - if (val > 0) - ++cursor; - - return cursor; -} - -/* Insert an ID2 into a ID2L. - * [in,out] pnl The ID2L to insert into. - * [in] id The ID2 to insert. - * Returns 0 on success, -1 if the ID was already present in the ID2L. */ -static int mdbx_mid2l_insert(MDBX_ID2L pnl, MDBX_ID2 *id) { - unsigned x = mdbx_mid2l_search(pnl, id->mid); - if (unlikely(x < 1)) - return /* internal error */ -2; - - if (x <= pnl[0].mid && pnl[x].mid == id->mid) - return /* duplicate */ -1; - - if (unlikely(pnl[0].mid >= MDBX_PNL_UM_MAX)) - return /* too big */ -2; - - /* insert id */ - pnl[0].mid++; - for (unsigned i = (unsigned)pnl[0].mid; i > x; i--) - pnl[i] = pnl[i - 1]; - pnl[x] = *id; - return 0; -} - -/* Append an ID2 into a ID2L. - * [in,out] pnl The ID2L to append into. - * [in] id The ID2 to append. - * Returns 0 on success, -2 if the ID2L is too big. */ -static int mdbx_mid2l_append(MDBX_ID2L pnl, MDBX_ID2 *id) { -#if MDBX_DEBUG - for (unsigned i = pnl[0].mid; i > 0; --i) { - assert(pnl[i].mid != id->mid); - if (unlikely(pnl[i].mid == id->mid)) - return -1; - } -#endif - - /* Too big? */ - if (unlikely(pnl[0].mid >= MDBX_PNL_UM_MAX)) - return -2; - - pnl[0].mid++; - pnl[pnl[0].mid] = *id; - return 0; -} - -/*----------------------------------------------------------------------------*/ - -int mdbx_runtime_flags = MDBX_DBG_PRINT -#if MDBX_DEBUG - | MDBX_DBG_ASSERT -#endif -#if MDBX_DEBUG > 1 - | MDBX_DBG_TRACE -#endif -#if MDBX_DEBUG > 2 - | MDBX_DBG_AUDIT -#endif -#if MDBX_DEBUG > 3 - | MDBX_DBG_EXTRA -#endif - ; - -MDBX_debug_func *mdbx_debug_logger; - -static int mdbx_page_alloc(MDBX_cursor *mc, unsigned num, MDBX_page **mp, - int flags); -static int mdbx_page_new(MDBX_cursor *mc, uint32_t flags, unsigned num, - MDBX_page **mp); -static int mdbx_page_touch(MDBX_cursor *mc); -static int mdbx_cursor_touch(MDBX_cursor *mc); - -#define MDBX_END_NAMES \ - { \ - "committed", "empty-commit", "abort", "reset", "reset-tmp", "fail-begin", \ - "fail-beginchild" \ - } -enum { - /* mdbx_txn_end operation number, for logging */ - MDBX_END_COMMITTED, - MDBX_END_EMPTY_COMMIT, - MDBX_END_ABORT, - MDBX_END_RESET, - MDBX_END_RESET_TMP, - MDBX_END_FAIL_BEGIN, - MDBX_END_FAIL_BEGINCHILD -}; -#define MDBX_END_OPMASK 0x0F /* mask for mdbx_txn_end() operation number */ -#define MDBX_END_UPDATE 0x10 /* update env state (DBIs) */ -#define MDBX_END_FREE 0x20 /* free txn unless it is MDBX_env.me_txn0 */ -#define MDBX_END_EOTDONE 0x40 /* txn's cursors already closed */ -#define MDBX_END_SLOT 0x80 /* release any reader slot if MDBX_NOTLS */ -static int mdbx_txn_end(MDBX_txn *txn, unsigned mode); - -static int __must_check_result mdbx_page_get(MDBX_cursor *mc, pgno_t pgno, - MDBX_page **mp, int *lvl); -static int __must_check_result mdbx_page_search_root(MDBX_cursor *mc, - MDBX_val *key, int modify); - -#define MDBX_PS_MODIFY 1 -#define MDBX_PS_ROOTONLY 2 -#define MDBX_PS_FIRST 4 -#define MDBX_PS_LAST 8 -static int __must_check_result mdbx_page_search(MDBX_cursor *mc, MDBX_val *key, - int flags); -static int __must_check_result mdbx_page_merge(MDBX_cursor *csrc, - MDBX_cursor *cdst); - -#define MDBX_SPLIT_REPLACE MDBX_APPENDDUP /* newkey is not new */ -static int __must_check_result mdbx_page_split(MDBX_cursor *mc, - MDBX_val *newkey, - MDBX_val *newdata, - pgno_t newpgno, unsigned nflags); - -static int __must_check_result mdbx_read_header(MDBX_env *env, MDBX_meta *meta, - uint64_t *filesize); -static int __must_check_result mdbx_sync_locked(MDBX_env *env, unsigned flags, - MDBX_meta *const pending); -static void mdbx_env_close0(MDBX_env *env); - -static MDBX_node *mdbx_node_search(MDBX_cursor *mc, MDBX_val *key, int *exactp); -static int __must_check_result mdbx_node_add(MDBX_cursor *mc, unsigned indx, - MDBX_val *key, MDBX_val *data, - pgno_t pgno, unsigned flags); -static void mdbx_node_del(MDBX_cursor *mc, size_t ksize); -static void mdbx_node_shrink(MDBX_page *mp, unsigned indx); -static int __must_check_result mdbx_node_move(MDBX_cursor *csrc, - MDBX_cursor *cdst, int fromleft); -static int __must_check_result mdbx_node_read(MDBX_cursor *mc, MDBX_node *leaf, - MDBX_val *data); -static size_t mdbx_leaf_size(MDBX_env *env, MDBX_val *key, MDBX_val *data); -static size_t mdbx_branch_size(MDBX_env *env, MDBX_val *key); - -static int __must_check_result mdbx_rebalance(MDBX_cursor *mc); -static int __must_check_result mdbx_update_key(MDBX_cursor *mc, MDBX_val *key); - -static void mdbx_cursor_pop(MDBX_cursor *mc); -static int __must_check_result mdbx_cursor_push(MDBX_cursor *mc, MDBX_page *mp); - -static int __must_check_result mdbx_cursor_del0(MDBX_cursor *mc); -static int __must_check_result mdbx_del0(MDBX_txn *txn, MDBX_dbi dbi, - MDBX_val *key, MDBX_val *data, - unsigned flags); -static int __must_check_result mdbx_cursor_sibling(MDBX_cursor *mc, - int move_right); -static int __must_check_result mdbx_cursor_next(MDBX_cursor *mc, MDBX_val *key, - MDBX_val *data, - MDBX_cursor_op op); -static int __must_check_result mdbx_cursor_prev(MDBX_cursor *mc, MDBX_val *key, - MDBX_val *data, - MDBX_cursor_op op); -static int __must_check_result mdbx_cursor_set(MDBX_cursor *mc, MDBX_val *key, - MDBX_val *data, - MDBX_cursor_op op, int *exactp); -static int __must_check_result mdbx_cursor_first(MDBX_cursor *mc, MDBX_val *key, - MDBX_val *data); -static int __must_check_result mdbx_cursor_last(MDBX_cursor *mc, MDBX_val *key, - MDBX_val *data); - -static int __must_check_result mdbx_cursor_init(MDBX_cursor *mc, MDBX_txn *txn, - MDBX_dbi dbi, MDBX_xcursor *mx); -static int __must_check_result mdbx_xcursor_init0(MDBX_cursor *mc); -static int __must_check_result mdbx_xcursor_init1(MDBX_cursor *mc, - MDBX_node *node); -static int __must_check_result mdbx_xcursor_init2(MDBX_cursor *mc, - MDBX_xcursor *src_mx, - int force); - -static int __must_check_result mdbx_drop0(MDBX_cursor *mc, int subs); - -static MDBX_cmp_func mdbx_cmp_memn, mdbx_cmp_memnr, mdbx_cmp_int_ai, - mdbx_cmp_int_a2, mdbx_cmp_int_ua; - -static const char *__mdbx_strerr(int errnum) { - /* Table of descriptions for MDBX errors */ - static const char *const tbl[] = { - "MDBX_KEYEXIST: Key/data pair already exists", - "MDBX_NOTFOUND: No matching key/data pair found", - "MDBX_PAGE_NOTFOUND: Requested page not found", - "MDBX_CORRUPTED: Database is corrupted", - "MDBX_PANIC: Update of meta page failed or environment had fatal error", - "MDBX_VERSION_MISMATCH: DB version mismatch libmdbx", - "MDBX_INVALID: File is not an MDBX file", - "MDBX_MAP_FULL: Environment mapsize limit reached", - "MDBX_DBS_FULL: Too may DBI (maxdbs reached)", - "MDBX_READERS_FULL: Too many readers (maxreaders reached)", - NULL /* MDBX_TLS_FULL (-30789): unused in MDBX */, - "MDBX_TXN_FULL: Transaction has too many dirty pages - transaction too " - "big", - "MDBX_CURSOR_FULL: Internal error - cursor stack limit reached", - "MDBX_PAGE_FULL: Internal error - page has no more space", - "MDBX_MAP_RESIZED: Database contents grew beyond environment mapsize", - "MDBX_INCOMPATIBLE: Operation and DB incompatible, or DB flags changed", - "MDBX_BAD_RSLOT: Invalid reuse of reader locktable slot", - "MDBX_BAD_TXN: Transaction must abort, has a child, or is invalid", - "MDBX_BAD_VALSIZE: Unsupported size of key/DB name/data, or wrong " - "DUPFIXED size", - "MDBX_BAD_DBI: The specified DBI handle was closed/changed unexpectedly", - "MDBX_PROBLEM: Unexpected problem - txn should abort", - "MDBX_BUSY: Another write transaction is started", - }; - - if (errnum >= MDBX_KEYEXIST && errnum <= MDBX_LAST_ERRCODE) { - int i = errnum - MDBX_KEYEXIST; - return tbl[i]; - } - - switch (errnum) { - case MDBX_SUCCESS: - return "MDBX_SUCCESS: Successful"; - case MDBX_EMULTIVAL: - return "MDBX_EMULTIVAL: Unable to update multi-value for the given key"; - case MDBX_EBADSIGN: - return "MDBX_EBADSIGN: Wrong signature of a runtime object(s)"; - case MDBX_WANNA_RECOVERY: - return "MDBX_WANNA_RECOVERY: Database should be recovered, but this could " - "NOT be done in a read-only mode"; - case MDBX_EKEYMISMATCH: - return "MDBX_EKEYMISMATCH: The given key value is mismatched to the " - "current cursor position"; - case MDBX_TOO_LARGE: - return "MDBX_TOO_LARGE: Database is too large for current system, " - "e.g. could NOT be mapped into RAM"; - case MDBX_THREAD_MISMATCH: - return "MDBX_THREAD_MISMATCH: A thread has attempted to use a not " - "owned object, e.g. a transaction that started by another thread"; - default: - return NULL; - } -} - -const char *__cold mdbx_strerror_r(int errnum, char *buf, size_t buflen) { - const char *msg = __mdbx_strerr(errnum); - if (!msg) { - if (!buflen || buflen > INT_MAX) - return NULL; -#ifdef _MSC_VER - size_t size = FormatMessageA( - FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, - errnum, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), buf, (DWORD)buflen, - NULL); - return size ? buf : NULL; -#elif defined(_GNU_SOURCE) - /* GNU-specific */ - msg = strerror_r(errnum, buf, buflen); -#elif (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) - /* XSI-compliant */ - int rc = strerror_r(errnum, buf, buflen); - if (rc) { - rc = snprintf(buf, buflen, "error %d", errnum); - assert(rc > 0); - } - return buf; -#else - strncpy(buf, strerror(errnum), buflen); - buf[buflen - 1] = '\0'; - return buf; -#endif - } - return msg; -} - -const char *__cold mdbx_strerror(int errnum) { - const char *msg = __mdbx_strerr(errnum); - if (!msg) { -#ifdef _MSC_VER - static char buffer[1024]; - size_t size = FormatMessageA( - FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, - errnum, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), buffer, - sizeof(buffer), NULL); - if (size) - msg = buffer; -#else - if (errnum < 0) { - static char buffer[32]; - int rc = snprintf(buffer, sizeof(buffer) - 1, "unknown error %d", errnum); - assert(rc > 0); - (void)rc; - return buffer; - } - msg = strerror(errnum); -#endif - } - return msg; -} - -static txnid_t mdbx_oomkick(MDBX_env *env, const txnid_t laggard); - -void __cold mdbx_debug_log(int type, const char *function, int line, - const char *fmt, ...) { - va_list args; - - va_start(args, fmt); - if (mdbx_debug_logger) - mdbx_debug_logger(type, function, line, fmt, args); - else { - if (function && line > 0) - fprintf(stderr, "%s:%d ", function, line); - else if (function) - fprintf(stderr, "%s: ", function); - else if (line > 0) - fprintf(stderr, "%d: ", line); - vfprintf(stderr, fmt, args); - fflush(stderr); - } - va_end(args); -} - -/* Dump a key in ascii or hexadecimal. */ -char *mdbx_dkey(const MDBX_val *key, char *const buf, const size_t bufsize) { - if (!key) - return "<null>"; - if (!buf || bufsize < 4) - return nullptr; - if (!key->iov_len) - return "<empty>"; - - const uint8_t *const data = key->iov_base; - bool is_ascii = true; - unsigned i; - for (i = 0; is_ascii && i < key->iov_len; i++) - if (data[i] < ' ' || data[i] > 127) - is_ascii = false; - - if (is_ascii) { - int len = - snprintf(buf, bufsize, "%.*s", - (key->iov_len > INT_MAX) ? INT_MAX : (int)key->iov_len, data); - assert(len > 0 && (unsigned)len < bufsize); - (void)len; - } else { - char *const detent = buf + bufsize - 2; - char *ptr = buf; - *ptr++ = '<'; - for (i = 0; i < key->iov_len; i++) { - const ptrdiff_t left = detent - ptr; - assert(left > 0); - int len = snprintf(ptr, left, "%02x", data[i]); - if (len < 0 || len >= left) - break; - ptr += len; - } - if (ptr < detent) { - ptr[0] = '>'; - ptr[1] = '\0'; - } - } - return buf; -} - -#if 0 /* LY: debug stuff */ -static const char *mdbx_leafnode_type(MDBX_node *n) { - static char *const tp[2][2] = {{"", ": DB"}, {": sub-page", ": sub-DB"}}; - return F_ISSET(n->mn_flags, F_BIGDATA) ? ": overflow page" - : tp[F_ISSET(n->mn_flags, F_DUPDATA)] - [F_ISSET(n->mn_flags, F_SUBDATA)]; -} - -/* Display all the keys in the page. */ -static void mdbx_page_list(MDBX_page *mp) { - pgno_t pgno = mp->mp_pgno; - const char *type, *state = (mp->mp_flags & P_DIRTY) ? ", dirty" : ""; - MDBX_node *node; - unsigned i, nkeys, nsize, total = 0; - MDBX_val key; - DKBUF; - - switch (mp->mp_flags & - (P_BRANCH | P_LEAF | P_LEAF2 | P_META | P_OVERFLOW | P_SUBP)) { - case P_BRANCH: - type = "Branch page"; - break; - case P_LEAF: - type = "Leaf page"; - break; - case P_LEAF | P_SUBP: - type = "Sub-page"; - break; - case P_LEAF | P_LEAF2: - type = "LEAF2 page"; - break; - case P_LEAF | P_LEAF2 | P_SUBP: - type = "LEAF2 sub-page"; - break; - case P_OVERFLOW: - mdbx_print("Overflow page %" PRIu64 " pages %u%s\n", pgno, mp->mp_pages, - state); - return; - case P_META: - mdbx_print("Meta-page %" PRIu64 " txnid %" PRIu64 "\n", pgno, - ((MDBX_meta *)PAGEDATA(mp))->mm_txnid); - return; - default: - mdbx_print("Bad page %" PRIu64 " flags 0x%X\n", pgno, mp->mp_flags); - return; - } - - nkeys = NUMKEYS(mp); - mdbx_print("%s %" PRIu64 " numkeys %u%s\n", type, pgno, nkeys, state); - - for (i = 0; i < nkeys; i++) { - if (IS_LEAF2(mp)) { /* LEAF2 pages have no mp_ptrs[] or node headers */ - key.iov_len = nsize = mp->mp_leaf2_ksize; - key.iov_base = LEAF2KEY(mp, i, nsize); - total += nsize; - mdbx_print("key %u: nsize %u, %s\n", i, nsize, DKEY(&key)); - continue; - } - node = NODEPTR(mp, i); - key.iov_len = node->mn_ksize; - key.iov_base = node->mn_data; - nsize = NODESIZE + key.iov_len; - if (IS_BRANCH(mp)) { - mdbx_print("key %u: page %" PRIu64 ", %s\n", i, NODEPGNO(node), - DKEY(&key)); - total += nsize; - } else { - if (F_ISSET(node->mn_flags, F_BIGDATA)) - nsize += sizeof(pgno_t); - else - nsize += NODEDSZ(node); - total += nsize; - nsize += sizeof(indx_t); - mdbx_print("key %u: nsize %u, %s%s\n", i, nsize, DKEY(&key), - mdbx_leafnode_type(node)); - } - total = EVEN(total); - } - mdbx_print("Total: header %u + contents %u + unused %u\n", - IS_LEAF2(mp) ? PAGEHDRSZ : PAGEHDRSZ + mp->mp_lower, total, - SIZELEFT(mp)); -} - -static void mdbx_cursor_chk(MDBX_cursor *mc) { - unsigned i; - MDBX_node *node; - MDBX_page *mp; - - if (!mc->mc_snum || !(mc->mc_flags & C_INITIALIZED)) - return; - for (i = 0; i < mc->mc_top; i++) { - mp = mc->mc_pg[i]; - node = NODEPTR(mp, mc->mc_ki[i]); - if (unlikely(NODEPGNO(node) != mc->mc_pg[i + 1]->mp_pgno)) - mdbx_print("oops!\n"); - } - if (unlikely(mc->mc_ki[i] >= NUMKEYS(mc->mc_pg[i]))) - mdbx_print("ack!\n"); - if (XCURSOR_INITED(mc)) { - node = NODEPTR(mc->mc_pg[mc->mc_top], mc->mc_ki[mc->mc_top]); - if (((node->mn_flags & (F_DUPDATA | F_SUBDATA)) == F_DUPDATA) && - mc->mc_xcursor->mx_cursor.mc_pg[0] != NODEDATA(node)) { - mdbx_print("blah!\n"); - } - } -} -#endif /* 0 */ - -/* Count all the pages in each DB and in the freelist and make sure - * it matches the actual number of pages being used. - * All named DBs must be open for a correct count. */ -static int mdbx_audit(MDBX_txn *txn) { - MDBX_cursor mc; - MDBX_val key, data; - int rc; - - pgno_t freecount = 0; - rc = mdbx_cursor_init(&mc, txn, FREE_DBI, NULL); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - while ((rc = mdbx_cursor_get(&mc, &key, &data, MDBX_NEXT)) == 0) - freecount += *(pgno_t *)data.iov_base; - mdbx_tassert(txn, rc == MDBX_NOTFOUND); - - pgno_t count = 0; - for (MDBX_dbi i = 0; i < txn->mt_numdbs; i++) { - MDBX_xcursor mx; - if (!(txn->mt_dbflags[i] & DB_VALID)) - continue; - rc = mdbx_cursor_init(&mc, txn, i, &mx); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - if (txn->mt_dbs[i].md_root == P_INVALID) - continue; - count += txn->mt_dbs[i].md_branch_pages + txn->mt_dbs[i].md_leaf_pages + - txn->mt_dbs[i].md_overflow_pages; - if (txn->mt_dbs[i].md_flags & MDBX_DUPSORT) { - rc = mdbx_page_search(&mc, NULL, MDBX_PS_FIRST); - for (; rc == MDBX_SUCCESS; rc = mdbx_cursor_sibling(&mc, 1)) { - MDBX_page *mp = mc.mc_pg[mc.mc_top]; - for (unsigned j = 0; j < NUMKEYS(mp); j++) { - MDBX_node *leaf = NODEPTR(mp, j); - if (leaf->mn_flags & F_SUBDATA) { - MDBX_db db; - memcpy(&db, NODEDATA(leaf), sizeof(db)); - count += - db.md_branch_pages + db.md_leaf_pages + db.md_overflow_pages; - } - } - } - mdbx_tassert(txn, rc == MDBX_NOTFOUND); - } - } - if (freecount + count + NUM_METAS != txn->mt_next_pgno) { - mdbx_print("audit: %" PRIaTXN " freecount: %" PRIaPGNO " count: %" PRIaPGNO - " total: %" PRIaPGNO " next_pgno: %" PRIaPGNO "\n", - txn->mt_txnid, freecount, count + NUM_METAS, - freecount + count + NUM_METAS, txn->mt_next_pgno); - return MDBX_CORRUPTED; - } - return MDBX_SUCCESS; -} - -int mdbx_cmp(MDBX_txn *txn, MDBX_dbi dbi, const MDBX_val *a, - const MDBX_val *b) { - mdbx_assert(NULL, txn->mt_signature == MDBX_MT_SIGNATURE); - return txn->mt_dbxs[dbi].md_cmp(a, b); -} - -int mdbx_dcmp(MDBX_txn *txn, MDBX_dbi dbi, const MDBX_val *a, - const MDBX_val *b) { - mdbx_assert(NULL, txn->mt_signature == MDBX_MT_SIGNATURE); - return txn->mt_dbxs[dbi].md_dcmp(a, b); -} - -/* Allocate memory for a page. - * Re-use old malloc'd pages first for singletons, otherwise just malloc. - * Set MDBX_TXN_ERROR on failure. */ -static MDBX_page *mdbx_page_malloc(MDBX_txn *txn, unsigned num) { - MDBX_env *env = txn->mt_env; - MDBX_page *np = env->me_dpages; - size_t size = env->me_psize; - if (likely(num == 1 && np)) { - ASAN_UNPOISON_MEMORY_REGION(np, size); - VALGRIND_MEMPOOL_ALLOC(env, np, size); - VALGRIND_MAKE_MEM_DEFINED(&np->mp_next, sizeof(np->mp_next)); - env->me_dpages = np->mp_next; - } else { - size = pgno2bytes(env, num); - np = malloc(size); - if (unlikely(!np)) { - txn->mt_flags |= MDBX_TXN_ERROR; - return np; - } - VALGRIND_MEMPOOL_ALLOC(env, np, size); - } - - if ((env->me_flags & MDBX_NOMEMINIT) == 0) { - /* For a single page alloc, we init everything after the page header. - * For multi-page, we init the final page; if the caller needed that - * many pages they will be filling in at least up to the last page. */ - size_t skip = PAGEHDRSZ; - if (num > 1) - skip += pgno2bytes(env, num - 1); - memset((char *)np + skip, 0, size - skip); - } -#if MDBX_DEBUG - np->mp_pgno = 0; -#endif - VALGRIND_MAKE_MEM_UNDEFINED(np, size); - np->mp_flags = 0; - np->mp_pages = num; - return np; -} - -/* Free a single page. - * Saves single pages to a list, for future reuse. - * (This is not used for multi-page overflow pages.) */ -static __inline void mdbx_page_free(MDBX_env *env, MDBX_page *mp) { -#if MDBX_DEBUG - mp->mp_pgno = MAX_PAGENO; -#endif - mp->mp_next = env->me_dpages; - VALGRIND_MEMPOOL_FREE(env, mp); - env->me_dpages = mp; -} - -/* Free a dirty page */ -static void mdbx_dpage_free(MDBX_env *env, MDBX_page *dp) { - if (!IS_OVERFLOW(dp) || dp->mp_pages == 1) { - mdbx_page_free(env, dp); - } else { - /* large pages just get freed directly */ - VALGRIND_MEMPOOL_FREE(env, dp); - free(dp); - } -} - -/* Return all dirty pages to dpage list */ -static void mdbx_dlist_free(MDBX_txn *txn) { - MDBX_env *env = txn->mt_env; - MDBX_ID2L dl = txn->mt_rw_dirtylist; - size_t i, n = dl[0].mid; - - for (i = 1; i <= n; i++) - mdbx_dpage_free(env, dl[i].mptr); - - dl[0].mid = 0; -} - -static size_t bytes_align2os_bytes(const MDBX_env *env, size_t bytes) { - return mdbx_roundup2(mdbx_roundup2(bytes, env->me_psize), env->me_os_psize); -} - -static void __cold mdbx_kill_page(MDBX_env *env, pgno_t pgno) { - const size_t offs = pgno2bytes(env, pgno); - const size_t shift = offsetof(MDBX_page, mp_pages); - - if (env->me_flags & MDBX_WRITEMAP) { - MDBX_page *mp = (MDBX_page *)(env->me_map + offs); - memset(&mp->mp_pages, 0x6F /* 'o', 111 */, env->me_psize - shift); - VALGRIND_MAKE_MEM_NOACCESS(&mp->mp_pages, env->me_psize - shift); - ASAN_POISON_MEMORY_REGION(&mp->mp_pages, env->me_psize - shift); - } else { - intptr_t len = env->me_psize - shift; - void *buf = alloca(len); - memset(buf, 0x6F /* 'o', 111 */, len); - (void)mdbx_pwrite(env->me_fd, buf, len, offs + shift); - } -} - -/* Loosen or free a single page. - * - * Saves single pages to a list for future reuse - * in this same txn. It has been pulled from the freeDB - * and already resides on the dirty list, but has been - * deleted. Use these pages first before pulling again - * from the freeDB. - * - * If the page wasn't dirtied in this txn, just add it - * to this txn's free list. */ -static int mdbx_page_loose(MDBX_cursor *mc, MDBX_page *mp) { - int loose = 0; - const pgno_t pgno = mp->mp_pgno; - MDBX_txn *txn = mc->mc_txn; - - if ((mp->mp_flags & P_DIRTY) && mc->mc_dbi != FREE_DBI) { - if (txn->mt_parent) { - mdbx_cassert(mc, (txn->mt_env->me_flags & MDBX_WRITEMAP) == 0); - MDBX_ID2 *dl = txn->mt_rw_dirtylist; - /* If txn has a parent, - * make sure the page is in our dirty list. */ - if (dl[0].mid) { - unsigned x = mdbx_mid2l_search(dl, pgno); - if (x <= dl[0].mid && dl[x].mid == pgno) { - if (unlikely(mp != dl[x].mptr)) { /* bad cursor? */ - mdbx_error("wrong page 0x%p #%" PRIaPGNO - " in the dirtylist[%d], expecting %p", - dl[x].mptr, pgno, x, mp); - mc->mc_flags &= ~(C_INITIALIZED | C_EOF); - txn->mt_flags |= MDBX_TXN_ERROR; - return MDBX_PROBLEM; - } - /* ok, it's ours */ - loose = 1; - } - } - } else { - /* no parent txn, so it's just ours */ - loose = 1; - } - } - if (loose) { - mdbx_debug("loosen db %d page %" PRIaPGNO, DDBI(mc), mp->mp_pgno); - MDBX_page **link = &NEXT_LOOSE_PAGE(mp); - if (unlikely(txn->mt_env->me_flags & MDBX_PAGEPERTURB)) { - mdbx_kill_page(txn->mt_env, pgno); - VALGRIND_MAKE_MEM_UNDEFINED(link, sizeof(MDBX_page *)); - ASAN_UNPOISON_MEMORY_REGION(link, sizeof(MDBX_page *)); - } - *link = txn->mt_loose_pages; - txn->mt_loose_pages = mp; - txn->mt_loose_count++; - mp->mp_flags |= P_LOOSE; - } else { - int rc = mdbx_pnl_append(&txn->mt_befree_pages, pgno); - if (unlikely(rc)) - return rc; - } - - return MDBX_SUCCESS; -} - -/* Set or clear P_KEEP in dirty, non-overflow, non-sub pages watched by txn. - * - * [in] mc A cursor handle for the current operation. - * [in] pflags Flags of the pages to update: - * - P_DIRTY to set P_KEEP, - * - P_DIRTY|P_KEEP to clear it. - * [in] all No shortcuts. Needed except after a full mdbx_page_flush(). - * - * Returns 0 on success, non-zero on failure. */ -static int mdbx_pages_xkeep(MDBX_cursor *mc, unsigned pflags, bool all) { - const unsigned Mask = P_SUBP | P_DIRTY | P_LOOSE | P_KEEP; - MDBX_txn *txn = mc->mc_txn; - MDBX_cursor *m3, *m0 = mc; - MDBX_xcursor *mx; - MDBX_page *dp, *mp; - MDBX_node *leaf; - unsigned i, j; - int rc = MDBX_SUCCESS, level; - - /* Mark pages seen by cursors: First m0, then tracked cursors */ - for (i = txn->mt_numdbs;;) { - if (mc->mc_flags & C_INITIALIZED) { - for (m3 = mc;; m3 = &mx->mx_cursor) { - mp = NULL; - for (j = 0; j < m3->mc_snum; j++) { - mp = m3->mc_pg[j]; - if ((mp->mp_flags & Mask) == pflags) - mp->mp_flags ^= P_KEEP; - } - mx = m3->mc_xcursor; - /* Proceed to mx if it is at a sub-database */ - if (!(mx && (mx->mx_cursor.mc_flags & C_INITIALIZED))) - break; - if (!(mp && (mp->mp_flags & P_LEAF))) - break; - leaf = NODEPTR(mp, m3->mc_ki[j - 1]); - if (!(leaf->mn_flags & F_SUBDATA)) - break; - } - } - mc = mc->mc_next; - for (; !mc || mc == m0; mc = txn->mt_cursors[--i]) - if (i == 0) - goto mark_done; - } - -mark_done: - if (all) { - /* Mark dirty root pages */ - for (i = 0; i < txn->mt_numdbs; i++) { - if (txn->mt_dbflags[i] & DB_DIRTY) { - pgno_t pgno = txn->mt_dbs[i].md_root; - if (pgno == P_INVALID) - continue; - if (unlikely((rc = mdbx_page_get(m0, pgno, &dp, &level)) != - MDBX_SUCCESS)) - break; - if ((dp->mp_flags & Mask) == pflags && level <= 1) - dp->mp_flags ^= P_KEEP; - } - } - } - - return rc; -} - -static int mdbx_page_flush(MDBX_txn *txn, pgno_t keep); - -/* Spill pages from the dirty list back to disk. - * This is intended to prevent running into MDBX_TXN_FULL situations, - * but note that they may still occur in a few cases: - * - * 1) our estimate of the txn size could be too small. Currently this - * seems unlikely, except with a large number of MDBX_MULTIPLE items. - * - * 2) child txns may run out of space if their parents dirtied a - * lot of pages and never spilled them. TODO: we probably should do - * a preemptive spill during mdbx_txn_begin() of a child txn, if - * the parent's dirtyroom is below a given threshold. - * - * Otherwise, if not using nested txns, it is expected that apps will - * not run into MDBX_TXN_FULL any more. The pages are flushed to disk - * the same way as for a txn commit, e.g. their P_DIRTY flag is cleared. - * If the txn never references them again, they can be left alone. - * If the txn only reads them, they can be used without any fuss. - * If the txn writes them again, they can be dirtied immediately without - * going thru all of the work of mdbx_page_touch(). Such references are - * handled by mdbx_page_unspill(). - * - * Also note, we never spill DB root pages, nor pages of active cursors, - * because we'll need these back again soon anyway. And in nested txns, - * we can't spill a page in a child txn if it was already spilled in a - * parent txn. That would alter the parent txns' data even though - * the child hasn't committed yet, and we'd have no way to undo it if - * the child aborted. - * - * [in] m0 cursor A cursor handle identifying the transaction and - * database for which we are checking space. - * [in] key For a put operation, the key being stored. - * [in] data For a put operation, the data being stored. - * - * Returns 0 on success, non-zero on failure. */ -static int mdbx_page_spill(MDBX_cursor *m0, MDBX_val *key, MDBX_val *data) { - MDBX_txn *txn = m0->mc_txn; - MDBX_ID2L dl = txn->mt_rw_dirtylist; - - if (m0->mc_flags & C_SUB) - return MDBX_SUCCESS; - - /* Estimate how much space this op will take */ - pgno_t i = m0->mc_db->md_depth; - /* Named DBs also dirty the main DB */ - if (m0->mc_dbi >= CORE_DBS) - i += txn->mt_dbs[MAIN_DBI].md_depth; - /* For puts, roughly factor in the key+data size */ - if (key) - i += bytes2pgno(txn->mt_env, LEAFSIZE(key, data) + txn->mt_env->me_psize); - i += i; /* double it for good measure */ - pgno_t need = i; - - if (txn->mt_dirtyroom > i) - return MDBX_SUCCESS; - - if (!txn->mt_spill_pages) { - txn->mt_spill_pages = mdbx_pnl_alloc(MDBX_PNL_UM_MAX); - if (unlikely(!txn->mt_spill_pages)) - return MDBX_ENOMEM; - } else { - /* purge deleted slots */ - MDBX_PNL sl = txn->mt_spill_pages; - pgno_t num = sl[0], j = 0; - for (i = 1; i <= num; i++) { - if (!(sl[i] & 1)) - sl[++j] = sl[i]; - } - sl[0] = j; - } - - /* Preserve pages which may soon be dirtied again */ - int rc = mdbx_pages_xkeep(m0, P_DIRTY, true); - if (unlikely(rc != MDBX_SUCCESS)) - goto bailout; - - /* Less aggressive spill - we originally spilled the entire dirty list, - * with a few exceptions for cursor pages and DB root pages. But this - * turns out to be a lot of wasted effort because in a large txn many - * of those pages will need to be used again. So now we spill only 1/8th - * of the dirty pages. Testing revealed this to be a good tradeoff, - * better than 1/2, 1/4, or 1/10. */ - if (need < MDBX_PNL_UM_MAX / 8) - need = MDBX_PNL_UM_MAX / 8; - - /* Save the page IDs of all the pages we're flushing */ - /* flush from the tail forward, this saves a lot of shifting later on. */ - for (i = dl[0].mid; i && need; i--) { - pgno_t pn = dl[i].mid << 1; - MDBX_page *dp = dl[i].mptr; - if (dp->mp_flags & (P_LOOSE | P_KEEP)) - continue; - /* Can't spill twice, - * make sure it's not already in a parent's spill list. */ - if (txn->mt_parent) { - MDBX_txn *tx2; - for (tx2 = txn->mt_parent; tx2; tx2 = tx2->mt_parent) { - if (tx2->mt_spill_pages) { - unsigned j = mdbx_pnl_search(tx2->mt_spill_pages, pn); - if (j <= tx2->mt_spill_pages[0] && tx2->mt_spill_pages[j] == pn) { - dp->mp_flags |= P_KEEP; - break; - } - } - } - if (tx2) - continue; - } - rc = mdbx_pnl_append(&txn->mt_spill_pages, pn); - if (unlikely(rc != MDBX_SUCCESS)) - goto bailout; - need--; - } - mdbx_pnl_sort(txn->mt_spill_pages); - - /* Flush the spilled part of dirty list */ - rc = mdbx_page_flush(txn, i); - if (unlikely(rc != MDBX_SUCCESS)) - goto bailout; - - /* Reset any dirty pages we kept that page_flush didn't see */ - rc = mdbx_pages_xkeep(m0, P_DIRTY | P_KEEP, i != 0); - -bailout: - txn->mt_flags |= rc ? MDBX_TXN_ERROR : MDBX_TXN_SPILLS; - return rc; -} - -/*----------------------------------------------------------------------------*/ - -#define METAPAGE(env, n) (&pgno2page(env, n)->mp_meta) - -#define METAPAGE_END(env) METAPAGE(env, NUM_METAS) - -static __inline txnid_t meta_txnid(const MDBX_env *env, const MDBX_meta *meta, - bool allow_volatile) { - mdbx_assert(env, meta >= METAPAGE(env, 0) || meta < METAPAGE_END(env)); - txnid_t a = meta->mm_txnid_a; - txnid_t b = meta->mm_txnid_b; - if (allow_volatile) - return (a == b) ? a : 0; - mdbx_assert(env, a == b); - return a; -} - -static __inline txnid_t mdbx_meta_txnid_stable(const MDBX_env *env, - const MDBX_meta *meta) { - return meta_txnid(env, meta, false); -} - -static __inline txnid_t mdbx_meta_txnid_fluid(const MDBX_env *env, - const MDBX_meta *meta) { - return meta_txnid(env, meta, true); -} - -static __inline void mdbx_meta_update_begin(const MDBX_env *env, - MDBX_meta *meta, txnid_t txnid) { - mdbx_assert(env, meta >= METAPAGE(env, 0) || meta < METAPAGE_END(env)); - mdbx_assert(env, meta->mm_txnid_a < txnid && meta->mm_txnid_b < txnid); - meta->mm_txnid_a = txnid; - (void)env; - mdbx_coherent_barrier(); -} - -static __inline void mdbx_meta_update_end(const MDBX_env *env, MDBX_meta *meta, - txnid_t txnid) { - mdbx_assert(env, meta >= METAPAGE(env, 0) || meta < METAPAGE_END(env)); - mdbx_assert(env, meta->mm_txnid_a == txnid); - mdbx_assert(env, meta->mm_txnid_b < txnid); - - mdbx_jitter4testing(true); - meta->mm_txnid_b = txnid; - mdbx_coherent_barrier(); -} - -static __inline void mdbx_meta_set_txnid(const MDBX_env *env, MDBX_meta *meta, - txnid_t txnid) { - mdbx_assert(env, meta < METAPAGE(env, 0) || meta > METAPAGE_END(env)); - meta->mm_txnid_a = txnid; - meta->mm_txnid_b = txnid; -} - -static __inline uint64_t mdbx_meta_sign(const MDBX_meta *meta) { - uint64_t sign = MDBX_DATASIGN_NONE; -#if 0 /* TODO */ - sign = hippeus_hash64(...); -#else - (void)meta; -#endif - /* LY: newer returns MDBX_DATASIGN_NONE or MDBX_DATASIGN_WEAK */ - return (sign > MDBX_DATASIGN_WEAK) ? sign : ~sign; -} - -enum meta_choise_mode { prefer_last, prefer_noweak, prefer_steady }; - -static __inline bool mdbx_meta_ot(const enum meta_choise_mode mode, - const MDBX_env *env, const MDBX_meta *a, - const MDBX_meta *b) { - mdbx_jitter4testing(true); - txnid_t txnid_a = mdbx_meta_txnid_fluid(env, a); - txnid_t txnid_b = mdbx_meta_txnid_fluid(env, b); - - mdbx_jitter4testing(true); - switch (mode) { - default: - assert(false); - __unreachable(); - /* fall through */ - __fallthrough; - case prefer_steady: - if (META_IS_STEADY(a) != META_IS_STEADY(b)) - return META_IS_STEADY(b); - /* fall through */ - __fallthrough; - case prefer_noweak: - if (META_IS_WEAK(a) != META_IS_WEAK(b)) - return !META_IS_WEAK(b); - /* fall through */ - __fallthrough; - case prefer_last: - mdbx_jitter4testing(true); - if (txnid_a == txnid_b) - return META_IS_STEADY(b) || (META_IS_WEAK(a) && !META_IS_WEAK(b)); - return txnid_a < txnid_b; - } -} - -static __inline bool mdbx_meta_eq(const MDBX_env *env, const MDBX_meta *a, - const MDBX_meta *b) { - mdbx_jitter4testing(true); - const txnid_t txnid = mdbx_meta_txnid_fluid(env, a); - if (!txnid || txnid != mdbx_meta_txnid_fluid(env, b)) - return false; - - mdbx_jitter4testing(true); - if (META_IS_STEADY(a) != META_IS_STEADY(b)) - return false; - - mdbx_jitter4testing(true); - return true; -} - -static int mdbx_meta_eq_mask(const MDBX_env *env) { - MDBX_meta *m0 = METAPAGE(env, 0); - MDBX_meta *m1 = METAPAGE(env, 1); - MDBX_meta *m2 = METAPAGE(env, 2); - - int rc = mdbx_meta_eq(env, m0, m1) ? 1 : 0; - if (mdbx_meta_eq(env, m1, m2)) - rc += 2; - if (mdbx_meta_eq(env, m2, m0)) - rc += 4; - return rc; -} - -static __inline MDBX_meta *mdbx_meta_recent(const enum meta_choise_mode mode, - const MDBX_env *env, MDBX_meta *a, - MDBX_meta *b) { - const bool a_older_that_b = mdbx_meta_ot(mode, env, a, b); - mdbx_assert(env, !mdbx_meta_eq(env, a, b)); - return a_older_that_b ? b : a; -} - -static __inline MDBX_meta *mdbx_meta_ancient(const enum meta_choise_mode mode, - const MDBX_env *env, MDBX_meta *a, - MDBX_meta *b) { - const bool a_older_that_b = mdbx_meta_ot(mode, env, a, b); - mdbx_assert(env, !mdbx_meta_eq(env, a, b)); - return a_older_that_b ? a : b; -} - -static __inline MDBX_meta * -mdbx_meta_mostrecent(const enum meta_choise_mode mode, const MDBX_env *env) { - MDBX_meta *m0 = METAPAGE(env, 0); - MDBX_meta *m1 = METAPAGE(env, 1); - MDBX_meta *m2 = METAPAGE(env, 2); - - MDBX_meta *head = mdbx_meta_recent(mode, env, m0, m1); - head = mdbx_meta_recent(mode, env, head, m2); - return head; -} - -static __hot MDBX_meta *mdbx_meta_steady(const MDBX_env *env) { - return mdbx_meta_mostrecent(prefer_steady, env); -} - -static __hot MDBX_meta *mdbx_meta_head(const MDBX_env *env) { - return mdbx_meta_mostrecent(prefer_last, env); -} - -static __hot txnid_t mdbx_reclaiming_detent(const MDBX_env *env) { - if (F_ISSET(env->me_flags, MDBX_UTTERLY_NOSYNC)) - return env->me_txn->mt_txnid - 1; - - return mdbx_meta_txnid_stable(env, mdbx_meta_steady(env)); -} - -static const char *mdbx_durable_str(const MDBX_meta *const meta) { - if (META_IS_WEAK(meta)) - return "Weak"; - if (META_IS_STEADY(meta)) - return (meta->mm_datasync_sign == mdbx_meta_sign(meta)) ? "Steady" - : "Tainted"; - return "Legacy"; -} - -/*----------------------------------------------------------------------------*/ - -/* Find oldest txnid still referenced. */ -static txnid_t mdbx_find_oldest(MDBX_txn *txn) { - mdbx_tassert(txn, (txn->mt_flags & MDBX_RDONLY) == 0); - const MDBX_env *env = txn->mt_env; - const txnid_t edge = mdbx_reclaiming_detent(env); - mdbx_tassert(txn, edge <= txn->mt_txnid - 1); - - MDBX_lockinfo *const lck = env->me_lck; - if (unlikely(env->me_lck == NULL /* exclusive mode */)) - return edge; - - const txnid_t last_oldest = lck->mti_oldest; - mdbx_tassert(txn, edge >= last_oldest); - if (likely(last_oldest == edge)) - return edge; - - const uint32_t nothing_changed = MDBX_STRING_TETRAD("None"); - const uint32_t snap_readers_refresh_flag = lck->mti_readers_refresh_flag; - mdbx_jitter4testing(false); - if (snap_readers_refresh_flag == nothing_changed) - return last_oldest; - - txnid_t oldest = edge; - lck->mti_readers_refresh_flag = nothing_changed; - mdbx_coherent_barrier(); - const unsigned snap_nreaders = lck->mti_numreaders; - for (unsigned i = 0; i < snap_nreaders; ++i) { - if (lck->mti_readers[i].mr_pid) { - /* mdbx_jitter4testing(true); */ - const txnid_t snap = lck->mti_readers[i].mr_txnid; - if (oldest > snap && last_oldest <= /* ignore pending updates */ snap) { - oldest = snap; - if (oldest == last_oldest) - return oldest; - } - } - } - - if (oldest != last_oldest) { - mdbx_notice("update oldest %" PRIaTXN " -> %" PRIaTXN, last_oldest, oldest); - mdbx_tassert(txn, oldest >= lck->mti_oldest); - lck->mti_oldest = oldest; - } - return oldest; -} - -/* Add a page to the txn's dirty list */ -static void mdbx_page_dirty(MDBX_txn *txn, MDBX_page *mp) { - MDBX_ID2 mid; - int rc, (*insert)(MDBX_ID2L, MDBX_ID2 *); - - if (txn->mt_flags & MDBX_TXN_WRITEMAP) { - insert = mdbx_mid2l_append; - } else { - insert = mdbx_mid2l_insert; - } - mid.mid = mp->mp_pgno; - mid.mptr = mp; - rc = insert(txn->mt_rw_dirtylist, &mid); - mdbx_tassert(txn, rc == 0); - txn->mt_dirtyroom--; -} - -static int mdbx_mapresize(MDBX_env *env, const pgno_t size_pgno, - const pgno_t limit_pgno) { -#ifdef USE_VALGRIND - const size_t prev_mapsize = env->me_mapsize; - void *const prev_mapaddr = env->me_map; -#endif - - const size_t limit_bytes = pgno_align2os_bytes(env, limit_pgno); - const size_t size_bytes = pgno_align2os_bytes(env, size_pgno); - - mdbx_info("resize datafile/mapping: " - "present %" PRIuPTR " -> %" PRIuPTR ", " - "limit %" PRIuPTR " -> %" PRIuPTR, - env->me_dbgeo.now, size_bytes, env->me_dbgeo.upper, limit_bytes); - - mdbx_assert(env, limit_bytes >= size_bytes); - mdbx_assert(env, bytes2pgno(env, size_bytes) == size_pgno); - mdbx_assert(env, bytes2pgno(env, limit_bytes) == limit_pgno); - -#if defined(_WIN32) || defined(_WIN64) - /* Acquire guard in exclusive mode for: - * - to avoid collision between read and write txns around env->me_dbgeo; - * - to avoid attachment of new reading threads (see mdbx_rdt_lock); */ - mdbx_srwlock_AcquireExclusive(&env->me_remap_guard); - mdbx_handle_array_t *suspended = NULL; - mdbx_handle_array_t array_onstack; - int rc = MDBX_SUCCESS; - if (limit_bytes == env->me_dxb_mmap.length && - size_bytes == env->me_dxb_mmap.current && - env->me_dxb_mmap.current == env->me_dxb_mmap.filesize) - goto bailout; - - if ((env->me_flags & MDBX_RDONLY) || limit_bytes != env->me_dxb_mmap.length || - size_bytes < env->me_dxb_mmap.current) { - /* Windows allows only extending a read-write section, but not a - * corresponing mapped view. Therefore in other cases we must suspend - * the local threads for safe remap. */ - array_onstack.limit = ARRAY_LENGTH(array_onstack.handles); - array_onstack.count = 0; - suspended = &array_onstack; - rc = mdbx_suspend_threads_before_remap(env, &suspended); - if (rc != MDBX_SUCCESS) { - mdbx_error("failed suspend-for-remap: errcode %d", rc); - goto bailout; - } - } -#else - /* Acquire guard to avoid collision between read and write txns - * around env->me_dbgeo */ - int rc = mdbx_fastmutex_acquire(&env->me_remap_guard); - if (rc != MDBX_SUCCESS) - return rc; - if (limit_bytes == env->me_dxb_mmap.length && - bytes2pgno(env, size_bytes) == env->me_dbgeo.now) - goto bailout; -#endif /* Windows */ - - rc = mdbx_mresize(env->me_flags, &env->me_dxb_mmap, size_bytes, limit_bytes); - -bailout: - if (rc == MDBX_SUCCESS) { -#if defined(_WIN32) || defined(_WIN64) - assert(size_bytes == env->me_dxb_mmap.current); - assert(size_bytes <= env->me_dxb_mmap.filesize); - assert(limit_bytes == env->me_dxb_mmap.length); -#endif - env->me_dbgeo.now = size_bytes; - env->me_dbgeo.upper = limit_bytes; - if (env->me_txn) { - mdbx_tassert(env->me_txn, size_pgno >= env->me_txn->mt_next_pgno); - env->me_txn->mt_end_pgno = size_pgno; - } -#ifdef USE_VALGRIND - if (prev_mapsize != env->me_mapsize || prev_mapaddr != env->me_map) { - VALGRIND_DISCARD(env->me_valgrind_handle); - env->me_valgrind_handle = 0; - if (env->me_mapsize) - env->me_valgrind_handle = - VALGRIND_CREATE_BLOCK(env->me_map, env->me_mapsize, "mdbx"); - } -#endif - } else if (rc != MDBX_RESULT_TRUE) { - mdbx_error("failed resize datafile/mapping: " - "present %" PRIuPTR " -> %" PRIuPTR ", " - "limit %" PRIuPTR " -> %" PRIuPTR ", errcode %d", - env->me_dbgeo.now, size_bytes, env->me_dbgeo.upper, limit_bytes, - rc); - } else { - mdbx_notice("unable resize datafile/mapping: " - "present %" PRIuPTR " -> %" PRIuPTR ", " - "limit %" PRIuPTR " -> %" PRIuPTR ", errcode %d", - env->me_dbgeo.now, size_bytes, env->me_dbgeo.upper, limit_bytes, - rc); - if (!env->me_dxb_mmap.address) { - env->me_flags |= MDBX_FATAL_ERROR; - if (env->me_txn) - env->me_txn->mt_flags |= MDBX_TXN_ERROR; - rc = MDBX_PANIC; - } - } - -#if defined(_WIN32) || defined(_WIN64) - int err = MDBX_SUCCESS; - mdbx_srwlock_ReleaseExclusive(&env->me_remap_guard); - if (suspended) { - err = mdbx_resume_threads_after_remap(suspended); - if (suspended != &array_onstack) - free(suspended); - } -#else - int err = mdbx_fastmutex_release(&env->me_remap_guard); -#endif /* Windows */ - if (err != MDBX_SUCCESS) { - mdbx_fatal("failed resume-after-remap: errcode %d", err); - return MDBX_PANIC; - } - return rc; -} - -/* Allocate page numbers and memory for writing. Maintain me_last_reclaimed, - * me_reclaimed_pglist and mt_next_pgno. Set MDBX_TXN_ERROR on failure. - * - * If there are free pages available from older transactions, they - * are re-used first. Otherwise allocate a new page at mt_next_pgno. - * Do not modify the freedB, just merge freeDB records into me_reclaimed_pglist - * and move me_last_reclaimed to say which records were consumed. Only this - * function can create me_reclaimed_pglist and move - * me_last_reclaimed/mt_next_pgno. - * - * [in] mc cursor A cursor handle identifying the transaction and - * database for which we are allocating. - * [in] num the number of pages to allocate. - * [out] mp Address of the allocated page(s). Requests for multiple pages - * will always be satisfied by a single contiguous chunk of memory. - * - * Returns 0 on success, non-zero on failure.*/ - -#define MDBX_ALLOC_CACHE 1 -#define MDBX_ALLOC_GC 2 -#define MDBX_ALLOC_NEW 4 -#define MDBX_ALLOC_KICK 8 -#define MDBX_ALLOC_ALL \ - (MDBX_ALLOC_CACHE | MDBX_ALLOC_GC | MDBX_ALLOC_NEW | MDBX_ALLOC_KICK) - -static int mdbx_page_alloc(MDBX_cursor *mc, unsigned num, MDBX_page **mp, - int flags) { - int rc; - MDBX_txn *txn = mc->mc_txn; - MDBX_env *env = txn->mt_env; - MDBX_page *np; - - if (likely(flags & MDBX_ALLOC_GC)) { - flags |= env->me_flags & (MDBX_COALESCE | MDBX_LIFORECLAIM); - if (unlikely(mc->mc_flags & C_RECLAIMING)) { - /* If mc is updating the freeDB, then the freelist cannot play - * catch-up with itself by growing while trying to save it. */ - flags &= - ~(MDBX_ALLOC_GC | MDBX_ALLOC_KICK | MDBX_COALESCE | MDBX_LIFORECLAIM); - } else if (unlikely(txn->mt_dbs[FREE_DBI].md_entries == 0)) { - /* avoid (recursive) search inside empty tree and while tree is updating, - * https://github.com/leo-yuriev/libmdbx/issues/31 */ - flags &= ~MDBX_ALLOC_GC; - } - } - - if (likely(flags & MDBX_ALLOC_CACHE)) { - /* If there are any loose pages, just use them */ - assert(mp && num); - if (likely(num == 1 && txn->mt_loose_pages)) { - np = txn->mt_loose_pages; - txn->mt_loose_pages = NEXT_LOOSE_PAGE(np); - txn->mt_loose_count--; - mdbx_debug("db %d use loose page %" PRIaPGNO, DDBI(mc), np->mp_pgno); - ASAN_UNPOISON_MEMORY_REGION(np, env->me_psize); - mdbx_tassert(txn, np->mp_pgno < txn->mt_next_pgno); - mdbx_ensure(env, np->mp_pgno >= NUM_METAS); - *mp = np; - return MDBX_SUCCESS; - } - } - - mdbx_tassert(txn, mdbx_pnl_check(env->me_reclaimed_pglist)); - pgno_t pgno, *repg_list = env->me_reclaimed_pglist; - unsigned repg_pos = 0, repg_len = repg_list ? repg_list[0] : 0; - txnid_t oldest = 0, last = 0; - const unsigned wanna_range = num - 1; - - while (1) { /* oom-kick retry loop */ - /* If our dirty list is already full, we can't do anything */ - if (unlikely(txn->mt_dirtyroom == 0)) { - rc = MDBX_TXN_FULL; - goto fail; - } - - MDBX_cursor recur; - for (MDBX_cursor_op op = MDBX_FIRST;; - op = (flags & MDBX_LIFORECLAIM) ? MDBX_PREV : MDBX_NEXT) { - MDBX_val key, data; - - /* Seek a big enough contiguous page range. - * Prefer pages with lower pgno. */ - mdbx_tassert(txn, mdbx_pnl_check(env->me_reclaimed_pglist)); - if (likely(flags & MDBX_ALLOC_CACHE) && repg_len > wanna_range && - (!(flags & MDBX_COALESCE) || op == MDBX_FIRST)) { -#if MDBX_PNL_ASCENDING - for (repg_pos = 1; repg_pos <= repg_len - wanna_range; ++repg_pos) { - pgno = repg_list[repg_pos]; - if (likely(repg_list[repg_pos + wanna_range - 1] == - pgno + wanna_range - 1)) - goto done; - } -#else - repg_pos = repg_len; - do { - pgno = repg_list[repg_pos]; - if (likely(repg_list[repg_pos - wanna_range] == pgno + wanna_range)) - goto done; - } while (--repg_pos > wanna_range); -#endif /* MDBX_PNL sort-order */ - } - - if (op == MDBX_FIRST) { /* 1st iteration, setup cursor, etc */ - if (unlikely(!(flags & MDBX_ALLOC_GC))) - break /* reclaiming is prohibited for now */; - - /* Prepare to fetch more and coalesce */ - oldest = (flags & MDBX_LIFORECLAIM) ? mdbx_find_oldest(txn) - : env->me_oldest[0]; - rc = mdbx_cursor_init(&recur, txn, FREE_DBI, NULL); - if (unlikely(rc != MDBX_SUCCESS)) - goto fail; - if (flags & MDBX_LIFORECLAIM) { - /* Begin from oldest reader if any */ - if (oldest > 2) { - last = oldest - 1; - op = MDBX_SET_RANGE; - } - } else if (env->me_last_reclaimed) { - /* Continue lookup from env->me_last_reclaimed to oldest reader */ - last = env->me_last_reclaimed; - op = MDBX_SET_RANGE; - } - - key.iov_base = &last; - key.iov_len = sizeof(last); - } - - if (!(flags & MDBX_LIFORECLAIM)) { - /* Do not try fetch more if the record will be too recent */ - if (op != MDBX_FIRST && ++last >= oldest) { - oldest = mdbx_find_oldest(txn); - if (oldest <= last) - break; - } - } - - rc = mdbx_cursor_get(&recur, &key, NULL, op); - if (rc == MDBX_NOTFOUND && (flags & MDBX_LIFORECLAIM)) { - if (op == MDBX_SET_RANGE) - continue; - if (oldest < mdbx_find_oldest(txn)) { - oldest = *env->me_oldest; - last = oldest - 1; - key.iov_base = &last; - key.iov_len = sizeof(last); - op = MDBX_SET_RANGE; - rc = mdbx_cursor_get(&recur, &key, NULL, op); - } - } - if (unlikely(rc)) { - if (rc == MDBX_NOTFOUND) - break; - goto fail; - } - - last = *(txnid_t *)key.iov_base; - if (oldest <= last) { - oldest = mdbx_find_oldest(txn); - if (oldest <= last) { - if (flags & MDBX_LIFORECLAIM) - continue; - break; - } - } - - if (flags & MDBX_LIFORECLAIM) { - /* skip IDs of records that already reclaimed */ - if (txn->mt_lifo_reclaimed) { - unsigned i; - for (i = (unsigned)txn->mt_lifo_reclaimed[0]; i > 0; --i) - if (txn->mt_lifo_reclaimed[i] == last) - break; - if (i) - continue; - } - } - - /* Reading next FreeDB record */ - np = recur.mc_pg[recur.mc_top]; - MDBX_node *leaf = NODEPTR(np, recur.mc_ki[recur.mc_top]); - if (unlikely((rc = mdbx_node_read(&recur, leaf, &data)) != MDBX_SUCCESS)) - goto fail; - - if ((flags & MDBX_LIFORECLAIM) && !txn->mt_lifo_reclaimed) { - txn->mt_lifo_reclaimed = mdbx_txl_alloc(); - if (unlikely(!txn->mt_lifo_reclaimed)) { - rc = MDBX_ENOMEM; - goto fail; - } - } - - /* Append PNL from FreeDB record to me_reclaimed_pglist */ - pgno_t *re_pnl = (pgno_t *)data.iov_base; - mdbx_tassert(txn, re_pnl[0] == 0 || - data.iov_len == (re_pnl[0] + 1) * sizeof(pgno_t)); - mdbx_tassert(txn, mdbx_pnl_check(re_pnl)); - repg_pos = re_pnl[0]; - if (!repg_list) { - if (unlikely(!(env->me_reclaimed_pglist = repg_list = - mdbx_pnl_alloc(repg_pos)))) { - rc = MDBX_ENOMEM; - goto fail; - } - } else { - if (unlikely( - (rc = mdbx_pnl_need(&env->me_reclaimed_pglist, repg_pos)) != 0)) - goto fail; - repg_list = env->me_reclaimed_pglist; - } - - /* Remember ID of FreeDB record */ - if (flags & MDBX_LIFORECLAIM) { - if ((rc = mdbx_txl_append(&txn->mt_lifo_reclaimed, last)) != 0) - goto fail; - } - env->me_last_reclaimed = last; - - if (mdbx_debug_enabled(MDBX_DBG_EXTRA)) { - mdbx_debug_extra("PNL read txn %" PRIaTXN " root %" PRIaPGNO - " num %u, PNL", - last, txn->mt_dbs[FREE_DBI].md_root, repg_pos); - unsigned i; - for (i = repg_pos; i; i--) - mdbx_debug_extra_print(" %" PRIaPGNO "", re_pnl[i]); - mdbx_debug_extra_print("\n"); - } - - /* Merge in descending sorted order */ - mdbx_pnl_xmerge(repg_list, re_pnl); - repg_len = repg_list[0]; - if (unlikely((flags & MDBX_ALLOC_CACHE) == 0)) { - /* Done for a kick-reclaim mode, actually no page needed */ - return MDBX_SUCCESS; - } - - mdbx_tassert(txn, - repg_len == 0 || repg_list[repg_len] < txn->mt_next_pgno); - if (repg_len) { - /* Refund suitable pages into "unallocated" space */ - pgno_t tail = txn->mt_next_pgno; - pgno_t *const begin = repg_list + 1; - pgno_t *const end = begin + repg_len; - pgno_t *higest; -#if MDBX_PNL_ASCENDING - for (higest = end; --higest >= begin;) { -#else - for (higest = begin; higest < end; ++higest) { -#endif /* MDBX_PNL sort-order */ - mdbx_tassert(txn, *higest >= NUM_METAS && *higest < tail); - if (*higest != tail - 1) - break; - tail -= 1; - } - if (tail != txn->mt_next_pgno) { -#if MDBX_PNL_ASCENDING - repg_len = (unsigned)(higest + 1 - begin); -#else - repg_len -= (unsigned)(higest - begin); - for (pgno_t *move = begin; higest < end; ++move, ++higest) - *move = *higest; -#endif /* MDBX_PNL sort-order */ - repg_list[0] = repg_len; - mdbx_info("refunded %" PRIaPGNO " pages: %" PRIaPGNO " -> %" PRIaPGNO, - tail - txn->mt_next_pgno, tail, txn->mt_next_pgno); - txn->mt_next_pgno = tail; - mdbx_tassert(txn, mdbx_pnl_check(env->me_reclaimed_pglist)); - } - } - - /* Don't try to coalesce too much. */ - if (repg_len > MDBX_PNL_UM_SIZE / 2) - break; - if (flags & MDBX_COALESCE) { - if (repg_len /* current size */ >= env->me_maxfree_1pg / 2 || - repg_pos /* prev size */ >= env->me_maxfree_1pg / 4) - flags &= ~MDBX_COALESCE; - } - } - - if ((flags & (MDBX_COALESCE | MDBX_ALLOC_CACHE)) == - (MDBX_COALESCE | MDBX_ALLOC_CACHE) && - repg_len > wanna_range) { -#if MDBX_PNL_ASCENDING - for (repg_pos = 1; repg_pos <= repg_len - wanna_range; ++repg_pos) { - pgno = repg_list[repg_pos]; - if (likely(repg_list[repg_pos + wanna_range - 1] == - pgno + wanna_range - 1)) - goto done; - } -#else - repg_pos = repg_len; - do { - pgno = repg_list[repg_pos]; - if (likely(repg_list[repg_pos - wanna_range] == pgno + wanna_range)) - goto done; - } while (--repg_pos > wanna_range); -#endif /* MDBX_PNL sort-order */ - } - - /* Use new pages from the map when nothing suitable in the freeDB */ - repg_pos = 0; - pgno = txn->mt_next_pgno; - rc = MDBX_MAP_FULL; - const pgno_t next = pgno_add(pgno, num); - if (likely(next <= txn->mt_end_pgno)) { - rc = MDBX_NOTFOUND; - if (likely(flags & MDBX_ALLOC_NEW)) - goto done; - } - - const MDBX_meta *head = mdbx_meta_head(env); - if ((flags & MDBX_ALLOC_GC) && - ((flags & MDBX_ALLOC_KICK) || rc == MDBX_MAP_FULL)) { - MDBX_meta *steady = mdbx_meta_steady(env); - - if (oldest == mdbx_meta_txnid_stable(env, steady) && - !META_IS_STEADY(head) && META_IS_STEADY(steady)) { - /* LY: Here an oom was happened: - * - all pages had allocated; - * - reclaiming was stopped at the last steady-sync; - * - the head-sync is weak. - * Now we need make a sync to resume reclaiming. If both - * MDBX_NOSYNC and MDBX_MAPASYNC flags are set, then assume that - * utterly no-sync write mode was requested. In such case - * don't make a steady-sync, but only a legacy-mode checkpoint, - * just for resume reclaiming only, not for data consistency. */ - - mdbx_debug("kick-gc: head %" PRIaTXN "-%s, tail %" PRIaTXN - "-%s, oldest %" PRIaTXN "", - mdbx_meta_txnid_stable(env, head), mdbx_durable_str(head), - mdbx_meta_txnid_stable(env, steady), - mdbx_durable_str(steady), oldest); - - const unsigned syncflags = F_ISSET(env->me_flags, MDBX_UTTERLY_NOSYNC) - ? env->me_flags - : env->me_flags & MDBX_WRITEMAP; - MDBX_meta meta = *head; - if (mdbx_sync_locked(env, syncflags, &meta) == MDBX_SUCCESS) { - txnid_t snap = mdbx_find_oldest(txn); - if (snap > oldest) - continue; - } - } - - if (rc == MDBX_MAP_FULL && oldest < txn->mt_txnid - 1) { - if (mdbx_oomkick(env, oldest) > oldest) - continue; - } - } - - if (rc == MDBX_MAP_FULL && next < head->mm_geo.upper) { - mdbx_assert(env, next > txn->mt_end_pgno); - pgno_t aligned = pgno_align2os_pgno( - env, pgno_add(next, head->mm_geo.grow - next % head->mm_geo.grow)); - - if (aligned > head->mm_geo.upper) - aligned = head->mm_geo.upper; - mdbx_assert(env, aligned > txn->mt_end_pgno); - - mdbx_info("try growth datafile to %" PRIaPGNO " pages (+%" PRIaPGNO ")", - aligned, aligned - txn->mt_end_pgno); - rc = mdbx_mapresize(env, aligned, head->mm_geo.upper); - if (rc == MDBX_SUCCESS) { - mdbx_tassert(env->me_txn, txn->mt_end_pgno >= next); - if (!mp) - return rc; - goto done; - } - - mdbx_warning("unable growth datafile to %" PRIaPGNO "pages (+%" PRIaPGNO - "), errcode %d", - aligned, aligned - txn->mt_end_pgno, rc); - } - - fail: - mdbx_tassert(txn, mdbx_pnl_check(env->me_reclaimed_pglist)); - if (mp) { - *mp = NULL; - txn->mt_flags |= MDBX_TXN_ERROR; - } - assert(rc); - return rc; - } - -done: - mdbx_tassert(txn, mp && num); - mdbx_ensure(env, pgno >= NUM_METAS); - if (env->me_flags & MDBX_WRITEMAP) { - np = pgno2page(env, pgno); - /* LY: reset no-access flag from mdbx_kill_page() */ - VALGRIND_MAKE_MEM_UNDEFINED(np, pgno2bytes(env, num)); - ASAN_UNPOISON_MEMORY_REGION(np, pgno2bytes(env, num)); - } else { - if (unlikely(!(np = mdbx_page_malloc(txn, num)))) { - rc = MDBX_ENOMEM; - goto fail; - } - } - - if (repg_pos) { - mdbx_tassert(txn, pgno < txn->mt_next_pgno); - mdbx_tassert(txn, pgno == repg_list[repg_pos]); - /* Cutoff allocated pages from me_reclaimed_pglist */ - repg_list[0] = repg_len -= num; - for (unsigned i = repg_pos - num; i < repg_len;) - repg_list[++i] = repg_list[++repg_pos]; - mdbx_tassert(txn, mdbx_pnl_check(env->me_reclaimed_pglist)); - } else { - txn->mt_next_pgno = pgno + num; - mdbx_assert(env, txn->mt_next_pgno <= txn->mt_end_pgno); - } - - if (env->me_flags & MDBX_PAGEPERTURB) - memset(np, 0x71 /* 'q', 113 */, pgno2bytes(env, num)); - VALGRIND_MAKE_MEM_UNDEFINED(np, pgno2bytes(env, num)); - - np->mp_pgno = pgno; - np->mp_leaf2_ksize = 0; - np->mp_flags = 0; - np->mp_pages = num; - mdbx_page_dirty(txn, np); - *mp = np; - - mdbx_tassert(txn, mdbx_pnl_check(env->me_reclaimed_pglist)); - return MDBX_SUCCESS; -} - -/* Copy the used portions of a non-overflow page. - * [in] dst page to copy into - * [in] src page to copy from - * [in] psize size of a page */ -static void mdbx_page_copy(MDBX_page *dst, MDBX_page *src, unsigned psize) { - STATIC_ASSERT(UINT16_MAX > MAX_PAGESIZE - PAGEHDRSZ); - STATIC_ASSERT(MIN_PAGESIZE > PAGEHDRSZ + NODESIZE * 42); - enum { Align = sizeof(pgno_t) }; - indx_t upper = src->mp_upper, lower = src->mp_lower, unused = upper - lower; - - /* If page isn't full, just copy the used portion. Adjust - * alignment so memcpy may copy words instead of bytes. */ - if ((unused &= -Align) && !IS_LEAF2(src)) { - upper = (upper + PAGEHDRSZ) & -Align; - memcpy(dst, src, (lower + PAGEHDRSZ + (Align - 1)) & -Align); - memcpy((pgno_t *)((char *)dst + upper), (pgno_t *)((char *)src + upper), - psize - upper); - } else { - memcpy(dst, src, psize - unused); - } -} - -/* Pull a page off the txn's spill list, if present. - * - * If a page being referenced was spilled to disk in this txn, bring - * it back and make it dirty/writable again. - * - * [in] txn the transaction handle. - * [in] mp the page being referenced. It must not be dirty. - * [out] ret the writable page, if any. - * ret is unchanged if mp wasn't spilled. */ -static int mdbx_page_unspill(MDBX_txn *txn, MDBX_page *mp, MDBX_page **ret) { - MDBX_env *env = txn->mt_env; - const MDBX_txn *tx2; - unsigned x; - pgno_t pgno = mp->mp_pgno, pn = pgno << 1; - - for (tx2 = txn; tx2; tx2 = tx2->mt_parent) { - if (!tx2->mt_spill_pages) - continue; - x = mdbx_pnl_search(tx2->mt_spill_pages, pn); - if (x <= tx2->mt_spill_pages[0] && tx2->mt_spill_pages[x] == pn) { - MDBX_page *np; - int num; - if (txn->mt_dirtyroom == 0) - return MDBX_TXN_FULL; - num = IS_OVERFLOW(mp) ? mp->mp_pages : 1; - if (env->me_flags & MDBX_WRITEMAP) { - np = mp; - } else { - np = mdbx_page_malloc(txn, num); - if (unlikely(!np)) - return MDBX_ENOMEM; - if (unlikely(num > 1)) - memcpy(np, mp, pgno2bytes(env, num)); - else - mdbx_page_copy(np, mp, env->me_psize); - } - mdbx_debug("unspill page %" PRIaPGNO, mp->mp_pgno); - if (tx2 == txn) { - /* If in current txn, this page is no longer spilled. - * If it happens to be the last page, truncate the spill list. - * Otherwise mark it as deleted by setting the LSB. */ - if (x == txn->mt_spill_pages[0]) - txn->mt_spill_pages[0]--; - else - txn->mt_spill_pages[x] |= 1; - } /* otherwise, if belonging to a parent txn, the - * page remains spilled until child commits */ - - mdbx_page_dirty(txn, np); - np->mp_flags |= P_DIRTY; - *ret = np; - break; - } - } - return MDBX_SUCCESS; -} - -/* Touch a page: make it dirty and re-insert into tree with updated pgno. - * Set MDBX_TXN_ERROR on failure. - * - * [in] mc cursor pointing to the page to be touched - * - * Returns 0 on success, non-zero on failure. */ -static int mdbx_page_touch(MDBX_cursor *mc) { - MDBX_page *mp = mc->mc_pg[mc->mc_top], *np; - MDBX_txn *txn = mc->mc_txn; - MDBX_cursor *m2, *m3; - pgno_t pgno; - int rc; - - mdbx_cassert(mc, !IS_OVERFLOW(mp)); - if (!F_ISSET(mp->mp_flags, P_DIRTY)) { - if (txn->mt_flags & MDBX_TXN_SPILLS) { - np = NULL; - rc = mdbx_page_unspill(txn, mp, &np); - if (unlikely(rc)) - goto fail; - if (likely(np)) - goto done; - } - - if (unlikely((rc = mdbx_pnl_need(&txn->mt_befree_pages, 1)) || - (rc = mdbx_page_alloc(mc, 1, &np, MDBX_ALLOC_ALL)))) - goto fail; - pgno = np->mp_pgno; - mdbx_debug("touched db %d page %" PRIaPGNO " -> %" PRIaPGNO, DDBI(mc), - mp->mp_pgno, pgno); - mdbx_cassert(mc, mp->mp_pgno != pgno); - mdbx_pnl_xappend(txn->mt_befree_pages, mp->mp_pgno); - /* Update the parent page, if any, to point to the new page */ - if (mc->mc_top) { - MDBX_page *parent = mc->mc_pg[mc->mc_top - 1]; - MDBX_node *node = NODEPTR(parent, mc->mc_ki[mc->mc_top - 1]); - SETPGNO(node, pgno); - } else { - mc->mc_db->md_root = pgno; - } - } else if (txn->mt_parent && !IS_SUBP(mp)) { - mdbx_tassert(txn, (txn->mt_env->me_flags & MDBX_WRITEMAP) == 0); - MDBX_ID2 mid, *dl = txn->mt_rw_dirtylist; - pgno = mp->mp_pgno; - /* If txn has a parent, make sure the page is in our dirty list. */ - if (dl[0].mid) { - unsigned x = mdbx_mid2l_search(dl, pgno); - if (x <= dl[0].mid && dl[x].mid == pgno) { - if (unlikely(mp != dl[x].mptr)) { /* bad cursor? */ - mdbx_error("wrong page 0x%p #%" PRIaPGNO - " in the dirtylist[%d], expecting %p", - dl[x].mptr, pgno, x, mp); - mc->mc_flags &= ~(C_INITIALIZED | C_EOF); - txn->mt_flags |= MDBX_TXN_ERROR; - return MDBX_PROBLEM; - } - return MDBX_SUCCESS; - } - } - - mdbx_debug("clone db %d page %" PRIaPGNO, DDBI(mc), mp->mp_pgno); - mdbx_cassert(mc, dl[0].mid < MDBX_PNL_UM_MAX); - /* No - copy it */ - np = mdbx_page_malloc(txn, 1); - if (unlikely(!np)) - return MDBX_ENOMEM; - mid.mid = pgno; - mid.mptr = np; - rc = mdbx_mid2l_insert(dl, &mid); - mdbx_cassert(mc, rc == 0); - } else { - return MDBX_SUCCESS; - } - - mdbx_page_copy(np, mp, txn->mt_env->me_psize); - np->mp_pgno = pgno; - np->mp_flags |= P_DIRTY; - -done: - /* Adjust cursors pointing to mp */ - mc->mc_pg[mc->mc_top] = np; - m2 = txn->mt_cursors[mc->mc_dbi]; - if (mc->mc_flags & C_SUB) { - for (; m2; m2 = m2->mc_next) { - m3 = &m2->mc_xcursor->mx_cursor; - if (m3->mc_snum < mc->mc_snum) - continue; - if (m3->mc_pg[mc->mc_top] == mp) - m3->mc_pg[mc->mc_top] = np; - } - } else { - for (; m2; m2 = m2->mc_next) { - if (m2->mc_snum < mc->mc_snum) - continue; - if (m2 == mc) - continue; - if (m2->mc_pg[mc->mc_top] == mp) { - m2->mc_pg[mc->mc_top] = np; - if (XCURSOR_INITED(m2) && IS_LEAF(np)) - XCURSOR_REFRESH(m2, np, m2->mc_ki[mc->mc_top]); - } - } - } - return MDBX_SUCCESS; - -fail: - txn->mt_flags |= MDBX_TXN_ERROR; - return rc; -} - -static int mdbx_env_sync_ex(MDBX_env *env, int force, int nonblock) { - if (unlikely(!env)) - return MDBX_EINVAL; - - if (unlikely(env->me_signature != MDBX_ME_SIGNATURE)) - return MDBX_EBADSIGN; - - unsigned flags = env->me_flags & ~MDBX_NOMETASYNC; - if (unlikely(flags & (MDBX_RDONLY | MDBX_FATAL_ERROR))) - return MDBX_EACCESS; - - const bool outside_txn = - (!env->me_txn0 || env->me_txn0->mt_owner != mdbx_thread_self()); - - if (outside_txn) { - int rc = mdbx_txn_lock(env, nonblock); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - } - - MDBX_meta *head = mdbx_meta_head(env); - if (!META_IS_STEADY(head) || env->me_sync_pending) { - - if (force || (env->me_sync_threshold && - env->me_sync_pending >= env->me_sync_threshold)) - flags &= MDBX_WRITEMAP /* clear flags for full steady sync */; - - if (outside_txn && - env->me_sync_pending > - pgno2bytes(env, 16 /* FIXME: define threshold */) && - (flags & MDBX_NOSYNC) == 0) { - assert(((flags ^ env->me_flags) & MDBX_WRITEMAP) == 0); - const size_t usedbytes = pgno_align2os_bytes(env, head->mm_geo.next); - - mdbx_txn_unlock(env); - - /* LY: pre-sync without holding lock to reduce latency for writer(s) */ - int rc = (flags & MDBX_WRITEMAP) - ? mdbx_msync(&env->me_dxb_mmap, 0, usedbytes, - flags & MDBX_MAPASYNC) - : mdbx_filesync(env->me_fd, false); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - - rc = mdbx_txn_lock(env, nonblock); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - - /* LY: head may be changed. */ - head = mdbx_meta_head(env); - } - - if (!META_IS_STEADY(head) || env->me_sync_pending) { - mdbx_debug("meta-head %" PRIaPGNO ", %s, sync_pending %" PRIuPTR, - container_of(head, MDBX_page, mp_data)->mp_pgno, - mdbx_durable_str(head), env->me_sync_pending); - MDBX_meta meta = *head; - int rc = mdbx_sync_locked(env, flags | MDBX_SHRINK_ALLOWED, &meta); - if (unlikely(rc != MDBX_SUCCESS)) { - if (outside_txn) - mdbx_txn_unlock(env); - return rc; - } - } - } - - if (outside_txn) - mdbx_txn_unlock(env); - return MDBX_SUCCESS; -} - -int mdbx_env_sync(MDBX_env *env, int force) { - return mdbx_env_sync_ex(env, force, false); -} - -/* Back up parent txn's cursors, then grab the originals for tracking */ -static int mdbx_cursor_shadow(MDBX_txn *src, MDBX_txn *dst) { - MDBX_cursor *mc, *bk; - MDBX_xcursor *mx; - size_t size; - int i; - - for (i = src->mt_numdbs; --i >= 0;) { - if ((mc = src->mt_cursors[i]) != NULL) { - size = sizeof(MDBX_cursor); - if (mc->mc_xcursor) - size += sizeof(MDBX_xcursor); - for (; mc; mc = bk->mc_next) { - bk = malloc(size); - if (unlikely(!bk)) - return MDBX_ENOMEM; - *bk = *mc; - mc->mc_backup = bk; - mc->mc_db = &dst->mt_dbs[i]; - /* Kill pointers into src to reduce abuse: The - * user may not use mc until dst ends. But we need a valid - * txn pointer here for cursor fixups to keep working. */ - mc->mc_txn = dst; - mc->mc_dbflag = &dst->mt_dbflags[i]; - if ((mx = mc->mc_xcursor) != NULL) { - *(MDBX_xcursor *)(bk + 1) = *mx; - mx->mx_cursor.mc_txn = dst; - } - mc->mc_next = dst->mt_cursors[i]; - dst->mt_cursors[i] = mc; - } - } - } - return MDBX_SUCCESS; -} - -/* Close this write txn's cursors, give parent txn's cursors back to parent. - * - * [in] txn the transaction handle. - * [in] merge true to keep changes to parent cursors, false to revert. - * - * Returns 0 on success, non-zero on failure. */ -static void mdbx_cursors_eot(MDBX_txn *txn, unsigned merge) { - MDBX_cursor **cursors = txn->mt_cursors, *mc, *next, *bk; - MDBX_xcursor *mx; - int i; - - for (i = txn->mt_numdbs; --i >= 0;) { - for (mc = cursors[i]; mc; mc = next) { - unsigned stage = mc->mc_signature; - mdbx_ensure(NULL, - stage == MDBX_MC_SIGNATURE || stage == MDBX_MC_WAIT4EOT); - next = mc->mc_next; - if ((bk = mc->mc_backup) != NULL) { - if (merge) { - /* Commit changes to parent txn */ - mc->mc_next = bk->mc_next; - mc->mc_backup = bk->mc_backup; - mc->mc_txn = bk->mc_txn; - mc->mc_db = bk->mc_db; - mc->mc_dbflag = bk->mc_dbflag; - if ((mx = mc->mc_xcursor) != NULL) - mx->mx_cursor.mc_txn = bk->mc_txn; - } else { - /* Abort nested txn */ - *mc = *bk; - if ((mx = mc->mc_xcursor) != NULL) - *mx = *(MDBX_xcursor *)(bk + 1); - } - bk->mc_signature = 0; - free(bk); - } - if (stage == MDBX_MC_WAIT4EOT) { - mc->mc_signature = 0; - free(mc); - } else { - mc->mc_signature = MDBX_MC_READY4CLOSE; - mc->mc_flags = 0 /* reset C_UNTRACK */; - } - } - cursors[i] = NULL; - } -} - -/* Common code for mdbx_txn_begin() and mdbx_txn_renew(). */ -static int mdbx_txn_renew0(MDBX_txn *txn, unsigned flags) { - MDBX_env *env = txn->mt_env; - int rc; - - if (unlikely(env->me_pid != mdbx_getpid())) { - env->me_flags |= MDBX_FATAL_ERROR; - return MDBX_PANIC; - } - - STATIC_ASSERT(sizeof(MDBX_reader) == MDBX_CACHELINE_SIZE); - STATIC_ASSERT(offsetof(MDBX_lockinfo, mti_numreaders) % MDBX_CACHELINE_SIZE == - 0); - STATIC_ASSERT(offsetof(MDBX_lockinfo, mti_readers) % MDBX_CACHELINE_SIZE == - 0); - - pgno_t upper_pgno = 0; - if (flags & MDBX_TXN_RDONLY) { - txn->mt_flags = MDBX_TXN_RDONLY; - MDBX_reader *r = txn->mt_ro_reader; - if (likely(env->me_flags & MDBX_ENV_TXKEY)) { - mdbx_assert(env, !(env->me_flags & MDBX_NOTLS)); - r = mdbx_thread_rthc_get(env->me_txkey); - if (likely(r)) { - mdbx_assert(env, r->mr_pid == env->me_pid); - mdbx_assert(env, r->mr_tid == mdbx_thread_self()); - } - } else { - mdbx_assert(env, !env->me_lck || (env->me_flags & MDBX_NOTLS)); - } - - if (likely(r)) { - if (unlikely(r->mr_pid != env->me_pid || r->mr_txnid != ~(txnid_t)0)) - return MDBX_BAD_RSLOT; - } else if (env->me_lck) { - unsigned slot, nreaders; - const mdbx_pid_t pid = env->me_pid; - const mdbx_tid_t tid = mdbx_thread_self(); - mdbx_assert(env, env->me_lck->mti_magic_and_version == MDBX_LOCK_MAGIC); - mdbx_assert(env, env->me_lck->mti_os_and_format == MDBX_LOCK_FORMAT); - - rc = mdbx_rdt_lock(env); - if (unlikely(MDBX_IS_ERROR(rc))) - return rc; - rc = MDBX_SUCCESS; - - if (unlikely(env->me_live_reader != pid)) { - rc = mdbx_rpid_set(env); - if (unlikely(rc != MDBX_SUCCESS)) { - mdbx_rdt_unlock(env); - return rc; - } - env->me_live_reader = pid; - } - - while (1) { - nreaders = env->me_lck->mti_numreaders; - for (slot = 0; slot < nreaders; slot++) - if (env->me_lck->mti_readers[slot].mr_pid == 0) - break; - - if (likely(slot < env->me_maxreaders)) - break; - - rc = mdbx_reader_check0(env, true, NULL); - if (rc != MDBX_RESULT_TRUE) { - mdbx_rdt_unlock(env); - return (rc == MDBX_SUCCESS) ? MDBX_READERS_FULL : rc; - } - } - - r = &env->me_lck->mti_readers[slot]; - /* Claim the reader slot, carefully since other code - * uses the reader table un-mutexed: First reset the - * slot, next publish it in mtb.mti_numreaders. After - * that, it is safe for mdbx_env_close() to touch it. - * When it will be closed, we can finally claim it. */ - r->mr_pid = 0; - r->mr_txnid = ~(txnid_t)0; - r->mr_tid = tid; - mdbx_coherent_barrier(); - if (slot == nreaders) - env->me_lck->mti_numreaders = ++nreaders; - if (env->me_close_readers < nreaders) - env->me_close_readers = nreaders; - r->mr_pid = pid; - mdbx_rdt_unlock(env); - - if (likely(env->me_flags & MDBX_ENV_TXKEY)) - mdbx_thread_rthc_set(env->me_txkey, r); - } - - while (1) { - MDBX_meta *const meta = mdbx_meta_head(env); - mdbx_jitter4testing(false); - const txnid_t snap = mdbx_meta_txnid_fluid(env, meta); - mdbx_jitter4testing(false); - if (r) { - r->mr_txnid = snap; - mdbx_jitter4testing(false); - mdbx_assert(env, r->mr_pid == mdbx_getpid()); - mdbx_assert(env, r->mr_tid == mdbx_thread_self()); - mdbx_assert(env, r->mr_txnid == snap); - mdbx_coherent_barrier(); - env->me_lck->mti_readers_refresh_flag = true; - } - mdbx_jitter4testing(true); - - /* Snap the state from current meta-head */ - txn->mt_txnid = snap; - txn->mt_next_pgno = meta->mm_geo.next; - txn->mt_end_pgno = meta->mm_geo.now; - upper_pgno = meta->mm_geo.upper; - memcpy(txn->mt_dbs, meta->mm_dbs, CORE_DBS * sizeof(MDBX_db)); - txn->mt_canary = meta->mm_canary; - - /* LY: Retry on a race, ITS#7970. */ - mdbx_compiler_barrier(); - if (likely(meta == mdbx_meta_head(env) && - snap == mdbx_meta_txnid_fluid(env, meta) && - snap >= *env->me_oldest)) { - mdbx_jitter4testing(false); - break; - } - } - - if (unlikely(txn->mt_txnid == 0)) { - mdbx_error("environment corrupted by died writer, must shutdown!"); - rc = MDBX_WANNA_RECOVERY; - goto bailout; - } - mdbx_assert(env, txn->mt_txnid >= *env->me_oldest); - txn->mt_ro_reader = r; - txn->mt_dbxs = env->me_dbxs; /* mostly static anyway */ - } else { - /* Not yet touching txn == env->me_txn0, it may be active */ - mdbx_jitter4testing(false); - rc = mdbx_txn_lock(env, F_ISSET(flags, MDBX_TRYTXN)); - if (unlikely(rc)) - return rc; - - mdbx_jitter4testing(false); - MDBX_meta *meta = mdbx_meta_head(env); - mdbx_jitter4testing(false); - txn->mt_canary = meta->mm_canary; - const txnid_t snap = mdbx_meta_txnid_stable(env, meta); - txn->mt_txnid = snap + 1; - if (unlikely(txn->mt_txnid < snap)) { - mdbx_debug("txnid overflow!"); - rc = MDBX_TXN_FULL; - goto bailout; - } - - txn->mt_flags = flags; - txn->mt_child = NULL; - txn->mt_loose_pages = NULL; - txn->mt_loose_count = 0; - txn->mt_dirtyroom = MDBX_PNL_UM_MAX; - txn->mt_rw_dirtylist = env->me_dirtylist; - txn->mt_rw_dirtylist[0].mid = 0; - txn->mt_befree_pages = env->me_free_pgs; - txn->mt_befree_pages[0] = 0; - txn->mt_spill_pages = NULL; - if (txn->mt_lifo_reclaimed) - txn->mt_lifo_reclaimed[0] = 0; - env->me_txn = txn; - memcpy(txn->mt_dbiseqs, env->me_dbiseqs, env->me_maxdbs * sizeof(unsigned)); - /* Copy the DB info and flags */ - memcpy(txn->mt_dbs, meta->mm_dbs, CORE_DBS * sizeof(MDBX_db)); - /* Moved to here to avoid a data race in read TXNs */ - txn->mt_next_pgno = meta->mm_geo.next; - txn->mt_end_pgno = meta->mm_geo.now; - upper_pgno = meta->mm_geo.upper; - } - - /* Setup db info */ - txn->mt_numdbs = env->me_numdbs; - mdbx_compiler_barrier(); - for (unsigned i = CORE_DBS; i < txn->mt_numdbs; i++) { - unsigned x = env->me_dbflags[i]; - txn->mt_dbs[i].md_flags = x & PERSISTENT_FLAGS; - txn->mt_dbflags[i] = - (x & MDBX_VALID) ? DB_VALID | DB_USRVALID | DB_STALE : 0; - } - txn->mt_dbflags[MAIN_DBI] = DB_VALID | DB_USRVALID; - txn->mt_dbflags[FREE_DBI] = DB_VALID; - - if (unlikely(env->me_flags & MDBX_FATAL_ERROR)) { - mdbx_warning("environment had fatal error, must shutdown!"); - rc = MDBX_PANIC; - } else { - const size_t size = pgno2bytes(env, txn->mt_end_pgno); - if (unlikely(size > env->me_mapsize)) { - if (upper_pgno > MAX_PAGENO || - bytes2pgno(env, pgno2bytes(env, upper_pgno)) != upper_pgno) { - rc = MDBX_MAP_RESIZED; - goto bailout; - } - rc = mdbx_mapresize(env, txn->mt_end_pgno, upper_pgno); - if (rc != MDBX_SUCCESS) - goto bailout; - } - txn->mt_owner = mdbx_thread_self(); - return MDBX_SUCCESS; - } -bailout: - assert(rc != MDBX_SUCCESS); - mdbx_txn_end(txn, MDBX_END_SLOT | MDBX_END_FAIL_BEGIN); - return rc; -} - -int mdbx_txn_renew(MDBX_txn *txn) { - int rc; - - if (unlikely(!txn)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely((txn->mt_flags & MDBX_TXN_RDONLY) == 0)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_owner != 0)) - return MDBX_THREAD_MISMATCH; - - rc = mdbx_txn_renew0(txn, MDBX_TXN_RDONLY); - if (rc == MDBX_SUCCESS) { - txn->mt_owner = mdbx_thread_self(); - mdbx_debug("renew txn %" PRIaTXN "%c %p on env %p, root page %" PRIaPGNO - "/%" PRIaPGNO, - txn->mt_txnid, (txn->mt_flags & MDBX_TXN_RDONLY) ? 'r' : 'w', - (void *)txn, (void *)txn->mt_env, txn->mt_dbs[MAIN_DBI].md_root, - txn->mt_dbs[FREE_DBI].md_root); - } - return rc; -} - -int mdbx_txn_begin(MDBX_env *env, MDBX_txn *parent, unsigned flags, - MDBX_txn **ret) { - MDBX_txn *txn; - MDBX_ntxn *ntxn; - int rc; - unsigned size, tsize; - - if (unlikely(!env || !ret)) - return MDBX_EINVAL; - - if (unlikely(env->me_signature != MDBX_ME_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(env->me_pid != mdbx_getpid())) - env->me_flags |= MDBX_FATAL_ERROR; - - if (unlikely(env->me_flags & MDBX_FATAL_ERROR)) - return MDBX_PANIC; - - if (unlikely(!env->me_map)) - return MDBX_EPERM; - - flags &= MDBX_TXN_BEGIN_FLAGS; - flags |= env->me_flags & MDBX_WRITEMAP; - - if (unlikely(env->me_flags & MDBX_RDONLY & - ~flags)) /* write txn in RDONLY env */ - return MDBX_EACCESS; - - if (parent) { - if (unlikely(parent->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EINVAL; - - if (unlikely(parent->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - /* Nested transactions: Max 1 child, write txns only, no writemap */ - flags |= parent->mt_flags; - if (unlikely(flags & (MDBX_RDONLY | MDBX_WRITEMAP | MDBX_TXN_BLOCKED))) { - return (parent->mt_flags & MDBX_TXN_RDONLY) ? MDBX_EINVAL : MDBX_BAD_TXN; - } - /* Child txns save MDBX_pgstate and use own copy of cursors */ - size = env->me_maxdbs * (sizeof(MDBX_db) + sizeof(MDBX_cursor *) + 1); - size += tsize = sizeof(MDBX_ntxn); - } else if (flags & MDBX_RDONLY) { - if (env->me_txn0 && unlikely(env->me_txn0->mt_owner == mdbx_thread_self())) - return MDBX_BUSY; - size = env->me_maxdbs * (sizeof(MDBX_db) + 1); - size += tsize = sizeof(MDBX_txn); - } else { - /* Reuse preallocated write txn. However, do not touch it until - * mdbx_txn_renew0() succeeds, since it currently may be active. */ - txn = env->me_txn0; - if (unlikely(txn->mt_owner == mdbx_thread_self())) - return MDBX_BUSY; - goto renew; - } - if (unlikely((txn = malloc(size)) == NULL)) { - mdbx_debug("calloc: %s", "failed"); - return MDBX_ENOMEM; - } - memset(txn, 0, tsize); - txn->mt_dbxs = env->me_dbxs; /* static */ - txn->mt_dbs = (MDBX_db *)((char *)txn + tsize); - txn->mt_dbflags = (uint8_t *)txn + size - env->me_maxdbs; - txn->mt_flags = flags; - txn->mt_env = env; - - if (parent) { - unsigned i; - txn->mt_cursors = (MDBX_cursor **)(txn->mt_dbs + env->me_maxdbs); - txn->mt_dbiseqs = parent->mt_dbiseqs; - txn->mt_rw_dirtylist = malloc(sizeof(MDBX_ID2) * MDBX_PNL_UM_SIZE); - if (!txn->mt_rw_dirtylist || - !(txn->mt_befree_pages = mdbx_pnl_alloc(MDBX_PNL_UM_MAX))) { - free(txn->mt_rw_dirtylist); - free(txn); - return MDBX_ENOMEM; - } - txn->mt_txnid = parent->mt_txnid; - txn->mt_dirtyroom = parent->mt_dirtyroom; - txn->mt_rw_dirtylist[0].mid = 0; - txn->mt_spill_pages = NULL; - txn->mt_next_pgno = parent->mt_next_pgno; - txn->mt_end_pgno = parent->mt_end_pgno; - parent->mt_flags |= MDBX_TXN_HAS_CHILD; - parent->mt_child = txn; - txn->mt_parent = parent; - txn->mt_numdbs = parent->mt_numdbs; - memcpy(txn->mt_dbs, parent->mt_dbs, txn->mt_numdbs * sizeof(MDBX_db)); - /* Copy parent's mt_dbflags, but clear DB_NEW */ - for (i = 0; i < txn->mt_numdbs; i++) - txn->mt_dbflags[i] = parent->mt_dbflags[i] & ~(DB_FRESH | DB_CREAT); - rc = 0; - ntxn = (MDBX_ntxn *)txn; - ntxn->mnt_pgstate = - env->me_pgstate; /* save parent me_reclaimed_pglist & co */ - if (env->me_reclaimed_pglist) { - size = MDBX_PNL_SIZEOF(env->me_reclaimed_pglist); - env->me_reclaimed_pglist = mdbx_pnl_alloc(env->me_reclaimed_pglist[0]); - if (likely(env->me_reclaimed_pglist)) - memcpy(env->me_reclaimed_pglist, ntxn->mnt_pgstate.mf_reclaimed_pglist, - size); - else - rc = MDBX_ENOMEM; - } - if (likely(!rc)) - rc = mdbx_cursor_shadow(parent, txn); - if (unlikely(rc)) - mdbx_txn_end(txn, MDBX_END_FAIL_BEGINCHILD); - } else { /* MDBX_RDONLY */ - txn->mt_dbiseqs = env->me_dbiseqs; - renew: - rc = mdbx_txn_renew0(txn, flags); - } - - if (unlikely(rc)) { - if (txn != env->me_txn0) - free(txn); - } else { - txn->mt_signature = MDBX_MT_SIGNATURE; - *ret = txn; - mdbx_debug("begin txn %" PRIaTXN "%c %p on env %p, root page %" PRIaPGNO - "/%" PRIaPGNO, - txn->mt_txnid, (flags & MDBX_RDONLY) ? 'r' : 'w', (void *)txn, - (void *)env, txn->mt_dbs[MAIN_DBI].md_root, - txn->mt_dbs[FREE_DBI].md_root); - } - - return rc; -} - -MDBX_env *mdbx_txn_env(MDBX_txn *txn) { - if (unlikely(!txn || txn->mt_signature != MDBX_MT_SIGNATURE)) - return NULL; - return txn->mt_env; -} - -uint64_t mdbx_txn_id(MDBX_txn *txn) { - if (unlikely(!txn || txn->mt_signature != MDBX_MT_SIGNATURE)) - return ~(txnid_t)0; - return txn->mt_txnid; -} - -int mdbx_txn_flags(MDBX_txn *txn) { - if (unlikely(!txn || txn->mt_signature != MDBX_MT_SIGNATURE)) - return -1; - - return txn->mt_flags; -} - -/* Export or close DBI handles opened in this txn. */ -static void mdbx_dbis_update(MDBX_txn *txn, int keep) { - MDBX_dbi n = txn->mt_numdbs; - if (n) { - bool locked = false; - MDBX_env *env = txn->mt_env; - uint8_t *tdbflags = txn->mt_dbflags; - - for (unsigned i = n; --i >= CORE_DBS;) { - if (likely((tdbflags[i] & DB_CREAT) == 0)) - continue; - if (!locked) { - mdbx_ensure(env, - mdbx_fastmutex_acquire(&env->me_dbi_lock) == MDBX_SUCCESS); - locked = true; - } - if (keep) { - env->me_dbflags[i] = txn->mt_dbs[i].md_flags | MDBX_VALID; - mdbx_compiler_barrier(); - if (env->me_numdbs <= i) - env->me_numdbs = i + 1; - } else { - char *ptr = env->me_dbxs[i].md_name.iov_base; - if (ptr) { - env->me_dbxs[i].md_name.iov_len = 0; - mdbx_compiler_barrier(); - assert(env->me_dbflags[i] == 0); - env->me_dbiseqs[i]++; - env->me_dbxs[i].md_name.iov_base = NULL; - free(ptr); - } - } - } - - if (unlikely(locked)) - mdbx_ensure(env, - mdbx_fastmutex_release(&env->me_dbi_lock) == MDBX_SUCCESS); - } -} - -/* End a transaction, except successful commit of a nested transaction. - * May be called twice for readonly txns: First reset it, then abort. - * [in] txn the transaction handle to end - * [in] mode why and how to end the transaction */ -static int mdbx_txn_end(MDBX_txn *txn, unsigned mode) { - MDBX_env *env = txn->mt_env; - static const char *const names[] = MDBX_END_NAMES; - - if (unlikely(txn->mt_env->me_pid != mdbx_getpid())) { - env->me_flags |= MDBX_FATAL_ERROR; - return MDBX_PANIC; - } - - mdbx_debug("%s txn %" PRIaTXN "%c %p on mdbenv %p, root page %" PRIaPGNO - "/%" PRIaPGNO, - names[mode & MDBX_END_OPMASK], txn->mt_txnid, - (txn->mt_flags & MDBX_TXN_RDONLY) ? 'r' : 'w', (void *)txn, - (void *)env, txn->mt_dbs[MAIN_DBI].md_root, - txn->mt_dbs[FREE_DBI].md_root); - - if (F_ISSET(txn->mt_flags, MDBX_TXN_RDONLY)) { - if (txn->mt_ro_reader) { - txn->mt_ro_reader->mr_txnid = ~(txnid_t)0; - env->me_lck->mti_readers_refresh_flag = true; - if (mode & MDBX_END_SLOT) { - if ((env->me_flags & MDBX_ENV_TXKEY) == 0) - txn->mt_ro_reader->mr_pid = 0; - txn->mt_ro_reader = NULL; - } - } - mdbx_coherent_barrier(); - txn->mt_numdbs = 0; /* prevent further DBI activity */ - txn->mt_flags = MDBX_TXN_RDONLY | MDBX_TXN_FINISHED; - txn->mt_owner = 0; - } else if (!F_ISSET(txn->mt_flags, MDBX_TXN_FINISHED)) { - /* Export or close DBI handles created in this txn */ - mdbx_dbis_update(txn, mode & MDBX_END_UPDATE); - - pgno_t *pghead = env->me_reclaimed_pglist; - - if (!(mode & MDBX_END_EOTDONE)) /* !(already closed cursors) */ - mdbx_cursors_eot(txn, 0); - if (!(env->me_flags & MDBX_WRITEMAP)) { - mdbx_dlist_free(txn); - } - - if (txn->mt_lifo_reclaimed) { - txn->mt_lifo_reclaimed[0] = 0; - if (txn != env->me_txn0) { - mdbx_txl_free(txn->mt_lifo_reclaimed); - txn->mt_lifo_reclaimed = NULL; - } - } - txn->mt_numdbs = 0; - txn->mt_flags = MDBX_TXN_FINISHED; - txn->mt_owner = 0; - - if (!txn->mt_parent) { - mdbx_pnl_shrink(&txn->mt_befree_pages); - env->me_free_pgs = txn->mt_befree_pages; - /* me_pgstate: */ - env->me_reclaimed_pglist = NULL; - env->me_last_reclaimed = 0; - - env->me_txn = NULL; - - /* The writer mutex was locked in mdbx_txn_begin. */ - mdbx_txn_unlock(env); - } else { - txn->mt_parent->mt_child = NULL; - txn->mt_parent->mt_flags &= ~MDBX_TXN_HAS_CHILD; - env->me_pgstate = ((MDBX_ntxn *)txn)->mnt_pgstate; - mdbx_pnl_free(txn->mt_befree_pages); - mdbx_pnl_free(txn->mt_spill_pages); - free(txn->mt_rw_dirtylist); - } - - mdbx_pnl_free(pghead); - } - - mdbx_assert(env, txn == env->me_txn0 || txn->mt_owner == 0); - if ((mode & MDBX_END_FREE) != 0 && txn != env->me_txn0) { - txn->mt_signature = 0; - free(txn); - } - - return MDBX_SUCCESS; -} - -int mdbx_txn_reset(MDBX_txn *txn) { - if (unlikely(!txn)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - /* This call is only valid for read-only txns */ - if (unlikely(!(txn->mt_flags & MDBX_TXN_RDONLY))) - return MDBX_EINVAL; - - /* LY: don't close DBI-handles in MDBX mode */ - int rc = mdbx_txn_end(txn, MDBX_END_RESET | MDBX_END_UPDATE); - if (rc == MDBX_SUCCESS) { - assert(txn->mt_signature == MDBX_MT_SIGNATURE); - assert(txn->mt_owner == 0); - } - return rc; -} - -int mdbx_txn_abort(MDBX_txn *txn) { - if (unlikely(!txn)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner && txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - if (F_ISSET(txn->mt_flags, MDBX_TXN_RDONLY)) - /* LY: don't close DBI-handles in MDBX mode */ - return mdbx_txn_end(txn, MDBX_END_ABORT | MDBX_END_UPDATE | MDBX_END_SLOT | - MDBX_END_FREE); - - if (txn->mt_child) - mdbx_txn_abort(txn->mt_child); - - return mdbx_txn_end(txn, MDBX_END_ABORT | MDBX_END_SLOT | MDBX_END_FREE); -} - -static __inline int mdbx_backlog_size(MDBX_txn *txn) { - int reclaimed = txn->mt_env->me_reclaimed_pglist - ? txn->mt_env->me_reclaimed_pglist[0] - : 0; - return reclaimed + txn->mt_loose_count + txn->mt_end_pgno - txn->mt_next_pgno; -} - -static __inline int mdbx_backlog_extragap(MDBX_env *env) { - /* LY: extra page(s) for b-tree rebalancing */ - return (env->me_flags & MDBX_LIFORECLAIM) ? 2 : 1; -} - -/* LY: Prepare a backlog of pages to modify FreeDB itself, - * while reclaiming is prohibited. It should be enough to prevent search - * in mdbx_page_alloc() during a deleting, when freeDB tree is unbalanced. */ -static int mdbx_prep_backlog(MDBX_txn *txn, MDBX_cursor *mc) { - /* LY: extra page(s) for b-tree rebalancing */ - const int extra = mdbx_backlog_extragap(txn->mt_env); - - if (mdbx_backlog_size(txn) < mc->mc_db->md_depth + extra) { - int rc = mdbx_cursor_touch(mc); - if (unlikely(rc)) - return rc; - - int backlog; - while (unlikely((backlog = mdbx_backlog_size(txn)) < extra)) { - rc = mdbx_page_alloc(mc, 1, NULL, MDBX_ALLOC_GC); - if (unlikely(rc)) { - if (unlikely(rc != MDBX_NOTFOUND)) - return rc; - break; - } - } - } - - return MDBX_SUCCESS; -} - -/* Save the freelist as of this transaction to the freeDB. - * This changes the freelist. Keep trying until it stabilizes. */ -static int mdbx_freelist_save(MDBX_txn *txn) { - /* env->me_reclaimed_pglist[] can grow and shrink during this call. - * env->me_last_reclaimed and txn->mt_free_pages[] can only grow. - * Page numbers cannot disappear from txn->mt_free_pages[]. */ - MDBX_cursor mc; - MDBX_env *env = txn->mt_env; - int rc, more = 1; - txnid_t cleanup_reclaimed_id = 0, head_id = 0; - pgno_t befree_count = 0; - intptr_t head_room = 0, total_room = 0; - unsigned cleanup_reclaimed_pos = 0, refill_reclaimed_pos = 0; - const bool lifo = (env->me_flags & MDBX_LIFORECLAIM) != 0; - - rc = mdbx_cursor_init(&mc, txn, FREE_DBI, NULL); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - - /* MDBX_RESERVE cancels meminit in ovpage malloc (when no WRITEMAP) */ - const intptr_t clean_limit = - (env->me_flags & (MDBX_NOMEMINIT | MDBX_WRITEMAP)) ? SSIZE_MAX - : env->me_maxfree_1pg; - - mdbx_tassert(txn, mdbx_pnl_check(env->me_reclaimed_pglist)); -again_on_freelist_change: - mdbx_tassert(txn, mdbx_pnl_check(env->me_reclaimed_pglist)); - while (1) { - /* Come back here after each Put() in case freelist changed */ - MDBX_val key, data; - - mdbx_tassert(txn, mdbx_pnl_check(env->me_reclaimed_pglist)); - if (!lifo) { - /* If using records from freeDB which we have not yet deleted, - * now delete them and any we reserved for me_reclaimed_pglist. */ - while (cleanup_reclaimed_id < env->me_last_reclaimed) { - rc = mdbx_cursor_first(&mc, &key, NULL); - if (unlikely(rc)) - goto bailout; - rc = mdbx_prep_backlog(txn, &mc); - if (unlikely(rc)) - goto bailout; - cleanup_reclaimed_id = head_id = *(txnid_t *)key.iov_base; - total_room = head_room = 0; - more = 1; - mdbx_tassert(txn, cleanup_reclaimed_id <= env->me_last_reclaimed); - mc.mc_flags |= C_RECLAIMING; - rc = mdbx_cursor_del(&mc, 0); - mc.mc_flags ^= C_RECLAIMING; - if (unlikely(rc)) - goto bailout; - } - } else if (txn->mt_lifo_reclaimed) { - /* LY: cleanup reclaimed records. */ - while (cleanup_reclaimed_pos < txn->mt_lifo_reclaimed[0]) { - cleanup_reclaimed_id = txn->mt_lifo_reclaimed[++cleanup_reclaimed_pos]; - key.iov_base = &cleanup_reclaimed_id; - key.iov_len = sizeof(cleanup_reclaimed_id); - rc = mdbx_cursor_get(&mc, &key, NULL, MDBX_SET); - if (likely(rc != MDBX_NOTFOUND)) { - if (unlikely(rc)) - goto bailout; - rc = mdbx_prep_backlog(txn, &mc); - if (unlikely(rc)) - goto bailout; - mc.mc_flags |= C_RECLAIMING; - rc = mdbx_cursor_del(&mc, 0); - mc.mc_flags ^= C_RECLAIMING; - if (unlikely(rc)) - goto bailout; - } - } - } - - mdbx_tassert(txn, mdbx_pnl_check(env->me_reclaimed_pglist)); - if (txn->mt_loose_pages) { - /* Return loose page numbers to me_reclaimed_pglist, - * though usually none are left at this point. - * The pages themselves remain in dirtylist. */ - if (unlikely(!env->me_reclaimed_pglist) && - !(lifo && env->me_last_reclaimed > 1)) { - /* Put loose page numbers in mt_free_pages, - * since unable to return them to me_reclaimed_pglist. */ - if (unlikely((rc = mdbx_pnl_need(&txn->mt_befree_pages, - txn->mt_loose_count)) != 0)) - return rc; - for (MDBX_page *mp = txn->mt_loose_pages; mp; mp = NEXT_LOOSE_PAGE(mp)) - mdbx_pnl_xappend(txn->mt_befree_pages, mp->mp_pgno); - } else { - /* Room for loose pages + temp PNL with same */ - if ((rc = mdbx_pnl_need(&env->me_reclaimed_pglist, - 2 * txn->mt_loose_count + 1)) != 0) - goto bailout; - MDBX_PNL loose = env->me_reclaimed_pglist + - MDBX_PNL_ALLOCLEN(env->me_reclaimed_pglist) - - txn->mt_loose_count; - unsigned count = 0; - for (MDBX_page *mp = txn->mt_loose_pages; mp; mp = NEXT_LOOSE_PAGE(mp)) - loose[++count] = mp->mp_pgno; - loose[0] = count; - mdbx_pnl_sort(loose); - mdbx_pnl_xmerge(env->me_reclaimed_pglist, loose); - } - - MDBX_ID2L dl = txn->mt_rw_dirtylist; - for (MDBX_page *mp = txn->mt_loose_pages; mp;) { - mdbx_tassert(txn, mp->mp_pgno < txn->mt_next_pgno); - mdbx_ensure(env, mp->mp_pgno >= NUM_METAS); - - unsigned s, d; - for (s = d = 0; ++s <= dl[0].mid;) - if (dl[s].mid != mp->mp_pgno) - dl[++d] = dl[s]; - - dl[0].mid -= 1; - mdbx_tassert(txn, dl[0].mid == d); - - MDBX_page *dp = mp; - mp = NEXT_LOOSE_PAGE(mp); - if ((env->me_flags & MDBX_WRITEMAP) == 0) - mdbx_dpage_free(env, dp); - } - - txn->mt_loose_pages = NULL; - txn->mt_loose_count = 0; - } - - mdbx_tassert(txn, mdbx_pnl_check(env->me_reclaimed_pglist)); - if (env->me_reclaimed_pglist) { - /* Refund suitable pages into "unallocated" space */ - pgno_t tail = txn->mt_next_pgno; - pgno_t *const begin = env->me_reclaimed_pglist + 1; - pgno_t *const end = begin + env->me_reclaimed_pglist[0]; - pgno_t *higest; -#if MDBX_PNL_ASCENDING - for (higest = end; --higest >= begin;) { -#else - for (higest = begin; higest < end; ++higest) { -#endif /* MDBX_PNL sort-order */ - mdbx_tassert(txn, *higest >= NUM_METAS && *higest < tail); - if (*higest != tail - 1) - break; - tail -= 1; - } - if (tail != txn->mt_next_pgno) { -#if MDBX_PNL_ASCENDING - env->me_reclaimed_pglist[0] = (unsigned)(higest + 1 - begin); -#else - env->me_reclaimed_pglist[0] -= (unsigned)(higest - begin); - for (pgno_t *move = begin; higest < end; ++move, ++higest) - *move = *higest; -#endif /* MDBX_PNL sort-order */ - mdbx_info("refunded %" PRIaPGNO " pages: %" PRIaPGNO " -> %" PRIaPGNO, - tail - txn->mt_next_pgno, tail, txn->mt_next_pgno); - txn->mt_next_pgno = tail; - mdbx_tassert(txn, mdbx_pnl_check(env->me_reclaimed_pglist)); - } - } - - /* Save the PNL of pages freed by this txn, to a single record */ - if (befree_count < txn->mt_befree_pages[0]) { - if (unlikely(!befree_count)) { - /* Make sure last page of freeDB is touched and on freelist */ - rc = mdbx_page_search(&mc, NULL, MDBX_PS_LAST | MDBX_PS_MODIFY); - if (unlikely(rc && rc != MDBX_NOTFOUND)) - goto bailout; - } - pgno_t *befree_pages = txn->mt_befree_pages; - /* Write to last page of freeDB */ - key.iov_len = sizeof(txn->mt_txnid); - key.iov_base = &txn->mt_txnid; - do { - befree_count = befree_pages[0]; - data.iov_len = MDBX_PNL_SIZEOF(befree_pages); - rc = mdbx_cursor_put(&mc, &key, &data, MDBX_RESERVE); - if (unlikely(rc)) - goto bailout; - /* Retry if mt_free_pages[] grew during the Put() */ - befree_pages = txn->mt_befree_pages; - } while (befree_count < befree_pages[0]); - - mdbx_pnl_sort(befree_pages); - memcpy(data.iov_base, befree_pages, data.iov_len); - - if (mdbx_debug_enabled(MDBX_DBG_EXTRA)) { - unsigned i = (unsigned)befree_pages[0]; - mdbx_debug_extra("PNL write txn %" PRIaTXN " root %" PRIaPGNO - " num %u, PNL", - txn->mt_txnid, txn->mt_dbs[FREE_DBI].md_root, i); - for (; i; i--) - mdbx_debug_extra_print(" %" PRIaPGNO "", befree_pages[i]); - mdbx_debug_extra_print("\n"); - } - continue; - } - - mdbx_tassert(txn, mdbx_pnl_check(env->me_reclaimed_pglist)); - const intptr_t rpl_len = - (env->me_reclaimed_pglist ? env->me_reclaimed_pglist[0] : 0) + - txn->mt_loose_count; - if (rpl_len && refill_reclaimed_pos == 0) - refill_reclaimed_pos = 1; - - /* Reserve records for me_reclaimed_pglist[]. Split it if multi-page, - * to avoid searching freeDB for a page range. Use keys in - * range [1,me_last_reclaimed]: Smaller than txnid of oldest reader. */ - if (total_room >= rpl_len) { - if (total_room == rpl_len || --more < 0) - break; - } else if (head_room >= (intptr_t)env->me_maxfree_1pg && head_id > 1) { - /* Keep current record (overflow page), add a new one */ - head_id--; - refill_reclaimed_pos++; - head_room = 0; - } - - if (lifo) { - if (refill_reclaimed_pos > - (txn->mt_lifo_reclaimed ? txn->mt_lifo_reclaimed[0] : 0)) { - /* LY: need just a txn-id for save page list. */ - rc = mdbx_page_alloc(&mc, 0, NULL, MDBX_ALLOC_GC | MDBX_ALLOC_KICK); - if (likely(rc == 0)) - /* LY: ok, reclaimed from freedb. */ - continue; - if (unlikely(rc != MDBX_NOTFOUND)) - /* LY: other troubles... */ - goto bailout; - - /* LY: freedb is empty, will look any free txn-id in high2low order. */ - if (unlikely(env->me_last_reclaimed < 1)) { - /* LY: not any txn in the past of freedb. */ - rc = MDBX_MAP_FULL; - goto bailout; - } - - if (unlikely(!txn->mt_lifo_reclaimed)) { - txn->mt_lifo_reclaimed = mdbx_txl_alloc(); - if (unlikely(!txn->mt_lifo_reclaimed)) { - rc = MDBX_ENOMEM; - goto bailout; - } - } - /* LY: append the list. */ - rc = mdbx_txl_append(&txn->mt_lifo_reclaimed, - env->me_last_reclaimed - 1); - if (unlikely(rc)) - goto bailout; - --env->me_last_reclaimed; - /* LY: note that freeDB cleanup is not needed. */ - ++cleanup_reclaimed_pos; - } - mdbx_tassert(txn, txn->mt_lifo_reclaimed != NULL); - head_id = txn->mt_lifo_reclaimed[refill_reclaimed_pos]; - } else { - mdbx_tassert(txn, txn->mt_lifo_reclaimed == NULL); - } - - /* (Re)write {key = head_id, PNL length = head_room} */ - total_room -= head_room; - head_room = rpl_len - total_room; - if (head_room > (intptr_t)env->me_maxfree_1pg && head_id > 1) { - /* Overflow multi-page for part of me_reclaimed_pglist */ - head_room /= (head_id < INT16_MAX) ? (pgno_t)head_id - : INT16_MAX; /* amortize page sizes */ - head_room += env->me_maxfree_1pg - head_room % (env->me_maxfree_1pg + 1); - } else if (head_room < 0) { - /* Rare case, not bothering to delete this record */ - head_room = 0; - continue; - } - key.iov_len = sizeof(head_id); - key.iov_base = &head_id; - data.iov_len = (head_room + 1) * sizeof(pgno_t); - rc = mdbx_cursor_put(&mc, &key, &data, MDBX_RESERVE); - mdbx_tassert(txn, mdbx_pnl_check(env->me_reclaimed_pglist)); - if (unlikely(rc)) - goto bailout; - - /* PNL is initially empty, zero out at least the length */ - pgno_t *pgs = (pgno_t *)data.iov_base; - intptr_t i = head_room > clean_limit ? head_room : 0; - do { - pgs[i] = 0; - } while (--i >= 0); - total_room += head_room; - continue; - } - - mdbx_tassert(txn, - cleanup_reclaimed_pos == - (txn->mt_lifo_reclaimed ? txn->mt_lifo_reclaimed[0] : 0)); - - /* Fill in the reserved me_reclaimed_pglist records */ - rc = MDBX_SUCCESS; - mdbx_tassert(txn, mdbx_pnl_check(env->me_reclaimed_pglist)); - if (env->me_reclaimed_pglist && env->me_reclaimed_pglist[0]) { - MDBX_val key, data; - key.iov_len = data.iov_len = 0; /* avoid MSVC warning */ - key.iov_base = data.iov_base = NULL; - - size_t rpl_left = env->me_reclaimed_pglist[0]; - pgno_t *rpl_end = env->me_reclaimed_pglist + rpl_left; - if (txn->mt_lifo_reclaimed == 0) { - mdbx_tassert(txn, lifo == 0); - rc = mdbx_cursor_first(&mc, &key, &data); - if (unlikely(rc)) - goto bailout; - } else { - mdbx_tassert(txn, lifo != 0); - } - - while (1) { - txnid_t id; - if (txn->mt_lifo_reclaimed == 0) { - mdbx_tassert(txn, lifo == 0); - id = *(txnid_t *)key.iov_base; - mdbx_tassert(txn, id <= env->me_last_reclaimed); - } else { - mdbx_tassert(txn, lifo != 0); - mdbx_tassert(txn, - refill_reclaimed_pos > 0 && - refill_reclaimed_pos <= txn->mt_lifo_reclaimed[0]); - id = txn->mt_lifo_reclaimed[refill_reclaimed_pos--]; - key.iov_base = &id; - key.iov_len = sizeof(id); - rc = mdbx_cursor_get(&mc, &key, &data, MDBX_SET); - if (unlikely(rc)) - goto bailout; - } - mdbx_tassert( - txn, cleanup_reclaimed_pos == - (txn->mt_lifo_reclaimed ? txn->mt_lifo_reclaimed[0] : 0)); - - mdbx_tassert(txn, data.iov_len >= sizeof(pgno_t) * 2); - size_t chunk_len = (data.iov_len / sizeof(pgno_t)) - 1; - if (chunk_len > rpl_left) - chunk_len = rpl_left; - data.iov_len = (chunk_len + 1) * sizeof(pgno_t); - key.iov_base = &id; - key.iov_len = sizeof(id); - - rpl_end -= chunk_len; - data.iov_base = rpl_end; - pgno_t save = rpl_end[0]; - rpl_end[0] = (pgno_t)chunk_len; - mdbx_tassert(txn, mdbx_pnl_check(rpl_end)); - mc.mc_flags |= C_RECLAIMING; - rc = mdbx_cursor_put(&mc, &key, &data, MDBX_CURRENT); - mc.mc_flags ^= C_RECLAIMING; - mdbx_tassert(txn, mdbx_pnl_check(rpl_end)); - mdbx_tassert( - txn, cleanup_reclaimed_pos == - (txn->mt_lifo_reclaimed ? txn->mt_lifo_reclaimed[0] : 0)); - rpl_end[0] = save; - if (unlikely(rc)) - goto bailout; - - rpl_left -= chunk_len; - if (rpl_left == 0) - break; - - if (!lifo) { - rc = mdbx_cursor_next(&mc, &key, &data, MDBX_NEXT); - if (unlikely(rc)) - goto bailout; - } - } - } - -bailout: - if (txn->mt_lifo_reclaimed) { - mdbx_tassert(txn, rc || cleanup_reclaimed_pos == txn->mt_lifo_reclaimed[0]); - if (rc == MDBX_SUCCESS && - cleanup_reclaimed_pos != txn->mt_lifo_reclaimed[0]) { - mdbx_tassert(txn, cleanup_reclaimed_pos < txn->mt_lifo_reclaimed[0]); - /* LY: zeroed cleanup_idx to force cleanup - * and refill created freeDB records. */ - cleanup_reclaimed_pos = 0; - /* LY: restart filling */ - total_room = head_room = refill_reclaimed_pos = 0; - more = 1; - goto again_on_freelist_change; - } - txn->mt_lifo_reclaimed[0] = 0; - if (txn != env->me_txn0) { - mdbx_txl_free(txn->mt_lifo_reclaimed); - txn->mt_lifo_reclaimed = NULL; - } - } - - return rc; -} - -/* Flush (some) dirty pages to the map, after clearing their dirty flag. - * [in] txn the transaction that's being committed - * [in] keep number of initial pages in dirtylist to keep dirty. - * Returns 0 on success, non-zero on failure. */ -static int mdbx_page_flush(MDBX_txn *txn, pgno_t keep) { - MDBX_env *env = txn->mt_env; - MDBX_ID2L dl = txn->mt_rw_dirtylist; - unsigned i, j, pagecount = dl[0].mid; - int rc; - size_t size = 0, pos = 0; - pgno_t pgno = 0; - MDBX_page *dp = NULL; - struct iovec iov[MDBX_COMMIT_PAGES]; - intptr_t wpos = 0, wsize = 0; - size_t next_pos = 1; /* impossible pos, so pos != next_pos */ - int n = 0; - - j = i = keep; - - if (env->me_flags & MDBX_WRITEMAP) { - /* Clear dirty flags */ - while (++i <= pagecount) { - dp = dl[i].mptr; - /* Don't flush this page yet */ - if (dp->mp_flags & (P_LOOSE | P_KEEP)) { - dp->mp_flags &= ~P_KEEP; - dl[++j] = dl[i]; - continue; - } - dp->mp_flags &= ~P_DIRTY; - dp->mp_validator = 0 /* TODO */; - env->me_sync_pending += - IS_OVERFLOW(dp) ? pgno2bytes(env, dp->mp_pages) : env->me_psize; - } - goto done; - } - - /* Write the pages */ - for (;;) { - if (++i <= pagecount) { - dp = dl[i].mptr; - /* Don't flush this page yet */ - if (dp->mp_flags & (P_LOOSE | P_KEEP)) { - dp->mp_flags &= ~P_KEEP; - dl[i].mid = 0; - continue; - } - pgno = dl[i].mid; - /* clear dirty flag */ - dp->mp_flags &= ~P_DIRTY; - dp->mp_validator = 0 /* TODO */; - pos = pgno2bytes(env, pgno); - size = IS_OVERFLOW(dp) ? pgno2bytes(env, dp->mp_pages) : env->me_psize; - env->me_sync_pending += size; - } - /* Write up to MDBX_COMMIT_PAGES dirty pages at a time. */ - if (pos != next_pos || n == MDBX_COMMIT_PAGES || wsize + size > MAX_WRITE) { - if (n) { - /* Write previous page(s) */ - rc = mdbx_pwritev(env->me_fd, iov, n, wpos, wsize); - if (unlikely(rc != MDBX_SUCCESS)) { - mdbx_debug("Write error: %s", strerror(rc)); - return rc; - } - n = 0; - } - if (i > pagecount) - break; - wpos = pos; - wsize = 0; - } - mdbx_debug("committing page %" PRIaPGNO "", pgno); - next_pos = pos + size; - iov[n].iov_len = size; - iov[n].iov_base = (char *)dp; - wsize += size; - n++; - } - - mdbx_invalidate_cache(env->me_map, pgno2bytes(env, txn->mt_next_pgno)); - - for (i = keep; ++i <= pagecount;) { - dp = dl[i].mptr; - /* This is a page we skipped above */ - if (!dl[i].mid) { - dl[++j] = dl[i]; - dl[j].mid = dp->mp_pgno; - continue; - } - mdbx_dpage_free(env, dp); - } - -done: - i--; - txn->mt_dirtyroom += i - j; - dl[0].mid = j; - return MDBX_SUCCESS; -} - -/* Check for misused dbi handles */ -#define TXN_DBI_CHANGED(txn, dbi) \ - ((txn)->mt_dbiseqs[dbi] != (txn)->mt_env->me_dbiseqs[dbi]) - -/* Import DBI which opened after txn started into context */ -static __cold bool mdbx_txn_import_dbi(MDBX_txn *txn, MDBX_dbi dbi) { - MDBX_env *env = txn->mt_env; - if (dbi < CORE_DBS || dbi >= env->me_numdbs) - return false; - - mdbx_ensure(env, mdbx_fastmutex_acquire(&env->me_dbi_lock) == MDBX_SUCCESS); - const unsigned snap_numdbs = env->me_numdbs; - mdbx_compiler_barrier(); - for (unsigned i = CORE_DBS; i < snap_numdbs; ++i) { - if (i >= txn->mt_numdbs) - txn->mt_dbflags[i] = 0; - if (!(txn->mt_dbflags[i] & DB_USRVALID) && - (env->me_dbflags[i] & MDBX_VALID)) { - txn->mt_dbs[i].md_flags = env->me_dbflags[i] & PERSISTENT_FLAGS; - txn->mt_dbflags[i] = DB_VALID | DB_USRVALID | DB_STALE; - assert(txn->mt_dbxs[i].md_cmp != NULL); - } - } - txn->mt_numdbs = snap_numdbs; - - mdbx_ensure(env, mdbx_fastmutex_release(&env->me_dbi_lock) == MDBX_SUCCESS); - return txn->mt_dbflags[dbi] & DB_USRVALID; -} - -/* Check txn and dbi arguments to a function */ -static __inline bool TXN_DBI_EXIST(MDBX_txn *txn, MDBX_dbi dbi, - unsigned validity) { - if (likely(dbi < txn->mt_numdbs && (txn->mt_dbflags[dbi] & validity))) - return true; - - return mdbx_txn_import_dbi(txn, dbi); -} - -int mdbx_txn_commit(MDBX_txn *txn) { - int rc; - - if (unlikely(txn == NULL)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - MDBX_env *env = txn->mt_env; - if (unlikely(env->me_pid != mdbx_getpid())) { - env->me_flags |= MDBX_FATAL_ERROR; - return MDBX_PANIC; - } - - if (txn->mt_child) { - rc = mdbx_txn_commit(txn->mt_child); - txn->mt_child = NULL; - if (unlikely(rc != MDBX_SUCCESS)) - goto fail; - } - - /* mdbx_txn_end() mode for a commit which writes nothing */ - unsigned end_mode = - MDBX_END_EMPTY_COMMIT | MDBX_END_UPDATE | MDBX_END_SLOT | MDBX_END_FREE; - if (unlikely(F_ISSET(txn->mt_flags, MDBX_TXN_RDONLY))) - goto done; - - if (unlikely(txn->mt_flags & (MDBX_TXN_FINISHED | MDBX_TXN_ERROR))) { - mdbx_debug("error flag is set, can't commit"); - if (txn->mt_parent) - txn->mt_parent->mt_flags |= MDBX_TXN_ERROR; - rc = MDBX_BAD_TXN; - goto fail; - } - - if (txn->mt_parent) { - MDBX_txn *parent = txn->mt_parent; - MDBX_page **lp; - MDBX_ID2L dst, src; - MDBX_PNL pspill; - unsigned i, x, y, len, ps_len; - - /* Append our reclaim list to parent's */ - if (txn->mt_lifo_reclaimed) { - if (parent->mt_lifo_reclaimed) { - rc = mdbx_txl_append_list(&parent->mt_lifo_reclaimed, - txn->mt_lifo_reclaimed); - if (unlikely(rc != MDBX_SUCCESS)) - goto fail; - mdbx_txl_free(txn->mt_lifo_reclaimed); - } else - parent->mt_lifo_reclaimed = txn->mt_lifo_reclaimed; - txn->mt_lifo_reclaimed = NULL; - } - - /* Append our free list to parent's */ - rc = mdbx_pnl_append_list(&parent->mt_befree_pages, txn->mt_befree_pages); - if (unlikely(rc != MDBX_SUCCESS)) - goto fail; - mdbx_pnl_free(txn->mt_befree_pages); - /* Failures after this must either undo the changes - * to the parent or set MDBX_TXN_ERROR in the parent. */ - - parent->mt_next_pgno = txn->mt_next_pgno; - parent->mt_end_pgno = txn->mt_end_pgno; - parent->mt_flags = txn->mt_flags; - - /* Merge our cursors into parent's and close them */ - mdbx_cursors_eot(txn, 1); - - /* Update parent's DB table. */ - memcpy(parent->mt_dbs, txn->mt_dbs, txn->mt_numdbs * sizeof(MDBX_db)); - parent->mt_numdbs = txn->mt_numdbs; - parent->mt_dbflags[FREE_DBI] = txn->mt_dbflags[FREE_DBI]; - parent->mt_dbflags[MAIN_DBI] = txn->mt_dbflags[MAIN_DBI]; - for (i = CORE_DBS; i < txn->mt_numdbs; i++) { - /* preserve parent's DB_NEW status */ - parent->mt_dbflags[i] = - txn->mt_dbflags[i] | (parent->mt_dbflags[i] & (DB_CREAT | DB_FRESH)); - } - - dst = parent->mt_rw_dirtylist; - src = txn->mt_rw_dirtylist; - /* Remove anything in our dirty list from parent's spill list */ - if ((pspill = parent->mt_spill_pages) && (ps_len = pspill[0])) { - x = y = ps_len; - pspill[0] = (pgno_t)-1; - /* Mark our dirty pages as deleted in parent spill list */ - for (i = 0, len = src[0].mid; ++i <= len;) { - pgno_t pn = src[i].mid << 1; - while (pn > pspill[x]) - x--; - if (pn == pspill[x]) { - pspill[x] = 1; - y = --x; - } - } - /* Squash deleted pagenums if we deleted any */ - for (x = y; ++x <= ps_len;) - if (!(pspill[x] & 1)) - pspill[++y] = pspill[x]; - pspill[0] = y; - } - - /* Remove anything in our spill list from parent's dirty list */ - if (txn->mt_spill_pages && txn->mt_spill_pages[0]) { - for (i = 1; i <= txn->mt_spill_pages[0]; i++) { - pgno_t pn = txn->mt_spill_pages[i]; - if (pn & 1) - continue; /* deleted spillpg */ - pn >>= 1; - y = mdbx_mid2l_search(dst, pn); - if (y <= dst[0].mid && dst[y].mid == pn) { - free(dst[y].mptr); - while (y < dst[0].mid) { - dst[y] = dst[y + 1]; - y++; - } - dst[0].mid--; - } - } - } - - /* Find len = length of merging our dirty list with parent's */ - x = dst[0].mid; - dst[0].mid = 0; /* simplify loops */ - if (parent->mt_parent) { - len = x + src[0].mid; - y = mdbx_mid2l_search(src, dst[x].mid + 1) - 1; - for (i = x; y && i; y--) { - pgno_t yp = src[y].mid; - while (yp < dst[i].mid) - i--; - if (yp == dst[i].mid) { - i--; - len--; - } - } - } else { /* Simplify the above for single-ancestor case */ - len = MDBX_PNL_UM_MAX - txn->mt_dirtyroom; - } - /* Merge our dirty list with parent's */ - y = src[0].mid; - for (i = len; y; dst[i--] = src[y--]) { - pgno_t yp = src[y].mid; - while (yp < dst[x].mid) - dst[i--] = dst[x--]; - if (yp == dst[x].mid) - free(dst[x--].mptr); - } - mdbx_tassert(txn, i == x); - dst[0].mid = len; - free(txn->mt_rw_dirtylist); - parent->mt_dirtyroom = txn->mt_dirtyroom; - if (txn->mt_spill_pages) { - if (parent->mt_spill_pages) { - /* TODO: Prevent failure here, so parent does not fail */ - rc = mdbx_pnl_append_list(&parent->mt_spill_pages, txn->mt_spill_pages); - if (unlikely(rc != MDBX_SUCCESS)) - parent->mt_flags |= MDBX_TXN_ERROR; - mdbx_pnl_free(txn->mt_spill_pages); - mdbx_pnl_sort(parent->mt_spill_pages); - } else { - parent->mt_spill_pages = txn->mt_spill_pages; - } - } - - /* Append our loose page list to parent's */ - for (lp = &parent->mt_loose_pages; *lp; lp = &NEXT_LOOSE_PAGE(*lp)) - ; - *lp = txn->mt_loose_pages; - parent->mt_loose_count += txn->mt_loose_count; - - parent->mt_child = NULL; - mdbx_pnl_free(((MDBX_ntxn *)txn)->mnt_pgstate.mf_reclaimed_pglist); - txn->mt_signature = 0; - free(txn); - return rc; - } - - if (unlikely(txn != env->me_txn)) { - mdbx_debug("attempt to commit unknown transaction"); - rc = MDBX_EINVAL; - goto fail; - } - - mdbx_cursors_eot(txn, 0); - end_mode |= MDBX_END_EOTDONE; - - if (!txn->mt_rw_dirtylist[0].mid && - !(txn->mt_flags & (MDBX_TXN_DIRTY | MDBX_TXN_SPILLS))) - goto done; - - mdbx_debug("committing txn %" PRIaTXN " %p on mdbenv %p, root page %" PRIaPGNO - "/%" PRIaPGNO, - txn->mt_txnid, (void *)txn, (void *)env, - txn->mt_dbs[MAIN_DBI].md_root, txn->mt_dbs[FREE_DBI].md_root); - - /* Update DB root pointers */ - if (txn->mt_numdbs > CORE_DBS) { - MDBX_cursor mc; - MDBX_dbi i; - MDBX_val data; - data.iov_len = sizeof(MDBX_db); - - rc = mdbx_cursor_init(&mc, txn, MAIN_DBI, NULL); - if (unlikely(rc != MDBX_SUCCESS)) - goto fail; - for (i = CORE_DBS; i < txn->mt_numdbs; i++) { - if (txn->mt_dbflags[i] & DB_DIRTY) { - if (unlikely(TXN_DBI_CHANGED(txn, i))) { - rc = MDBX_BAD_DBI; - goto fail; - } - data.iov_base = &txn->mt_dbs[i]; - rc = mdbx_cursor_put(&mc, &txn->mt_dbxs[i].md_name, &data, F_SUBDATA); - if (unlikely(rc != MDBX_SUCCESS)) - goto fail; - } - } - } - - rc = mdbx_freelist_save(txn); - if (unlikely(rc != MDBX_SUCCESS)) - goto fail; - - mdbx_pnl_free(env->me_reclaimed_pglist); - env->me_reclaimed_pglist = NULL; - mdbx_pnl_shrink(&txn->mt_befree_pages); - - if (mdbx_audit_enabled()) - mdbx_audit(txn); - - rc = mdbx_page_flush(txn, 0); - if (likely(rc == MDBX_SUCCESS)) { - MDBX_meta meta, *head = mdbx_meta_head(env); - - meta.mm_magic_and_version = head->mm_magic_and_version; - meta.mm_extra_flags = head->mm_extra_flags; - meta.mm_validator_id = head->mm_validator_id; - meta.mm_extra_pagehdr = head->mm_extra_pagehdr; - - meta.mm_geo = head->mm_geo; - meta.mm_geo.next = txn->mt_next_pgno; - meta.mm_geo.now = txn->mt_end_pgno; - meta.mm_dbs[FREE_DBI] = txn->mt_dbs[FREE_DBI]; - meta.mm_dbs[MAIN_DBI] = txn->mt_dbs[MAIN_DBI]; - meta.mm_canary = txn->mt_canary; - mdbx_meta_set_txnid(env, &meta, txn->mt_txnid); - - rc = mdbx_sync_locked( - env, env->me_flags | txn->mt_flags | MDBX_SHRINK_ALLOWED, &meta); - } - if (unlikely(rc != MDBX_SUCCESS)) - goto fail; - - if (likely(env->me_lck)) - env->me_lck->mti_readers_refresh_flag = false; - end_mode = MDBX_END_COMMITTED | MDBX_END_UPDATE | MDBX_END_EOTDONE; - -done: - return mdbx_txn_end(txn, end_mode); - -fail: - mdbx_txn_abort(txn); - return rc; -} - -/* Read the environment parameters of a DB environment - * before mapping it into memory. */ -static int __cold mdbx_read_header(MDBX_env *env, MDBX_meta *meta, - uint64_t *filesize) { - assert(offsetof(MDBX_page, mp_meta) == PAGEHDRSZ); - - int rc = mdbx_filesize(env->me_fd, filesize); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - - memset(meta, 0, sizeof(MDBX_meta)); - meta->mm_datasync_sign = MDBX_DATASIGN_WEAK; - rc = MDBX_CORRUPTED; - - /* Read twice all meta pages so we can find the latest one. */ - unsigned loop_limit = NUM_METAS * 2; - for (unsigned loop_count = 0; loop_count < loop_limit; ++loop_count) { - MDBX_page page; - - /* We don't know the page size on first time. - * So, just guess it. */ - unsigned guess_pagesize = meta->mm_psize; - if (guess_pagesize == 0) - guess_pagesize = - (loop_count > NUM_METAS) ? env->me_psize : env->me_os_psize; - - const unsigned meta_number = loop_count % NUM_METAS; - const unsigned offset = guess_pagesize * meta_number; - - unsigned retryleft = 42; - while (1) { - int err = mdbx_pread(env->me_fd, &page, sizeof(page), offset); - if (err != MDBX_SUCCESS) { - mdbx_error("read meta[%u,%u]: %i, %s", offset, (unsigned)sizeof(page), - err, mdbx_strerror(err)); - return err; - } - - MDBX_page again; - err = mdbx_pread(env->me_fd, &again, sizeof(again), offset); - if (err != MDBX_SUCCESS) { - mdbx_error("read meta[%u,%u]: %i, %s", offset, (unsigned)sizeof(again), - err, mdbx_strerror(err)); - return err; - } - - if (memcmp(&page, &again, sizeof(page)) == 0 || --retryleft == 0) - break; - - mdbx_info("meta[%u] was updated, re-read it", meta_number); - } - - if (!retryleft) { - mdbx_error("meta[%u] is too volatile, skip it", meta_number); - continue; - } - - if (page.mp_pgno != meta_number) { - mdbx_error("meta[%u] has invalid pageno %" PRIaPGNO, meta_number, - page.mp_pgno); - return MDBX_INVALID; - } - - if (!F_ISSET(page.mp_flags, P_META)) { - mdbx_error("page #%u not a meta-page", meta_number); - return MDBX_INVALID; - } - - if (page.mp_meta.mm_magic_and_version != MDBX_DATA_MAGIC && - page.mp_meta.mm_magic_and_version != MDBX_DATA_DEBUG) { - mdbx_error("meta[%u] has invalid magic/version %" PRIx64, meta_number, - page.mp_meta.mm_magic_and_version); - return ((page.mp_meta.mm_magic_and_version >> 8) != MDBX_MAGIC) - ? MDBX_INVALID - : MDBX_VERSION_MISMATCH; - } - - if (page.mp_meta.mm_txnid_a != page.mp_meta.mm_txnid_b) { - mdbx_warning("meta[%u] not completely updated, skip it", meta_number); - continue; - } - - /* LY: check signature as a checksum */ - if (META_IS_STEADY(&page.mp_meta) && - page.mp_meta.mm_datasync_sign != mdbx_meta_sign(&page.mp_meta)) { - mdbx_notice("meta[%u] has invalid steady-checksum (0x%" PRIx64 - " != 0x%" PRIx64 "), skip it", - meta_number, page.mp_meta.mm_datasync_sign, - mdbx_meta_sign(&page.mp_meta)); - continue; - } - - /* LY: check pagesize */ - if (!mdbx_is_power2(page.mp_meta.mm_psize) || - page.mp_meta.mm_psize < MIN_PAGESIZE || - page.mp_meta.mm_psize > MAX_PAGESIZE) { - mdbx_notice("meta[%u] has invalid pagesize (%u), skip it", meta_number, - page.mp_meta.mm_psize); - rc = MDBX_VERSION_MISMATCH; - continue; - } - - mdbx_debug("read meta%" PRIaPGNO " = root %" PRIaPGNO "/%" PRIaPGNO - ", geo %" PRIaPGNO "/%" PRIaPGNO "-%" PRIaPGNO "/%" PRIaPGNO - " +%u -%u, txn_id %" PRIaTXN ", %s", - page.mp_pgno, page.mp_meta.mm_dbs[MAIN_DBI].md_root, - page.mp_meta.mm_dbs[FREE_DBI].md_root, page.mp_meta.mm_geo.lower, - page.mp_meta.mm_geo.next, page.mp_meta.mm_geo.now, - page.mp_meta.mm_geo.upper, page.mp_meta.mm_geo.grow, - page.mp_meta.mm_geo.shrink, page.mp_meta.mm_txnid_a, - mdbx_durable_str(&page.mp_meta)); - - /* LY: check min-pages value */ - if (page.mp_meta.mm_geo.lower < MIN_PAGENO || - page.mp_meta.mm_geo.lower > MAX_PAGENO) { - mdbx_notice("meta[%u] has invalid min-pages (%" PRIaPGNO "), skip it", - meta_number, page.mp_meta.mm_geo.lower); - rc = MDBX_INVALID; - continue; - } - - /* LY: check max-pages value */ - if (page.mp_meta.mm_geo.upper < MIN_PAGENO || - page.mp_meta.mm_geo.upper > MAX_PAGENO || - page.mp_meta.mm_geo.upper < page.mp_meta.mm_geo.lower) { - mdbx_notice("meta[%u] has invalid max-pages (%" PRIaPGNO "), skip it", - meta_number, page.mp_meta.mm_geo.upper); - rc = MDBX_INVALID; - continue; - } - - /* LY: check end_pgno */ - if (page.mp_meta.mm_geo.now < page.mp_meta.mm_geo.lower || - page.mp_meta.mm_geo.now > page.mp_meta.mm_geo.upper) { - mdbx_notice("meta[%u] has invalid end-pageno (%" PRIaPGNO "), skip it", - meta_number, page.mp_meta.mm_geo.now); - rc = MDBX_CORRUPTED; - continue; - } - - /* LY: check last_pgno */ - if (page.mp_meta.mm_geo.next < MIN_PAGENO || - page.mp_meta.mm_geo.next - 1 > MAX_PAGENO) { - mdbx_notice("meta[%u] has invalid next-pageno (%" PRIaPGNO "), skip it", - meta_number, page.mp_meta.mm_geo.next); - rc = MDBX_CORRUPTED; - continue; - } - - /* LY: check filesize & used_bytes */ - const uint64_t used_bytes = - page.mp_meta.mm_geo.next * (uint64_t)page.mp_meta.mm_psize; - if (used_bytes > *filesize) { - mdbx_notice("meta[%u] used-bytes (%" PRIu64 ") beyond filesize (%" PRIu64 - "), skip it", - meta_number, used_bytes, *filesize); - rc = MDBX_CORRUPTED; - continue; - } - - /* LY: check mapsize limits */ - const uint64_t mapsize_min = - page.mp_meta.mm_geo.lower * (uint64_t)page.mp_meta.mm_psize; - STATIC_ASSERT(MAX_MAPSIZE < SSIZE_MAX - MAX_PAGESIZE); - STATIC_ASSERT(MIN_MAPSIZE < MAX_MAPSIZE); - if (mapsize_min < MIN_MAPSIZE || mapsize_min > MAX_MAPSIZE) { - mdbx_notice("meta[%u] has invalid min-mapsize (%" PRIu64 "), skip it", - meta_number, mapsize_min); - rc = MDBX_VERSION_MISMATCH; - continue; - } - - const uint64_t mapsize_max = - page.mp_meta.mm_geo.upper * (uint64_t)page.mp_meta.mm_psize; - STATIC_ASSERT(MIN_MAPSIZE < MAX_MAPSIZE); - if (mapsize_max > MAX_MAPSIZE || - MAX_PAGENO < mdbx_roundup2((size_t)mapsize_max, env->me_os_psize) / - (size_t)page.mp_meta.mm_psize) { - if (page.mp_meta.mm_geo.next - 1 > MAX_PAGENO || - used_bytes > MAX_MAPSIZE) { - mdbx_notice("meta[%u] has too large max-mapsize (%" PRIu64 "), skip it", - meta_number, mapsize_max); - rc = MDBX_TOO_LARGE; - continue; - } - - /* allow to open large DB from a 32-bit environment */ - mdbx_notice("meta[%u] has too large max-mapsize (%" PRIu64 "), " - "but size of used space still acceptable (%" PRIu64 ")", - meta_number, mapsize_max, used_bytes); - page.mp_meta.mm_geo.upper = (pgno_t)(MAX_MAPSIZE / page.mp_meta.mm_psize); - if (page.mp_meta.mm_geo.now > page.mp_meta.mm_geo.upper) - page.mp_meta.mm_geo.now = page.mp_meta.mm_geo.upper; - } - - if (page.mp_meta.mm_geo.next > page.mp_meta.mm_geo.now) { - mdbx_notice("meta[%u] next-pageno (%" PRIaPGNO - ") is beyond end-pgno (%" PRIaPGNO "), skip it", - meta_number, page.mp_meta.mm_geo.next, - page.mp_meta.mm_geo.now); - rc = MDBX_CORRUPTED; - continue; - } - - /* LY: FreeDB root */ - if (page.mp_meta.mm_dbs[FREE_DBI].md_root == P_INVALID) { - if (page.mp_meta.mm_dbs[FREE_DBI].md_branch_pages || - page.mp_meta.mm_dbs[FREE_DBI].md_depth || - page.mp_meta.mm_dbs[FREE_DBI].md_entries || - page.mp_meta.mm_dbs[FREE_DBI].md_leaf_pages || - page.mp_meta.mm_dbs[FREE_DBI].md_overflow_pages) { - mdbx_notice("meta[%u] has false-empty freedb, skip it", meta_number); - rc = MDBX_CORRUPTED; - continue; - } - } else if (page.mp_meta.mm_dbs[FREE_DBI].md_root >= - page.mp_meta.mm_geo.next) { - mdbx_notice("meta[%u] has invalid freedb-root %" PRIaPGNO ", skip it", - meta_number, page.mp_meta.mm_dbs[FREE_DBI].md_root); - rc = MDBX_CORRUPTED; - continue; - } - - /* LY: MainDB root */ - if (page.mp_meta.mm_dbs[MAIN_DBI].md_root == P_INVALID) { - if (page.mp_meta.mm_dbs[MAIN_DBI].md_branch_pages || - page.mp_meta.mm_dbs[MAIN_DBI].md_depth || - page.mp_meta.mm_dbs[MAIN_DBI].md_entries || - page.mp_meta.mm_dbs[MAIN_DBI].md_leaf_pages || - page.mp_meta.mm_dbs[MAIN_DBI].md_overflow_pages) { - mdbx_notice("meta[%u] has false-empty maindb", meta_number); - rc = MDBX_CORRUPTED; - continue; - } - } else if (page.mp_meta.mm_dbs[MAIN_DBI].md_root >= - page.mp_meta.mm_geo.next) { - mdbx_notice("meta[%u] has invalid maindb-root %" PRIaPGNO ", skip it", - meta_number, page.mp_meta.mm_dbs[MAIN_DBI].md_root); - rc = MDBX_CORRUPTED; - continue; - } - - if (page.mp_meta.mm_txnid_a == 0) { - mdbx_warning("meta[%u] has zero txnid, skip it", meta_number); - continue; - } - - if (mdbx_meta_ot(prefer_noweak, env, meta, &page.mp_meta)) { - *meta = page.mp_meta; - if (META_IS_WEAK(meta)) - loop_limit += 1; /* LY: should re-read to hush race with update */ - mdbx_info("latch meta[%u]", meta_number); - } - } - - if (META_IS_WEAK(meta)) { - mdbx_error("no usable meta-pages, database is corrupted"); - return rc; - } - - return MDBX_SUCCESS; -} - -static MDBX_page *__cold mdbx_meta_model(const MDBX_env *env, MDBX_page *model, - unsigned num) { - - mdbx_ensure(env, mdbx_is_power2(env->me_psize)); - mdbx_ensure(env, env->me_psize >= MIN_PAGESIZE); - mdbx_ensure(env, env->me_psize <= MAX_PAGESIZE); - mdbx_ensure(env, env->me_dbgeo.lower >= MIN_MAPSIZE); - mdbx_ensure(env, env->me_dbgeo.upper <= MAX_MAPSIZE); - mdbx_ensure(env, env->me_dbgeo.now >= env->me_dbgeo.lower); - mdbx_ensure(env, env->me_dbgeo.now <= env->me_dbgeo.upper); - - memset(model, 0, sizeof(*model)); - model->mp_pgno = num; - model->mp_flags = P_META; - model->mp_meta.mm_magic_and_version = MDBX_DATA_MAGIC; - - model->mp_meta.mm_geo.lower = bytes2pgno(env, env->me_dbgeo.lower); - model->mp_meta.mm_geo.upper = bytes2pgno(env, env->me_dbgeo.upper); - model->mp_meta.mm_geo.grow = (uint16_t)bytes2pgno(env, env->me_dbgeo.grow); - model->mp_meta.mm_geo.shrink = - (uint16_t)bytes2pgno(env, env->me_dbgeo.shrink); - model->mp_meta.mm_geo.now = bytes2pgno(env, env->me_dbgeo.now); - model->mp_meta.mm_geo.next = NUM_METAS; - - mdbx_ensure(env, model->mp_meta.mm_geo.lower >= MIN_PAGENO); - mdbx_ensure(env, model->mp_meta.mm_geo.upper <= MAX_PAGENO); - mdbx_ensure(env, model->mp_meta.mm_geo.now >= model->mp_meta.mm_geo.lower); - mdbx_ensure(env, model->mp_meta.mm_geo.now <= model->mp_meta.mm_geo.upper); - mdbx_ensure(env, model->mp_meta.mm_geo.next >= MIN_PAGENO); - mdbx_ensure(env, model->mp_meta.mm_geo.next <= model->mp_meta.mm_geo.now); - mdbx_ensure(env, model->mp_meta.mm_geo.grow == - bytes2pgno(env, env->me_dbgeo.grow)); - mdbx_ensure(env, model->mp_meta.mm_geo.shrink == - bytes2pgno(env, env->me_dbgeo.shrink)); - - model->mp_meta.mm_psize = env->me_psize; - model->mp_meta.mm_flags = (uint16_t)env->me_flags; - model->mp_meta.mm_flags |= - MDBX_INTEGERKEY; /* this is mm_dbs[FREE_DBI].md_flags */ - model->mp_meta.mm_dbs[FREE_DBI].md_root = P_INVALID; - model->mp_meta.mm_dbs[MAIN_DBI].md_root = P_INVALID; - mdbx_meta_set_txnid(env, &model->mp_meta, MIN_TXNID + num); - model->mp_meta.mm_datasync_sign = mdbx_meta_sign(&model->mp_meta); - return (MDBX_page *)((uint8_t *)model + env->me_psize); -} - -/* Fill in most of the zeroed meta-pages for an empty database environment. - * Return pointer to recenly (head) meta-page. */ -static MDBX_page *__cold mdbx_init_metas(const MDBX_env *env, void *buffer) { - MDBX_page *page0 = (MDBX_page *)buffer; - MDBX_page *page1 = mdbx_meta_model(env, page0, 0); - MDBX_page *page2 = mdbx_meta_model(env, page1, 1); - mdbx_meta_model(env, page2, 2); - mdbx_assert(env, !mdbx_meta_eq(env, &page0->mp_meta, &page1->mp_meta)); - mdbx_assert(env, !mdbx_meta_eq(env, &page1->mp_meta, &page2->mp_meta)); - mdbx_assert(env, !mdbx_meta_eq(env, &page2->mp_meta, &page0->mp_meta)); - return page2; -} - -static int mdbx_sync_locked(MDBX_env *env, unsigned flags, - MDBX_meta *const pending) { - mdbx_assert(env, ((env->me_flags ^ flags) & MDBX_WRITEMAP) == 0); - MDBX_meta *const meta0 = METAPAGE(env, 0); - MDBX_meta *const meta1 = METAPAGE(env, 1); - MDBX_meta *const meta2 = METAPAGE(env, 2); - MDBX_meta *const head = mdbx_meta_head(env); - - mdbx_assert(env, mdbx_meta_eq_mask(env) == 0); - mdbx_assert(env, - pending < METAPAGE(env, 0) || pending > METAPAGE(env, NUM_METAS)); - mdbx_assert(env, (env->me_flags & (MDBX_RDONLY | MDBX_FATAL_ERROR)) == 0); - mdbx_assert(env, !META_IS_STEADY(head) || env->me_sync_pending != 0); - mdbx_assert(env, pending->mm_geo.next <= pending->mm_geo.now); - - const size_t usedbytes = pgno_align2os_bytes(env, pending->mm_geo.next); - if (env->me_sync_threshold && env->me_sync_pending >= env->me_sync_threshold) - flags &= MDBX_WRITEMAP | MDBX_SHRINK_ALLOWED; /* force steady */ - - /* LY: check conditions to shrink datafile */ - const pgno_t backlog_gap = - pending->mm_dbs[FREE_DBI].md_depth + mdbx_backlog_extragap(env); - pgno_t shrink = 0; - if ((flags & MDBX_SHRINK_ALLOWED) && pending->mm_geo.shrink && - pending->mm_geo.now - pending->mm_geo.next > - pending->mm_geo.shrink + backlog_gap) { - const pgno_t aligner = - pending->mm_geo.grow ? pending->mm_geo.grow : pending->mm_geo.shrink; - const pgno_t with_backlog_gap = pending->mm_geo.next + backlog_gap; - const pgno_t aligned = pgno_align2os_pgno( - env, with_backlog_gap + aligner - with_backlog_gap % aligner); - const pgno_t bottom = - (aligned > pending->mm_geo.lower) ? aligned : pending->mm_geo.lower; - if (pending->mm_geo.now > bottom) { - flags &= MDBX_WRITEMAP | MDBX_SHRINK_ALLOWED; /* force steady */ - shrink = pending->mm_geo.now - bottom; - pending->mm_geo.now = bottom; - if (mdbx_meta_txnid_stable(env, head) == pending->mm_txnid_a) - mdbx_meta_set_txnid(env, pending, pending->mm_txnid_a + 1); - } - } - - /* LY: step#1 - sync previously written/updated data-pages */ - int rc = MDBX_RESULT_TRUE; - if (env->me_sync_pending && (flags & MDBX_NOSYNC) == 0) { - mdbx_assert(env, ((flags ^ env->me_flags) & MDBX_WRITEMAP) == 0); - MDBX_meta *const steady = mdbx_meta_steady(env); - if (flags & MDBX_WRITEMAP) { - rc = mdbx_msync(&env->me_dxb_mmap, 0, usedbytes, flags & MDBX_MAPASYNC); - if (unlikely(rc != MDBX_SUCCESS)) - goto fail; - if ((flags & MDBX_MAPASYNC) == 0) { - if (unlikely(pending->mm_geo.next > steady->mm_geo.now)) { - rc = mdbx_filesize_sync(env->me_fd); - if (unlikely(rc != MDBX_SUCCESS)) - goto fail; - } - env->me_sync_pending = 0; - } - } else { - rc = mdbx_filesync(env->me_fd, pending->mm_geo.next > steady->mm_geo.now); - if (unlikely(rc != MDBX_SUCCESS)) - goto fail; - env->me_sync_pending = 0; - } - } - - /* Steady or Weak */ - if (env->me_sync_pending == 0) { - pending->mm_datasync_sign = mdbx_meta_sign(pending); - } else { - pending->mm_datasync_sign = - (flags & MDBX_UTTERLY_NOSYNC) == MDBX_UTTERLY_NOSYNC - ? MDBX_DATASIGN_NONE - : MDBX_DATASIGN_WEAK; - } - - MDBX_meta *target = nullptr; - if (mdbx_meta_txnid_stable(env, head) == pending->mm_txnid_a) { - mdbx_assert(env, memcmp(&head->mm_dbs, &pending->mm_dbs, - sizeof(head->mm_dbs)) == 0); - mdbx_assert(env, memcmp(&head->mm_canary, &pending->mm_canary, - sizeof(head->mm_canary)) == 0); - mdbx_assert(env, memcmp(&head->mm_geo, &pending->mm_geo, - sizeof(pending->mm_geo)) == 0); - if (!META_IS_STEADY(head) && META_IS_STEADY(pending)) - target = head; - else { - mdbx_ensure(env, mdbx_meta_eq(env, head, pending)); - mdbx_debug("skip update meta"); - return MDBX_SUCCESS; - } - } else if (head == meta0) - target = mdbx_meta_ancient(prefer_steady, env, meta1, meta2); - else if (head == meta1) - target = mdbx_meta_ancient(prefer_steady, env, meta0, meta2); - else { - mdbx_assert(env, head == meta2); - target = mdbx_meta_ancient(prefer_steady, env, meta0, meta1); - } - - /* LY: step#2 - update meta-page. */ - mdbx_debug("writing meta%" PRIaPGNO " = root %" PRIaPGNO "/%" PRIaPGNO - ", geo %" PRIaPGNO "/%" PRIaPGNO "-%" PRIaPGNO "/%" PRIaPGNO - " +%u -%u, txn_id %" PRIaTXN ", %s", - container_of(target, MDBX_page, mp_data)->mp_pgno, - pending->mm_dbs[MAIN_DBI].md_root, - pending->mm_dbs[FREE_DBI].md_root, pending->mm_geo.lower, - pending->mm_geo.next, pending->mm_geo.now, pending->mm_geo.upper, - pending->mm_geo.grow, pending->mm_geo.shrink, pending->mm_txnid_a, - mdbx_durable_str(pending)); - - mdbx_debug("meta0: %s, %s, txn_id %" PRIaTXN ", root %" PRIaPGNO - "/%" PRIaPGNO, - (meta0 == head) ? "head" : (meta0 == target) ? "tail" : "stay", - mdbx_durable_str(meta0), mdbx_meta_txnid_fluid(env, meta0), - meta0->mm_dbs[MAIN_DBI].md_root, meta0->mm_dbs[FREE_DBI].md_root); - mdbx_debug("meta1: %s, %s, txn_id %" PRIaTXN ", root %" PRIaPGNO - "/%" PRIaPGNO, - (meta1 == head) ? "head" : (meta1 == target) ? "tail" : "stay", - mdbx_durable_str(meta1), mdbx_meta_txnid_fluid(env, meta1), - meta1->mm_dbs[MAIN_DBI].md_root, meta1->mm_dbs[FREE_DBI].md_root); - mdbx_debug("meta2: %s, %s, txn_id %" PRIaTXN ", root %" PRIaPGNO - "/%" PRIaPGNO, - (meta2 == head) ? "head" : (meta2 == target) ? "tail" : "stay", - mdbx_durable_str(meta2), mdbx_meta_txnid_fluid(env, meta2), - meta2->mm_dbs[MAIN_DBI].md_root, meta2->mm_dbs[FREE_DBI].md_root); - - mdbx_assert(env, !mdbx_meta_eq(env, pending, meta0)); - mdbx_assert(env, !mdbx_meta_eq(env, pending, meta1)); - mdbx_assert(env, !mdbx_meta_eq(env, pending, meta2)); - - mdbx_assert(env, ((env->me_flags ^ flags) & MDBX_WRITEMAP) == 0); - mdbx_ensure(env, target == head || mdbx_meta_txnid_stable(env, target) < - pending->mm_txnid_a); - if (env->me_flags & MDBX_WRITEMAP) { - mdbx_jitter4testing(true); - if (likely(target != head)) { - /* LY: 'invalidate' the meta. */ - target->mm_datasync_sign = MDBX_DATASIGN_WEAK; - mdbx_meta_update_begin(env, target, pending->mm_txnid_a); -#ifndef NDEBUG - /* debug: provoke failure to catch a violators */ - memset(target->mm_dbs, 0xCC, - sizeof(target->mm_dbs) + sizeof(target->mm_canary)); - mdbx_jitter4testing(false); -#endif - - /* LY: update info */ - target->mm_geo = pending->mm_geo; - target->mm_dbs[FREE_DBI] = pending->mm_dbs[FREE_DBI]; - target->mm_dbs[MAIN_DBI] = pending->mm_dbs[MAIN_DBI]; - target->mm_canary = pending->mm_canary; - mdbx_jitter4testing(true); - mdbx_coherent_barrier(); - - /* LY: 'commit' the meta */ - mdbx_meta_update_end(env, target, pending->mm_txnid_b); - mdbx_jitter4testing(true); - } else { - /* dangerous case (target == head), only mm_datasync_sign could - * me updated, check assertions once again */ - mdbx_ensure(env, - mdbx_meta_txnid_stable(env, head) == pending->mm_txnid_a && - !META_IS_STEADY(head) && META_IS_STEADY(pending)); - mdbx_ensure(env, memcmp(&head->mm_geo, &pending->mm_geo, - sizeof(head->mm_geo)) == 0); - mdbx_ensure(env, memcmp(&head->mm_dbs, &pending->mm_dbs, - sizeof(head->mm_dbs)) == 0); - mdbx_ensure(env, memcmp(&head->mm_canary, &pending->mm_canary, - sizeof(head->mm_canary)) == 0); - } - target->mm_datasync_sign = pending->mm_datasync_sign; - mdbx_coherent_barrier(); - mdbx_jitter4testing(true); - } else { - rc = mdbx_pwrite(env->me_fd, pending, sizeof(MDBX_meta), - (uint8_t *)target - env->me_map); - if (unlikely(rc != MDBX_SUCCESS)) { - undo: - mdbx_debug("write failed, disk error?"); - /* On a failure, the pagecache still contains the new data. - * Try write some old data back, to prevent it from being used. */ - mdbx_pwrite(env->me_fd, (void *)target, sizeof(MDBX_meta), - (uint8_t *)target - env->me_map); - goto fail; - } - mdbx_invalidate_cache(target, sizeof(MDBX_meta)); - } - - /* LY: step#3 - sync meta-pages. */ - mdbx_assert(env, ((env->me_flags ^ flags) & MDBX_WRITEMAP) == 0); - if ((flags & (MDBX_NOSYNC | MDBX_NOMETASYNC)) == 0) { - mdbx_assert(env, ((flags ^ env->me_flags) & MDBX_WRITEMAP) == 0); - if (flags & MDBX_WRITEMAP) { - const size_t offset = - ((uint8_t *)container_of(head, MDBX_page, mp_meta)) - - env->me_dxb_mmap.dxb; - const size_t paged_offset = offset & ~(env->me_os_psize - 1); - const size_t paged_length = mdbx_roundup2( - env->me_psize + offset - paged_offset, env->me_os_psize); - rc = mdbx_msync(&env->me_dxb_mmap, paged_offset, paged_length, - flags & MDBX_MAPASYNC); - if (unlikely(rc != MDBX_SUCCESS)) - goto fail; - } else { - rc = mdbx_filesync(env->me_fd, false); - if (rc != MDBX_SUCCESS) - goto undo; - } - } - - /* LY: shrink datafile if needed */ - if (unlikely(shrink)) { - mdbx_info("shrink to %" PRIaPGNO " pages (-%" PRIaPGNO ")", - pending->mm_geo.now, shrink); - rc = mdbx_mapresize(env, pending->mm_geo.now, pending->mm_geo.upper); - if (MDBX_IS_ERROR(rc)) - goto fail; - } - - return MDBX_SUCCESS; - -fail: - env->me_flags |= MDBX_FATAL_ERROR; - return rc; -} - -int __cold mdbx_env_get_maxkeysize(MDBX_env *env) { - if (!env || env->me_signature != MDBX_ME_SIGNATURE || !env->me_maxkey_limit) - return -MDBX_EINVAL; - return env->me_maxkey_limit; -} - -#define mdbx_nodemax(pagesize) \ - (((((pagesize)-PAGEHDRSZ) / MDBX_MINKEYS) & -(intptr_t)2) - sizeof(indx_t)) - -#define mdbx_maxkey(nodemax) ((nodemax) - (NODESIZE + sizeof(MDBX_db))) - -#define mdbx_maxfree1pg(pagesize) (((pagesize)-PAGEHDRSZ) / sizeof(pgno_t) - 1) - -int mdbx_get_maxkeysize(size_t pagesize) { - if (pagesize == 0) - pagesize = mdbx_syspagesize(); - - intptr_t nodemax = mdbx_nodemax(pagesize); - if (nodemax < 0) - return -MDBX_EINVAL; - - intptr_t maxkey = mdbx_maxkey(nodemax); - return (maxkey > 0 && maxkey < INT_MAX) ? (int)maxkey : -MDBX_EINVAL; -} - -static void __cold mdbx_setup_pagesize(MDBX_env *env, const size_t pagesize) { - STATIC_ASSERT(SSIZE_MAX > MAX_MAPSIZE); - STATIC_ASSERT(MIN_PAGESIZE > sizeof(MDBX_page)); - mdbx_ensure(env, mdbx_is_power2(pagesize)); - mdbx_ensure(env, pagesize >= MIN_PAGESIZE); - mdbx_ensure(env, pagesize <= MAX_PAGESIZE); - env->me_psize = (unsigned)pagesize; - - STATIC_ASSERT(mdbx_maxfree1pg(MIN_PAGESIZE) > 42); - STATIC_ASSERT(mdbx_maxfree1pg(MAX_PAGESIZE) < MDBX_PNL_DB_MAX); - const intptr_t maxfree_1pg = (pagesize - PAGEHDRSZ) / sizeof(pgno_t) - 1; - mdbx_ensure(env, maxfree_1pg > 42 && maxfree_1pg < MDBX_PNL_DB_MAX); - env->me_maxfree_1pg = (unsigned)maxfree_1pg; - - STATIC_ASSERT(mdbx_nodemax(MIN_PAGESIZE) > 42); - STATIC_ASSERT(mdbx_nodemax(MAX_PAGESIZE) < UINT16_MAX); - const intptr_t nodemax = mdbx_nodemax(pagesize); - mdbx_ensure(env, nodemax > 42 && nodemax < UINT16_MAX); - env->me_nodemax = (unsigned)nodemax; - - STATIC_ASSERT(mdbx_maxkey(MIN_PAGESIZE) > 42); - STATIC_ASSERT(mdbx_maxkey(MIN_PAGESIZE) < MIN_PAGESIZE); - STATIC_ASSERT(mdbx_maxkey(MAX_PAGESIZE) > 42); - STATIC_ASSERT(mdbx_maxkey(MAX_PAGESIZE) < MAX_PAGESIZE); - const intptr_t maxkey_limit = mdbx_maxkey(env->me_nodemax); - mdbx_ensure(env, maxkey_limit > 42 && (size_t)maxkey_limit < pagesize); - env->me_maxkey_limit = (unsigned)maxkey_limit; - - env->me_psize2log = mdbx_log2(pagesize); - mdbx_assert(env, pgno2bytes(env, 1) == pagesize); - mdbx_assert(env, bytes2pgno(env, pagesize + pagesize) == 2); -} - -int __cold mdbx_env_create(MDBX_env **penv) { - MDBX_env *env = calloc(1, sizeof(MDBX_env)); - if (!env) - return MDBX_ENOMEM; - - env->me_maxreaders = DEFAULT_READERS; - env->me_maxdbs = env->me_numdbs = CORE_DBS; - env->me_fd = INVALID_HANDLE_VALUE; - env->me_lfd = INVALID_HANDLE_VALUE; - env->me_pid = mdbx_getpid(); - - int rc; - const size_t os_psize = mdbx_syspagesize(); - if (!mdbx_is_power2(os_psize) || os_psize < MIN_PAGESIZE) { - mdbx_error("unsuitable system pagesize %" PRIuPTR, os_psize); - rc = MDBX_INCOMPATIBLE; - goto bailout; - } - env->me_os_psize = (unsigned)os_psize; - mdbx_setup_pagesize(env, env->me_os_psize); - - rc = mdbx_fastmutex_init(&env->me_dbi_lock); - if (unlikely(rc != MDBX_SUCCESS)) - goto bailout; - -#if defined(_WIN32) || defined(_WIN64) - mdbx_srwlock_Init(&env->me_remap_guard); - InitializeCriticalSection(&env->me_windowsbug_lock); -#else - rc = mdbx_fastmutex_init(&env->me_remap_guard); - if (unlikely(rc != MDBX_SUCCESS)) { - mdbx_fastmutex_destroy(&env->me_dbi_lock); - goto bailout; - } - rc = mdbx_fastmutex_init(&env->me_lckless_wmutex); - if (unlikely(rc != MDBX_SUCCESS)) { - mdbx_fastmutex_destroy(&env->me_remap_guard); - mdbx_fastmutex_destroy(&env->me_dbi_lock); - goto bailout; - } -#endif /* Windows */ - - VALGRIND_CREATE_MEMPOOL(env, 0, 0); - env->me_signature = MDBX_ME_SIGNATURE; - *penv = env; - return MDBX_SUCCESS; - -bailout: - free(env); - *penv = nullptr; - return rc; -} - -static int __cold mdbx_env_map(MDBX_env *env, size_t usedsize) { - int rc = mdbx_mmap(env->me_flags, &env->me_dxb_mmap, env->me_dbgeo.now, - env->me_dbgeo.upper); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - -#ifdef MADV_DONTFORK - if (madvise(env->me_map, env->me_mapsize, MADV_DONTFORK)) - return errno; -#endif - -#ifdef MADV_NOHUGEPAGE - (void)madvise(env->me_map, env->me_mapsize, MADV_NOHUGEPAGE); -#endif - -#if defined(MADV_DODUMP) && defined(MADV_DONTDUMP) - const size_t meta_length = pgno2bytes(env, NUM_METAS); - (void)madvise(env->me_map, meta_length, MADV_DODUMP); - if (!(env->me_flags & MDBX_PAGEPERTURB)) - (void)madvise(env->me_map + meta_length, env->me_mapsize - meta_length, - MADV_DONTDUMP); -#endif - -#ifdef MADV_REMOVE - if (usedsize && (env->me_flags & MDBX_WRITEMAP)) { - (void)madvise(env->me_map + usedsize, env->me_mapsize - usedsize, - MADV_REMOVE); - } -#else - (void)usedsize; -#endif - -#if defined(MADV_RANDOM) && defined(MADV_WILLNEED) - /* Turn on/off readahead. It's harmful when the DB is larger than RAM. */ - if (madvise(env->me_map, env->me_mapsize, - (env->me_flags & MDBX_NORDAHEAD) ? MADV_RANDOM : MADV_WILLNEED)) - return errno; -#endif - -#ifdef USE_VALGRIND - env->me_valgrind_handle = - VALGRIND_CREATE_BLOCK(env->me_map, env->me_mapsize, "mdbx"); -#endif - - return MDBX_SUCCESS; -} - -LIBMDBX_API int mdbx_env_set_geometry(MDBX_env *env, intptr_t size_lower, - intptr_t size_now, intptr_t size_upper, - intptr_t growth_step, - intptr_t shrink_threshold, - intptr_t pagesize) { - if (unlikely(!env)) - return MDBX_EINVAL; - - if (unlikely(env->me_signature != MDBX_ME_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(env->me_pid != mdbx_getpid())) - env->me_flags |= MDBX_FATAL_ERROR; - - if (unlikely(env->me_flags & MDBX_FATAL_ERROR)) - return MDBX_PANIC; - - const bool inside_txn = - (env->me_txn0 && env->me_txn0->mt_owner == mdbx_thread_self()); - -#if MDBX_DEBUG - if (growth_step < 0) - growth_step = 1; - if (shrink_threshold < 0) - shrink_threshold = 1; -#endif - - bool need_unlock = false; - int rc = MDBX_PROBLEM; - if (env->me_map) { - /* env already mapped */ - if (!env->me_lck || (env->me_flags & MDBX_RDONLY)) - return MDBX_EACCESS; - - if (!inside_txn) { - int err = mdbx_txn_lock(env, false); - if (unlikely(err != MDBX_SUCCESS)) - return err; - need_unlock = true; - } - MDBX_meta *head = mdbx_meta_head(env); - - if (pagesize < 0) - pagesize = env->me_psize; - if (pagesize != (intptr_t)env->me_psize) { - rc = MDBX_EINVAL; - goto bailout; - } - - if (size_lower < 0) - size_lower = pgno2bytes(env, head->mm_geo.lower); - if (size_now < 0) - size_now = pgno2bytes(env, head->mm_geo.now); - if (size_upper < 0) - size_upper = pgno2bytes(env, head->mm_geo.upper); - if (growth_step < 0) - growth_step = pgno2bytes(env, head->mm_geo.grow); - if (shrink_threshold < 0) - shrink_threshold = pgno2bytes(env, head->mm_geo.shrink); - - const size_t usedbytes = pgno2bytes(env, head->mm_geo.next); - if ((size_t)size_upper < usedbytes) { - rc = MDBX_MAP_FULL; - goto bailout; - } - if ((size_t)size_now < usedbytes) - size_now = usedbytes; - } else { - /* env NOT yet mapped */ - if (unlikely(inside_txn)) - return MDBX_PANIC; - - if (pagesize < 0) { - pagesize = env->me_os_psize; - if ((uintptr_t)pagesize > MAX_PAGESIZE) - pagesize = MAX_PAGESIZE; - mdbx_assert(env, (uintptr_t)pagesize >= MIN_PAGESIZE); - } - } - - if (pagesize < (intptr_t)MIN_PAGESIZE || pagesize > (intptr_t)MAX_PAGESIZE || - !mdbx_is_power2(pagesize)) { - rc = MDBX_EINVAL; - goto bailout; - } - - if (size_lower < 0) { - size_lower = MIN_MAPSIZE; - if (MIN_MAPSIZE / pagesize < MIN_PAGENO) - size_lower = MIN_PAGENO * pagesize; - } - - if (size_now < 0) { - size_now = DEFAULT_MAPSIZE; - if (size_now < size_lower) - size_now = size_lower; - } - - if (size_upper < 0) { - if ((size_t)size_now >= MAX_MAPSIZE / 2) - size_upper = MAX_MAPSIZE; - else if (MAX_MAPSIZE != MAX_MAPSIZE32 && - (size_t)size_now >= MAX_MAPSIZE32 / 2 && - (size_t)size_now <= MAX_MAPSIZE32 / 4 * 3) - size_upper = MAX_MAPSIZE32; - else { - size_upper = size_now + size_now; - if ((size_t)size_upper < DEFAULT_MAPSIZE * 2) - size_upper = DEFAULT_MAPSIZE * 2; - } - if ((size_t)size_upper / pagesize > MAX_PAGENO) - size_upper = pagesize * MAX_PAGENO; - } - - if (unlikely(size_lower < (intptr_t)MIN_MAPSIZE || size_lower > size_upper)) { - rc = MDBX_EINVAL; - goto bailout; - } - - if ((uint64_t)size_lower / pagesize < MIN_PAGENO) { - rc = MDBX_EINVAL; - goto bailout; - } - - if (unlikely((size_t)size_upper > MAX_MAPSIZE || - (uint64_t)size_upper / pagesize > MAX_PAGENO)) { - rc = MDBX_TOO_LARGE; - goto bailout; - } - - size_lower = mdbx_roundup2(size_lower, env->me_os_psize); - size_upper = mdbx_roundup2(size_upper, env->me_os_psize); - size_now = mdbx_roundup2(size_now, env->me_os_psize); - - /* LY: подбираем значение size_upper: - * - кратное размеру системной страницы - * - без нарушения MAX_MAPSIZE или MAX_PAGENO */ - while (unlikely((size_t)size_upper > MAX_MAPSIZE || - (uint64_t)size_upper / pagesize > MAX_PAGENO)) { - if ((size_t)size_upper < env->me_os_psize + MIN_MAPSIZE || - (size_t)size_upper < env->me_os_psize * (MIN_PAGENO + 1)) { - /* паранойа на случай переполнения при невероятных значениях */ - rc = MDBX_EINVAL; - goto bailout; - } - size_upper -= env->me_os_psize; - if ((size_t)size_upper < (size_t)size_lower) - size_lower = size_upper; - } - mdbx_assert(env, (size_upper - size_lower) % env->me_os_psize == 0); - - if (size_now < size_lower) - size_now = size_lower; - if (size_now > size_upper) - size_now = size_upper; - - if (growth_step < 0) { - growth_step = ((size_t)(size_upper - size_lower)) / 42; - if (growth_step > size_lower) - growth_step = size_lower; - if (growth_step < 65536) - growth_step = 65536; - if ((size_t)growth_step > MEGABYTE * 16) - growth_step = MEGABYTE * 16; - } - growth_step = mdbx_roundup2(growth_step, env->me_os_psize); - if (bytes2pgno(env, growth_step) > UINT16_MAX) - growth_step = pgno2bytes(env, UINT16_MAX); - - if (shrink_threshold < 0) { - shrink_threshold = growth_step + growth_step; - if (shrink_threshold < growth_step) - shrink_threshold = growth_step; - } - shrink_threshold = mdbx_roundup2(shrink_threshold, env->me_os_psize); - if (bytes2pgno(env, shrink_threshold) > UINT16_MAX) - shrink_threshold = pgno2bytes(env, UINT16_MAX); - - /* save user's geo-params for future open/create */ - env->me_dbgeo.lower = size_lower; - env->me_dbgeo.now = size_now; - env->me_dbgeo.upper = size_upper; - env->me_dbgeo.grow = growth_step; - env->me_dbgeo.shrink = shrink_threshold; - rc = MDBX_SUCCESS; - - if (env->me_map) { - /* apply new params */ - mdbx_assert(env, pagesize == (intptr_t)env->me_psize); - - MDBX_meta *head = mdbx_meta_head(env); - MDBX_meta meta = *head; - meta.mm_geo.lower = bytes2pgno(env, env->me_dbgeo.lower); - meta.mm_geo.now = bytes2pgno(env, env->me_dbgeo.now); - meta.mm_geo.upper = bytes2pgno(env, env->me_dbgeo.upper); - meta.mm_geo.grow = (uint16_t)bytes2pgno(env, env->me_dbgeo.grow); - meta.mm_geo.shrink = (uint16_t)bytes2pgno(env, env->me_dbgeo.shrink); - - mdbx_assert(env, env->me_dbgeo.lower >= MIN_MAPSIZE); - mdbx_assert(env, meta.mm_geo.lower >= MIN_PAGENO); - mdbx_assert(env, env->me_dbgeo.upper <= MAX_MAPSIZE); - mdbx_assert(env, meta.mm_geo.upper <= MAX_PAGENO); - mdbx_assert(env, meta.mm_geo.now >= meta.mm_geo.next); - mdbx_assert(env, env->me_dbgeo.upper >= env->me_dbgeo.lower); - mdbx_assert(env, meta.mm_geo.upper >= meta.mm_geo.now); - mdbx_assert(env, meta.mm_geo.now >= meta.mm_geo.lower); - mdbx_assert(env, meta.mm_geo.grow == bytes2pgno(env, env->me_dbgeo.grow)); - mdbx_assert(env, - meta.mm_geo.shrink == bytes2pgno(env, env->me_dbgeo.shrink)); - - if (memcmp(&meta.mm_geo, &head->mm_geo, sizeof(meta.mm_geo))) { - if (meta.mm_geo.now != head->mm_geo.now || - meta.mm_geo.upper != head->mm_geo.upper) { - rc = mdbx_mapresize(env, meta.mm_geo.now, meta.mm_geo.upper); - if (unlikely(rc != MDBX_SUCCESS)) - goto bailout; - head = /* base address could be changed */ mdbx_meta_head(env); - } - env->me_sync_pending += env->me_psize; - mdbx_meta_set_txnid(env, &meta, mdbx_meta_txnid_stable(env, head) + 1); - rc = mdbx_sync_locked(env, env->me_flags, &meta); - } - } else if (pagesize != (intptr_t)env->me_psize) { - mdbx_setup_pagesize(env, pagesize); - } - -bailout: - if (need_unlock) - mdbx_txn_unlock(env); - return rc; -} - -int __cold mdbx_env_set_mapsize(MDBX_env *env, size_t size) { - return mdbx_env_set_geometry(env, -1, size, -1, -1, -1, -1); -} - -int __cold mdbx_env_set_maxdbs(MDBX_env *env, MDBX_dbi dbs) { - if (unlikely(dbs > MAX_DBI)) - return MDBX_EINVAL; - - if (unlikely(!env)) - return MDBX_EINVAL; - - if (unlikely(env->me_signature != MDBX_ME_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(env->me_map)) - return MDBX_EPERM; - - env->me_maxdbs = dbs + CORE_DBS; - return MDBX_SUCCESS; -} - -int __cold mdbx_env_set_maxreaders(MDBX_env *env, unsigned readers) { - if (unlikely(readers < 1 || readers > INT16_MAX)) - return MDBX_EINVAL; - - if (unlikely(!env)) - return MDBX_EINVAL; - - if (unlikely(env->me_signature != MDBX_ME_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(env->me_map)) - return MDBX_EPERM; - - env->me_maxreaders = readers; - return MDBX_SUCCESS; -} - -int __cold mdbx_env_get_maxreaders(MDBX_env *env, unsigned *readers) { - if (!env || !readers) - return MDBX_EINVAL; - - if (unlikely(env->me_signature != MDBX_ME_SIGNATURE)) - return MDBX_EBADSIGN; - - *readers = env->me_maxreaders; - return MDBX_SUCCESS; -} - -/* Further setup required for opening an MDBX environment */ -static int __cold mdbx_setup_dxb(MDBX_env *env, int lck_rc) { - uint64_t filesize_before_mmap; - MDBX_meta meta; - int rc = MDBX_RESULT_FALSE; - int err = mdbx_read_header(env, &meta, &filesize_before_mmap); - if (unlikely(err != MDBX_SUCCESS)) { - if (lck_rc != /* lck exclusive */ MDBX_RESULT_TRUE || err != MDBX_ENODATA || - (env->me_flags & MDBX_RDONLY) != 0) - return err; - - mdbx_debug("create new database"); - rc = /* new database */ MDBX_RESULT_TRUE; - - if (!env->me_dbgeo.now) { - /* set defaults if not configured */ - err = mdbx_env_set_mapsize(env, DEFAULT_MAPSIZE); - if (unlikely(err != MDBX_SUCCESS)) - return err; - } - - void *buffer = calloc(NUM_METAS, env->me_psize); - if (!buffer) - return MDBX_ENOMEM; - - meta = mdbx_init_metas(env, buffer)->mp_meta; - err = mdbx_pwrite(env->me_fd, buffer, env->me_psize * NUM_METAS, 0); - free(buffer); - if (unlikely(err != MDBX_SUCCESS)) - return err; - - err = mdbx_ftruncate(env->me_fd, filesize_before_mmap = env->me_dbgeo.now); - if (unlikely(err != MDBX_SUCCESS)) - return err; - -#ifndef NDEBUG /* just for checking */ - err = mdbx_read_header(env, &meta, &filesize_before_mmap); - if (unlikely(err != MDBX_SUCCESS)) - return err; -#endif - } - - mdbx_info("header: root %" PRIaPGNO "/%" PRIaPGNO ", geo %" PRIaPGNO - "/%" PRIaPGNO "-%" PRIaPGNO "/%" PRIaPGNO - " +%u -%u, txn_id %" PRIaTXN ", %s", - meta.mm_dbs[MAIN_DBI].md_root, meta.mm_dbs[FREE_DBI].md_root, - meta.mm_geo.lower, meta.mm_geo.next, meta.mm_geo.now, - meta.mm_geo.upper, meta.mm_geo.grow, meta.mm_geo.shrink, - meta.mm_txnid_a, mdbx_durable_str(&meta)); - - mdbx_setup_pagesize(env, meta.mm_psize); - const size_t used_bytes = pgno2bytes(env, meta.mm_geo.next); - if ((env->me_flags & MDBX_RDONLY) /* readonly */ - || lck_rc != MDBX_RESULT_TRUE /* not exclusive */) { - /* use present params from db */ - err = mdbx_env_set_geometry( - env, meta.mm_geo.lower * (uint64_t)meta.mm_psize, - meta.mm_geo.now * (uint64_t)meta.mm_psize, - meta.mm_geo.upper * (uint64_t)meta.mm_psize, - meta.mm_geo.grow * (uint64_t)meta.mm_psize, - meta.mm_geo.shrink * (uint64_t)meta.mm_psize, meta.mm_psize); - if (unlikely(err != MDBX_SUCCESS)) { - mdbx_error("could not use present dbsize-params from db"); - return MDBX_INCOMPATIBLE; - } - } else if (env->me_dbgeo.now) { - /* silently growth to last used page */ - if (env->me_dbgeo.now < used_bytes) - env->me_dbgeo.now = used_bytes; - if (env->me_dbgeo.upper < used_bytes) - env->me_dbgeo.upper = used_bytes; - - /* apply preconfigured params, but only if substantial changes: - * - upper or lower limit changes - * - shrink theshold or growth step - * But ignore just chagne just a 'now/current' size. */ - if (bytes_align2os_bytes(env, env->me_dbgeo.upper) != - pgno_align2os_bytes(env, meta.mm_geo.upper) || - bytes_align2os_bytes(env, env->me_dbgeo.lower) != - pgno_align2os_bytes(env, meta.mm_geo.lower) || - bytes_align2os_bytes(env, env->me_dbgeo.shrink) != - pgno_align2os_bytes(env, meta.mm_geo.shrink) || - bytes_align2os_bytes(env, env->me_dbgeo.grow) != - pgno_align2os_bytes(env, meta.mm_geo.grow)) { - - if (env->me_dbgeo.shrink && env->me_dbgeo.now > used_bytes) - /* pre-shrink if enabled */ - env->me_dbgeo.now = used_bytes + env->me_dbgeo.shrink - - used_bytes % env->me_dbgeo.shrink; - - err = mdbx_env_set_geometry(env, env->me_dbgeo.lower, env->me_dbgeo.now, - env->me_dbgeo.upper, env->me_dbgeo.grow, - env->me_dbgeo.shrink, meta.mm_psize); - if (unlikely(err != MDBX_SUCCESS)) { - mdbx_error("could not apply preconfigured dbsize-params to db"); - return MDBX_INCOMPATIBLE; - } - - /* update meta fields */ - meta.mm_geo.now = bytes2pgno(env, env->me_dbgeo.now); - meta.mm_geo.lower = bytes2pgno(env, env->me_dbgeo.lower); - meta.mm_geo.upper = bytes2pgno(env, env->me_dbgeo.upper); - meta.mm_geo.grow = (uint16_t)bytes2pgno(env, env->me_dbgeo.grow); - meta.mm_geo.shrink = (uint16_t)bytes2pgno(env, env->me_dbgeo.shrink); - - mdbx_info("amended: root %" PRIaPGNO "/%" PRIaPGNO ", geo %" PRIaPGNO - "/%" PRIaPGNO "-%" PRIaPGNO "/%" PRIaPGNO - " +%u -%u, txn_id %" PRIaTXN ", %s", - meta.mm_dbs[MAIN_DBI].md_root, meta.mm_dbs[FREE_DBI].md_root, - meta.mm_geo.lower, meta.mm_geo.next, meta.mm_geo.now, - meta.mm_geo.upper, meta.mm_geo.grow, meta.mm_geo.shrink, - meta.mm_txnid_a, mdbx_durable_str(&meta)); - } - mdbx_ensure(env, meta.mm_geo.now >= meta.mm_geo.next); - } else { - /* geo-params not pre-configured by user, - * get current values from a meta. */ - env->me_dbgeo.now = pgno2bytes(env, meta.mm_geo.now); - env->me_dbgeo.lower = pgno2bytes(env, meta.mm_geo.lower); - env->me_dbgeo.upper = pgno2bytes(env, meta.mm_geo.upper); - env->me_dbgeo.grow = pgno2bytes(env, meta.mm_geo.grow); - env->me_dbgeo.shrink = pgno2bytes(env, meta.mm_geo.shrink); - } - - const size_t expected_bytes = - mdbx_roundup2(pgno2bytes(env, meta.mm_geo.now), env->me_os_psize); - mdbx_ensure(env, expected_bytes >= used_bytes); - if (filesize_before_mmap != expected_bytes) { - if (lck_rc != /* lck exclusive */ MDBX_RESULT_TRUE) { - mdbx_info("filesize mismatch (expect %" PRIuPTR "/%" PRIaPGNO - ", have %" PRIu64 "/%" PRIaPGNO "), " - "assume collision in non-exclusive mode", - expected_bytes, bytes2pgno(env, expected_bytes), - filesize_before_mmap, - bytes2pgno(env, (size_t)filesize_before_mmap)); - } else { - mdbx_notice("filesize mismatch (expect %" PRIuSIZE "/%" PRIaPGNO - ", have %" PRIu64 "/%" PRIaPGNO ")", - expected_bytes, bytes2pgno(env, expected_bytes), - filesize_before_mmap, - bytes2pgno(env, (size_t)filesize_before_mmap)); - if (filesize_before_mmap < used_bytes) { - mdbx_error("last-page beyond end-of-file (last %" PRIaPGNO - ", have %" PRIaPGNO ")", - meta.mm_geo.next, - bytes2pgno(env, (size_t)filesize_before_mmap)); - return MDBX_CORRUPTED; - } - - if (env->me_flags & MDBX_RDONLY) { - mdbx_notice("ignore filesize mismatch in readonly-mode"); - } else { - mdbx_info("resize datafile to %" PRIuSIZE " bytes, %" PRIaPGNO " pages", - expected_bytes, bytes2pgno(env, expected_bytes)); - err = mdbx_ftruncate(env->me_fd, expected_bytes); - if (unlikely(err != MDBX_SUCCESS)) { - mdbx_error("error %d, while resize datafile to %" PRIuSIZE - " bytes, %" PRIaPGNO " pages", - rc, expected_bytes, bytes2pgno(env, expected_bytes)); - return err; - } - filesize_before_mmap = expected_bytes; - } - } - } - - err = mdbx_env_map(env, (lck_rc != /* lck exclusive */ MDBX_RESULT_TRUE) - ? 0 - : expected_bytes); - if (err != MDBX_SUCCESS) - return err; - - const unsigned meta_clash_mask = mdbx_meta_eq_mask(env); - if (meta_clash_mask) { - mdbx_error("meta-pages are clashed: mask 0x%d", meta_clash_mask); - return MDBX_WANNA_RECOVERY; - } - - while (1) { - MDBX_meta *head = mdbx_meta_head(env); - const txnid_t head_txnid = mdbx_meta_txnid_fluid(env, head); - if (head_txnid == meta.mm_txnid_a) - break; - - if (lck_rc == /* lck exclusive */ MDBX_RESULT_TRUE) { - assert(META_IS_STEADY(&meta) && !META_IS_STEADY(head)); - if (env->me_flags & MDBX_RDONLY) { - mdbx_error("rollback needed: (from head %" PRIaTXN - " to steady %" PRIaTXN "), but unable in read-only mode", - head_txnid, meta.mm_txnid_a); - return MDBX_WANNA_RECOVERY /* LY: could not recovery/rollback */; - } - - const MDBX_meta *const meta0 = METAPAGE(env, 0); - const MDBX_meta *const meta1 = METAPAGE(env, 1); - const MDBX_meta *const meta2 = METAPAGE(env, 2); - txnid_t undo_txnid = 0; - while ( - (head != meta0 && mdbx_meta_txnid_fluid(env, meta0) == undo_txnid) || - (head != meta1 && mdbx_meta_txnid_fluid(env, meta1) == undo_txnid) || - (head != meta2 && mdbx_meta_txnid_fluid(env, meta2) == undo_txnid)) - undo_txnid += 1; - if (unlikely(undo_txnid >= meta.mm_txnid_a)) { - mdbx_fatal("rollback failed: no suitable txnid (0,1,2) < %" PRIaTXN, - meta.mm_txnid_a); - return MDBX_PANIC /* LY: could not recovery/rollback */; - } - - /* LY: rollback weak checkpoint */ - mdbx_trace("rollback: from %" PRIaTXN ", to %" PRIaTXN " as %" PRIaTXN, - head_txnid, meta.mm_txnid_a, undo_txnid); - mdbx_ensure(env, head_txnid == mdbx_meta_txnid_stable(env, head)); - - if (env->me_flags & MDBX_WRITEMAP) { - head->mm_txnid_a = undo_txnid; - head->mm_datasync_sign = MDBX_DATASIGN_WEAK; - head->mm_txnid_b = undo_txnid; - const size_t offset = - ((uint8_t *)container_of(head, MDBX_page, mp_meta)) - - env->me_dxb_mmap.dxb; - const size_t paged_offset = offset & ~(env->me_os_psize - 1); - const size_t paged_length = mdbx_roundup2( - env->me_psize + offset - paged_offset, env->me_os_psize); - err = mdbx_msync(&env->me_dxb_mmap, paged_offset, paged_length, false); - } else { - MDBX_meta rollback = *head; - mdbx_meta_set_txnid(env, &rollback, undo_txnid); - rollback.mm_datasync_sign = MDBX_DATASIGN_WEAK; - err = mdbx_pwrite(env->me_fd, &rollback, sizeof(MDBX_meta), - (uint8_t *)head - (uint8_t *)env->me_map); - } - if (err) - return err; - - mdbx_invalidate_cache(env->me_map, pgno2bytes(env, NUM_METAS)); - mdbx_ensure(env, undo_txnid == mdbx_meta_txnid_fluid(env, head)); - mdbx_ensure(env, 0 == mdbx_meta_eq_mask(env)); - continue; - } - - if (!env->me_lck) { - /* LY: without-lck (read-only) mode, so it is imposible that other - * process made weak checkpoint. */ - mdbx_error("without-lck, unable recovery/rollback"); - return MDBX_WANNA_RECOVERY; - } - - /* LY: assume just have a collision with other running process, - * or someone make a weak checkpoint */ - mdbx_info("assume collision or online weak checkpoint"); - break; - } - - const MDBX_meta *head = mdbx_meta_head(env); - if (lck_rc == /* lck exclusive */ MDBX_RESULT_TRUE) { - /* re-check file size after mmap */ - uint64_t filesize_after_mmap; - err = mdbx_filesize(env->me_fd, &filesize_after_mmap); - if (unlikely(err != MDBX_SUCCESS)) - return err; - if (filesize_after_mmap != expected_bytes) { - if (filesize_after_mmap != filesize_before_mmap) - mdbx_info("datafile resized by system to %" PRIu64 " bytes", - filesize_after_mmap); - if (filesize_after_mmap % env->me_os_psize || - filesize_after_mmap > env->me_dbgeo.upper || - filesize_after_mmap < used_bytes) { - mdbx_info("unacceptable/unexpected datafile size %" PRIu64, - filesize_after_mmap); - return MDBX_PROBLEM; - } - if ((env->me_flags & MDBX_RDONLY) == 0) { - meta.mm_geo.now = - bytes2pgno(env, env->me_dbgeo.now = (size_t)filesize_after_mmap); - mdbx_info("update meta-geo to filesize %" PRIuPTR " bytes, %" PRIaPGNO - " pages", - env->me_dbgeo.now, meta.mm_geo.now); - } - } - - if (memcmp(&meta.mm_geo, &head->mm_geo, sizeof(meta.mm_geo))) { - const txnid_t txnid = mdbx_meta_txnid_stable(env, head); - mdbx_info("updating meta.geo: " - "from l%" PRIaPGNO "-n%" PRIaPGNO "-u%" PRIaPGNO - "/s%u-g%u (txn#%" PRIaTXN "), " - "to l%" PRIaPGNO "-n%" PRIaPGNO "-u%" PRIaPGNO - "/s%u-g%u (txn#%" PRIaTXN ")", - head->mm_geo.lower, head->mm_geo.now, head->mm_geo.upper, - head->mm_geo.shrink, head->mm_geo.grow, txnid, - meta.mm_geo.lower, meta.mm_geo.now, meta.mm_geo.upper, - meta.mm_geo.shrink, meta.mm_geo.grow, txnid + 1); - - mdbx_ensure(env, mdbx_meta_eq(env, &meta, head)); - mdbx_meta_set_txnid(env, &meta, txnid + 1); - env->me_sync_pending += env->me_psize; - err = mdbx_sync_locked(env, env->me_flags | MDBX_SHRINK_ALLOWED, &meta); - if (err) { - mdbx_info("error %d, while updating meta.geo: " - "from l%" PRIaPGNO "-n%" PRIaPGNO "-u%" PRIaPGNO - "/s%u-g%u (txn#%" PRIaTXN "), " - "to l%" PRIaPGNO "-n%" PRIaPGNO "-u%" PRIaPGNO - "/s%u-g%u (txn#%" PRIaTXN ")", - err, head->mm_geo.lower, head->mm_geo.now, head->mm_geo.upper, - head->mm_geo.shrink, head->mm_geo.grow, txnid, - meta.mm_geo.lower, meta.mm_geo.now, meta.mm_geo.upper, - meta.mm_geo.shrink, meta.mm_geo.grow, txnid + 1); - return err; - } - } - } - - return rc; -} - -/****************************************************************************/ - -/* Open and/or initialize the lock region for the environment. */ -static int __cold mdbx_setup_lck(MDBX_env *env, char *lck_pathname, - mode_t mode) { - assert(env->me_fd != INVALID_HANDLE_VALUE); - assert(env->me_lfd == INVALID_HANDLE_VALUE); - - const int open_flags = - (env->me_flags & MDBX_EXCLUSIVE) ? O_RDWR : O_RDWR | O_CREAT; - int err = mdbx_openfile(lck_pathname, open_flags, mode, &env->me_lfd, - (env->me_flags & MDBX_EXCLUSIVE) ? true : false); - if (err != MDBX_SUCCESS) { - if (!(err == MDBX_ENOFILE && (env->me_flags & MDBX_EXCLUSIVE)) && - !(err == MDBX_EROFS && (env->me_flags & MDBX_RDONLY))) - return err; - - /* LY: without-lck mode (e.g. exclusive or on read-only filesystem) */ - env->me_lfd = INVALID_HANDLE_VALUE; - const int rc = mdbx_lck_seize(env); - if (MDBX_IS_ERROR(rc)) - return rc; - - env->me_oldest = &env->me_oldest_stub; - env->me_maxreaders = UINT_MAX; -#ifdef MDBX_OSAL_LOCK - env->me_wmutex = &env->me_lckless_wmutex; -#endif - mdbx_debug("lck-setup:%s%s%s", " lck-less", - (env->me_flags & MDBX_RDONLY) ? " readonly" : "", - (rc == MDBX_RESULT_TRUE) ? " exclusive" : " cooperative"); - return rc; - } - - /* Try to get exclusive lock. If we succeed, then - * nobody is using the lock region and we should initialize it. */ - const int rc = mdbx_lck_seize(env); - if (MDBX_IS_ERROR(rc)) - return rc; - - mdbx_debug("lck-setup:%s%s%s", " with-lck", - (env->me_flags & MDBX_RDONLY) ? " readonly" : "", - (rc == MDBX_RESULT_TRUE) ? " exclusive" : " cooperative"); - - uint64_t size; - err = mdbx_filesize(env->me_lfd, &size); - if (unlikely(err != MDBX_SUCCESS)) - return err; - - if (rc == MDBX_RESULT_TRUE) { - uint64_t wanna = mdbx_roundup2( - (env->me_maxreaders - 1) * sizeof(MDBX_reader) + sizeof(MDBX_lockinfo), - env->me_os_psize); -#ifndef NDEBUG - err = mdbx_ftruncate(env->me_lfd, size = 0); - if (unlikely(err != MDBX_SUCCESS)) - return err; -#endif - mdbx_jitter4testing(false); - - if (size != wanna) { - err = mdbx_ftruncate(env->me_lfd, wanna); - if (unlikely(err != MDBX_SUCCESS)) - return err; - size = wanna; - } - } else { - if (env->me_flags & MDBX_EXCLUSIVE) - return MDBX_BUSY; - if (size > SSIZE_MAX || (size & (env->me_os_psize - 1)) || - size < env->me_os_psize) { - mdbx_notice("lck-file has invalid size %" PRIu64 " bytes", size); - return MDBX_PROBLEM; - } - } - - const size_t maxreaders = - ((size_t)size - sizeof(MDBX_lockinfo)) / sizeof(MDBX_reader) + 1; - if (maxreaders > UINT16_MAX) { - mdbx_error("lck-size too big (up to %" PRIuPTR " readers)", maxreaders); - return MDBX_PROBLEM; - } - env->me_maxreaders = (unsigned)maxreaders; - - err = mdbx_mmap((env->me_flags & MDBX_EXCLUSIVE) | MDBX_WRITEMAP, &env->me_lck_mmap, (size_t)size, (size_t)size); - if (unlikely(err != MDBX_SUCCESS)) - return err; - -#ifdef MADV_DODUMP - (void)madvise(env->me_lck, size, MADV_DODUMP); -#endif - -#ifdef MADV_DONTFORK - if (madvise(env->me_lck, size, MADV_DONTFORK) < 0) - return errno; -#endif - -#ifdef MADV_WILLNEED - if (madvise(env->me_lck, size, MADV_WILLNEED) < 0) - return errno; -#endif - -#ifdef MADV_RANDOM - if (madvise(env->me_lck, size, MADV_RANDOM) < 0) - return errno; -#endif - - if (rc == MDBX_RESULT_TRUE) { - /* LY: exlcusive mode, init lck */ - memset(env->me_lck, 0, (size_t)size); - err = mdbx_lck_init(env); - if (err) - return err; - - env->me_lck->mti_magic_and_version = MDBX_LOCK_MAGIC; - env->me_lck->mti_os_and_format = MDBX_LOCK_FORMAT; - } else { - if (env->me_lck->mti_magic_and_version != MDBX_LOCK_MAGIC && - env->me_lck->mti_magic_and_version != MDBX_LOCK_DEBUG) { - mdbx_error("lock region has invalid magic/version"); - return ((env->me_lck->mti_magic_and_version >> 8) != MDBX_MAGIC) - ? MDBX_INVALID - : MDBX_VERSION_MISMATCH; - } - if (env->me_lck->mti_os_and_format != MDBX_LOCK_FORMAT) { - mdbx_error("lock region has os/format 0x%" PRIx32 ", expected 0x%" PRIx32, - env->me_lck->mti_os_and_format, MDBX_LOCK_FORMAT); - return MDBX_VERSION_MISMATCH; - } - } - - mdbx_assert(env, !MDBX_IS_ERROR(rc)); - env->me_oldest = &env->me_lck->mti_oldest; -#ifdef MDBX_OSAL_LOCK - env->me_wmutex = &env->me_lck->mti_wmutex; -#endif - return rc; -} - -/* Only a subset of the mdbx_env flags can be changed - * at runtime. Changing other flags requires closing the - * environment and re-opening it with the new flags. */ -#define CHANGEABLE \ - (MDBX_NOSYNC | MDBX_NOMETASYNC | MDBX_MAPASYNC | MDBX_NOMEMINIT | \ - MDBX_COALESCE | MDBX_PAGEPERTURB) -#define CHANGELESS \ - (MDBX_NOSUBDIR | MDBX_RDONLY | MDBX_WRITEMAP | MDBX_NOTLS | MDBX_NORDAHEAD | \ - MDBX_LIFORECLAIM | MDBX_EXCLUSIVE) - -#if VALID_FLAGS & PERSISTENT_FLAGS & (CHANGEABLE | CHANGELESS) -#error "Persistent DB flags & env flags overlap, but both go in mm_flags" -#endif - -int __cold mdbx_env_open(MDBX_env *env, const char *path, unsigned flags, - mode_t mode) { - if (unlikely(!env || !path)) - return MDBX_EINVAL; - - if (unlikely(env->me_signature != MDBX_ME_SIGNATURE)) - return MDBX_EBADSIGN; - - if (flags & ~(CHANGEABLE | CHANGELESS)) - return MDBX_EINVAL; - - if (env->me_fd != INVALID_HANDLE_VALUE || - (env->me_flags & MDBX_ENV_ACTIVE) != 0) - return MDBX_EPERM; - - size_t len_full, len = strlen(path); - if (flags & MDBX_NOSUBDIR) { - len_full = len + sizeof(MDBX_LOCK_SUFFIX) + len + 1; - } else { - len_full = len + sizeof(MDBX_LOCKNAME) + len + sizeof(MDBX_DATANAME); - } - char *lck_pathname = malloc(len_full); - if (!lck_pathname) - return MDBX_ENOMEM; - - char *dxb_pathname; - if (flags & MDBX_NOSUBDIR) { - dxb_pathname = lck_pathname + len + sizeof(MDBX_LOCK_SUFFIX); - sprintf(lck_pathname, "%s" MDBX_LOCK_SUFFIX, path); - strcpy(dxb_pathname, path); - } else { - dxb_pathname = lck_pathname + len + sizeof(MDBX_LOCKNAME); - sprintf(lck_pathname, "%s" MDBX_LOCKNAME, path); - sprintf(dxb_pathname, "%s" MDBX_DATANAME, path); - } - - int rc = MDBX_SUCCESS; - flags |= env->me_flags; - if (flags & MDBX_RDONLY) { - /* LY: silently ignore irrelevant flags when - * we're only getting read access */ - flags &= ~(MDBX_WRITEMAP | MDBX_MAPASYNC | MDBX_NOSYNC | MDBX_NOMETASYNC | - MDBX_COALESCE | MDBX_LIFORECLAIM | MDBX_NOMEMINIT); - } else { - if (!((env->me_free_pgs = mdbx_pnl_alloc(MDBX_PNL_UM_MAX)) && - (env->me_dirtylist = calloc(MDBX_PNL_UM_SIZE, sizeof(MDBX_ID2))))) - rc = MDBX_ENOMEM; - } - - const uint32_t saved_me_flags = env->me_flags; - env->me_flags = (flags & ~MDBX_FATAL_ERROR) | MDBX_ENV_ACTIVE; - if (rc) - goto bailout; - - env->me_path = mdbx_strdup(path); - env->me_dbxs = calloc(env->me_maxdbs, sizeof(MDBX_dbx)); - env->me_dbflags = calloc(env->me_maxdbs, sizeof(env->me_dbflags[0])); - env->me_dbiseqs = calloc(env->me_maxdbs, sizeof(env->me_dbiseqs[0])); - if (!(env->me_dbxs && env->me_path && env->me_dbflags && env->me_dbiseqs)) { - rc = MDBX_ENOMEM; - goto bailout; - } - env->me_dbxs[FREE_DBI].md_cmp = mdbx_cmp_int_ai; /* aligned MDBX_INTEGERKEY */ - - int oflags; - if (F_ISSET(flags, MDBX_RDONLY)) - oflags = O_RDONLY; - else - oflags = O_RDWR | O_CREAT; - - rc = mdbx_openfile(dxb_pathname, oflags, mode, &env->me_fd, - (env->me_flags & MDBX_EXCLUSIVE) ? true : false); - if (rc != MDBX_SUCCESS) - goto bailout; - - const int lck_rc = mdbx_setup_lck(env, lck_pathname, mode); - if (MDBX_IS_ERROR(lck_rc)) { - rc = lck_rc; - goto bailout; - } - - const int dxb_rc = mdbx_setup_dxb(env, lck_rc); - if (MDBX_IS_ERROR(dxb_rc)) { - rc = dxb_rc; - goto bailout; - } - - mdbx_debug("opened dbenv %p", (void *)env); - if (env->me_lck) { - const unsigned mode_flags = - MDBX_WRITEMAP | MDBX_NOSYNC | MDBX_NOMETASYNC | MDBX_MAPASYNC; - if (lck_rc == MDBX_RESULT_TRUE) { - env->me_lck->mti_envmode = env->me_flags & (mode_flags | MDBX_RDONLY); - if ((env->me_flags & MDBX_EXCLUSIVE) == 0) { - /* LY: downgrade lock only if exclusive access not requested. - * in case exclusive==1, just leave value as is. */ - rc = mdbx_lck_downgrade(env, true); - mdbx_debug("lck-downgrade-full: rc %i ", rc); - } else { - rc = mdbx_lck_downgrade(env, false); - mdbx_debug("lck-downgrade-partial: rc %i ", rc); - } - if (rc != MDBX_SUCCESS) - goto bailout; - } else { - if ((env->me_flags & MDBX_RDONLY) == 0) { - while (env->me_lck->mti_envmode == MDBX_RDONLY) { - if (mdbx_atomic_compare_and_swap32(&env->me_lck->mti_envmode, - MDBX_RDONLY, - env->me_flags & mode_flags)) - break; - /* TODO: yield/relax cpu */ - } - if ((env->me_lck->mti_envmode ^ env->me_flags) & mode_flags) { - mdbx_error("current mode/flags incompatible with requested"); - rc = MDBX_INCOMPATIBLE; - goto bailout; - } - } - } - - if ((env->me_flags & MDBX_NOTLS) == 0) { - rc = mdbx_rthc_alloc(&env->me_txkey, &env->me_lck->mti_readers[0], - &env->me_lck->mti_readers[env->me_maxreaders]); - if (unlikely(rc != MDBX_SUCCESS)) - goto bailout; - env->me_flags |= MDBX_ENV_TXKEY; - } - } - - if ((flags & MDBX_RDONLY) == 0) { - MDBX_txn *txn; - int tsize = sizeof(MDBX_txn), - size = - tsize + env->me_maxdbs * (sizeof(MDBX_db) + sizeof(MDBX_cursor *) + - sizeof(unsigned) + 1); - if ((env->me_pbuf = calloc(1, env->me_psize)) && (txn = calloc(1, size))) { - txn->mt_dbs = (MDBX_db *)((char *)txn + tsize); - txn->mt_cursors = (MDBX_cursor **)(txn->mt_dbs + env->me_maxdbs); - txn->mt_dbiseqs = (unsigned *)(txn->mt_cursors + env->me_maxdbs); - txn->mt_dbflags = (uint8_t *)(txn->mt_dbiseqs + env->me_maxdbs); - txn->mt_env = env; - txn->mt_dbxs = env->me_dbxs; - txn->mt_flags = MDBX_TXN_FINISHED; - env->me_txn0 = txn; - } else { - rc = MDBX_ENOMEM; - } - } - -#if MDBX_DEBUG - if (rc == MDBX_SUCCESS) { - MDBX_meta *meta = mdbx_meta_head(env); - MDBX_db *db = &meta->mm_dbs[MAIN_DBI]; - - mdbx_debug("opened database version %u, pagesize %u", - (uint8_t)meta->mm_magic_and_version, env->me_psize); - mdbx_debug("using meta page %" PRIaPGNO ", txn %" PRIaTXN "", - container_of(meta, MDBX_page, mp_data)->mp_pgno, - mdbx_meta_txnid_fluid(env, meta)); - mdbx_debug("depth: %u", db->md_depth); - mdbx_debug("entries: %" PRIu64 "", db->md_entries); - mdbx_debug("branch pages: %" PRIaPGNO "", db->md_branch_pages); - mdbx_debug("leaf pages: %" PRIaPGNO "", db->md_leaf_pages); - mdbx_debug("overflow pages: %" PRIaPGNO "", db->md_overflow_pages); - mdbx_debug("root: %" PRIaPGNO "", db->md_root); - } -#endif - -bailout: - if (rc) { - mdbx_env_close0(env); - env->me_flags = saved_me_flags | MDBX_FATAL_ERROR; - } - free(lck_pathname); - return rc; -} - -/* Destroy resources from mdbx_env_open(), clear our readers & DBIs */ -static void __cold mdbx_env_close0(MDBX_env *env) { - if (!(env->me_flags & MDBX_ENV_ACTIVE)) - return; - env->me_flags &= ~MDBX_ENV_ACTIVE; - - /* Doing this here since me_dbxs may not exist during mdbx_env_close */ - if (env->me_dbxs) { - for (unsigned i = env->me_maxdbs; --i >= CORE_DBS;) - free(env->me_dbxs[i].md_name.iov_base); - free(env->me_dbxs); - } - - free(env->me_pbuf); - free(env->me_dbiseqs); - free(env->me_dbflags); - free(env->me_path); - free(env->me_dirtylist); - if (env->me_txn0) { - mdbx_txl_free(env->me_txn0->mt_lifo_reclaimed); - free(env->me_txn0); - } - mdbx_pnl_free(env->me_free_pgs); - - if (env->me_flags & MDBX_ENV_TXKEY) - mdbx_rthc_remove(env->me_txkey); - - if (env->me_map) { - mdbx_munmap(&env->me_dxb_mmap); -#ifdef USE_VALGRIND - VALGRIND_DISCARD(env->me_valgrind_handle); - env->me_valgrind_handle = -1; -#endif - } - if (env->me_fd != INVALID_HANDLE_VALUE) { - (void)mdbx_closefile(env->me_fd); - env->me_fd = INVALID_HANDLE_VALUE; - } - - if (env->me_lck) - mdbx_munmap(&env->me_lck_mmap); - env->me_oldest = nullptr; - - mdbx_lck_destroy(env); - if (env->me_lfd != INVALID_HANDLE_VALUE) { - (void)mdbx_closefile(env->me_lfd); - env->me_lfd = INVALID_HANDLE_VALUE; - } - env->me_flags = 0; -} - -int __cold mdbx_env_close_ex(MDBX_env *env, int dont_sync) { - MDBX_page *dp; - int rc = MDBX_SUCCESS; - - if (unlikely(!env)) - return MDBX_EINVAL; - if (unlikely(env->me_signature != MDBX_ME_SIGNATURE)) - return MDBX_EBADSIGN; - - if ((env->me_flags & (MDBX_RDONLY | MDBX_FATAL_ERROR)) == 0) { - if (env->me_txn0 && env->me_txn0->mt_owner && - env->me_txn0->mt_owner != mdbx_thread_self()) - return MDBX_BUSY; - if (!dont_sync) { -#if defined(_WIN32) || defined(_WIN64) - /* On windows, without blocking is impossible to determine whether another - * process is running a writing transaction or not. - * Because in the "owner died" condition kernel don't release - * file lock immediately. */ - rc = mdbx_env_sync_ex(env, true, false); -#else - rc = mdbx_env_sync_ex(env, true, true); - rc = (rc == MDBX_BUSY || rc == EAGAIN || rc == EACCES || rc == EBUSY || - rc == EWOULDBLOCK) - ? MDBX_SUCCESS - : rc; -#endif - } - } - - VALGRIND_DESTROY_MEMPOOL(env); - while ((dp = env->me_dpages) != NULL) { - ASAN_UNPOISON_MEMORY_REGION(&dp->mp_next, sizeof(dp->mp_next)); - VALGRIND_MAKE_MEM_DEFINED(&dp->mp_next, sizeof(dp->mp_next)); - env->me_dpages = dp->mp_next; - free(dp); - } - - mdbx_env_close0(env); - mdbx_ensure(env, mdbx_fastmutex_destroy(&env->me_dbi_lock) == MDBX_SUCCESS); -#if defined(_WIN32) || defined(_WIN64) - /* me_remap_guard don't have destructor (Slim Reader/Writer Lock) */ - DeleteCriticalSection(&env->me_windowsbug_lock); -#else - mdbx_ensure(env, - mdbx_fastmutex_destroy(&env->me_lckless_wmutex) == MDBX_SUCCESS); - mdbx_ensure(env, - mdbx_fastmutex_destroy(&env->me_remap_guard) == MDBX_SUCCESS); -#endif /* Windows */ - - env->me_pid = 0; - env->me_signature = 0; - free(env); - - return rc; -} - -int mdbx_env_close(MDBX_env *env) { return mdbx_env_close_ex(env, false); } - -/* Compare two items pointing at aligned unsigned int's. */ -static int __hot mdbx_cmp_int_ai(const MDBX_val *a, const MDBX_val *b) { - mdbx_assert(NULL, a->iov_len == b->iov_len); - mdbx_assert(NULL, 0 == (uintptr_t)a->iov_base % sizeof(int) && - 0 == (uintptr_t)b->iov_base % sizeof(int)); - switch (a->iov_len) { - case 4: - return mdbx_cmp2int(*(uint32_t *)a->iov_base, *(uint32_t *)b->iov_base); - case 8: - return mdbx_cmp2int(*(uint64_t *)a->iov_base, *(uint64_t *)b->iov_base); - default: - mdbx_assert_fail(NULL, "invalid size for INTEGERKEY/INTEGERDUP", mdbx_func_, - __LINE__); - return 0; - } -} - -/* Compare two items pointing at 2-byte aligned unsigned int's. */ -static int __hot mdbx_cmp_int_a2(const MDBX_val *a, const MDBX_val *b) { - mdbx_assert(NULL, a->iov_len == b->iov_len); - mdbx_assert(NULL, 0 == (uintptr_t)a->iov_base % sizeof(uint16_t) && - 0 == (uintptr_t)b->iov_base % sizeof(uint16_t)); -#if UNALIGNED_OK - switch (a->iov_len) { - case 4: - return mdbx_cmp2int(*(uint32_t *)a->iov_base, *(uint32_t *)b->iov_base); - case 8: - return mdbx_cmp2int(*(uint64_t *)a->iov_base, *(uint64_t *)b->iov_base); - default: - mdbx_assert_fail(NULL, "invalid size for INTEGERKEY/INTEGERDUP", mdbx_func_, - __LINE__); - return 0; - } -#else - mdbx_assert(NULL, 0 == a->iov_len % sizeof(uint16_t)); - { - int diff; - const uint16_t *pa, *pb, *end; - -#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ - end = (const uint16_t *)a->iov_base; - pa = (const uint16_t *)((char *)a->iov_base + a->iov_len); - pb = (const uint16_t *)((char *)b->iov_base + a->iov_len); - do { - diff = *--pa - *--pb; -#else /* __BYTE_ORDER__ */ - end = (const uint16_t *)((char *)a->iov_base + a->iov_len); - pa = (const uint16_t *)a->iov_base; - pb = (const uint16_t *)b->iov_base; - do { - diff = *pa++ - *pb++; -#endif /* __BYTE_ORDER__ */ - if (likely(diff != 0)) - break; - } while (pa != end); - return diff; - } -#endif /* UNALIGNED_OK */ -} - -/* Compare two items pointing at unsigneds of unknown alignment. - * - * This is also set as MDBX_INTEGERDUP|MDBX_DUPFIXED's MDBX_dbx.md_dcmp. */ -static int __hot mdbx_cmp_int_ua(const MDBX_val *a, const MDBX_val *b) { - mdbx_assert(NULL, a->iov_len == b->iov_len); -#if UNALIGNED_OK - switch (a->iov_len) { - case 4: - return mdbx_cmp2int(*(uint32_t *)a->iov_base, *(uint32_t *)b->iov_base); - case 8: - return mdbx_cmp2int(*(uint64_t *)a->iov_base, *(uint64_t *)b->iov_base); - default: - mdbx_assert_fail(NULL, "invalid size for INTEGERKEY/INTEGERDUP", mdbx_func_, - __LINE__); - return 0; - } -#else - mdbx_assert(NULL, a->iov_len == sizeof(int) || a->iov_len == sizeof(size_t)); -#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ - { - int diff; - const uint8_t *pa, *pb; - - pa = (const uint8_t *)a->iov_base + a->iov_len; - pb = (const uint8_t *)b->iov_base + a->iov_len; - - do { - diff = *--pa - *--pb; - if (likely(diff != 0)) - break; - } while (pa != a->iov_base); - return diff; - } -#else /* __BYTE_ORDER__ */ - return memcmp(a->iov_base, b->iov_base, a->iov_len); -#endif /* __BYTE_ORDER__ */ -#endif /* UNALIGNED_OK */ -} - -/* Compare two items lexically */ -static int __hot mdbx_cmp_memn(const MDBX_val *a, const MDBX_val *b) { -/* LY: assumes that length of keys are NOT equal for most cases, - * if no then branch-prediction should mitigate the problem */ -#if 0 - /* LY: without branch instructions on x86, - * but isn't best for equal length of keys */ - int diff_len = mdbx_cmp2int(a->iov_len, b->iov_len); -#else - /* LY: best when length of keys are equal, - * but got a branch-penalty otherwise */ - if (likely(a->iov_len == b->iov_len)) - return memcmp(a->iov_base, b->iov_base, a->iov_len); - int diff_len = (a->iov_len < b->iov_len) ? -1 : 1; -#endif - size_t shortest = (a->iov_len < b->iov_len) ? a->iov_len : b->iov_len; - int diff_data = memcmp(a->iov_base, b->iov_base, shortest); - return likely(diff_data) ? diff_data : diff_len; -} - -/* Compare two items in reverse byte order */ -static int __hot mdbx_cmp_memnr(const MDBX_val *a, const MDBX_val *b) { - const uint8_t *pa, *pb, *end; - - pa = (const uint8_t *)a->iov_base + a->iov_len; - pb = (const uint8_t *)b->iov_base + b->iov_len; - size_t minlen = (a->iov_len < b->iov_len) ? a->iov_len : b->iov_len; - end = pa - minlen; - - while (pa != end) { - int diff = *--pa - *--pb; - if (likely(diff)) - return diff; - } - return mdbx_cmp2int(a->iov_len, b->iov_len); -} - -/* Search for key within a page, using binary search. - * Returns the smallest entry larger or equal to the key. - * If exactp is non-null, stores whether the found entry was an exact match - * in *exactp (1 or 0). - * Updates the cursor index with the index of the found entry. - * If no entry larger or equal to the key is found, returns NULL. */ -static MDBX_node *__hot mdbx_node_search(MDBX_cursor *mc, MDBX_val *key, - int *exactp) { - unsigned i = 0, nkeys; - int low, high; - int rc = 0; - MDBX_page *mp = mc->mc_pg[mc->mc_top]; - MDBX_node *node = NULL; - MDBX_val nodekey; - MDBX_cmp_func *cmp; - DKBUF; - - nkeys = NUMKEYS(mp); - - mdbx_debug("searching %u keys in %s %spage %" PRIaPGNO "", nkeys, - IS_LEAF(mp) ? "leaf" : "branch", IS_SUBP(mp) ? "sub-" : "", - mp->mp_pgno); - - low = IS_LEAF(mp) ? 0 : 1; - high = nkeys - 1; - cmp = mc->mc_dbx->md_cmp; - - /* Branch pages have no data, so if using integer keys, - * alignment is guaranteed. Use faster mdbx_cmp_int_ai. - */ - if (cmp == mdbx_cmp_int_a2 && IS_BRANCH(mp)) - cmp = mdbx_cmp_int_ai; - - if (IS_LEAF2(mp)) { - nodekey.iov_len = mc->mc_db->md_xsize; - node = NODEPTR(mp, 0); /* fake */ - while (low <= high) { - i = (low + high) >> 1; - nodekey.iov_base = LEAF2KEY(mp, i, nodekey.iov_len); - rc = cmp(key, &nodekey); - mdbx_debug("found leaf index %u [%s], rc = %i", i, DKEY(&nodekey), rc); - if (rc == 0) - break; - if (rc > 0) - low = i + 1; - else - high = i - 1; - } - } else { - while (low <= high) { - i = (low + high) >> 1; - - node = NODEPTR(mp, i); - nodekey.iov_len = NODEKSZ(node); - nodekey.iov_base = NODEKEY(node); - - rc = cmp(key, &nodekey); - if (IS_LEAF(mp)) - mdbx_debug("found leaf index %u [%s], rc = %i", i, DKEY(&nodekey), rc); - else - mdbx_debug("found branch index %u [%s -> %" PRIaPGNO "], rc = %i", i, - DKEY(&nodekey), NODEPGNO(node), rc); - if (rc == 0) - break; - if (rc > 0) - low = i + 1; - else - high = i - 1; - } - } - - if (rc > 0) /* Found entry is less than the key. */ - i++; /* Skip to get the smallest entry larger than key. */ - - if (exactp) - *exactp = (rc == 0 && nkeys > 0); - /* store the key index */ - mdbx_cassert(mc, i <= UINT16_MAX); - mc->mc_ki[mc->mc_top] = (indx_t)i; - if (i >= nkeys) - /* There is no entry larger or equal to the key. */ - return NULL; - - /* nodeptr is fake for LEAF2 */ - return IS_LEAF2(mp) ? node : NODEPTR(mp, i); -} - -#if 0 /* unused for now */ -static void mdbx_cursor_adjust(MDBX_cursor *mc, func) { - MDBX_cursor *m2; - - for (m2 = mc->mc_txn->mt_cursors[mc->mc_dbi]; m2; m2 = m2->mc_next) { - if (m2->mc_pg[m2->mc_top] == mc->mc_pg[mc->mc_top]) { - func(mc, m2); - } - } -} -#endif - -/* Pop a page off the top of the cursor's stack. */ -static void mdbx_cursor_pop(MDBX_cursor *mc) { - if (mc->mc_snum) { - mdbx_debug("popped page %" PRIaPGNO " off db %d cursor %p", - mc->mc_pg[mc->mc_top]->mp_pgno, DDBI(mc), (void *)mc); - - mc->mc_snum--; - if (mc->mc_snum) { - mc->mc_top--; - } else { - mc->mc_flags &= ~C_INITIALIZED; - } - } -} - -/* Push a page onto the top of the cursor's stack. - * Set MDBX_TXN_ERROR on failure. */ -static int mdbx_cursor_push(MDBX_cursor *mc, MDBX_page *mp) { - mdbx_debug("pushing page %" PRIaPGNO " on db %d cursor %p", mp->mp_pgno, - DDBI(mc), (void *)mc); - - if (unlikely(mc->mc_snum >= CURSOR_STACK)) { - mc->mc_txn->mt_flags |= MDBX_TXN_ERROR; - return MDBX_CURSOR_FULL; - } - - mdbx_cassert(mc, mc->mc_snum < UINT16_MAX); - mc->mc_top = mc->mc_snum++; - mc->mc_pg[mc->mc_top] = mp; - mc->mc_ki[mc->mc_top] = 0; - - return MDBX_SUCCESS; -} - -/* Find the address of the page corresponding to a given page number. - * Set MDBX_TXN_ERROR on failure. - * - * [in] mc the cursor accessing the page. - * [in] pgno the page number for the page to retrieve. - * [out] ret address of a pointer where the page's address will be - * stored. - * [out] lvl dirtylist inheritance level of found page. 1=current txn, - * 0=mapped page. - * - * Returns 0 on success, non-zero on failure. */ -static int mdbx_page_get(MDBX_cursor *mc, pgno_t pgno, MDBX_page **ret, - int *lvl) { - MDBX_txn *txn = mc->mc_txn; - MDBX_env *env = txn->mt_env; - MDBX_page *p = NULL; - int level; - - if (!(txn->mt_flags & (MDBX_TXN_RDONLY | MDBX_TXN_WRITEMAP))) { - MDBX_txn *tx2 = txn; - level = 1; - do { - MDBX_ID2L dl = tx2->mt_rw_dirtylist; - unsigned x; - /* Spilled pages were dirtied in this txn and flushed - * because the dirty list got full. Bring this page - * back in from the map (but don't unspill it here, - * leave that unless page_touch happens again). */ - if (tx2->mt_spill_pages) { - pgno_t pn = pgno << 1; - x = mdbx_pnl_search(tx2->mt_spill_pages, pn); - if (x <= tx2->mt_spill_pages[0] && tx2->mt_spill_pages[x] == pn) - goto mapped; - } - if (dl[0].mid) { - unsigned y = mdbx_mid2l_search(dl, pgno); - if (y <= dl[0].mid && dl[y].mid == pgno) { - p = dl[y].mptr; - goto done; - } - } - level++; - } while ((tx2 = tx2->mt_parent) != NULL); - } - - if (unlikely(pgno >= txn->mt_next_pgno)) { - mdbx_debug("page %" PRIaPGNO " not found", pgno); - txn->mt_flags |= MDBX_TXN_ERROR; - return MDBX_PAGE_NOTFOUND; - } - level = 0; - -mapped: - p = pgno2page(env, pgno); - /* TODO: check p->mp_validator here */ - -done: - *ret = p; - if (lvl) - *lvl = level; - return MDBX_SUCCESS; -} - -/* Finish mdbx_page_search() / mdbx_page_search_lowest(). - * The cursor is at the root page, set up the rest of it. */ -static int mdbx_page_search_root(MDBX_cursor *mc, MDBX_val *key, int flags) { - MDBX_page *mp = mc->mc_pg[mc->mc_top]; - int rc; - DKBUF; - - while (IS_BRANCH(mp)) { - MDBX_node *node; - indx_t i; - - mdbx_debug("branch page %" PRIaPGNO " has %u keys", mp->mp_pgno, - NUMKEYS(mp)); - /* Don't assert on branch pages in the FreeDB. We can get here - * while in the process of rebalancing a FreeDB branch page; we must - * let that proceed. ITS#8336 */ - mdbx_cassert(mc, !mc->mc_dbi || NUMKEYS(mp) > 1); - mdbx_debug("found index 0 to page %" PRIaPGNO "", NODEPGNO(NODEPTR(mp, 0))); - - if (flags & (MDBX_PS_FIRST | MDBX_PS_LAST)) { - i = 0; - if (flags & MDBX_PS_LAST) { - i = NUMKEYS(mp) - 1; - /* if already init'd, see if we're already in right place */ - if (mc->mc_flags & C_INITIALIZED) { - if (mc->mc_ki[mc->mc_top] == i) { - mc->mc_top = mc->mc_snum++; - mp = mc->mc_pg[mc->mc_top]; - goto ready; - } - } - } - } else { - int exact; - node = mdbx_node_search(mc, key, &exact); - if (node == NULL) - i = NUMKEYS(mp) - 1; - else { - i = mc->mc_ki[mc->mc_top]; - if (!exact) { - mdbx_cassert(mc, i > 0); - i--; - } - } - mdbx_debug("following index %u for key [%s]", i, DKEY(key)); - } - - mdbx_cassert(mc, i < NUMKEYS(mp)); - node = NODEPTR(mp, i); - - if (unlikely((rc = mdbx_page_get(mc, NODEPGNO(node), &mp, NULL)) != 0)) - return rc; - - mc->mc_ki[mc->mc_top] = i; - if (unlikely(rc = mdbx_cursor_push(mc, mp))) - return rc; - - ready: - if (flags & MDBX_PS_MODIFY) { - if (unlikely((rc = mdbx_page_touch(mc)) != 0)) - return rc; - mp = mc->mc_pg[mc->mc_top]; - } - } - - if (unlikely(!IS_LEAF(mp))) { - mdbx_debug("internal error, index points to a page with 0x%02x flags!?", - mp->mp_flags); - mc->mc_txn->mt_flags |= MDBX_TXN_ERROR; - return MDBX_CORRUPTED; - } - - mdbx_debug("found leaf page %" PRIaPGNO " for key [%s]", mp->mp_pgno, - DKEY(key)); - mc->mc_flags |= C_INITIALIZED; - mc->mc_flags &= ~C_EOF; - - return MDBX_SUCCESS; -} - -/* Search for the lowest key under the current branch page. - * This just bypasses a NUMKEYS check in the current page - * before calling mdbx_page_search_root(), because the callers - * are all in situations where the current page is known to - * be underfilled. */ -static int mdbx_page_search_lowest(MDBX_cursor *mc) { - MDBX_page *mp = mc->mc_pg[mc->mc_top]; - MDBX_node *node = NODEPTR(mp, 0); - int rc; - - if (unlikely((rc = mdbx_page_get(mc, NODEPGNO(node), &mp, NULL)) != 0)) - return rc; - - mc->mc_ki[mc->mc_top] = 0; - if (unlikely(rc = mdbx_cursor_push(mc, mp))) - return rc; - return mdbx_page_search_root(mc, NULL, MDBX_PS_FIRST); -} - -/* Search for the page a given key should be in. - * Push it and its parent pages on the cursor stack. - * - * [in,out] mc the cursor for this operation. - * [in] key the key to search for, or NULL for first/last page. - * [in] flags If MDBX_PS_MODIFY is set, visited pages in the DB - * are touched (updated with new page numbers). - * If MDBX_PS_FIRST or MDBX_PS_LAST is set, find first or last - * leaf. - * This is used by mdbx_cursor_first() and mdbx_cursor_last(). - * If MDBX_PS_ROOTONLY set, just fetch root node, no further - * lookups. - * - * Returns 0 on success, non-zero on failure. */ -static int mdbx_page_search(MDBX_cursor *mc, MDBX_val *key, int flags) { - int rc; - pgno_t root; - - /* Make sure the txn is still viable, then find the root from - * the txn's db table and set it as the root of the cursor's stack. */ - if (unlikely(mc->mc_txn->mt_flags & MDBX_TXN_BLOCKED)) { - mdbx_debug("transaction has failed, must abort"); - return MDBX_BAD_TXN; - } - - mdbx_cassert(mc, mc->mc_txn->mt_txnid >= mc->mc_txn->mt_env->me_oldest[0]); - /* Make sure we're using an up-to-date root */ - if (unlikely(*mc->mc_dbflag & DB_STALE)) { - MDBX_cursor mc2; - if (unlikely(TXN_DBI_CHANGED(mc->mc_txn, mc->mc_dbi))) - return MDBX_BAD_DBI; - rc = mdbx_cursor_init(&mc2, mc->mc_txn, MAIN_DBI, NULL); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - rc = mdbx_page_search(&mc2, &mc->mc_dbx->md_name, 0); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - { - MDBX_val data; - int exact = 0; - MDBX_node *leaf = mdbx_node_search(&mc2, &mc->mc_dbx->md_name, &exact); - if (!exact) - return MDBX_NOTFOUND; - if (unlikely((leaf->mn_flags & (F_DUPDATA | F_SUBDATA)) != F_SUBDATA)) - return MDBX_INCOMPATIBLE; /* not a named DB */ - rc = mdbx_node_read(&mc2, leaf, &data); - if (rc) - return rc; - - uint16_t md_flags; - memcpy(&md_flags, ((char *)data.iov_base + offsetof(MDBX_db, md_flags)), - sizeof(uint16_t)); - /* The txn may not know this DBI, or another process may - * have dropped and recreated the DB with other flags. */ - if (unlikely((mc->mc_db->md_flags & PERSISTENT_FLAGS) != md_flags)) - return MDBX_INCOMPATIBLE; - memcpy(mc->mc_db, data.iov_base, sizeof(MDBX_db)); - } - *mc->mc_dbflag &= ~DB_STALE; - } - root = mc->mc_db->md_root; - - if (unlikely(root == P_INVALID)) { /* Tree is empty. */ - mdbx_debug("tree is empty"); - return MDBX_NOTFOUND; - } - - mdbx_cassert(mc, mc->mc_txn->mt_txnid >= mc->mc_txn->mt_env->me_oldest[0]); - mdbx_cassert(mc, root >= NUM_METAS); - if (!mc->mc_pg[0] || mc->mc_pg[0]->mp_pgno != root) - if (unlikely((rc = mdbx_page_get(mc, root, &mc->mc_pg[0], NULL)) != 0)) - return rc; - - mc->mc_snum = 1; - mc->mc_top = 0; - - mdbx_debug("db %d root page %" PRIaPGNO " has flags 0x%X", DDBI(mc), root, - mc->mc_pg[0]->mp_flags); - - if (flags & MDBX_PS_MODIFY) { - if (unlikely(rc = mdbx_page_touch(mc))) - return rc; - } - - if (flags & MDBX_PS_ROOTONLY) - return MDBX_SUCCESS; - - return mdbx_page_search_root(mc, key, flags); -} - -static int mdbx_ovpage_free(MDBX_cursor *mc, MDBX_page *mp) { - MDBX_txn *txn = mc->mc_txn; - pgno_t pg = mp->mp_pgno; - unsigned x = 0, ovpages = mp->mp_pages; - MDBX_env *env = txn->mt_env; - MDBX_PNL sl = txn->mt_spill_pages; - pgno_t pn = pg << 1; - int rc; - - mdbx_debug("free ov page %" PRIaPGNO " (%u)", pg, ovpages); - /* If the page is dirty or on the spill list we just acquired it, - * so we should give it back to our current free list, if any. - * Otherwise put it onto the list of pages we freed in this txn. - * - * Won't create me_reclaimed_pglist: me_last_reclaimed must be inited along - * with it. - * Unsupported in nested txns: They would need to hide the page - * range in ancestor txns' dirty and spilled lists. */ - if (env->me_reclaimed_pglist && !txn->mt_parent && - ((mp->mp_flags & P_DIRTY) || - (sl && (x = mdbx_pnl_search(sl, pn)) <= sl[0] && sl[x] == pn))) { - unsigned i, j; - pgno_t *mop; - MDBX_ID2 *dl, ix, iy; - rc = mdbx_pnl_need(&env->me_reclaimed_pglist, ovpages); - if (unlikely(rc)) - return rc; - if (!(mp->mp_flags & P_DIRTY)) { - /* This page is no longer spilled */ - if (x == sl[0]) - sl[0]--; - else - sl[x] |= 1; - goto release; - } - /* Remove from dirty list */ - dl = txn->mt_rw_dirtylist; - x = dl[0].mid--; - for (ix = dl[x]; ix.mptr != mp; ix = iy) { - if (likely(x > 1)) { - x--; - iy = dl[x]; - dl[x] = ix; - } else { - mdbx_cassert(mc, x > 1); - mdbx_error("not found page 0x%p #%" PRIaPGNO " in the dirtylist", mp, - mp->mp_pgno); - j = ++(dl[0].mid); - dl[j] = ix; /* Unsorted. OK when MDBX_TXN_ERROR. */ - txn->mt_flags |= MDBX_TXN_ERROR; - return MDBX_PROBLEM; - } - } - txn->mt_dirtyroom++; - if (!(env->me_flags & MDBX_WRITEMAP)) - mdbx_dpage_free(env, mp); - release: - /* Insert in me_reclaimed_pglist */ - mop = env->me_reclaimed_pglist; - j = mop[0] + ovpages; - for (i = mop[0]; i && mop[i] < pg; i--) - mop[j--] = mop[i]; - while (j > i) - mop[j--] = pg++; - mop[0] += ovpages; - } else { - rc = mdbx_pnl_append_range(&txn->mt_befree_pages, pg, ovpages); - if (unlikely(rc)) - return rc; - } - mc->mc_db->md_overflow_pages -= ovpages; - return 0; -} - -/* Return the data associated with a given node. - * - * [in] mc The cursor for this operation. - * [in] leaf The node being read. - * [out] data Updated to point to the node's data. - * - * Returns 0 on success, non-zero on failure. */ -static __inline int mdbx_node_read(MDBX_cursor *mc, MDBX_node *leaf, - MDBX_val *data) { - MDBX_page *omp; /* overflow page */ - pgno_t pgno; - int rc; - - mdbx_cassert(mc, mc->mc_txn->mt_txnid >= mc->mc_txn->mt_env->me_oldest[0]); - if (!F_ISSET(leaf->mn_flags, F_BIGDATA)) { - data->iov_len = NODEDSZ(leaf); - data->iov_base = NODEDATA(leaf); - return MDBX_SUCCESS; - } - - /* Read overflow data. */ - data->iov_len = NODEDSZ(leaf); - memcpy(&pgno, NODEDATA(leaf), sizeof(pgno)); - if (unlikely((rc = mdbx_page_get(mc, pgno, &omp, NULL)) != 0)) { - mdbx_debug("read overflow page %" PRIaPGNO " failed", pgno); - return rc; - } - data->iov_base = PAGEDATA(omp); - - return MDBX_SUCCESS; -} - -int mdbx_get(MDBX_txn *txn, MDBX_dbi dbi, MDBX_val *key, MDBX_val *data) { - MDBX_cursor mc; - MDBX_xcursor mx; - int exact = 0; - DKBUF; - - mdbx_debug("===> get db %u key [%s]", dbi, DKEY(key)); - - if (unlikely(!key || !data || !txn)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - if (unlikely(!TXN_DBI_EXIST(txn, dbi, DB_USRVALID))) - return MDBX_EINVAL; - - if (unlikely(txn->mt_flags & MDBX_TXN_BLOCKED)) - return MDBX_BAD_TXN; - - int rc = mdbx_cursor_init(&mc, txn, dbi, &mx); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - return mdbx_cursor_set(&mc, key, data, MDBX_SET, &exact); -} - -/* Find a sibling for a page. - * Replaces the page at the top of the cursor's stack with the specified - * sibling, if one exists. - * - * [in] mc The cursor for this operation. - * [in] move_right Non-zero if the right sibling is requested, - * otherwise the left sibling. - * - * Returns 0 on success, non-zero on failure. */ -static int mdbx_cursor_sibling(MDBX_cursor *mc, int move_right) { - int rc; - MDBX_node *indx; - MDBX_page *mp; - - mdbx_cassert(mc, mc->mc_txn->mt_txnid >= mc->mc_txn->mt_env->me_oldest[0]); - if (unlikely(mc->mc_snum < 2)) { - return MDBX_NOTFOUND; /* root has no siblings */ - } - - mdbx_cursor_pop(mc); - mdbx_debug("parent page is page %" PRIaPGNO ", index %u", - mc->mc_pg[mc->mc_top]->mp_pgno, mc->mc_ki[mc->mc_top]); - - if (move_right - ? (mc->mc_ki[mc->mc_top] + 1u >= NUMKEYS(mc->mc_pg[mc->mc_top])) - : (mc->mc_ki[mc->mc_top] == 0)) { - mdbx_debug("no more keys left, moving to %s sibling", - move_right ? "right" : "left"); - if (unlikely((rc = mdbx_cursor_sibling(mc, move_right)) != MDBX_SUCCESS)) { - /* undo cursor_pop before returning */ - mc->mc_top++; - mc->mc_snum++; - return rc; - } - } else { - if (move_right) - mc->mc_ki[mc->mc_top]++; - else - mc->mc_ki[mc->mc_top]--; - mdbx_debug("just moving to %s index key %u", move_right ? "right" : "left", - mc->mc_ki[mc->mc_top]); - } - mdbx_cassert(mc, IS_BRANCH(mc->mc_pg[mc->mc_top])); - - indx = NODEPTR(mc->mc_pg[mc->mc_top], mc->mc_ki[mc->mc_top]); - if (unlikely((rc = mdbx_page_get(mc, NODEPGNO(indx), &mp, NULL)) != 0)) { - /* mc will be inconsistent if caller does mc_snum++ as above */ - mc->mc_flags &= ~(C_INITIALIZED | C_EOF); - return rc; - } - - rc = mdbx_cursor_push(mc, mp); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - if (!move_right) - mc->mc_ki[mc->mc_top] = NUMKEYS(mp) - 1; - - return MDBX_SUCCESS; -} - -/* Move the cursor to the next data item. */ -static int mdbx_cursor_next(MDBX_cursor *mc, MDBX_val *key, MDBX_val *data, - MDBX_cursor_op op) { - MDBX_page *mp; - MDBX_node *leaf; - int rc; - - if ((mc->mc_flags & C_DEL) && op == MDBX_NEXT_DUP) - return MDBX_NOTFOUND; - - if (!(mc->mc_flags & C_INITIALIZED)) - return mdbx_cursor_first(mc, key, data); - - mp = mc->mc_pg[mc->mc_top]; - if (mc->mc_flags & C_EOF) { - if (mc->mc_ki[mc->mc_top] + 1u >= NUMKEYS(mp)) - return MDBX_NOTFOUND; - mc->mc_flags ^= C_EOF; - } - - if (mc->mc_db->md_flags & MDBX_DUPSORT) { - leaf = NODEPTR(mp, mc->mc_ki[mc->mc_top]); - if (F_ISSET(leaf->mn_flags, F_DUPDATA)) { - if (op == MDBX_NEXT || op == MDBX_NEXT_DUP) { - rc = - mdbx_cursor_next(&mc->mc_xcursor->mx_cursor, data, NULL, MDBX_NEXT); - if (op != MDBX_NEXT || rc != MDBX_NOTFOUND) { - if (likely(rc == MDBX_SUCCESS)) - MDBX_GET_KEY(leaf, key); - return rc; - } - } - } else { - mc->mc_xcursor->mx_cursor.mc_flags &= ~(C_INITIALIZED | C_EOF); - if (op == MDBX_NEXT_DUP) - return MDBX_NOTFOUND; - } - } - - mdbx_debug("cursor_next: top page is %" PRIaPGNO " in cursor %p", mp->mp_pgno, - (void *)mc); - if (mc->mc_flags & C_DEL) { - mc->mc_flags ^= C_DEL; - goto skip; - } - - if (mc->mc_ki[mc->mc_top] + 1u >= NUMKEYS(mp)) { - mdbx_debug("=====> move to next sibling page"); - if (unlikely((rc = mdbx_cursor_sibling(mc, 1)) != MDBX_SUCCESS)) { - mc->mc_flags |= C_EOF; - return rc; - } - mp = mc->mc_pg[mc->mc_top]; - mdbx_debug("next page is %" PRIaPGNO ", key index %u", mp->mp_pgno, - mc->mc_ki[mc->mc_top]); - } else - mc->mc_ki[mc->mc_top]++; - -skip: - mdbx_debug("==> cursor points to page %" PRIaPGNO - " with %u keys, key index %u", - mp->mp_pgno, NUMKEYS(mp), mc->mc_ki[mc->mc_top]); - - if (IS_LEAF2(mp)) { - key->iov_len = mc->mc_db->md_xsize; - key->iov_base = LEAF2KEY(mp, mc->mc_ki[mc->mc_top], key->iov_len); - return MDBX_SUCCESS; - } - - mdbx_cassert(mc, IS_LEAF(mp)); - leaf = NODEPTR(mp, mc->mc_ki[mc->mc_top]); - - if (F_ISSET(leaf->mn_flags, F_DUPDATA)) { - rc = mdbx_xcursor_init1(mc, leaf); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - } - if (data) { - if (unlikely((rc = mdbx_node_read(mc, leaf, data)) != MDBX_SUCCESS)) - return rc; - - if (F_ISSET(leaf->mn_flags, F_DUPDATA)) { - rc = mdbx_cursor_first(&mc->mc_xcursor->mx_cursor, data, NULL); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - } - } - - MDBX_GET_KEY(leaf, key); - return MDBX_SUCCESS; -} - -/* Move the cursor to the previous data item. */ -static int mdbx_cursor_prev(MDBX_cursor *mc, MDBX_val *key, MDBX_val *data, - MDBX_cursor_op op) { - MDBX_page *mp; - MDBX_node *leaf; - int rc; - - if ((mc->mc_flags & C_DEL) && op == MDBX_PREV_DUP) - return MDBX_NOTFOUND; - - if (!(mc->mc_flags & C_INITIALIZED)) { - rc = mdbx_cursor_last(mc, key, data); - if (unlikely(rc)) - return rc; - mc->mc_ki[mc->mc_top]++; - } - - mp = mc->mc_pg[mc->mc_top]; - if ((mc->mc_db->md_flags & MDBX_DUPSORT) && - mc->mc_ki[mc->mc_top] < NUMKEYS(mp)) { - leaf = NODEPTR(mp, mc->mc_ki[mc->mc_top]); - if (F_ISSET(leaf->mn_flags, F_DUPDATA)) { - if (op == MDBX_PREV || op == MDBX_PREV_DUP) { - rc = - mdbx_cursor_prev(&mc->mc_xcursor->mx_cursor, data, NULL, MDBX_PREV); - if (op != MDBX_PREV || rc != MDBX_NOTFOUND) { - if (likely(rc == MDBX_SUCCESS)) { - MDBX_GET_KEY(leaf, key); - mc->mc_flags &= ~C_EOF; - } - return rc; - } - } - } else { - mc->mc_xcursor->mx_cursor.mc_flags &= ~(C_INITIALIZED | C_EOF); - if (op == MDBX_PREV_DUP) - return MDBX_NOTFOUND; - } - } - - mdbx_debug("cursor_prev: top page is %" PRIaPGNO " in cursor %p", mp->mp_pgno, - (void *)mc); - - mc->mc_flags &= ~(C_EOF | C_DEL); - - if (mc->mc_ki[mc->mc_top] == 0) { - mdbx_debug("=====> move to prev sibling page"); - if ((rc = mdbx_cursor_sibling(mc, 0)) != MDBX_SUCCESS) { - return rc; - } - mp = mc->mc_pg[mc->mc_top]; - mc->mc_ki[mc->mc_top] = NUMKEYS(mp) - 1; - mdbx_debug("prev page is %" PRIaPGNO ", key index %u", mp->mp_pgno, - mc->mc_ki[mc->mc_top]); - } else - mc->mc_ki[mc->mc_top]--; - - mdbx_debug("==> cursor points to page %" PRIaPGNO - " with %u keys, key index %u", - mp->mp_pgno, NUMKEYS(mp), mc->mc_ki[mc->mc_top]); - - if (IS_LEAF2(mp)) { - key->iov_len = mc->mc_db->md_xsize; - key->iov_base = LEAF2KEY(mp, mc->mc_ki[mc->mc_top], key->iov_len); - return MDBX_SUCCESS; - } - - mdbx_cassert(mc, IS_LEAF(mp)); - leaf = NODEPTR(mp, mc->mc_ki[mc->mc_top]); - - if (F_ISSET(leaf->mn_flags, F_DUPDATA)) { - rc = mdbx_xcursor_init1(mc, leaf); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - } - if (data) { - if (unlikely((rc = mdbx_node_read(mc, leaf, data)) != MDBX_SUCCESS)) - return rc; - - if (F_ISSET(leaf->mn_flags, F_DUPDATA)) { - rc = mdbx_cursor_last(&mc->mc_xcursor->mx_cursor, data, NULL); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - } - } - - MDBX_GET_KEY(leaf, key); - return MDBX_SUCCESS; -} - -/* Set the cursor on a specific data item. */ -static int mdbx_cursor_set(MDBX_cursor *mc, MDBX_val *key, MDBX_val *data, - MDBX_cursor_op op, int *exactp) { - int rc; - MDBX_page *mp; - MDBX_node *leaf = NULL; - DKBUF; - - mdbx_cassert(mc, mc->mc_txn->mt_txnid >= mc->mc_txn->mt_env->me_oldest[0]); - if ((mc->mc_db->md_flags & MDBX_INTEGERKEY) && - unlikely(key->iov_len != sizeof(uint32_t) && - key->iov_len != sizeof(uint64_t))) { - mdbx_cassert(mc, !"key-size is invalid for MDBX_INTEGERKEY"); - return MDBX_BAD_VALSIZE; - } - - if (mc->mc_xcursor) - mc->mc_xcursor->mx_cursor.mc_flags &= ~(C_INITIALIZED | C_EOF); - - /* See if we're already on the right page */ - if (mc->mc_flags & C_INITIALIZED) { - MDBX_val nodekey; - - mp = mc->mc_pg[mc->mc_top]; - if (!NUMKEYS(mp)) { - mc->mc_ki[mc->mc_top] = 0; - return MDBX_NOTFOUND; - } - if (mp->mp_flags & P_LEAF2) { - nodekey.iov_len = mc->mc_db->md_xsize; - nodekey.iov_base = LEAF2KEY(mp, 0, nodekey.iov_len); - } else { - leaf = NODEPTR(mp, 0); - MDBX_GET_KEY2(leaf, nodekey); - } - rc = mc->mc_dbx->md_cmp(key, &nodekey); - if (rc == 0) { - /* Probably happens rarely, but first node on the page - * was the one we wanted. - */ - mc->mc_ki[mc->mc_top] = 0; - if (exactp) - *exactp = 1; - goto set1; - } - if (rc > 0) { - unsigned i; - unsigned nkeys = NUMKEYS(mp); - if (nkeys > 1) { - if (mp->mp_flags & P_LEAF2) { - nodekey.iov_base = LEAF2KEY(mp, nkeys - 1, nodekey.iov_len); - } else { - leaf = NODEPTR(mp, nkeys - 1); - MDBX_GET_KEY2(leaf, nodekey); - } - rc = mc->mc_dbx->md_cmp(key, &nodekey); - if (rc == 0) { - /* last node was the one we wanted */ - mdbx_cassert(mc, nkeys >= 1 && nkeys <= UINT16_MAX + 1); - mc->mc_ki[mc->mc_top] = (indx_t)(nkeys - 1); - if (exactp) - *exactp = 1; - goto set1; - } - if (rc < 0) { - if (mc->mc_ki[mc->mc_top] < NUMKEYS(mp)) { - /* This is definitely the right page, skip search_page */ - if (mp->mp_flags & P_LEAF2) { - nodekey.iov_base = - LEAF2KEY(mp, mc->mc_ki[mc->mc_top], nodekey.iov_len); - } else { - leaf = NODEPTR(mp, mc->mc_ki[mc->mc_top]); - MDBX_GET_KEY2(leaf, nodekey); - } - rc = mc->mc_dbx->md_cmp(key, &nodekey); - if (rc == 0) { - /* current node was the one we wanted */ - if (exactp) - *exactp = 1; - goto set1; - } - } - rc = 0; - mc->mc_flags &= ~C_EOF; - goto set2; - } - } - /* If any parents have right-sibs, search. - * Otherwise, there's nothing further. */ - for (i = 0; i < mc->mc_top; i++) - if (mc->mc_ki[i] < NUMKEYS(mc->mc_pg[i]) - 1) - break; - if (i == mc->mc_top) { - /* There are no other pages */ - mdbx_cassert(mc, nkeys <= UINT16_MAX); - mc->mc_ki[mc->mc_top] = (uint16_t)nkeys; - return MDBX_NOTFOUND; - } - } - if (!mc->mc_top) { - /* There are no other pages */ - mc->mc_ki[mc->mc_top] = 0; - if (op == MDBX_SET_RANGE && !exactp) { - rc = 0; - goto set1; - } else - return MDBX_NOTFOUND; - } - } else { - mc->mc_pg[0] = 0; - } - - rc = mdbx_page_search(mc, key, 0); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - - mp = mc->mc_pg[mc->mc_top]; - mdbx_cassert(mc, IS_LEAF(mp)); - -set2: - leaf = mdbx_node_search(mc, key, exactp); - if (exactp != NULL && !*exactp) { - /* MDBX_SET specified and not an exact match. */ - return MDBX_NOTFOUND; - } - - if (leaf == NULL) { - mdbx_debug("===> inexact leaf not found, goto sibling"); - if (unlikely((rc = mdbx_cursor_sibling(mc, 1)) != MDBX_SUCCESS)) { - mc->mc_flags |= C_EOF; - return rc; /* no entries matched */ - } - mp = mc->mc_pg[mc->mc_top]; - mdbx_cassert(mc, IS_LEAF(mp)); - leaf = NODEPTR(mp, 0); - } - -set1: - mc->mc_flags |= C_INITIALIZED; - mc->mc_flags &= ~C_EOF; - - if (IS_LEAF2(mp)) { - if (op == MDBX_SET_RANGE || op == MDBX_SET_KEY) { - key->iov_len = mc->mc_db->md_xsize; - key->iov_base = LEAF2KEY(mp, mc->mc_ki[mc->mc_top], key->iov_len); - } - return MDBX_SUCCESS; - } - - if (F_ISSET(leaf->mn_flags, F_DUPDATA)) { - rc = mdbx_xcursor_init1(mc, leaf); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - } - if (likely(data)) { - if (F_ISSET(leaf->mn_flags, F_DUPDATA)) { - if (op == MDBX_SET || op == MDBX_SET_KEY || op == MDBX_SET_RANGE) { - rc = mdbx_cursor_first(&mc->mc_xcursor->mx_cursor, data, NULL); - } else { - int ex2, *ex2p; - if (op == MDBX_GET_BOTH) { - ex2p = &ex2; - ex2 = 0; - } else { - ex2p = NULL; - } - rc = mdbx_cursor_set(&mc->mc_xcursor->mx_cursor, data, NULL, - MDBX_SET_RANGE, ex2p); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - } - } else if (op == MDBX_GET_BOTH || op == MDBX_GET_BOTH_RANGE) { - MDBX_val olddata; - if (unlikely((rc = mdbx_node_read(mc, leaf, &olddata)) != MDBX_SUCCESS)) - return rc; - rc = mc->mc_dbx->md_dcmp(data, &olddata); - if (rc) { - if (op == MDBX_GET_BOTH || rc > 0) - return MDBX_NOTFOUND; - rc = 0; - } - *data = olddata; - } else { - if (mc->mc_xcursor) - mc->mc_xcursor->mx_cursor.mc_flags &= ~(C_INITIALIZED | C_EOF); - if (unlikely((rc = mdbx_node_read(mc, leaf, data)) != MDBX_SUCCESS)) - return rc; - } - } - - /* The key already matches in all other cases */ - if (op == MDBX_SET_RANGE || op == MDBX_SET_KEY) - MDBX_GET_KEY(leaf, key); - - mdbx_debug("==> cursor placed on key [%s], data [%s]", DKEY(key), DVAL(data)); - return rc; -} - -/* Move the cursor to the first item in the database. */ -static int mdbx_cursor_first(MDBX_cursor *mc, MDBX_val *key, MDBX_val *data) { - int rc; - MDBX_node *leaf; - - if (mc->mc_xcursor) - mc->mc_xcursor->mx_cursor.mc_flags &= ~(C_INITIALIZED | C_EOF); - - if (!(mc->mc_flags & C_INITIALIZED) || mc->mc_top) { - rc = mdbx_page_search(mc, NULL, MDBX_PS_FIRST); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - } - mdbx_cassert(mc, IS_LEAF(mc->mc_pg[mc->mc_top])); - - leaf = NODEPTR(mc->mc_pg[mc->mc_top], 0); - mc->mc_flags |= C_INITIALIZED; - mc->mc_flags &= ~C_EOF; - - mc->mc_ki[mc->mc_top] = 0; - - if (IS_LEAF2(mc->mc_pg[mc->mc_top])) { - key->iov_len = mc->mc_db->md_xsize; - key->iov_base = LEAF2KEY(mc->mc_pg[mc->mc_top], 0, key->iov_len); - return MDBX_SUCCESS; - } - - if (likely(data)) { - if (F_ISSET(leaf->mn_flags, F_DUPDATA)) { - rc = mdbx_xcursor_init1(mc, leaf); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - rc = mdbx_cursor_first(&mc->mc_xcursor->mx_cursor, data, NULL); - if (unlikely(rc)) - return rc; - } else { - if (unlikely((rc = mdbx_node_read(mc, leaf, data)) != MDBX_SUCCESS)) - return rc; - } - } - MDBX_GET_KEY(leaf, key); - return MDBX_SUCCESS; -} - -/* Move the cursor to the last item in the database. */ -static int mdbx_cursor_last(MDBX_cursor *mc, MDBX_val *key, MDBX_val *data) { - int rc; - MDBX_node *leaf; - - if (mc->mc_xcursor) - mc->mc_xcursor->mx_cursor.mc_flags &= ~(C_INITIALIZED | C_EOF); - - if (likely((mc->mc_flags & (C_EOF | C_DEL)) != C_EOF)) { - if (!(mc->mc_flags & C_INITIALIZED) || mc->mc_top) { - rc = mdbx_page_search(mc, NULL, MDBX_PS_LAST); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - } - mdbx_cassert(mc, IS_LEAF(mc->mc_pg[mc->mc_top])); - } - - mc->mc_ki[mc->mc_top] = NUMKEYS(mc->mc_pg[mc->mc_top]) - 1; - mc->mc_flags |= C_INITIALIZED | C_EOF; - leaf = NODEPTR(mc->mc_pg[mc->mc_top], mc->mc_ki[mc->mc_top]); - - if (IS_LEAF2(mc->mc_pg[mc->mc_top])) { - key->iov_len = mc->mc_db->md_xsize; - key->iov_base = - LEAF2KEY(mc->mc_pg[mc->mc_top], mc->mc_ki[mc->mc_top], key->iov_len); - return MDBX_SUCCESS; - } - - if (likely(data)) { - if (F_ISSET(leaf->mn_flags, F_DUPDATA)) { - rc = mdbx_xcursor_init1(mc, leaf); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - rc = mdbx_cursor_last(&mc->mc_xcursor->mx_cursor, data, NULL); - if (unlikely(rc)) - return rc; - } else { - if (unlikely((rc = mdbx_node_read(mc, leaf, data)) != MDBX_SUCCESS)) - return rc; - } - } - - MDBX_GET_KEY(leaf, key); - return MDBX_SUCCESS; -} - -int mdbx_cursor_get(MDBX_cursor *mc, MDBX_val *key, MDBX_val *data, - MDBX_cursor_op op) { - int rc; - int exact = 0; - int (*mfunc)(MDBX_cursor * mc, MDBX_val * key, MDBX_val * data); - - if (unlikely(mc == NULL)) - return MDBX_EINVAL; - - if (unlikely(mc->mc_signature != MDBX_MC_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(mc->mc_txn->mt_flags & MDBX_TXN_BLOCKED)) - return MDBX_BAD_TXN; - - mdbx_cassert(mc, mc->mc_txn->mt_txnid >= mc->mc_txn->mt_env->me_oldest[0]); - switch (op) { - case MDBX_GET_CURRENT: { - if (unlikely(!(mc->mc_flags & C_INITIALIZED))) - return MDBX_EINVAL; - MDBX_page *mp = mc->mc_pg[mc->mc_top]; - unsigned nkeys = NUMKEYS(mp); - if (mc->mc_ki[mc->mc_top] >= nkeys) { - mdbx_cassert(mc, nkeys <= UINT16_MAX); - mc->mc_ki[mc->mc_top] = (uint16_t)nkeys; - return MDBX_NOTFOUND; - } - assert(nkeys > 0); - - rc = MDBX_SUCCESS; - if (IS_LEAF2(mp)) { - key->iov_len = mc->mc_db->md_xsize; - key->iov_base = LEAF2KEY(mp, mc->mc_ki[mc->mc_top], key->iov_len); - } else { - MDBX_node *leaf = NODEPTR(mp, mc->mc_ki[mc->mc_top]); - MDBX_GET_KEY(leaf, key); - if (data) { - if (F_ISSET(leaf->mn_flags, F_DUPDATA)) { - if (unlikely(!(mc->mc_xcursor->mx_cursor.mc_flags & C_INITIALIZED))) { - rc = mdbx_xcursor_init1(mc, leaf); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - rc = mdbx_cursor_first(&mc->mc_xcursor->mx_cursor, data, NULL); - if (unlikely(rc)) - return rc; - } - rc = mdbx_cursor_get(&mc->mc_xcursor->mx_cursor, data, NULL, - MDBX_GET_CURRENT); - } else { - rc = mdbx_node_read(mc, leaf, data); - } - if (unlikely(rc)) - return rc; - } - } - break; - } - case MDBX_GET_BOTH: - case MDBX_GET_BOTH_RANGE: - if (unlikely(data == NULL)) - return MDBX_EINVAL; - if (unlikely(mc->mc_xcursor == NULL)) - return MDBX_INCOMPATIBLE; - /* FALLTHRU */ - case MDBX_SET: - case MDBX_SET_KEY: - case MDBX_SET_RANGE: - if (unlikely(key == NULL)) - return MDBX_EINVAL; - rc = mdbx_cursor_set(mc, key, data, op, - op == MDBX_SET_RANGE ? NULL : &exact); - break; - case MDBX_GET_MULTIPLE: - if (unlikely(data == NULL || !(mc->mc_flags & C_INITIALIZED))) - return MDBX_EINVAL; - if (unlikely(!(mc->mc_db->md_flags & MDBX_DUPFIXED))) - return MDBX_INCOMPATIBLE; - rc = MDBX_SUCCESS; - if (!(mc->mc_xcursor->mx_cursor.mc_flags & C_INITIALIZED) || - (mc->mc_xcursor->mx_cursor.mc_flags & C_EOF)) - break; - goto fetchm; - case MDBX_NEXT_MULTIPLE: - if (unlikely(data == NULL)) - return MDBX_EINVAL; - if (unlikely(!(mc->mc_db->md_flags & MDBX_DUPFIXED))) - return MDBX_INCOMPATIBLE; - rc = mdbx_cursor_next(mc, key, data, MDBX_NEXT_DUP); - if (rc == MDBX_SUCCESS) { - if (mc->mc_xcursor->mx_cursor.mc_flags & C_INITIALIZED) { - MDBX_cursor *mx; - fetchm: - mx = &mc->mc_xcursor->mx_cursor; - data->iov_len = NUMKEYS(mx->mc_pg[mx->mc_top]) * mx->mc_db->md_xsize; - data->iov_base = PAGEDATA(mx->mc_pg[mx->mc_top]); - mx->mc_ki[mx->mc_top] = NUMKEYS(mx->mc_pg[mx->mc_top]) - 1; - } else { - rc = MDBX_NOTFOUND; - } - } - break; - case MDBX_PREV_MULTIPLE: - if (data == NULL) - return MDBX_EINVAL; - if (!(mc->mc_db->md_flags & MDBX_DUPFIXED)) - return MDBX_INCOMPATIBLE; - rc = MDBX_SUCCESS; - if (!(mc->mc_flags & C_INITIALIZED)) - rc = mdbx_cursor_last(mc, key, data); - if (rc == MDBX_SUCCESS) { - MDBX_cursor *mx = &mc->mc_xcursor->mx_cursor; - if (mx->mc_flags & C_INITIALIZED) { - rc = mdbx_cursor_sibling(mx, 0); - if (rc == MDBX_SUCCESS) - goto fetchm; - } else { - rc = MDBX_NOTFOUND; - } - } - break; - case MDBX_NEXT: - case MDBX_NEXT_DUP: - case MDBX_NEXT_NODUP: - rc = mdbx_cursor_next(mc, key, data, op); - break; - case MDBX_PREV: - case MDBX_PREV_DUP: - case MDBX_PREV_NODUP: - rc = mdbx_cursor_prev(mc, key, data, op); - break; - case MDBX_FIRST: - rc = mdbx_cursor_first(mc, key, data); - break; - case MDBX_FIRST_DUP: - mfunc = mdbx_cursor_first; - mmove: - if (unlikely(data == NULL || !(mc->mc_flags & C_INITIALIZED))) - return MDBX_EINVAL; - if (unlikely(mc->mc_xcursor == NULL)) - return MDBX_INCOMPATIBLE; - if (mc->mc_ki[mc->mc_top] >= NUMKEYS(mc->mc_pg[mc->mc_top])) { - mc->mc_ki[mc->mc_top] = NUMKEYS(mc->mc_pg[mc->mc_top]); - return MDBX_NOTFOUND; - } - { - MDBX_node *leaf = NODEPTR(mc->mc_pg[mc->mc_top], mc->mc_ki[mc->mc_top]); - if (!F_ISSET(leaf->mn_flags, F_DUPDATA)) { - MDBX_GET_KEY(leaf, key); - rc = mdbx_node_read(mc, leaf, data); - break; - } - } - if (unlikely(!(mc->mc_xcursor->mx_cursor.mc_flags & C_INITIALIZED))) - return MDBX_EINVAL; - rc = mfunc(&mc->mc_xcursor->mx_cursor, data, NULL); - break; - case MDBX_LAST: - rc = mdbx_cursor_last(mc, key, data); - break; - case MDBX_LAST_DUP: - mfunc = mdbx_cursor_last; - goto mmove; - default: - mdbx_debug("unhandled/unimplemented cursor operation %u", op); - return MDBX_EINVAL; - } - - mc->mc_flags &= ~C_DEL; - return rc; -} - -/* Touch all the pages in the cursor stack. Set mc_top. - * Makes sure all the pages are writable, before attempting a write operation. - * [in] mc The cursor to operate on. */ -static int mdbx_cursor_touch(MDBX_cursor *mc) { - int rc = MDBX_SUCCESS; - - if (mc->mc_dbi >= CORE_DBS && - (*mc->mc_dbflag & (DB_DIRTY | DB_DUPDATA)) == 0) { - /* Touch DB record of named DB */ - MDBX_cursor mc2; - MDBX_xcursor mcx; - if (TXN_DBI_CHANGED(mc->mc_txn, mc->mc_dbi)) - return MDBX_BAD_DBI; - rc = mdbx_cursor_init(&mc2, mc->mc_txn, MAIN_DBI, &mcx); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - rc = mdbx_page_search(&mc2, &mc->mc_dbx->md_name, MDBX_PS_MODIFY); - if (unlikely(rc)) - return rc; - *mc->mc_dbflag |= DB_DIRTY; - } - mc->mc_top = 0; - if (mc->mc_snum) { - do { - rc = mdbx_page_touch(mc); - } while (!rc && ++(mc->mc_top) < mc->mc_snum); - mc->mc_top = mc->mc_snum - 1; - } - return rc; -} - -/* Do not spill pages to disk if txn is getting full, may fail instead */ -#define MDBX_NOSPILL 0x8000 - -int mdbx_cursor_put(MDBX_cursor *mc, MDBX_val *key, MDBX_val *data, - unsigned flags) { - MDBX_env *env; - MDBX_page *fp, *sub_root = NULL; - uint16_t fp_flags; - MDBX_val xdata, *rdata, dkey, olddata; - MDBX_db dummy; - unsigned mcount = 0, dcount = 0, nospill; - size_t nsize; - int rc = MDBX_SUCCESS, rc2; - unsigned nflags; - DKBUF; - - if (unlikely(mc == NULL || key == NULL)) - return MDBX_EINVAL; - - if (unlikely(mc->mc_signature != MDBX_MC_SIGNATURE)) - return MDBX_EBADSIGN; - - env = mc->mc_txn->mt_env; - - /* Check this first so counter will always be zero on any early failures. */ - if (flags & MDBX_MULTIPLE) { - if (unlikely(!F_ISSET(mc->mc_db->md_flags, MDBX_DUPFIXED))) - return MDBX_INCOMPATIBLE; - if (unlikely(data[1].iov_len >= INT_MAX)) - return MDBX_EINVAL; - dcount = (unsigned)data[1].iov_len; - data[1].iov_len = 0; - } - - if (flags & MDBX_RESERVE) { - if (unlikely(mc->mc_db->md_flags & (MDBX_DUPSORT | MDBX_REVERSEDUP))) - return MDBX_INCOMPATIBLE; - data->iov_base = nullptr; - } - - nospill = flags & MDBX_NOSPILL; - flags &= ~MDBX_NOSPILL; - - if (unlikely(mc->mc_txn->mt_flags & (MDBX_TXN_RDONLY | MDBX_TXN_BLOCKED))) - return (mc->mc_txn->mt_flags & MDBX_TXN_RDONLY) ? MDBX_EACCESS - : MDBX_BAD_TXN; - - if (unlikely(key->iov_len > env->me_maxkey_limit)) - return MDBX_BAD_VALSIZE; - - if (unlikely(data->iov_len > ((mc->mc_db->md_flags & MDBX_DUPSORT) - ? env->me_maxkey_limit - : MDBX_MAXDATASIZE))) - return MDBX_BAD_VALSIZE; - - if ((mc->mc_db->md_flags & MDBX_INTEGERKEY) && - unlikely(key->iov_len != sizeof(uint32_t) && - key->iov_len != sizeof(uint64_t))) { - mdbx_cassert(mc, !"key-size is invalid for MDBX_INTEGERKEY"); - return MDBX_BAD_VALSIZE; - } - - if ((mc->mc_db->md_flags & MDBX_INTEGERDUP) && - unlikely(data->iov_len != sizeof(uint32_t) && - data->iov_len != sizeof(uint64_t))) { - mdbx_cassert(mc, !"data-size is invalid MDBX_INTEGERDUP"); - return MDBX_BAD_VALSIZE; - } - - mdbx_debug("==> put db %d key [%s], size %" PRIuPTR - ", data [%s] size %" PRIuPTR, - DDBI(mc), DKEY(key), key ? key->iov_len : 0, - DVAL((flags & MDBX_RESERVE) ? nullptr : data), data->iov_len); - - int dupdata_flag = 0; - if (flags & MDBX_CURRENT) { - /* Опция MDBX_CURRENT означает, что запрошено обновление текущей записи, - * на которой сейчас стоит курсор. Проверяем что переданный ключ совпадает - * со значением в текущей позиции курсора. - * Здесь проще вызвать mdbx_cursor_get(), так как для обслуживания таблиц - * с MDBX_DUPSORT также требуется текущий размер данных. */ - MDBX_val current_key, current_data; - rc = mdbx_cursor_get(mc, ¤t_key, ¤t_data, MDBX_GET_CURRENT); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - if (mc->mc_dbx->md_cmp(key, ¤t_key) != 0) - return MDBX_EKEYMISMATCH; - - if (F_ISSET(mc->mc_db->md_flags, MDBX_DUPSORT)) { - MDBX_node *leaf = NODEPTR(mc->mc_pg[mc->mc_top], mc->mc_ki[mc->mc_top]); - if (F_ISSET(leaf->mn_flags, F_DUPDATA)) { - mdbx_cassert(mc, - mc->mc_xcursor != NULL && - (mc->mc_xcursor->mx_cursor.mc_flags & C_INITIALIZED)); - /* Если за ключом более одного значения, либо если размер данных - * отличается, то вместо inplace обновления требуется удаление и - * последующая вставка. */ - if (mc->mc_xcursor->mx_db.md_entries > 1 || - current_data.iov_len != data->iov_len) { - rc = mdbx_cursor_del(mc, 0); - if (rc != MDBX_SUCCESS) - return rc; - flags -= MDBX_CURRENT; - } - } - } - } - - if (mc->mc_db->md_root == P_INVALID) { - /* new database, cursor has nothing to point to */ - mc->mc_snum = 0; - mc->mc_top = 0; - mc->mc_flags &= ~C_INITIALIZED; - rc = MDBX_NO_ROOT; - } else if ((flags & MDBX_CURRENT) == 0) { - int exact = 0; - MDBX_val d2; - if (flags & MDBX_APPEND) { - MDBX_val k2; - rc = mdbx_cursor_last(mc, &k2, &d2); - if (rc == 0) { - rc = mc->mc_dbx->md_cmp(key, &k2); - if (rc > 0) { - rc = MDBX_NOTFOUND; - mc->mc_ki[mc->mc_top]++; - } else { - /* new key is <= last key */ - rc = MDBX_EKEYMISMATCH; - } - } - } else { - rc = mdbx_cursor_set(mc, key, &d2, MDBX_SET, &exact); - } - if ((flags & MDBX_NOOVERWRITE) && - (rc == MDBX_SUCCESS || rc == MDBX_EKEYMISMATCH)) { - mdbx_debug("duplicate key [%s]", DKEY(key)); - *data = d2; - return MDBX_KEYEXIST; - } - if (rc && unlikely(rc != MDBX_NOTFOUND)) - return rc; - } - - mc->mc_flags &= ~C_DEL; - - /* Cursor is positioned, check for room in the dirty list */ - if (!nospill) { - if (flags & MDBX_MULTIPLE) { - rdata = &xdata; - xdata.iov_len = data->iov_len * dcount; - } else { - rdata = data; - } - if (unlikely(rc2 = mdbx_page_spill(mc, key, rdata))) - return rc2; - } - - if (rc == MDBX_NO_ROOT) { - MDBX_page *np; - /* new database, write a root leaf page */ - mdbx_debug("allocating new root leaf page"); - if (unlikely(rc2 = mdbx_page_new(mc, P_LEAF, 1, &np))) { - return rc2; - } - assert(np->mp_flags & P_LEAF); - rc2 = mdbx_cursor_push(mc, np); - if (unlikely(rc2 != MDBX_SUCCESS)) - return rc2; - mc->mc_db->md_root = np->mp_pgno; - mc->mc_db->md_depth++; - *mc->mc_dbflag |= DB_DIRTY; - if ((mc->mc_db->md_flags & (MDBX_DUPSORT | MDBX_DUPFIXED)) == MDBX_DUPFIXED) - np->mp_flags |= P_LEAF2; - mc->mc_flags |= C_INITIALIZED; - } else { - /* make sure all cursor pages are writable */ - rc2 = mdbx_cursor_touch(mc); - if (unlikely(rc2)) - return rc2; - } - - bool insert_key, insert_data, do_sub = false; - insert_key = insert_data = (rc != MDBX_SUCCESS); - if (insert_key) { - /* The key does not exist */ - mdbx_debug("inserting key at index %i", mc->mc_ki[mc->mc_top]); - if ((mc->mc_db->md_flags & MDBX_DUPSORT) && - LEAFSIZE(key, data) > env->me_nodemax) { - /* Too big for a node, insert in sub-DB. Set up an empty - * "old sub-page" for prep_subDB to expand to a full page. */ - fp_flags = P_LEAF | P_DIRTY; - fp = env->me_pbuf; - fp->mp_leaf2_ksize = (uint16_t)data->iov_len; /* used if MDBX_DUPFIXED */ - fp->mp_lower = fp->mp_upper = 0; - olddata.iov_len = PAGEHDRSZ; - goto prep_subDB; - } - } else { - /* there's only a key anyway, so this is a no-op */ - if (IS_LEAF2(mc->mc_pg[mc->mc_top])) { - char *ptr; - unsigned ksize = mc->mc_db->md_xsize; - if (key->iov_len != ksize) - return MDBX_BAD_VALSIZE; - ptr = LEAF2KEY(mc->mc_pg[mc->mc_top], mc->mc_ki[mc->mc_top], ksize); - memcpy(ptr, key->iov_base, ksize); - fix_parent: - /* if overwriting slot 0 of leaf, need to - * update branch key if there is a parent page */ - if (mc->mc_top && !mc->mc_ki[mc->mc_top]) { - unsigned dtop = 1; - mc->mc_top--; - /* slot 0 is always an empty key, find real slot */ - while (mc->mc_top && !mc->mc_ki[mc->mc_top]) { - mc->mc_top--; - dtop++; - } - if (mc->mc_ki[mc->mc_top]) - rc2 = mdbx_update_key(mc, key); - else - rc2 = MDBX_SUCCESS; - mdbx_cassert(mc, mc->mc_top + dtop < UINT16_MAX); - mc->mc_top += (uint16_t)dtop; - if (rc2) - return rc2; - } - return MDBX_SUCCESS; - } - - more:; - MDBX_node *leaf = NODEPTR(mc->mc_pg[mc->mc_top], mc->mc_ki[mc->mc_top]); - olddata.iov_len = NODEDSZ(leaf); - olddata.iov_base = NODEDATA(leaf); - - /* DB has dups? */ - if (F_ISSET(mc->mc_db->md_flags, MDBX_DUPSORT)) { - /* Prepare (sub-)page/sub-DB to accept the new item, if needed. - * fp: old sub-page or a header faking it. - * mp: new (sub-)page. offset: growth in page size. - * xdata: node data with new page or DB. */ - unsigned i, offset = 0; - MDBX_page *mp = fp = xdata.iov_base = env->me_pbuf; - mp->mp_pgno = mc->mc_pg[mc->mc_top]->mp_pgno; - - /* Was a single item before, must convert now */ - if (!F_ISSET(leaf->mn_flags, F_DUPDATA)) { - - /* does data match? */ - if (!mc->mc_dbx->md_dcmp(data, &olddata)) { - if (unlikely(flags & (MDBX_NODUPDATA | MDBX_APPENDDUP))) - return MDBX_KEYEXIST; - /* overwrite it */ - goto current; - } - - /* Just overwrite the current item */ - if (flags & MDBX_CURRENT) - goto current; - - /* Back up original data item */ - dupdata_flag = 1; - dkey.iov_len = olddata.iov_len; - dkey.iov_base = memcpy(fp + 1, olddata.iov_base, olddata.iov_len); - - /* Make sub-page header for the dup items, with dummy body */ - fp->mp_flags = P_LEAF | P_DIRTY | P_SUBP; - fp->mp_lower = 0; - xdata.iov_len = PAGEHDRSZ + dkey.iov_len + data->iov_len; - if (mc->mc_db->md_flags & MDBX_DUPFIXED) { - fp->mp_flags |= P_LEAF2; - fp->mp_leaf2_ksize = (uint16_t)data->iov_len; - xdata.iov_len += 2 * data->iov_len; /* leave space for 2 more */ - } else { - xdata.iov_len += 2 * (sizeof(indx_t) + NODESIZE) + - (dkey.iov_len & 1) + (data->iov_len & 1); - } - fp->mp_upper = (uint16_t)(xdata.iov_len - PAGEHDRSZ); - olddata.iov_len = xdata.iov_len; /* pretend olddata is fp */ - } else if (leaf->mn_flags & F_SUBDATA) { - /* Data is on sub-DB, just store it */ - flags |= F_DUPDATA | F_SUBDATA; - goto put_sub; - } else { - /* Data is on sub-page */ - fp = olddata.iov_base; - switch (flags) { - default: - if (!(mc->mc_db->md_flags & MDBX_DUPFIXED)) { - offset = EVEN(NODESIZE + sizeof(indx_t) + data->iov_len); - break; - } - offset = fp->mp_leaf2_ksize; - if (SIZELEFT(fp) < offset) { - offset *= 4; /* space for 4 more */ - break; - } - /* FALLTHRU: Big enough MDBX_DUPFIXaED sub-page */ - __fallthrough; - case MDBX_CURRENT | MDBX_NODUPDATA: - case MDBX_CURRENT: - fp->mp_flags |= P_DIRTY; - fp->mp_pgno = mp->mp_pgno; - mc->mc_xcursor->mx_cursor.mc_pg[0] = fp; - flags |= F_DUPDATA; - goto put_sub; - } - xdata.iov_len = olddata.iov_len + offset; - } - - fp_flags = fp->mp_flags; - if (NODESIZE + NODEKSZ(leaf) + xdata.iov_len > env->me_nodemax) { - /* Too big for a sub-page, convert to sub-DB */ - fp_flags &= ~P_SUBP; - prep_subDB: - dummy.md_xsize = 0; - dummy.md_flags = 0; - if (mc->mc_db->md_flags & MDBX_DUPFIXED) { - fp_flags |= P_LEAF2; - dummy.md_xsize = fp->mp_leaf2_ksize; - dummy.md_flags = MDBX_DUPFIXED; - if (mc->mc_db->md_flags & MDBX_INTEGERDUP) - dummy.md_flags |= MDBX_INTEGERKEY; - } - dummy.md_depth = 1; - dummy.md_branch_pages = 0; - dummy.md_leaf_pages = 1; - dummy.md_overflow_pages = 0; - dummy.md_entries = NUMKEYS(fp); - xdata.iov_len = sizeof(MDBX_db); - xdata.iov_base = &dummy; - if ((rc = mdbx_page_alloc(mc, 1, &mp, MDBX_ALLOC_ALL))) - return rc; - mdbx_cassert(mc, env->me_psize > olddata.iov_len); - offset = env->me_psize - (unsigned)olddata.iov_len; - flags |= F_DUPDATA | F_SUBDATA; - dummy.md_root = mp->mp_pgno; - dummy.md_seq = dummy.md_merkle = 0; - sub_root = mp; - } - if (mp != fp) { - mp->mp_flags = fp_flags | P_DIRTY; - mp->mp_leaf2_ksize = fp->mp_leaf2_ksize; - mp->mp_lower = fp->mp_lower; - mdbx_cassert(mc, fp->mp_upper + offset <= UINT16_MAX); - mp->mp_upper = (indx_t)(fp->mp_upper + offset); - if (fp_flags & P_LEAF2) { - memcpy(PAGEDATA(mp), PAGEDATA(fp), NUMKEYS(fp) * fp->mp_leaf2_ksize); - } else { - memcpy((char *)mp + mp->mp_upper + PAGEHDRSZ, - (char *)fp + fp->mp_upper + PAGEHDRSZ, - olddata.iov_len - fp->mp_upper - PAGEHDRSZ); - memcpy((char *)(&mp->mp_ptrs), (char *)(&fp->mp_ptrs), - NUMKEYS(fp) * sizeof(mp->mp_ptrs[0])); - for (i = 0; i < NUMKEYS(fp); i++) { - mdbx_cassert(mc, mp->mp_ptrs[i] + offset <= UINT16_MAX); - mp->mp_ptrs[i] += (indx_t)offset; - } - } - } - - rdata = &xdata; - flags |= F_DUPDATA; - do_sub = true; - if (!insert_key) - mdbx_node_del(mc, 0); - goto new_sub; - } - current: - /* MDBX passes F_SUBDATA in 'flags' to write a DB record */ - if (unlikely((leaf->mn_flags ^ flags) & F_SUBDATA)) - return MDBX_INCOMPATIBLE; - /* overflow page overwrites need special handling */ - if (F_ISSET(leaf->mn_flags, F_BIGDATA)) { - MDBX_page *omp; - pgno_t pg; - int level, ovpages, dpages = OVPAGES(env, data->iov_len); - - memcpy(&pg, olddata.iov_base, sizeof(pg)); - if (unlikely((rc2 = mdbx_page_get(mc, pg, &omp, &level)) != 0)) - return rc2; - ovpages = omp->mp_pages; - - /* Is the ov page large enough? */ - if (ovpages >= dpages) { - if (!(omp->mp_flags & P_DIRTY) && - (level || (env->me_flags & MDBX_WRITEMAP))) { - rc = mdbx_page_unspill(mc->mc_txn, omp, &omp); - if (unlikely(rc)) - return rc; - level = 0; /* dirty in this txn or clean */ - } - /* Is it dirty? */ - if (omp->mp_flags & P_DIRTY) { - /* yes, overwrite it. Note in this case we don't - * bother to try shrinking the page if the new data - * is smaller than the overflow threshold. */ - if (unlikely(level > 1)) { - /* It is writable only in a parent txn */ - MDBX_page *np = mdbx_page_malloc(mc->mc_txn, ovpages); - MDBX_ID2 id2; - if (unlikely(!np)) - return MDBX_ENOMEM; - id2.mid = pg; - id2.mptr = np; - /* Note - this page is already counted in parent's dirtyroom */ - rc2 = mdbx_mid2l_insert(mc->mc_txn->mt_rw_dirtylist, &id2); - mdbx_cassert(mc, rc2 == 0); - - /* Currently we make the page look as with put() in the - * parent txn, in case the user peeks at MDBX_RESERVEd - * or unused parts. Some users treat ovpages specially. */ - const size_t whole = pgno2bytes(env, ovpages); - /* Skip the part where MDBX will put *data. - * Copy end of page, adjusting alignment so - * compiler may copy words instead of bytes. */ - const size_t off = - (PAGEHDRSZ + data->iov_len) & -(intptr_t)sizeof(size_t); - memcpy((size_t *)((char *)np + off), (size_t *)((char *)omp + off), - whole - off); - memcpy(np, omp, PAGEHDRSZ); /* Copy header of page */ - omp = np; - } - SETDSZ(leaf, data->iov_len); - if (F_ISSET(flags, MDBX_RESERVE)) - data->iov_base = PAGEDATA(omp); - else - memcpy(PAGEDATA(omp), data->iov_base, data->iov_len); - return MDBX_SUCCESS; - } - } - if ((rc2 = mdbx_ovpage_free(mc, omp)) != MDBX_SUCCESS) - return rc2; - } else if (data->iov_len == olddata.iov_len) { - assert(EVEN(key->iov_len) == EVEN(leaf->mn_ksize)); - /* same size, just replace it. Note that we could - * also reuse this node if the new data is smaller, - * but instead we opt to shrink the node in that case. */ - if (F_ISSET(flags, MDBX_RESERVE)) - data->iov_base = olddata.iov_base; - else if (!(mc->mc_flags & C_SUB)) - memcpy(olddata.iov_base, data->iov_base, data->iov_len); - else { - mdbx_cassert(mc, NUMKEYS(mc->mc_pg[mc->mc_top]) == 1); - mdbx_cassert(mc, mc->mc_pg[mc->mc_top]->mp_upper == - mc->mc_pg[mc->mc_top]->mp_lower); - mdbx_cassert(mc, IS_LEAF(mc->mc_pg[mc->mc_top]) && - !IS_LEAF2(mc->mc_pg[mc->mc_top])); - mdbx_cassert(mc, NODEDSZ(leaf) == 0); - mdbx_cassert(mc, leaf->mn_flags == 0); - mdbx_cassert(mc, key->iov_len < UINT16_MAX); - leaf->mn_ksize = (uint16_t)key->iov_len; - memcpy(NODEKEY(leaf), key->iov_base, key->iov_len); - assert((char *)NODEDATA(leaf) + NODEDSZ(leaf) < - (char *)(mc->mc_pg[mc->mc_top]) + env->me_psize); - goto fix_parent; - } - return MDBX_SUCCESS; - } - mdbx_node_del(mc, 0); - } - - rdata = data; - -new_sub: - nflags = flags & NODE_ADD_FLAGS; - nsize = IS_LEAF2(mc->mc_pg[mc->mc_top]) ? key->iov_len - : mdbx_leaf_size(env, key, rdata); - if (SIZELEFT(mc->mc_pg[mc->mc_top]) < nsize) { - if ((flags & (F_DUPDATA | F_SUBDATA)) == F_DUPDATA) - nflags &= ~MDBX_APPEND; /* sub-page may need room to grow */ - if (!insert_key) - nflags |= MDBX_SPLIT_REPLACE; - rc = mdbx_page_split(mc, key, rdata, P_INVALID, nflags); - } else { - /* There is room already in this leaf page. */ - rc = mdbx_node_add(mc, mc->mc_ki[mc->mc_top], key, rdata, 0, nflags); - if (likely(rc == 0)) { - /* Adjust other cursors pointing to mp */ - MDBX_cursor *m2, *m3; - MDBX_dbi dbi = mc->mc_dbi; - unsigned i = mc->mc_top; - MDBX_page *mp = mc->mc_pg[i]; - - for (m2 = mc->mc_txn->mt_cursors[dbi]; m2; m2 = m2->mc_next) { - if (mc->mc_flags & C_SUB) - m3 = &m2->mc_xcursor->mx_cursor; - else - m3 = m2; - if (m3 == mc || m3->mc_snum < mc->mc_snum || m3->mc_pg[i] != mp) - continue; - if (m3->mc_ki[i] >= mc->mc_ki[i] && insert_key) { - m3->mc_ki[i]++; - } - if (XCURSOR_INITED(m3)) - XCURSOR_REFRESH(m3, mp, m3->mc_ki[i]); - } - } - } - - if (likely(rc == MDBX_SUCCESS)) { - /* Now store the actual data in the child DB. Note that we're - * storing the user data in the keys field, so there are strict - * size limits on dupdata. The actual data fields of the child - * DB are all zero size. */ - if (do_sub) { - int xflags; - size_t ecount; - put_sub: - xdata.iov_len = 0; - xdata.iov_base = ""; - MDBX_node *leaf = NODEPTR(mc->mc_pg[mc->mc_top], mc->mc_ki[mc->mc_top]); - if (flags & MDBX_CURRENT) { - xflags = (flags & MDBX_NODUPDATA) - ? MDBX_CURRENT | MDBX_NOOVERWRITE | MDBX_NOSPILL - : MDBX_CURRENT | MDBX_NOSPILL; - } else { - rc2 = mdbx_xcursor_init1(mc, leaf); - if (unlikely(rc2 != MDBX_SUCCESS)) - return rc2; - xflags = (flags & MDBX_NODUPDATA) ? MDBX_NOOVERWRITE | MDBX_NOSPILL - : MDBX_NOSPILL; - } - if (sub_root) - mc->mc_xcursor->mx_cursor.mc_pg[0] = sub_root; - /* converted, write the original data first */ - if (dupdata_flag) { - rc = mdbx_cursor_put(&mc->mc_xcursor->mx_cursor, &dkey, &xdata, xflags); - if (unlikely(rc)) - goto bad_sub; - /* we've done our job */ - dkey.iov_len = 0; - } - if (!(leaf->mn_flags & F_SUBDATA) || sub_root) { - /* Adjust other cursors pointing to mp */ - MDBX_cursor *m2; - MDBX_xcursor *mx = mc->mc_xcursor; - unsigned i = mc->mc_top; - MDBX_page *mp = mc->mc_pg[i]; - int nkeys = NUMKEYS(mp); - - for (m2 = mc->mc_txn->mt_cursors[mc->mc_dbi]; m2; m2 = m2->mc_next) { - if (m2 == mc || m2->mc_snum < mc->mc_snum) - continue; - if (!(m2->mc_flags & C_INITIALIZED)) - continue; - if (m2->mc_pg[i] == mp) { - if (m2->mc_ki[i] == mc->mc_ki[i]) { - rc2 = mdbx_xcursor_init2(m2, mx, dupdata_flag); - if (unlikely(rc2 != MDBX_SUCCESS)) - return rc2; - } else if (!insert_key && m2->mc_ki[i] < nkeys) { - XCURSOR_REFRESH(m2, mp, m2->mc_ki[i]); - } - } - } - } - mdbx_cassert(mc, mc->mc_xcursor->mx_db.md_entries < SIZE_MAX); - ecount = (size_t)mc->mc_xcursor->mx_db.md_entries; - if (flags & MDBX_APPENDDUP) - xflags |= MDBX_APPEND; - rc = mdbx_cursor_put(&mc->mc_xcursor->mx_cursor, data, &xdata, xflags); - if (flags & F_SUBDATA) { - void *db = NODEDATA(leaf); - memcpy(db, &mc->mc_xcursor->mx_db, sizeof(MDBX_db)); - } - insert_data = (ecount != (size_t)mc->mc_xcursor->mx_db.md_entries); - } - /* Increment count unless we just replaced an existing item. */ - if (insert_data) - mc->mc_db->md_entries++; - if (insert_key) { - /* Invalidate txn if we created an empty sub-DB */ - if (unlikely(rc)) - goto bad_sub; - /* If we succeeded and the key didn't exist before, - * make sure the cursor is marked valid. */ - mc->mc_flags |= C_INITIALIZED; - } - if (flags & MDBX_MULTIPLE) { - if (!rc) { - mcount++; - /* let caller know how many succeeded, if any */ - data[1].iov_len = mcount; - if (mcount < dcount) { - data[0].iov_base = (char *)data[0].iov_base + data[0].iov_len; - insert_key = insert_data = false; - goto more; - } - } - } - return rc; - bad_sub: - if (unlikely(rc == MDBX_KEYEXIST)) - mdbx_error("unexpected %s", "MDBX_KEYEXIST"); - /* should not happen, we deleted that item */ - rc = MDBX_PROBLEM; - } - mc->mc_txn->mt_flags |= MDBX_TXN_ERROR; - return rc; -} - -int mdbx_cursor_del(MDBX_cursor *mc, unsigned flags) { - MDBX_node *leaf; - MDBX_page *mp; - int rc; - - if (unlikely(!mc)) - return MDBX_EINVAL; - - if (unlikely(mc->mc_signature != MDBX_MC_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(mc->mc_txn->mt_flags & (MDBX_TXN_RDONLY | MDBX_TXN_BLOCKED))) - return (mc->mc_txn->mt_flags & MDBX_TXN_RDONLY) ? MDBX_EACCESS - : MDBX_BAD_TXN; - - if (unlikely(!(mc->mc_flags & C_INITIALIZED))) - return MDBX_EINVAL; - - if (unlikely(mc->mc_ki[mc->mc_top] >= NUMKEYS(mc->mc_pg[mc->mc_top]))) - return MDBX_NOTFOUND; - - if (unlikely(!(flags & MDBX_NOSPILL) && - (rc = mdbx_page_spill(mc, NULL, NULL)))) - return rc; - - rc = mdbx_cursor_touch(mc); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - - mp = mc->mc_pg[mc->mc_top]; - if (IS_LEAF2(mp)) - goto del_key; - leaf = NODEPTR(mp, mc->mc_ki[mc->mc_top]); - - if (F_ISSET(leaf->mn_flags, F_DUPDATA)) { - if (flags & MDBX_NODUPDATA) { - /* mdbx_cursor_del0() will subtract the final entry */ - mc->mc_db->md_entries -= mc->mc_xcursor->mx_db.md_entries - 1; - mc->mc_xcursor->mx_cursor.mc_flags &= ~C_INITIALIZED; - } else { - if (!F_ISSET(leaf->mn_flags, F_SUBDATA)) { - mc->mc_xcursor->mx_cursor.mc_pg[0] = NODEDATA(leaf); - } - rc = mdbx_cursor_del(&mc->mc_xcursor->mx_cursor, MDBX_NOSPILL); - if (unlikely(rc)) - return rc; - /* If sub-DB still has entries, we're done */ - if (mc->mc_xcursor->mx_db.md_entries) { - if (leaf->mn_flags & F_SUBDATA) { - /* update subDB info */ - void *db = NODEDATA(leaf); - memcpy(db, &mc->mc_xcursor->mx_db, sizeof(MDBX_db)); - } else { - MDBX_cursor *m2; - /* shrink fake page */ - mdbx_node_shrink(mp, mc->mc_ki[mc->mc_top]); - leaf = NODEPTR(mp, mc->mc_ki[mc->mc_top]); - mc->mc_xcursor->mx_cursor.mc_pg[0] = NODEDATA(leaf); - /* fix other sub-DB cursors pointed at fake pages on this page */ - for (m2 = mc->mc_txn->mt_cursors[mc->mc_dbi]; m2; m2 = m2->mc_next) { - if (m2 == mc || m2->mc_snum < mc->mc_snum) - continue; - if (!(m2->mc_flags & C_INITIALIZED)) - continue; - if (m2->mc_pg[mc->mc_top] == mp) { - MDBX_node *n2 = leaf; - if (m2->mc_ki[mc->mc_top] >= NUMKEYS(mp)) - continue; - if (m2->mc_ki[mc->mc_top] != mc->mc_ki[mc->mc_top]) { - n2 = NODEPTR(mp, m2->mc_ki[mc->mc_top]); - if (n2->mn_flags & F_SUBDATA) - continue; - } - m2->mc_xcursor->mx_cursor.mc_pg[0] = NODEDATA(n2); - } - } - } - mc->mc_db->md_entries--; - mdbx_cassert(mc, mc->mc_db->md_entries > 0 && mc->mc_db->md_depth > 0 && - mc->mc_db->md_root != P_INVALID); - return rc; - } else { - mc->mc_xcursor->mx_cursor.mc_flags &= ~C_INITIALIZED; - } - /* otherwise fall thru and delete the sub-DB */ - } - - if (leaf->mn_flags & F_SUBDATA) { - /* add all the child DB's pages to the free list */ - rc = mdbx_drop0(&mc->mc_xcursor->mx_cursor, 0); - if (unlikely(rc)) - goto fail; - } - } - /* MDBX passes F_SUBDATA in 'flags' to delete a DB record */ - else if (unlikely((leaf->mn_flags ^ flags) & F_SUBDATA)) { - rc = MDBX_INCOMPATIBLE; - goto fail; - } - - /* add overflow pages to free list */ - if (F_ISSET(leaf->mn_flags, F_BIGDATA)) { - MDBX_page *omp; - pgno_t pg; - - memcpy(&pg, NODEDATA(leaf), sizeof(pg)); - if (unlikely((rc = mdbx_page_get(mc, pg, &omp, NULL)) || - (rc = mdbx_ovpage_free(mc, omp)))) - goto fail; - } - -del_key: - return mdbx_cursor_del0(mc); - -fail: - mc->mc_txn->mt_flags |= MDBX_TXN_ERROR; - return rc; -} - -/* Allocate and initialize new pages for a database. - * Set MDBX_TXN_ERROR on failure. - * - * [in] mc a cursor on the database being added to. - * [in] flags flags defining what type of page is being allocated. - * [in] num the number of pages to allocate. This is usually 1, - * unless allocating overflow pages for a large record. - * [out] mp Address of a page, or NULL on failure. - * - * Returns 0 on success, non-zero on failure. */ -static int mdbx_page_new(MDBX_cursor *mc, unsigned flags, unsigned num, - MDBX_page **mp) { - MDBX_page *np; - int rc; - - if (unlikely((rc = mdbx_page_alloc(mc, num, &np, MDBX_ALLOC_ALL)))) - return rc; - mdbx_debug("allocated new page #%" PRIaPGNO ", size %u", np->mp_pgno, - mc->mc_txn->mt_env->me_psize); - np->mp_flags = (uint16_t)(flags | P_DIRTY); - np->mp_lower = 0; - np->mp_upper = (indx_t)(mc->mc_txn->mt_env->me_psize - PAGEHDRSZ); - - if (IS_BRANCH(np)) - mc->mc_db->md_branch_pages++; - else if (IS_LEAF(np)) - mc->mc_db->md_leaf_pages++; - else if (IS_OVERFLOW(np)) { - mc->mc_db->md_overflow_pages += num; - np->mp_pages = num; - } - *mp = np; - - return MDBX_SUCCESS; -} - -/* Calculate the size of a leaf node. - * - * The size depends on the environment's page size; if a data item - * is too large it will be put onto an overflow page and the node - * size will only include the key and not the data. Sizes are always - * rounded up to an even number of bytes, to guarantee 2-byte alignment - * of the MDBX_node headers. - * - * [in] env The environment handle. - * [in] key The key for the node. - * [in] data The data for the node. - * - * Returns The number of bytes needed to store the node. */ -static __inline size_t mdbx_leaf_size(MDBX_env *env, MDBX_val *key, - MDBX_val *data) { - size_t sz; - - sz = LEAFSIZE(key, data); - if (sz > env->me_nodemax) { - /* put on overflow page */ - sz -= data->iov_len - sizeof(pgno_t); - } - - return EVEN(sz + sizeof(indx_t)); -} - -/* Calculate the size of a branch node. - * - * The size should depend on the environment's page size but since - * we currently don't support spilling large keys onto overflow - * pages, it's simply the size of the MDBX_node header plus the - * size of the key. Sizes are always rounded up to an even number - * of bytes, to guarantee 2-byte alignment of the MDBX_node headers. - * - * [in] env The environment handle. - * [in] key The key for the node. - * - * Returns The number of bytes needed to store the node. */ -static __inline size_t mdbx_branch_size(MDBX_env *env, MDBX_val *key) { - size_t sz; - - sz = INDXSIZE(key); - if (unlikely(sz > env->me_nodemax)) { - /* put on overflow page */ - /* not implemented */ - mdbx_assert_fail(env, "INDXSIZE(key) <= env->me_nodemax", __FUNCTION__, - __LINE__); - sz -= key->iov_len - sizeof(pgno_t); - } - - return sz + sizeof(indx_t); -} - -/* Add a node to the page pointed to by the cursor. - * Set MDBX_TXN_ERROR on failure. - * - * [in] mc The cursor for this operation. - * [in] indx The index on the page where the new node should be added. - * [in] key The key for the new node. - * [in] data The data for the new node, if any. - * [in] pgno The page number, if adding a branch node. - * [in] flags Flags for the node. - * - * Returns 0 on success, non-zero on failure. Possible errors are: - * - * MDBX_ENOMEM - failed to allocate overflow pages for the node. - * MDBX_PAGE_FULL - there is insufficient room in the page. This error - * should never happen since all callers already calculate - * the page's free space before calling this function. */ -static int mdbx_node_add(MDBX_cursor *mc, unsigned indx, MDBX_val *key, - MDBX_val *data, pgno_t pgno, unsigned flags) { - unsigned i; - size_t node_size = NODESIZE; - intptr_t room; - MDBX_node *node; - MDBX_page *mp = mc->mc_pg[mc->mc_top]; - MDBX_page *ofp = NULL; /* overflow page */ - void *ndata; - DKBUF; - - mdbx_cassert(mc, mp->mp_upper >= mp->mp_lower); - - mdbx_debug("add to %s %spage %" PRIaPGNO " index %i, data size %" PRIuPTR - " key size %" PRIuPTR " [%s]", - IS_LEAF(mp) ? "leaf" : "branch", IS_SUBP(mp) ? "sub-" : "", - mp->mp_pgno, indx, data ? data->iov_len : 0, - key ? key->iov_len : 0, DKEY(key)); - - if (IS_LEAF2(mp)) { - mdbx_cassert(mc, key); - /* Move higher keys up one slot. */ - const int ksize = mc->mc_db->md_xsize; - char *const ptr = LEAF2KEY(mp, indx, ksize); - const int diff = NUMKEYS(mp) - indx; - if (diff > 0) - memmove(ptr + ksize, ptr, diff * ksize); - /* insert new key */ - memcpy(ptr, key->iov_base, ksize); - - /* Just using these for counting */ - mdbx_cassert(mc, UINT16_MAX - mp->mp_lower >= (int)sizeof(indx_t)); - mp->mp_lower += sizeof(indx_t); - mdbx_cassert(mc, mp->mp_upper >= ksize - sizeof(indx_t)); - mp->mp_upper -= (indx_t)(ksize - sizeof(indx_t)); - return MDBX_SUCCESS; - } - - room = (intptr_t)SIZELEFT(mp) - (intptr_t)sizeof(indx_t); - if (key != NULL) - node_size += key->iov_len; - if (IS_LEAF(mp)) { - mdbx_cassert(mc, key && data); - if (unlikely(F_ISSET(flags, F_BIGDATA))) { - /* Data already on overflow page. */ - node_size += sizeof(pgno_t); - } else if (unlikely(node_size + data->iov_len > - mc->mc_txn->mt_env->me_nodemax)) { - pgno_t ovpages = OVPAGES(mc->mc_txn->mt_env, data->iov_len); - int rc; - /* Put data on overflow page. */ - mdbx_debug("data size is %" PRIuPTR ", node would be %" PRIuPTR - ", put data on overflow page", - data->iov_len, node_size + data->iov_len); - node_size = EVEN(node_size + sizeof(pgno_t)); - if ((intptr_t)node_size > room) - goto full; - if ((rc = mdbx_page_new(mc, P_OVERFLOW, ovpages, &ofp))) - return rc; - mdbx_debug("allocated overflow page %" PRIaPGNO "", ofp->mp_pgno); - flags |= F_BIGDATA; - goto update; - } else { - node_size += data->iov_len; - } - } - node_size = EVEN(node_size); - if (unlikely((intptr_t)node_size > room)) - goto full; - -update: - /* Move higher pointers up one slot. */ - for (i = NUMKEYS(mp); i > indx; i--) - mp->mp_ptrs[i] = mp->mp_ptrs[i - 1]; - - /* Adjust free space offsets. */ - size_t ofs = mp->mp_upper - node_size; - mdbx_cassert(mc, ofs >= mp->mp_lower + sizeof(indx_t)); - mdbx_cassert(mc, ofs <= UINT16_MAX); - mp->mp_ptrs[indx] = (uint16_t)ofs; - mp->mp_upper = (uint16_t)ofs; - mp->mp_lower += sizeof(indx_t); - - /* Write the node data. */ - node = NODEPTR(mp, indx); - node->mn_ksize = (key == NULL) ? 0 : (uint16_t)key->iov_len; - node->mn_flags = (uint16_t)flags; - if (IS_LEAF(mp)) - SETDSZ(node, data->iov_len); - else - SETPGNO(node, pgno); - - if (key) - memcpy(NODEKEY(node), key->iov_base, key->iov_len); - - if (IS_LEAF(mp)) { - ndata = NODEDATA(node); - if (unlikely(ofp == NULL)) { - if (unlikely(F_ISSET(flags, F_BIGDATA))) - memcpy(ndata, data->iov_base, sizeof(pgno_t)); - else if (F_ISSET(flags, MDBX_RESERVE)) - data->iov_base = ndata; - else if (likely(ndata != data->iov_base)) - memcpy(ndata, data->iov_base, data->iov_len); - } else { - memcpy(ndata, &ofp->mp_pgno, sizeof(pgno_t)); - ndata = PAGEDATA(ofp); - if (F_ISSET(flags, MDBX_RESERVE)) - data->iov_base = ndata; - else if (likely(ndata != data->iov_base)) - memcpy(ndata, data->iov_base, data->iov_len); - } - } - - return MDBX_SUCCESS; - -full: - mdbx_debug("not enough room in page %" PRIaPGNO ", got %u ptrs", mp->mp_pgno, - NUMKEYS(mp)); - mdbx_debug("upper-lower = %u - %u = %" PRIiPTR "", mp->mp_upper, mp->mp_lower, - room); - mdbx_debug("node size = %" PRIuPTR "", node_size); - mc->mc_txn->mt_flags |= MDBX_TXN_ERROR; - return MDBX_PAGE_FULL; -} - -/* Delete the specified node from a page. - * [in] mc Cursor pointing to the node to delete. - * [in] ksize The size of a node. Only used if the page is - * part of a MDBX_DUPFIXED database. */ -static void mdbx_node_del(MDBX_cursor *mc, size_t ksize) { - MDBX_page *mp = mc->mc_pg[mc->mc_top]; - indx_t indx = mc->mc_ki[mc->mc_top]; - indx_t i, j, numkeys, ptr; - MDBX_node *node; - char *base; - - mdbx_debug("delete node %u on %s page %" PRIaPGNO "", indx, - IS_LEAF(mp) ? "leaf" : "branch", mp->mp_pgno); - numkeys = NUMKEYS(mp); - mdbx_cassert(mc, indx < numkeys); - - if (IS_LEAF2(mp)) { - mdbx_cassert(mc, ksize >= sizeof(indx_t)); - unsigned diff = numkeys - 1 - indx; - base = LEAF2KEY(mp, indx, ksize); - if (diff) - memmove(base, base + ksize, diff * ksize); - mdbx_cassert(mc, mp->mp_lower >= sizeof(indx_t)); - mp->mp_lower -= sizeof(indx_t); - mdbx_cassert(mc, - (size_t)UINT16_MAX - mp->mp_upper >= ksize - sizeof(indx_t)); - mp->mp_upper += (indx_t)(ksize - sizeof(indx_t)); - return; - } - - node = NODEPTR(mp, indx); - size_t sz = NODESIZE + node->mn_ksize; - if (IS_LEAF(mp)) { - if (F_ISSET(node->mn_flags, F_BIGDATA)) - sz += sizeof(pgno_t); - else - sz += NODEDSZ(node); - } - sz = EVEN(sz); - - ptr = mp->mp_ptrs[indx]; - for (i = j = 0; i < numkeys; i++) { - if (i != indx) { - mp->mp_ptrs[j] = mp->mp_ptrs[i]; - if (mp->mp_ptrs[i] < ptr) { - mdbx_cassert(mc, (size_t)UINT16_MAX - mp->mp_ptrs[j] >= sz); - mp->mp_ptrs[j] += (indx_t)sz; - } - j++; - } - } - - base = (char *)mp + mp->mp_upper + PAGEHDRSZ; - memmove(base + sz, base, ptr - mp->mp_upper); - - mdbx_cassert(mc, mp->mp_lower >= sizeof(indx_t)); - mp->mp_lower -= sizeof(indx_t); - mdbx_cassert(mc, (size_t)UINT16_MAX - mp->mp_upper >= sz); - mp->mp_upper += (indx_t)sz; -} - -/* Compact the main page after deleting a node on a subpage. - * [in] mp The main page to operate on. - * [in] indx The index of the subpage on the main page. */ -static void mdbx_node_shrink(MDBX_page *mp, unsigned indx) { - MDBX_node *node; - MDBX_page *sp, *xp; - char *base; - size_t nsize, delta, len, ptr; - int i; - - node = NODEPTR(mp, indx); - sp = (MDBX_page *)NODEDATA(node); - delta = SIZELEFT(sp); - nsize = NODEDSZ(node) - delta; - - /* Prepare to shift upward, set len = length(subpage part to shift) */ - if (IS_LEAF2(sp)) { - len = nsize; - if (nsize & 1) - return; /* do not make the node uneven-sized */ - } else { - xp = (MDBX_page *)((char *)sp + delta); /* destination subpage */ - for (i = NUMKEYS(sp); --i >= 0;) { - assert(sp->mp_ptrs[i] >= delta); - xp->mp_ptrs[i] = (indx_t)(sp->mp_ptrs[i] - delta); - } - len = PAGEHDRSZ; - } - sp->mp_upper = sp->mp_lower; - sp->mp_pgno = mp->mp_pgno; - SETDSZ(node, nsize); - - /* Shift <lower nodes...initial part of subpage> upward */ - base = (char *)mp + mp->mp_upper + PAGEHDRSZ; - memmove(base + delta, base, (char *)sp + len - base); - - ptr = mp->mp_ptrs[indx]; - for (i = NUMKEYS(mp); --i >= 0;) { - if (mp->mp_ptrs[i] <= ptr) { - assert((size_t)UINT16_MAX - mp->mp_ptrs[i] >= delta); - mp->mp_ptrs[i] += (indx_t)delta; - } - } - assert((size_t)UINT16_MAX - mp->mp_upper >= delta); - mp->mp_upper += (indx_t)delta; -} - -/* Initial setup of a sorted-dups cursor. - * - * Sorted duplicates are implemented as a sub-database for the given key. - * The duplicate data items are actually keys of the sub-database. - * Operations on the duplicate data items are performed using a sub-cursor - * initialized when the sub-database is first accessed. This function does - * the preliminary setup of the sub-cursor, filling in the fields that - * depend only on the parent DB. - * - * [in] mc The main cursor whose sorted-dups cursor is to be initialized. */ -static int mdbx_xcursor_init0(MDBX_cursor *mc) { - MDBX_xcursor *mx = mc->mc_xcursor; - if (unlikely(mx == nullptr)) - return MDBX_CORRUPTED; - - mx->mx_cursor.mc_xcursor = NULL; - mx->mx_cursor.mc_txn = mc->mc_txn; - mx->mx_cursor.mc_db = &mx->mx_db; - mx->mx_cursor.mc_dbx = &mx->mx_dbx; - mx->mx_cursor.mc_dbi = mc->mc_dbi; - mx->mx_cursor.mc_dbflag = &mx->mx_dbflag; - mx->mx_cursor.mc_snum = 0; - mx->mx_cursor.mc_top = 0; - mx->mx_cursor.mc_flags = C_SUB; - mx->mx_dbx.md_name.iov_len = 0; - mx->mx_dbx.md_name.iov_base = NULL; - mx->mx_dbx.md_cmp = mc->mc_dbx->md_dcmp; - mx->mx_dbx.md_dcmp = NULL; - return MDBX_SUCCESS; -} - -/* Final setup of a sorted-dups cursor. - * Sets up the fields that depend on the data from the main cursor. - * [in] mc The main cursor whose sorted-dups cursor is to be initialized. - * [in] node The data containing the MDBX_db record for the sorted-dup database. - */ -static int mdbx_xcursor_init1(MDBX_cursor *mc, MDBX_node *node) { - MDBX_xcursor *mx = mc->mc_xcursor; - if (unlikely(mx == nullptr)) - return MDBX_CORRUPTED; - - mdbx_cassert(mc, mc->mc_txn->mt_txnid >= mc->mc_txn->mt_env->me_oldest[0]); - if (node->mn_flags & F_SUBDATA) { - memcpy(&mx->mx_db, NODEDATA(node), sizeof(MDBX_db)); - mx->mx_cursor.mc_pg[0] = 0; - mx->mx_cursor.mc_snum = 0; - mx->mx_cursor.mc_top = 0; - mx->mx_cursor.mc_flags = C_SUB; - } else { - MDBX_page *fp = NODEDATA(node); - mx->mx_db.md_xsize = 0; - mx->mx_db.md_flags = 0; - mx->mx_db.md_depth = 1; - mx->mx_db.md_branch_pages = 0; - mx->mx_db.md_leaf_pages = 1; - mx->mx_db.md_overflow_pages = 0; - mx->mx_db.md_entries = NUMKEYS(fp); - mx->mx_db.md_root = fp->mp_pgno; - mx->mx_cursor.mc_snum = 1; - mx->mx_cursor.mc_top = 0; - mx->mx_cursor.mc_flags = C_INITIALIZED | C_SUB; - mx->mx_cursor.mc_pg[0] = fp; - mx->mx_cursor.mc_ki[0] = 0; - if (mc->mc_db->md_flags & MDBX_DUPFIXED) { - mx->mx_db.md_flags = MDBX_DUPFIXED; - mx->mx_db.md_xsize = fp->mp_leaf2_ksize; - if (mc->mc_db->md_flags & MDBX_INTEGERDUP) - mx->mx_db.md_flags |= MDBX_INTEGERKEY; - } - } - mdbx_debug("Sub-db -%u root page %" PRIaPGNO "", mx->mx_cursor.mc_dbi, - mx->mx_db.md_root); - mx->mx_dbflag = DB_VALID | DB_USRVALID | DB_DUPDATA; - /* FIXME: #if UINT_MAX < SIZE_MAX - if (mx->mx_dbx.md_cmp == mdbx_cmp_int && mx->mx_db.md_pad == - sizeof(size_t)) - mx->mx_dbx.md_cmp = mdbx_cmp_clong; - #endif */ - - return MDBX_SUCCESS; -} - -/* Fixup a sorted-dups cursor due to underlying update. - * Sets up some fields that depend on the data from the main cursor. - * Almost the same as init1, but skips initialization steps if the - * xcursor had already been used. - * [in] mc The main cursor whose sorted-dups cursor is to be fixed up. - * [in] src_mx The xcursor of an up-to-date cursor. - * [in] new_dupdata True if converting from a non-F_DUPDATA item. */ -static int mdbx_xcursor_init2(MDBX_cursor *mc, MDBX_xcursor *src_mx, - int new_dupdata) { - MDBX_xcursor *mx = mc->mc_xcursor; - if (unlikely(mx == nullptr)) - return MDBX_CORRUPTED; - - mdbx_cassert(mc, mc->mc_txn->mt_txnid >= mc->mc_txn->mt_env->me_oldest[0]); - if (new_dupdata) { - mx->mx_cursor.mc_snum = 1; - mx->mx_cursor.mc_top = 0; - mx->mx_cursor.mc_flags |= C_INITIALIZED; - mx->mx_cursor.mc_ki[0] = 0; - mx->mx_dbflag = DB_VALID | DB_USRVALID | DB_DUPDATA; - mx->mx_dbx.md_cmp = src_mx->mx_dbx.md_cmp; - } else if (!(mx->mx_cursor.mc_flags & C_INITIALIZED)) { - return MDBX_SUCCESS; - } - mx->mx_db = src_mx->mx_db; - mx->mx_cursor.mc_pg[0] = src_mx->mx_cursor.mc_pg[0]; - mdbx_debug("Sub-db -%u root page %" PRIaPGNO "", mx->mx_cursor.mc_dbi, - mx->mx_db.md_root); - return MDBX_SUCCESS; -} - -/* Initialize a cursor for a given transaction and database. */ -static int mdbx_cursor_init(MDBX_cursor *mc, MDBX_txn *txn, MDBX_dbi dbi, - MDBX_xcursor *mx) { - mc->mc_signature = MDBX_MC_SIGNATURE; - mc->mc_next = NULL; - mc->mc_backup = NULL; - mc->mc_dbi = dbi; - mc->mc_txn = txn; - mc->mc_db = &txn->mt_dbs[dbi]; - mc->mc_dbx = &txn->mt_dbxs[dbi]; - mc->mc_dbflag = &txn->mt_dbflags[dbi]; - mc->mc_snum = 0; - mc->mc_top = 0; - mc->mc_pg[0] = 0; - mc->mc_flags = 0; - mc->mc_ki[0] = 0; - mc->mc_xcursor = NULL; - - if (txn->mt_dbs[dbi].md_flags & MDBX_DUPSORT) { - mdbx_tassert(txn, mx != NULL); - mx->mx_cursor.mc_signature = MDBX_MC_SIGNATURE; - mc->mc_xcursor = mx; - int rc = mdbx_xcursor_init0(mc); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - } - - mdbx_cassert(mc, mc->mc_txn->mt_txnid >= mc->mc_txn->mt_env->me_oldest[0]); - int rc = MDBX_SUCCESS; - if (unlikely(*mc->mc_dbflag & DB_STALE)) { - rc = mdbx_page_search(mc, NULL, MDBX_PS_ROOTONLY); - rc = (rc != MDBX_NOTFOUND) ? rc : MDBX_SUCCESS; - } - return rc; -} - -int mdbx_cursor_open(MDBX_txn *txn, MDBX_dbi dbi, MDBX_cursor **ret) { - MDBX_cursor *mc; - size_t size = sizeof(MDBX_cursor); - - if (unlikely(!ret || !txn)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - if (unlikely(!TXN_DBI_EXIST(txn, dbi, DB_VALID))) - return MDBX_EINVAL; - - if (unlikely(txn->mt_flags & MDBX_TXN_BLOCKED)) - return MDBX_BAD_TXN; - - if (unlikely(dbi == FREE_DBI && !F_ISSET(txn->mt_flags, MDBX_TXN_RDONLY))) - return MDBX_EINVAL; - - if (txn->mt_dbs[dbi].md_flags & MDBX_DUPSORT) - size += sizeof(MDBX_xcursor); - - if (likely((mc = malloc(size)) != NULL)) { - int rc = mdbx_cursor_init(mc, txn, dbi, (MDBX_xcursor *)(mc + 1)); - if (unlikely(rc != MDBX_SUCCESS)) { - free(mc); - return rc; - } - if (txn->mt_cursors) { - mc->mc_next = txn->mt_cursors[dbi]; - txn->mt_cursors[dbi] = mc; - mc->mc_flags |= C_UNTRACK; - } - } else { - return MDBX_ENOMEM; - } - - *ret = mc; - return MDBX_SUCCESS; -} - -int mdbx_cursor_renew(MDBX_txn *txn, MDBX_cursor *mc) { - if (unlikely(!mc || !txn)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner != mdbx_thread_self())) - return txn->mt_owner ? MDBX_THREAD_MISMATCH : MDBX_BAD_TXN; - - if (unlikely(txn->mt_flags & (MDBX_TXN_FINISHED | MDBX_TXN_ERROR))) - return MDBX_BAD_TXN; - - if (unlikely(mc->mc_signature != MDBX_MC_SIGNATURE && - mc->mc_signature != MDBX_MC_READY4CLOSE)) - return MDBX_EINVAL; - - if (unlikely(!TXN_DBI_EXIST(txn, mc->mc_dbi, DB_VALID))) - return MDBX_EINVAL; - - if (unlikely(mc->mc_backup)) - return MDBX_EINVAL; - - if (unlikely((mc->mc_flags & C_UNTRACK) || txn->mt_cursors)) { - MDBX_cursor **prev = &mc->mc_txn->mt_cursors[mc->mc_dbi]; - while (*prev && *prev != mc) - prev = &(*prev)->mc_next; - if (*prev == mc) - *prev = mc->mc_next; - mc->mc_signature = MDBX_MC_READY4CLOSE; - } - - if (unlikely(txn->mt_flags & MDBX_TXN_BLOCKED)) - return MDBX_BAD_TXN; - - return mdbx_cursor_init(mc, txn, mc->mc_dbi, mc->mc_xcursor); -} - -/* Return the count of duplicate data items for the current key */ -int mdbx_cursor_count(MDBX_cursor *mc, size_t *countp) { - if (unlikely(mc == NULL || countp == NULL)) - return MDBX_EINVAL; - - if (unlikely(mc->mc_signature != MDBX_MC_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(mc->mc_txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - if (unlikely(mc->mc_txn->mt_flags & MDBX_TXN_BLOCKED)) - return MDBX_BAD_TXN; - - if (unlikely(!(mc->mc_flags & C_INITIALIZED))) - return MDBX_EINVAL; - - if (!mc->mc_snum) { - *countp = 0; - return MDBX_NOTFOUND; - } - - MDBX_page *mp = mc->mc_pg[mc->mc_top]; - if ((mc->mc_flags & C_EOF) && mc->mc_ki[mc->mc_top] >= NUMKEYS(mp)) { - *countp = 0; - return MDBX_NOTFOUND; - } - - *countp = 1; - if (mc->mc_xcursor != NULL) { - MDBX_node *leaf = NODEPTR(mp, mc->mc_ki[mc->mc_top]); - if (F_ISSET(leaf->mn_flags, F_DUPDATA)) { - mdbx_cassert(mc, mc->mc_xcursor && (mc->mc_xcursor->mx_cursor.mc_flags & - C_INITIALIZED)); - *countp = unlikely(mc->mc_xcursor->mx_db.md_entries > SIZE_MAX) - ? SIZE_MAX - : (size_t)mc->mc_xcursor->mx_db.md_entries; - } - } - return MDBX_SUCCESS; -} - -void mdbx_cursor_close(MDBX_cursor *mc) { - if (mc) { - mdbx_ensure(NULL, mc->mc_signature == MDBX_MC_SIGNATURE || - mc->mc_signature == MDBX_MC_READY4CLOSE); - if (!mc->mc_backup) { - /* Remove from txn, if tracked. - * A read-only txn (!C_UNTRACK) may have been freed already, - * so do not peek inside it. Only write txns track cursors. */ - if ((mc->mc_flags & C_UNTRACK) && mc->mc_txn->mt_cursors) { - MDBX_cursor **prev = &mc->mc_txn->mt_cursors[mc->mc_dbi]; - while (*prev && *prev != mc) - prev = &(*prev)->mc_next; - if (*prev == mc) - *prev = mc->mc_next; - } - mc->mc_signature = 0; - free(mc); - } else { - /* cursor closed before nested txn ends */ - mdbx_cassert(mc, mc->mc_signature == MDBX_MC_SIGNATURE); - mc->mc_signature = MDBX_MC_WAIT4EOT; - } - } -} - -MDBX_txn *mdbx_cursor_txn(MDBX_cursor *mc) { - if (unlikely(!mc || mc->mc_signature != MDBX_MC_SIGNATURE)) - return NULL; - MDBX_txn *txn = mc->mc_txn; - if (unlikely(!txn || txn->mt_signature != MDBX_MT_SIGNATURE)) - return NULL; - if (unlikely(txn->mt_flags & MDBX_TXN_FINISHED)) - return NULL; - return txn; -} - -MDBX_dbi mdbx_cursor_dbi(MDBX_cursor *mc) { - if (unlikely(!mc || mc->mc_signature != MDBX_MC_SIGNATURE)) - return UINT_MAX; - return mc->mc_dbi; -} - -/* Replace the key for a branch node with a new key. - * Set MDBX_TXN_ERROR on failure. - * [in] mc Cursor pointing to the node to operate on. - * [in] key The new key to use. - * Returns 0 on success, non-zero on failure. */ -static int mdbx_update_key(MDBX_cursor *mc, MDBX_val *key) { - MDBX_page *mp; - MDBX_node *node; - char *base; - size_t len; - int delta, ksize, oksize; - indx_t ptr, i, numkeys, indx; - DKBUF; - - indx = mc->mc_ki[mc->mc_top]; - mp = mc->mc_pg[mc->mc_top]; - node = NODEPTR(mp, indx); - ptr = mp->mp_ptrs[indx]; - if (MDBX_DEBUG) { - MDBX_val k2; - char kbuf2[DKBUF_MAXKEYSIZE * 2 + 1]; - k2.iov_base = NODEKEY(node); - k2.iov_len = node->mn_ksize; - mdbx_debug("update key %u (ofs %u) [%s] to [%s] on page %" PRIaPGNO "", - indx, ptr, mdbx_dkey(&k2, kbuf2, sizeof(kbuf2)), DKEY(key), - mp->mp_pgno); - } - - /* Sizes must be 2-byte aligned. */ - ksize = EVEN(key->iov_len); - oksize = EVEN(node->mn_ksize); - delta = ksize - oksize; - - /* Shift node contents if EVEN(key length) changed. */ - if (delta) { - if (delta > 0 && SIZELEFT(mp) < delta) { - pgno_t pgno; - /* not enough space left, do a delete and split */ - mdbx_debug("Not enough room, delta = %d, splitting...", delta); - pgno = NODEPGNO(node); - mdbx_node_del(mc, 0); - return mdbx_page_split(mc, key, NULL, pgno, MDBX_SPLIT_REPLACE); - } - - numkeys = NUMKEYS(mp); - for (i = 0; i < numkeys; i++) { - if (mp->mp_ptrs[i] <= ptr) { - mdbx_cassert(mc, mp->mp_ptrs[i] >= delta); - mp->mp_ptrs[i] -= (indx_t)delta; - } - } - - base = (char *)mp + mp->mp_upper + PAGEHDRSZ; - len = ptr - mp->mp_upper + NODESIZE; - memmove(base - delta, base, len); - mdbx_cassert(mc, mp->mp_upper >= delta); - mp->mp_upper -= (indx_t)delta; - - node = NODEPTR(mp, indx); - } - - /* But even if no shift was needed, update ksize */ - if (node->mn_ksize != key->iov_len) - node->mn_ksize = (uint16_t)key->iov_len; - - if (key->iov_len) - memcpy(NODEKEY(node), key->iov_base, key->iov_len); - - return MDBX_SUCCESS; -} - -static void mdbx_cursor_copy(const MDBX_cursor *csrc, MDBX_cursor *cdst); - -/* Perform act while tracking temporary cursor mn */ -#define WITH_CURSOR_TRACKING(mn, act) \ - do { \ - mdbx_cassert(&(mn), \ - mn.mc_txn->mt_cursors != NULL /* must be not rdonly txt */); \ - MDBX_cursor mc_dummy, *tracked, \ - **tp = &(mn).mc_txn->mt_cursors[mn.mc_dbi]; \ - if ((mn).mc_flags & C_SUB) { \ - mc_dummy.mc_flags = C_INITIALIZED; \ - mc_dummy.mc_xcursor = (MDBX_xcursor *)&(mn); \ - tracked = &mc_dummy; \ - } else { \ - tracked = &(mn); \ - } \ - tracked->mc_next = *tp; \ - *tp = tracked; \ - { act; } \ - *tp = tracked->mc_next; \ - } while (0) - -/* Move a node from csrc to cdst. */ -static int mdbx_node_move(MDBX_cursor *csrc, MDBX_cursor *cdst, int fromleft) { - MDBX_node *srcnode; - MDBX_val key, data; - pgno_t srcpg; - MDBX_cursor mn; - int rc; - unsigned flags; - - DKBUF; - - /* Mark src and dst as dirty. */ - if (unlikely((rc = mdbx_page_touch(csrc)) || (rc = mdbx_page_touch(cdst)))) - return rc; - - if (IS_LEAF2(csrc->mc_pg[csrc->mc_top])) { - key.iov_len = csrc->mc_db->md_xsize; - key.iov_base = LEAF2KEY(csrc->mc_pg[csrc->mc_top], - csrc->mc_ki[csrc->mc_top], key.iov_len); - data.iov_len = 0; - data.iov_base = NULL; - srcpg = 0; - flags = 0; - } else { - srcnode = NODEPTR(csrc->mc_pg[csrc->mc_top], csrc->mc_ki[csrc->mc_top]); - mdbx_cassert(csrc, !((size_t)srcnode & 1)); - srcpg = NODEPGNO(srcnode); - flags = srcnode->mn_flags; - if (csrc->mc_ki[csrc->mc_top] == 0 && - IS_BRANCH(csrc->mc_pg[csrc->mc_top])) { - unsigned snum = csrc->mc_snum; - MDBX_node *s2; - /* must find the lowest key below src */ - rc = mdbx_page_search_lowest(csrc); - if (unlikely(rc)) - return rc; - if (IS_LEAF2(csrc->mc_pg[csrc->mc_top])) { - key.iov_len = csrc->mc_db->md_xsize; - key.iov_base = LEAF2KEY(csrc->mc_pg[csrc->mc_top], 0, key.iov_len); - } else { - s2 = NODEPTR(csrc->mc_pg[csrc->mc_top], 0); - key.iov_len = NODEKSZ(s2); - key.iov_base = NODEKEY(s2); - } - mdbx_cassert(csrc, snum >= 1 && snum <= UINT16_MAX); - csrc->mc_snum = (uint16_t)snum--; - csrc->mc_top = (uint16_t)snum; - } else { - key.iov_len = NODEKSZ(srcnode); - key.iov_base = NODEKEY(srcnode); - } - data.iov_len = NODEDSZ(srcnode); - data.iov_base = NODEDATA(srcnode); - } - mn.mc_xcursor = NULL; - if (IS_BRANCH(cdst->mc_pg[cdst->mc_top]) && cdst->mc_ki[cdst->mc_top] == 0) { - unsigned snum = cdst->mc_snum; - MDBX_node *s2; - MDBX_val bkey; - /* must find the lowest key below dst */ - mdbx_cursor_copy(cdst, &mn); - rc = mdbx_page_search_lowest(&mn); - if (unlikely(rc)) - return rc; - if (IS_LEAF2(mn.mc_pg[mn.mc_top])) { - bkey.iov_len = mn.mc_db->md_xsize; - bkey.iov_base = LEAF2KEY(mn.mc_pg[mn.mc_top], 0, bkey.iov_len); - } else { - s2 = NODEPTR(mn.mc_pg[mn.mc_top], 0); - bkey.iov_len = NODEKSZ(s2); - bkey.iov_base = NODEKEY(s2); - } - mdbx_cassert(csrc, snum >= 1 && snum <= UINT16_MAX); - mn.mc_snum = (uint16_t)snum--; - mn.mc_top = (uint16_t)snum; - mn.mc_ki[snum] = 0; - rc = mdbx_update_key(&mn, &bkey); - if (unlikely(rc)) - return rc; - } - - mdbx_debug("moving %s node %u [%s] on page %" PRIaPGNO - " to node %u on page %" PRIaPGNO "", - IS_LEAF(csrc->mc_pg[csrc->mc_top]) ? "leaf" : "branch", - csrc->mc_ki[csrc->mc_top], DKEY(&key), - csrc->mc_pg[csrc->mc_top]->mp_pgno, cdst->mc_ki[cdst->mc_top], - cdst->mc_pg[cdst->mc_top]->mp_pgno); - - /* Add the node to the destination page. */ - rc = - mdbx_node_add(cdst, cdst->mc_ki[cdst->mc_top], &key, &data, srcpg, flags); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - - /* Delete the node from the source page. */ - mdbx_node_del(csrc, key.iov_len); - - { - /* Adjust other cursors pointing to mp */ - MDBX_cursor *m2, *m3; - MDBX_dbi dbi = csrc->mc_dbi; - MDBX_page *mpd, *mps; - - mps = csrc->mc_pg[csrc->mc_top]; - /* If we're adding on the left, bump others up */ - if (fromleft) { - mpd = cdst->mc_pg[csrc->mc_top]; - for (m2 = csrc->mc_txn->mt_cursors[dbi]; m2; m2 = m2->mc_next) { - if (csrc->mc_flags & C_SUB) - m3 = &m2->mc_xcursor->mx_cursor; - else - m3 = m2; - if (!(m3->mc_flags & C_INITIALIZED) || m3->mc_top < csrc->mc_top) - continue; - if (m3 != cdst && m3->mc_pg[csrc->mc_top] == mpd && - m3->mc_ki[csrc->mc_top] >= cdst->mc_ki[csrc->mc_top]) { - m3->mc_ki[csrc->mc_top]++; - } - if (m3 != csrc && m3->mc_pg[csrc->mc_top] == mps && - m3->mc_ki[csrc->mc_top] == csrc->mc_ki[csrc->mc_top]) { - m3->mc_pg[csrc->mc_top] = cdst->mc_pg[cdst->mc_top]; - m3->mc_ki[csrc->mc_top] = cdst->mc_ki[cdst->mc_top]; - m3->mc_ki[csrc->mc_top - 1]++; - } - if (XCURSOR_INITED(m3) && IS_LEAF(mps)) - XCURSOR_REFRESH(m3, m3->mc_pg[csrc->mc_top], m3->mc_ki[csrc->mc_top]); - } - } else - /* Adding on the right, bump others down */ - { - for (m2 = csrc->mc_txn->mt_cursors[dbi]; m2; m2 = m2->mc_next) { - if (csrc->mc_flags & C_SUB) - m3 = &m2->mc_xcursor->mx_cursor; - else - m3 = m2; - if (m3 == csrc) - continue; - if (!(m3->mc_flags & C_INITIALIZED) || m3->mc_top < csrc->mc_top) - continue; - if (m3->mc_pg[csrc->mc_top] == mps) { - if (!m3->mc_ki[csrc->mc_top]) { - m3->mc_pg[csrc->mc_top] = cdst->mc_pg[cdst->mc_top]; - m3->mc_ki[csrc->mc_top] = cdst->mc_ki[cdst->mc_top]; - m3->mc_ki[csrc->mc_top - 1]--; - } else { - m3->mc_ki[csrc->mc_top]--; - } - if (XCURSOR_INITED(m3) && IS_LEAF(mps)) - XCURSOR_REFRESH(m3, m3->mc_pg[csrc->mc_top], - m3->mc_ki[csrc->mc_top]); - } - } - } - } - - /* Update the parent separators. */ - if (csrc->mc_ki[csrc->mc_top] == 0) { - if (csrc->mc_ki[csrc->mc_top - 1] != 0) { - if (IS_LEAF2(csrc->mc_pg[csrc->mc_top])) { - key.iov_base = LEAF2KEY(csrc->mc_pg[csrc->mc_top], 0, key.iov_len); - } else { - srcnode = NODEPTR(csrc->mc_pg[csrc->mc_top], 0); - key.iov_len = NODEKSZ(srcnode); - key.iov_base = NODEKEY(srcnode); - } - mdbx_debug("update separator for source page %" PRIaPGNO " to [%s]", - csrc->mc_pg[csrc->mc_top]->mp_pgno, DKEY(&key)); - mdbx_cursor_copy(csrc, &mn); - mn.mc_snum--; - mn.mc_top--; - /* We want mdbx_rebalance to find mn when doing fixups */ - WITH_CURSOR_TRACKING(mn, rc = mdbx_update_key(&mn, &key)); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - } - if (IS_BRANCH(csrc->mc_pg[csrc->mc_top])) { - MDBX_val nullkey; - indx_t ix = csrc->mc_ki[csrc->mc_top]; - nullkey.iov_len = 0; - csrc->mc_ki[csrc->mc_top] = 0; - rc = mdbx_update_key(csrc, &nullkey); - csrc->mc_ki[csrc->mc_top] = ix; - mdbx_cassert(csrc, rc == MDBX_SUCCESS); - } - } - - if (cdst->mc_ki[cdst->mc_top] == 0) { - if (cdst->mc_ki[cdst->mc_top - 1] != 0) { - if (IS_LEAF2(csrc->mc_pg[csrc->mc_top])) { - key.iov_base = LEAF2KEY(cdst->mc_pg[cdst->mc_top], 0, key.iov_len); - } else { - srcnode = NODEPTR(cdst->mc_pg[cdst->mc_top], 0); - key.iov_len = NODEKSZ(srcnode); - key.iov_base = NODEKEY(srcnode); - } - mdbx_debug("update separator for destination page %" PRIaPGNO " to [%s]", - cdst->mc_pg[cdst->mc_top]->mp_pgno, DKEY(&key)); - mdbx_cursor_copy(cdst, &mn); - mn.mc_snum--; - mn.mc_top--; - /* We want mdbx_rebalance to find mn when doing fixups */ - WITH_CURSOR_TRACKING(mn, rc = mdbx_update_key(&mn, &key)); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - } - if (IS_BRANCH(cdst->mc_pg[cdst->mc_top])) { - MDBX_val nullkey; - indx_t ix = cdst->mc_ki[cdst->mc_top]; - nullkey.iov_len = 0; - cdst->mc_ki[cdst->mc_top] = 0; - rc = mdbx_update_key(cdst, &nullkey); - cdst->mc_ki[cdst->mc_top] = ix; - mdbx_cassert(cdst, rc == MDBX_SUCCESS); - } - } - - return MDBX_SUCCESS; -} - -/* Merge one page into another. - * - * The nodes from the page pointed to by csrc will be copied to the page - * pointed to by cdst and then the csrc page will be freed. - * - * [in] csrc Cursor pointing to the source page. - * [in] cdst Cursor pointing to the destination page. - * - * Returns 0 on success, non-zero on failure. */ -static int mdbx_page_merge(MDBX_cursor *csrc, MDBX_cursor *cdst) { - MDBX_page *psrc, *pdst; - MDBX_node *srcnode; - MDBX_val key, data; - unsigned nkeys; - int rc; - unsigned i, j; - - psrc = csrc->mc_pg[csrc->mc_top]; - pdst = cdst->mc_pg[cdst->mc_top]; - - mdbx_debug("merging page %" PRIaPGNO " into %" PRIaPGNO "", psrc->mp_pgno, - pdst->mp_pgno); - - mdbx_cassert(csrc, csrc->mc_snum > 1); /* can't merge root page */ - mdbx_cassert(csrc, cdst->mc_snum > 1); - - /* Mark dst as dirty. */ - if (unlikely(rc = mdbx_page_touch(cdst))) - return rc; - - /* get dst page again now that we've touched it. */ - pdst = cdst->mc_pg[cdst->mc_top]; - - /* Move all nodes from src to dst. */ - j = nkeys = NUMKEYS(pdst); - if (IS_LEAF2(psrc)) { - key.iov_len = csrc->mc_db->md_xsize; - key.iov_base = PAGEDATA(psrc); - for (i = 0; i < NUMKEYS(psrc); i++, j++) { - rc = mdbx_node_add(cdst, j, &key, NULL, 0, 0); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - key.iov_base = (char *)key.iov_base + key.iov_len; - } - } else { - for (i = 0; i < NUMKEYS(psrc); i++, j++) { - srcnode = NODEPTR(psrc, i); - if (i == 0 && IS_BRANCH(psrc)) { - MDBX_cursor mn; - MDBX_node *s2; - mdbx_cursor_copy(csrc, &mn); - mn.mc_xcursor = NULL; - /* must find the lowest key below src */ - rc = mdbx_page_search_lowest(&mn); - if (unlikely(rc)) - return rc; - if (IS_LEAF2(mn.mc_pg[mn.mc_top])) { - key.iov_len = mn.mc_db->md_xsize; - key.iov_base = LEAF2KEY(mn.mc_pg[mn.mc_top], 0, key.iov_len); - } else { - s2 = NODEPTR(mn.mc_pg[mn.mc_top], 0); - key.iov_len = NODEKSZ(s2); - key.iov_base = NODEKEY(s2); - } - } else { - key.iov_len = srcnode->mn_ksize; - key.iov_base = NODEKEY(srcnode); - } - - data.iov_len = NODEDSZ(srcnode); - data.iov_base = NODEDATA(srcnode); - rc = mdbx_node_add(cdst, j, &key, &data, NODEPGNO(srcnode), - srcnode->mn_flags); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - } - } - - mdbx_debug("dst page %" PRIaPGNO " now has %u keys (%.1f%% filled)", - pdst->mp_pgno, NUMKEYS(pdst), - (float)PAGEFILL(cdst->mc_txn->mt_env, pdst) / 10); - - /* Unlink the src page from parent and add to free list. */ - csrc->mc_top--; - mdbx_node_del(csrc, 0); - if (csrc->mc_ki[csrc->mc_top] == 0) { - key.iov_len = 0; - rc = mdbx_update_key(csrc, &key); - if (unlikely(rc)) { - csrc->mc_top++; - return rc; - } - } - csrc->mc_top++; - - psrc = csrc->mc_pg[csrc->mc_top]; - /* If not operating on FreeDB, allow this page to be reused - * in this txn. Otherwise just add to free list. */ - rc = mdbx_page_loose(csrc, psrc); - if (unlikely(rc)) - return rc; - - if (IS_LEAF(psrc)) - csrc->mc_db->md_leaf_pages--; - else - csrc->mc_db->md_branch_pages--; - { - /* Adjust other cursors pointing to mp */ - MDBX_cursor *m2, *m3; - MDBX_dbi dbi = csrc->mc_dbi; - unsigned top = csrc->mc_top; - - for (m2 = csrc->mc_txn->mt_cursors[dbi]; m2; m2 = m2->mc_next) { - if (csrc->mc_flags & C_SUB) - m3 = &m2->mc_xcursor->mx_cursor; - else - m3 = m2; - if (m3 == csrc) - continue; - if (m3->mc_snum < csrc->mc_snum) - continue; - if (m3->mc_pg[top] == psrc) { - m3->mc_pg[top] = pdst; - mdbx_cassert(m3, nkeys + m3->mc_ki[top] <= UINT16_MAX); - m3->mc_ki[top] += (indx_t)nkeys; - m3->mc_ki[top - 1] = cdst->mc_ki[top - 1]; - } else if (m3->mc_pg[top - 1] == csrc->mc_pg[top - 1] && - m3->mc_ki[top - 1] > csrc->mc_ki[top - 1]) { - m3->mc_ki[top - 1]--; - } - if (XCURSOR_INITED(m3) && IS_LEAF(psrc)) - XCURSOR_REFRESH(m3, m3->mc_pg[top], m3->mc_ki[top]); - } - } - { - unsigned snum = cdst->mc_snum; - uint16_t depth = cdst->mc_db->md_depth; - mdbx_cursor_pop(cdst); - rc = mdbx_rebalance(cdst); - if (unlikely(rc)) - return rc; - mdbx_cassert(cdst, cdst->mc_db->md_entries > 0); - - /* Did the tree height change? */ - if (depth != cdst->mc_db->md_depth) - snum += cdst->mc_db->md_depth - depth; - mdbx_cassert(cdst, snum >= 1 && snum <= UINT16_MAX); - cdst->mc_snum = (uint16_t)snum; - cdst->mc_top = (uint16_t)(snum - 1); - } - return MDBX_SUCCESS; -} - -/* Copy the contents of a cursor. - * [in] csrc The cursor to copy from. - * [out] cdst The cursor to copy to. */ -static void mdbx_cursor_copy(const MDBX_cursor *csrc, MDBX_cursor *cdst) { - unsigned i; - - mdbx_cassert(csrc, - csrc->mc_txn->mt_txnid >= csrc->mc_txn->mt_env->me_oldest[0]); - cdst->mc_txn = csrc->mc_txn; - cdst->mc_dbi = csrc->mc_dbi; - cdst->mc_db = csrc->mc_db; - cdst->mc_dbx = csrc->mc_dbx; - cdst->mc_snum = csrc->mc_snum; - cdst->mc_top = csrc->mc_top; - cdst->mc_flags = csrc->mc_flags; - - for (i = 0; i < csrc->mc_snum; i++) { - cdst->mc_pg[i] = csrc->mc_pg[i]; - cdst->mc_ki[i] = csrc->mc_ki[i]; - } -} - -/* Rebalance the tree after a delete operation. - * [in] mc Cursor pointing to the page where rebalancing should begin. - * Returns 0 on success, non-zero on failure. */ -static int mdbx_rebalance(MDBX_cursor *mc) { - MDBX_node *node; - int rc, fromleft; - unsigned ptop, minkeys, thresh; - MDBX_cursor mn; - indx_t oldki; - - if (IS_BRANCH(mc->mc_pg[mc->mc_top])) { - minkeys = 2; - thresh = 1; - } else { - minkeys = 1; - thresh = FILL_THRESHOLD; - } - mdbx_debug("rebalancing %s page %" PRIaPGNO " (has %u keys, %.1f%% full)", - IS_LEAF(mc->mc_pg[mc->mc_top]) ? "leaf" : "branch", - mc->mc_pg[mc->mc_top]->mp_pgno, NUMKEYS(mc->mc_pg[mc->mc_top]), - (float)PAGEFILL(mc->mc_txn->mt_env, mc->mc_pg[mc->mc_top]) / 10); - - if (PAGEFILL(mc->mc_txn->mt_env, mc->mc_pg[mc->mc_top]) >= thresh && - NUMKEYS(mc->mc_pg[mc->mc_top]) >= minkeys) { - mdbx_debug("no need to rebalance page %" PRIaPGNO ", above fill threshold", - mc->mc_pg[mc->mc_top]->mp_pgno); - mdbx_cassert(mc, mc->mc_db->md_entries > 0); - return MDBX_SUCCESS; - } - - if (mc->mc_snum < 2) { - MDBX_page *const mp = mc->mc_pg[0]; - const unsigned nkeys = NUMKEYS(mp); - mdbx_cassert(mc, (mc->mc_db->md_entries == 0) == (nkeys == 0)); - if (IS_SUBP(mp)) { - mdbx_debug("Can't rebalance a subpage, ignoring"); - return MDBX_SUCCESS; - } - if (nkeys == 0) { - mdbx_debug("tree is completely empty"); - mc->mc_db->md_root = P_INVALID; - mc->mc_db->md_depth = 0; - mc->mc_db->md_leaf_pages = 0; - rc = mdbx_pnl_append(&mc->mc_txn->mt_befree_pages, mp->mp_pgno); - if (unlikely(rc)) - return rc; - /* Adjust cursors pointing to mp */ - const MDBX_dbi dbi = mc->mc_dbi; - for (MDBX_cursor *m2 = mc->mc_txn->mt_cursors[dbi]; m2; - m2 = m2->mc_next) { - MDBX_cursor *m3 = - (mc->mc_flags & C_SUB) ? &m2->mc_xcursor->mx_cursor : m2; - if (!(m3->mc_flags & C_INITIALIZED) || (m3->mc_snum < mc->mc_snum)) - continue; - if (m3->mc_pg[0] == mp) { - m3->mc_snum = 0; - m3->mc_top = 0; - m3->mc_flags &= ~C_INITIALIZED; - } - } - mc->mc_snum = 0; - mc->mc_top = 0; - mc->mc_flags &= ~C_INITIALIZED; - } else if (IS_BRANCH(mp) && nkeys == 1) { - int i; - mdbx_debug("collapsing root page!"); - rc = mdbx_pnl_append(&mc->mc_txn->mt_befree_pages, mp->mp_pgno); - if (unlikely(rc)) - return rc; - mc->mc_db->md_root = NODEPGNO(NODEPTR(mp, 0)); - rc = mdbx_page_get(mc, mc->mc_db->md_root, &mc->mc_pg[0], NULL); - if (unlikely(rc)) - return rc; - mc->mc_db->md_depth--; - mc->mc_db->md_branch_pages--; - mc->mc_ki[0] = mc->mc_ki[1]; - for (i = 1; i < mc->mc_db->md_depth; i++) { - mc->mc_pg[i] = mc->mc_pg[i + 1]; - mc->mc_ki[i] = mc->mc_ki[i + 1]; - } - { - /* Adjust other cursors pointing to mp */ - MDBX_cursor *m2, *m3; - MDBX_dbi dbi = mc->mc_dbi; - - for (m2 = mc->mc_txn->mt_cursors[dbi]; m2; m2 = m2->mc_next) { - if (mc->mc_flags & C_SUB) - m3 = &m2->mc_xcursor->mx_cursor; - else - m3 = m2; - if (m3 == mc) - continue; - if (!(m3->mc_flags & C_INITIALIZED)) - continue; - if (m3->mc_pg[0] == mp) { - for (i = 0; i < mc->mc_db->md_depth; i++) { - m3->mc_pg[i] = m3->mc_pg[i + 1]; - m3->mc_ki[i] = m3->mc_ki[i + 1]; - } - m3->mc_snum--; - m3->mc_top--; - } - } - } - } else { - mdbx_debug("root page %" PRIaPGNO - " doesn't need rebalancing (flags 0x%x)", - mp->mp_pgno, mp->mp_flags); - } - return MDBX_SUCCESS; - } - - /* The parent (branch page) must have at least 2 pointers, - * otherwise the tree is invalid. */ - ptop = mc->mc_top - 1; - mdbx_cassert(mc, NUMKEYS(mc->mc_pg[ptop]) > 1); - - /* Leaf page fill factor is below the threshold. - * Try to move keys from left or right neighbor, or - * merge with a neighbor page. */ - - /* Find neighbors. */ - mdbx_cursor_copy(mc, &mn); - mn.mc_xcursor = NULL; - - oldki = mc->mc_ki[mc->mc_top]; - if (mc->mc_ki[ptop] == 0) { - /* We're the leftmost leaf in our parent. */ - mdbx_debug("reading right neighbor"); - mn.mc_ki[ptop]++; - node = NODEPTR(mc->mc_pg[ptop], mn.mc_ki[ptop]); - rc = mdbx_page_get(mc, NODEPGNO(node), &mn.mc_pg[mn.mc_top], NULL); - if (unlikely(rc)) - return rc; - mn.mc_ki[mn.mc_top] = 0; - mc->mc_ki[mc->mc_top] = NUMKEYS(mc->mc_pg[mc->mc_top]); - fromleft = 0; - } else { - /* There is at least one neighbor to the left. */ - mdbx_debug("reading left neighbor"); - mn.mc_ki[ptop]--; - node = NODEPTR(mc->mc_pg[ptop], mn.mc_ki[ptop]); - rc = mdbx_page_get(mc, NODEPGNO(node), &mn.mc_pg[mn.mc_top], NULL); - if (unlikely(rc)) - return rc; - mn.mc_ki[mn.mc_top] = NUMKEYS(mn.mc_pg[mn.mc_top]) - 1; - mc->mc_ki[mc->mc_top] = 0; - fromleft = 1; - } - - mdbx_debug("found neighbor page %" PRIaPGNO " (%u keys, %.1f%% full)", - mn.mc_pg[mn.mc_top]->mp_pgno, NUMKEYS(mn.mc_pg[mn.mc_top]), - (float)PAGEFILL(mc->mc_txn->mt_env, mn.mc_pg[mn.mc_top]) / 10); - - /* If the neighbor page is above threshold and has enough keys, - * move one key from it. Otherwise we should try to merge them. - * (A branch page must never have less than 2 keys.) */ - if (PAGEFILL(mc->mc_txn->mt_env, mn.mc_pg[mn.mc_top]) >= thresh && - NUMKEYS(mn.mc_pg[mn.mc_top]) > minkeys) { - rc = mdbx_node_move(&mn, mc, fromleft); - if (fromleft) { - /* if we inserted on left, bump position up */ - oldki++; - } - } else { - if (!fromleft) { - rc = mdbx_page_merge(&mn, mc); - } else { - oldki += NUMKEYS(mn.mc_pg[mn.mc_top]); - mn.mc_ki[mn.mc_top] += mc->mc_ki[mn.mc_top] + 1; - /* We want mdbx_rebalance to find mn when doing fixups */ - WITH_CURSOR_TRACKING(mn, rc = mdbx_page_merge(mc, &mn)); - mdbx_cursor_copy(&mn, mc); - } - mc->mc_flags &= ~C_EOF; - } - mc->mc_ki[mc->mc_top] = oldki; - return rc; -} - -/* Complete a delete operation started by mdbx_cursor_del(). */ -static int mdbx_cursor_del0(MDBX_cursor *mc) { - int rc; - MDBX_page *mp; - indx_t ki; - unsigned nkeys; - MDBX_cursor *m2, *m3; - MDBX_dbi dbi = mc->mc_dbi; - - ki = mc->mc_ki[mc->mc_top]; - mp = mc->mc_pg[mc->mc_top]; - mdbx_node_del(mc, mc->mc_db->md_xsize); - mc->mc_db->md_entries--; - { - /* Adjust other cursors pointing to mp */ - for (m2 = mc->mc_txn->mt_cursors[dbi]; m2; m2 = m2->mc_next) { - m3 = (mc->mc_flags & C_SUB) ? &m2->mc_xcursor->mx_cursor : m2; - if (!(m2->mc_flags & m3->mc_flags & C_INITIALIZED)) - continue; - if (m3 == mc || m3->mc_snum < mc->mc_snum) - continue; - if (m3->mc_pg[mc->mc_top] == mp) { - if (m3->mc_ki[mc->mc_top] == ki) { - m3->mc_flags |= C_DEL; - if (mc->mc_db->md_flags & MDBX_DUPSORT) { - /* Sub-cursor referred into dataset which is gone */ - m3->mc_xcursor->mx_cursor.mc_flags &= ~(C_INITIALIZED | C_EOF); - } - continue; - } else if (m3->mc_ki[mc->mc_top] > ki) { - m3->mc_ki[mc->mc_top]--; - } - if (XCURSOR_INITED(m3)) - XCURSOR_REFRESH(m3, m3->mc_pg[mc->mc_top], m3->mc_ki[mc->mc_top]); - } - } - } - rc = mdbx_rebalance(mc); - - if (likely(rc == MDBX_SUCCESS)) { - /* DB is totally empty now, just bail out. - * Other cursors adjustments were already done - * by mdbx_rebalance and aren't needed here. */ - if (!mc->mc_snum) { - mdbx_cassert(mc, mc->mc_db->md_entries == 0 && mc->mc_db->md_depth == 0 && - mc->mc_db->md_root == P_INVALID); - mc->mc_flags |= C_DEL | C_EOF; - return rc; - } - - mp = mc->mc_pg[mc->mc_top]; - nkeys = NUMKEYS(mp); - mdbx_cassert(mc, (mc->mc_db->md_entries > 0 && nkeys > 0) || - ((mc->mc_flags & C_SUB) && - mc->mc_db->md_entries == 0 && nkeys == 0)); - - /* Adjust other cursors pointing to mp */ - for (m2 = mc->mc_txn->mt_cursors[dbi]; !rc && m2; m2 = m2->mc_next) { - m3 = (mc->mc_flags & C_SUB) ? &m2->mc_xcursor->mx_cursor : m2; - if (!(m2->mc_flags & m3->mc_flags & C_INITIALIZED)) - continue; - if (m3->mc_snum < mc->mc_snum) - continue; - if (m3->mc_pg[mc->mc_top] == mp) { - /* if m3 points past last node in page, find next sibling */ - if (m3->mc_ki[mc->mc_top] >= mc->mc_ki[mc->mc_top]) { - if (m3->mc_ki[mc->mc_top] >= nkeys) { - rc = mdbx_cursor_sibling(m3, 1); - if (rc == MDBX_NOTFOUND) { - m3->mc_flags |= C_EOF; - rc = MDBX_SUCCESS; - continue; - } else if (unlikely(rc != MDBX_SUCCESS)) - break; - } - if (mc->mc_db->md_flags & MDBX_DUPSORT) { - MDBX_node *node = - NODEPTR(m3->mc_pg[m3->mc_top], m3->mc_ki[m3->mc_top]); - /* If this node has dupdata, it may need to be reinited - * because its data has moved. - * If the xcursor was not initd it must be reinited. - * Else if node points to a subDB, nothing is needed. */ - if (node->mn_flags & F_DUPDATA) { - if (m3->mc_xcursor->mx_cursor.mc_flags & C_INITIALIZED) { - if (!(node->mn_flags & F_SUBDATA)) - m3->mc_xcursor->mx_cursor.mc_pg[0] = NODEDATA(node); - } else { - rc = mdbx_xcursor_init1(m3, node); - if (likely(rc == MDBX_SUCCESS)) - m3->mc_xcursor->mx_cursor.mc_flags |= C_DEL; - } - } - } - } - } - } - mc->mc_flags |= C_DEL; - } - - if (unlikely(rc)) - mc->mc_txn->mt_flags |= MDBX_TXN_ERROR; - return rc; -} - -int mdbx_del(MDBX_txn *txn, MDBX_dbi dbi, MDBX_val *key, MDBX_val *data) { - if (unlikely(!key || !txn)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - if (unlikely(!TXN_DBI_EXIST(txn, dbi, DB_USRVALID))) - return MDBX_EINVAL; - - if (unlikely(txn->mt_flags & (MDBX_TXN_RDONLY | MDBX_TXN_BLOCKED))) - return (txn->mt_flags & MDBX_TXN_RDONLY) ? MDBX_EACCESS : MDBX_BAD_TXN; - - return mdbx_del0(txn, dbi, key, data, 0); -} - -static int mdbx_del0(MDBX_txn *txn, MDBX_dbi dbi, MDBX_val *key, MDBX_val *data, - unsigned flags) { - MDBX_cursor mc; - MDBX_xcursor mx; - MDBX_cursor_op op; - MDBX_val rdata; - int rc, exact = 0; - DKBUF; - - mdbx_debug("====> delete db %u key [%s], data [%s]", dbi, DKEY(key), - DVAL(data)); - - rc = mdbx_cursor_init(&mc, txn, dbi, &mx); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - - if (data) { - op = MDBX_GET_BOTH; - rdata = *data; - data = &rdata; - } else { - op = MDBX_SET; - flags |= MDBX_NODUPDATA; - } - rc = mdbx_cursor_set(&mc, key, data, op, &exact); - if (likely(rc == MDBX_SUCCESS)) { - /* let mdbx_page_split know about this cursor if needed: - * delete will trigger a rebalance; if it needs to move - * a node from one page to another, it will have to - * update the parent's separator key(s). If the new sepkey - * is larger than the current one, the parent page may - * run out of space, triggering a split. We need this - * cursor to be consistent until the end of the rebalance. */ - mc.mc_next = txn->mt_cursors[dbi]; - txn->mt_cursors[dbi] = &mc; - rc = mdbx_cursor_del(&mc, flags); - txn->mt_cursors[dbi] = mc.mc_next; - } - return rc; -} - -/* Split a page and insert a new node. - * Set MDBX_TXN_ERROR on failure. - * [in,out] mc Cursor pointing to the page and desired insertion index. - * The cursor will be updated to point to the actual page and index where - * the node got inserted after the split. - * [in] newkey The key for the newly inserted node. - * [in] newdata The data for the newly inserted node. - * [in] newpgno The page number, if the new node is a branch node. - * [in] nflags The NODE_ADD_FLAGS for the new node. - * Returns 0 on success, non-zero on failure. */ -static int mdbx_page_split(MDBX_cursor *mc, MDBX_val *newkey, MDBX_val *newdata, - pgno_t newpgno, unsigned nflags) { - unsigned flags; - int rc = MDBX_SUCCESS, new_root = 0, did_split = 0; - pgno_t pgno = 0; - unsigned i, ptop; - MDBX_env *env = mc->mc_txn->mt_env; - MDBX_node *node; - MDBX_val sepkey, rkey, xdata, *rdata = &xdata; - MDBX_page *copy = NULL; - MDBX_page *rp, *pp; - MDBX_cursor mn; - DKBUF; - - MDBX_page *mp = mc->mc_pg[mc->mc_top]; - unsigned newindx = mc->mc_ki[mc->mc_top]; - unsigned nkeys = NUMKEYS(mp); - - mdbx_debug("-----> splitting %s page %" PRIaPGNO - " and adding [%s] at index %i/%i", - IS_LEAF(mp) ? "leaf" : "branch", mp->mp_pgno, DKEY(newkey), - mc->mc_ki[mc->mc_top], nkeys); - - /* Create a right sibling. */ - if ((rc = mdbx_page_new(mc, mp->mp_flags, 1, &rp))) - return rc; - rp->mp_leaf2_ksize = mp->mp_leaf2_ksize; - mdbx_debug("new right sibling: page %" PRIaPGNO "", rp->mp_pgno); - - /* Usually when splitting the root page, the cursor - * height is 1. But when called from mdbx_update_key, - * the cursor height may be greater because it walks - * up the stack while finding the branch slot to update. */ - if (mc->mc_top < 1) { - if ((rc = mdbx_page_new(mc, P_BRANCH, 1, &pp))) - goto done; - /* shift current top to make room for new parent */ - for (i = mc->mc_snum; i > 0; i--) { - mc->mc_pg[i] = mc->mc_pg[i - 1]; - mc->mc_ki[i] = mc->mc_ki[i - 1]; - } - mc->mc_pg[0] = pp; - mc->mc_ki[0] = 0; - mc->mc_db->md_root = pp->mp_pgno; - mdbx_debug("root split! new root = %" PRIaPGNO "", pp->mp_pgno); - new_root = mc->mc_db->md_depth++; - - /* Add left (implicit) pointer. */ - if (unlikely((rc = mdbx_node_add(mc, 0, NULL, NULL, mp->mp_pgno, 0)) != - MDBX_SUCCESS)) { - /* undo the pre-push */ - mc->mc_pg[0] = mc->mc_pg[1]; - mc->mc_ki[0] = mc->mc_ki[1]; - mc->mc_db->md_root = mp->mp_pgno; - mc->mc_db->md_depth--; - goto done; - } - mc->mc_snum++; - mc->mc_top++; - ptop = 0; - } else { - ptop = mc->mc_top - 1; - mdbx_debug("parent branch page is %" PRIaPGNO "", mc->mc_pg[ptop]->mp_pgno); - } - - mdbx_cursor_copy(mc, &mn); - mn.mc_xcursor = NULL; - mn.mc_pg[mn.mc_top] = rp; - mn.mc_ki[ptop] = mc->mc_ki[ptop] + 1; - - unsigned split_indx; - if (nflags & MDBX_APPEND) { - mn.mc_ki[mn.mc_top] = 0; - sepkey = *newkey; - split_indx = newindx; - nkeys = 0; - } else { - split_indx = (nkeys + 1) / 2; - - if (IS_LEAF2(rp)) { - char *split, *ins; - int x; - unsigned lsize, rsize, ksize; - /* Move half of the keys to the right sibling */ - x = mc->mc_ki[mc->mc_top] - split_indx; - ksize = mc->mc_db->md_xsize; - split = LEAF2KEY(mp, split_indx, ksize); - rsize = (nkeys - split_indx) * ksize; - lsize = (nkeys - split_indx) * sizeof(indx_t); - mdbx_cassert(mc, mp->mp_lower >= lsize); - mp->mp_lower -= (indx_t)lsize; - mdbx_cassert(mc, rp->mp_lower + lsize <= UINT16_MAX); - rp->mp_lower += (indx_t)lsize; - mdbx_cassert(mc, mp->mp_upper + rsize - lsize <= UINT16_MAX); - mp->mp_upper += (indx_t)(rsize - lsize); - mdbx_cassert(mc, rp->mp_upper >= rsize - lsize); - rp->mp_upper -= (indx_t)(rsize - lsize); - sepkey.iov_len = ksize; - if (newindx == split_indx) { - sepkey.iov_base = newkey->iov_base; - } else { - sepkey.iov_base = split; - } - if (x < 0) { - mdbx_cassert(mc, ksize >= sizeof(indx_t)); - ins = LEAF2KEY(mp, mc->mc_ki[mc->mc_top], ksize); - memcpy(rp->mp_ptrs, split, rsize); - sepkey.iov_base = rp->mp_ptrs; - memmove(ins + ksize, ins, (split_indx - mc->mc_ki[mc->mc_top]) * ksize); - memcpy(ins, newkey->iov_base, ksize); - mdbx_cassert(mc, UINT16_MAX - mp->mp_lower >= (int)sizeof(indx_t)); - mp->mp_lower += sizeof(indx_t); - mdbx_cassert(mc, mp->mp_upper >= ksize - sizeof(indx_t)); - mp->mp_upper -= (indx_t)(ksize - sizeof(indx_t)); - } else { - if (x) - memcpy(rp->mp_ptrs, split, x * ksize); - ins = LEAF2KEY(rp, x, ksize); - memcpy(ins, newkey->iov_base, ksize); - memcpy(ins + ksize, split + x * ksize, rsize - x * ksize); - mdbx_cassert(mc, UINT16_MAX - rp->mp_lower >= (int)sizeof(indx_t)); - rp->mp_lower += sizeof(indx_t); - mdbx_cassert(mc, rp->mp_upper >= ksize - sizeof(indx_t)); - rp->mp_upper -= (indx_t)(ksize - sizeof(indx_t)); - mdbx_cassert(mc, x <= UINT16_MAX); - mc->mc_ki[mc->mc_top] = (indx_t)x; - } - } else { - size_t psize, nsize, k; - /* Maximum free space in an empty page */ - unsigned pmax = env->me_psize - PAGEHDRSZ; - if (IS_LEAF(mp)) - nsize = mdbx_leaf_size(env, newkey, newdata); - else - nsize = mdbx_branch_size(env, newkey); - nsize = EVEN(nsize); - - /* grab a page to hold a temporary copy */ - copy = mdbx_page_malloc(mc->mc_txn, 1); - if (unlikely(copy == NULL)) { - rc = MDBX_ENOMEM; - goto done; - } - copy->mp_pgno = mp->mp_pgno; - copy->mp_flags = mp->mp_flags; - copy->mp_lower = 0; - mdbx_cassert(mc, env->me_psize - PAGEHDRSZ <= UINT16_MAX); - copy->mp_upper = (indx_t)(env->me_psize - PAGEHDRSZ); - - /* prepare to insert */ - for (unsigned j = i = 0; i < nkeys; i++) { - if (i == newindx) - copy->mp_ptrs[j++] = 0; - copy->mp_ptrs[j++] = mp->mp_ptrs[i]; - } - - /* When items are relatively large the split point needs - * to be checked, because being off-by-one will make the - * difference between success or failure in mdbx_node_add. - * - * It's also relevant if a page happens to be laid out - * such that one half of its nodes are all "small" and - * the other half of its nodes are "large." If the new - * item is also "large" and falls on the half with - * "large" nodes, it also may not fit. - * - * As a final tweak, if the new item goes on the last - * spot on the page (and thus, onto the new page), bias - * the split so the new page is emptier than the old page. - * This yields better packing during sequential inserts. - */ - int dir; - if (nkeys < 20 || nsize > pmax / 16 || newindx >= nkeys) { - /* Find split point */ - psize = 0; - if (newindx <= split_indx || newindx >= nkeys) { - i = 0; - dir = 1; - k = (newindx >= nkeys) ? nkeys : split_indx + 1 + IS_LEAF(mp); - } else { - i = nkeys; - dir = -1; - k = split_indx - 1; - } - for (; i != k; i += dir) { - if (i == newindx) { - psize += nsize; - node = NULL; - } else { - node = (MDBX_node *)((char *)mp + copy->mp_ptrs[i] + PAGEHDRSZ); - psize += NODESIZE + NODEKSZ(node) + sizeof(indx_t); - if (IS_LEAF(mp)) { - if (F_ISSET(node->mn_flags, F_BIGDATA)) - psize += sizeof(pgno_t); - else - psize += NODEDSZ(node); - } - psize = EVEN(psize); - } - if (psize > pmax || i == k - dir) { - split_indx = i + (dir < 0); - break; - } - } - } - if (split_indx == newindx) { - sepkey.iov_len = newkey->iov_len; - sepkey.iov_base = newkey->iov_base; - } else { - node = - (MDBX_node *)((char *)mp + copy->mp_ptrs[split_indx] + PAGEHDRSZ); - sepkey.iov_len = node->mn_ksize; - sepkey.iov_base = NODEKEY(node); - } - } - } - - mdbx_debug("separator is %d [%s]", split_indx, DKEY(&sepkey)); - - /* Copy separator key to the parent. */ - if (SIZELEFT(mn.mc_pg[ptop]) < mdbx_branch_size(env, &sepkey)) { - int snum = mc->mc_snum; - mn.mc_snum--; - mn.mc_top--; - did_split = 1; - /* We want other splits to find mn when doing fixups */ - WITH_CURSOR_TRACKING( - mn, rc = mdbx_page_split(&mn, &sepkey, NULL, rp->mp_pgno, 0)); - if (unlikely(rc != MDBX_SUCCESS)) - goto done; - - /* root split? */ - if (mc->mc_snum > snum) - ptop++; - - /* Right page might now have changed parent. - * Check if left page also changed parent. */ - if (mn.mc_pg[ptop] != mc->mc_pg[ptop] && - mc->mc_ki[ptop] >= NUMKEYS(mc->mc_pg[ptop])) { - for (i = 0; i < ptop; i++) { - mc->mc_pg[i] = mn.mc_pg[i]; - mc->mc_ki[i] = mn.mc_ki[i]; - } - mc->mc_pg[ptop] = mn.mc_pg[ptop]; - if (mn.mc_ki[ptop]) { - mc->mc_ki[ptop] = mn.mc_ki[ptop] - 1; - } else { - /* find right page's left sibling */ - mc->mc_ki[ptop] = mn.mc_ki[ptop]; - rc = mdbx_cursor_sibling(mc, 0); - } - } - } else { - mn.mc_top--; - rc = mdbx_node_add(&mn, mn.mc_ki[ptop], &sepkey, NULL, rp->mp_pgno, 0); - mn.mc_top++; - } - if (unlikely(rc != MDBX_SUCCESS)) { - if (rc == MDBX_NOTFOUND) /* improper mdbx_cursor_sibling() result */ { - mdbx_error("unexpected %s", "MDBX_NOTFOUND"); - rc = MDBX_PROBLEM; - } - goto done; - } - if (nflags & MDBX_APPEND) { - mc->mc_pg[mc->mc_top] = rp; - mc->mc_ki[mc->mc_top] = 0; - rc = mdbx_node_add(mc, 0, newkey, newdata, newpgno, nflags); - if (rc) - goto done; - for (i = 0; i < mc->mc_top; i++) - mc->mc_ki[i] = mn.mc_ki[i]; - } else if (!IS_LEAF2(mp)) { - /* Move nodes */ - mc->mc_pg[mc->mc_top] = rp; - i = split_indx; - indx_t n = 0; - do { - if (i == newindx) { - rkey.iov_base = newkey->iov_base; - rkey.iov_len = newkey->iov_len; - if (IS_LEAF(mp)) { - rdata = newdata; - } else - pgno = newpgno; - flags = nflags; - /* Update index for the new key. */ - mc->mc_ki[mc->mc_top] = n; - } else { - node = (MDBX_node *)((char *)mp + copy->mp_ptrs[i] + PAGEHDRSZ); - rkey.iov_base = NODEKEY(node); - rkey.iov_len = node->mn_ksize; - if (IS_LEAF(mp)) { - xdata.iov_base = NODEDATA(node); - xdata.iov_len = NODEDSZ(node); - rdata = &xdata; - } else - pgno = NODEPGNO(node); - flags = node->mn_flags; - } - - if (!IS_LEAF(mp) && n == 0) { - /* First branch index doesn't need key data. */ - rkey.iov_len = 0; - } - - rc = mdbx_node_add(mc, n, &rkey, rdata, pgno, flags); - if (rc) - goto done; - if (i == nkeys) { - i = 0; - n = 0; - mc->mc_pg[mc->mc_top] = copy; - } else { - i++; - n++; - } - } while (i != split_indx); - - nkeys = NUMKEYS(copy); - for (i = 0; i < nkeys; i++) - mp->mp_ptrs[i] = copy->mp_ptrs[i]; - mp->mp_lower = copy->mp_lower; - mp->mp_upper = copy->mp_upper; - memcpy(NODEPTR(mp, nkeys - 1), NODEPTR(copy, nkeys - 1), - env->me_psize - copy->mp_upper - PAGEHDRSZ); - - /* reset back to original page */ - if (newindx < split_indx) { - mc->mc_pg[mc->mc_top] = mp; - } else { - mc->mc_pg[mc->mc_top] = rp; - mc->mc_ki[ptop]++; - /* Make sure mc_ki is still valid. */ - if (mn.mc_pg[ptop] != mc->mc_pg[ptop] && - mc->mc_ki[ptop] >= NUMKEYS(mc->mc_pg[ptop])) { - for (i = 0; i <= ptop; i++) { - mc->mc_pg[i] = mn.mc_pg[i]; - mc->mc_ki[i] = mn.mc_ki[i]; - } - } - } - if (nflags & MDBX_RESERVE) { - node = NODEPTR(mc->mc_pg[mc->mc_top], mc->mc_ki[mc->mc_top]); - if (!(node->mn_flags & F_BIGDATA)) - newdata->iov_base = NODEDATA(node); - } - } else { - if (newindx >= split_indx) { - mc->mc_pg[mc->mc_top] = rp; - mc->mc_ki[ptop]++; - /* Make sure mc_ki is still valid. */ - if (mn.mc_pg[ptop] != mc->mc_pg[ptop] && - mc->mc_ki[ptop] >= NUMKEYS(mc->mc_pg[ptop])) { - for (i = 0; i <= ptop; i++) { - mc->mc_pg[i] = mn.mc_pg[i]; - mc->mc_ki[i] = mn.mc_ki[i]; - } - } - } - } - - { - /* Adjust other cursors pointing to mp */ - MDBX_cursor *m2, *m3; - MDBX_dbi dbi = mc->mc_dbi; - nkeys = NUMKEYS(mp); - - for (m2 = mc->mc_txn->mt_cursors[dbi]; m2; m2 = m2->mc_next) { - if (mc->mc_flags & C_SUB) - m3 = &m2->mc_xcursor->mx_cursor; - else - m3 = m2; - if (m3 == mc) - continue; - if (!(m2->mc_flags & m3->mc_flags & C_INITIALIZED)) - continue; - if (new_root) { - int k; - /* sub cursors may be on different DB */ - if (m3->mc_pg[0] != mp) - continue; - /* root split */ - for (k = new_root; k >= 0; k--) { - m3->mc_ki[k + 1] = m3->mc_ki[k]; - m3->mc_pg[k + 1] = m3->mc_pg[k]; - } - if (m3->mc_ki[0] >= nkeys) { - m3->mc_ki[0] = 1; - } else { - m3->mc_ki[0] = 0; - } - m3->mc_pg[0] = mc->mc_pg[0]; - m3->mc_snum++; - m3->mc_top++; - } - if (m3->mc_top >= mc->mc_top && m3->mc_pg[mc->mc_top] == mp) { - if (m3->mc_ki[mc->mc_top] >= newindx && !(nflags & MDBX_SPLIT_REPLACE)) - m3->mc_ki[mc->mc_top]++; - if (m3->mc_ki[mc->mc_top] >= nkeys) { - m3->mc_pg[mc->mc_top] = rp; - mdbx_cassert(mc, m3->mc_ki[mc->mc_top] >= nkeys); - m3->mc_ki[mc->mc_top] -= (indx_t)nkeys; - for (i = 0; i < mc->mc_top; i++) { - m3->mc_ki[i] = mn.mc_ki[i]; - m3->mc_pg[i] = mn.mc_pg[i]; - } - } - } else if (!did_split && m3->mc_top >= ptop && - m3->mc_pg[ptop] == mc->mc_pg[ptop] && - m3->mc_ki[ptop] >= mc->mc_ki[ptop]) { - m3->mc_ki[ptop]++; - } - if (XCURSOR_INITED(m3) && IS_LEAF(mp)) - XCURSOR_REFRESH(m3, m3->mc_pg[mc->mc_top], m3->mc_ki[mc->mc_top]); - } - } - mdbx_debug("mp left: %d, rp left: %d", SIZELEFT(mp), SIZELEFT(rp)); - -done: - if (copy) /* tmp page */ - mdbx_page_free(env, copy); - if (unlikely(rc)) - mc->mc_txn->mt_flags |= MDBX_TXN_ERROR; - return rc; -} - -int mdbx_put(MDBX_txn *txn, MDBX_dbi dbi, MDBX_val *key, MDBX_val *data, - unsigned flags) { - MDBX_cursor mc; - MDBX_xcursor mx; - - if (unlikely(!key || !data || !txn)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - if (unlikely(!TXN_DBI_EXIST(txn, dbi, DB_USRVALID))) - return MDBX_EINVAL; - - if (unlikely(flags & ~(MDBX_NOOVERWRITE | MDBX_NODUPDATA | MDBX_RESERVE | - MDBX_APPEND | MDBX_APPENDDUP | MDBX_CURRENT))) - return MDBX_EINVAL; - - if (unlikely(txn->mt_flags & (MDBX_TXN_RDONLY | MDBX_TXN_BLOCKED))) - return (txn->mt_flags & MDBX_TXN_RDONLY) ? MDBX_EACCESS : MDBX_BAD_TXN; - - int rc = mdbx_cursor_init(&mc, txn, dbi, &mx); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - mc.mc_next = txn->mt_cursors[dbi]; - txn->mt_cursors[dbi] = &mc; - - /* LY: support for update (explicit overwrite) */ - if (flags & MDBX_CURRENT) { - rc = mdbx_cursor_get(&mc, key, NULL, MDBX_SET); - if (likely(rc == MDBX_SUCCESS) && - (txn->mt_dbs[dbi].md_flags & MDBX_DUPSORT)) { - /* LY: allows update (explicit overwrite) only for unique keys */ - MDBX_node *leaf = NODEPTR(mc.mc_pg[mc.mc_top], mc.mc_ki[mc.mc_top]); - if (F_ISSET(leaf->mn_flags, F_DUPDATA)) { - mdbx_tassert(txn, XCURSOR_INITED(&mc) && - mc.mc_xcursor->mx_db.md_entries > 1); - rc = MDBX_EMULTIVAL; - } - } - } - - if (likely(rc == MDBX_SUCCESS)) - rc = mdbx_cursor_put(&mc, key, data, flags); - txn->mt_cursors[dbi] = mc.mc_next; - - return rc; -} - -#ifndef MDBX_WBUF -#define MDBX_WBUF (1024 * 1024) -#endif -#define MDBX_EOF 0x10 /* mdbx_env_copyfd1() is done reading */ - -/* State needed for a double-buffering compacting copy. */ -typedef struct mdbx_copy { - MDBX_env *mc_env; - MDBX_txn *mc_txn; - mdbx_condmutex_t mc_condmutex; - uint8_t *mc_wbuf[2]; - uint8_t *mc_over[2]; - size_t mc_wlen[2]; - size_t mc_olen[2]; - mdbx_filehandle_t mc_fd; - volatile int mc_error; - pgno_t mc_next_pgno; - short mc_toggle; /* Buffer number in provider */ - short mc_new; /* (0-2 buffers to write) | (MDBX_EOF at end) */ - /* Error code. Never cleared if set. Both threads can set nonzero - * to fail the copy. Not mutex-protected, MDBX expects atomic int. */ -} mdbx_copy; - -/* Dedicated writer thread for compacting copy. */ -static THREAD_RESULT __cold THREAD_CALL mdbx_env_copythr(void *arg) { - mdbx_copy *my = arg; - uint8_t *ptr; - int toggle = 0; - int rc; - -#if defined(F_SETNOSIGPIPE) - /* OS X delivers SIGPIPE to the whole process, not the thread that caused it. - * Disable SIGPIPE using platform specific fcntl. */ - int enabled = 1; - if (fcntl(my->mc_fd, F_SETNOSIGPIPE, &enabled)) - my->mc_error = errno; -#endif - -#if defined(SIGPIPE) && !defined(_WIN32) && !defined(_WIN64) - sigset_t set; - sigemptyset(&set); - sigaddset(&set, SIGPIPE); - rc = pthread_sigmask(SIG_BLOCK, &set, NULL); - if (rc != 0) - my->mc_error = rc; -#endif - - mdbx_condmutex_lock(&my->mc_condmutex); - while (!my->mc_error) { - while (!my->mc_new) - mdbx_condmutex_wait(&my->mc_condmutex); - if (my->mc_new == 0 + MDBX_EOF) /* 0 buffers, just EOF */ - break; - size_t wsize = my->mc_wlen[toggle]; - ptr = my->mc_wbuf[toggle]; - again: - if (wsize > 0 && !my->mc_error) { - rc = mdbx_write(my->mc_fd, ptr, wsize); - if (rc != MDBX_SUCCESS) { -#if defined(SIGPIPE) && !defined(_WIN32) && !defined(_WIN64) - if (rc == EPIPE) { - /* Collect the pending SIGPIPE, otherwise (at least OS X) - * gives it to the process on thread-exit (ITS#8504). */ - int tmp; - sigwait(&set, &tmp); - } -#endif - my->mc_error = rc; - } - } - - /* If there's an overflow page tail, write it too */ - if (my->mc_olen[toggle]) { - wsize = my->mc_olen[toggle]; - ptr = my->mc_over[toggle]; - my->mc_olen[toggle] = 0; - goto again; - } - my->mc_wlen[toggle] = 0; - toggle ^= 1; - /* Return the empty buffer to provider */ - my->mc_new--; - mdbx_condmutex_signal(&my->mc_condmutex); - } - mdbx_condmutex_unlock(&my->mc_condmutex); - return (THREAD_RESULT)0; -} - -/* Give buffer and/or MDBX_EOF to writer thread, await unused buffer. - * - * [in] my control structure. - * [in] adjust (1 to hand off 1 buffer) | (MDBX_EOF when ending). */ -static int __cold mdbx_env_cthr_toggle(mdbx_copy *my, int adjust) { - mdbx_condmutex_lock(&my->mc_condmutex); - my->mc_new += (short)adjust; - mdbx_condmutex_signal(&my->mc_condmutex); - while (my->mc_new & 2) /* both buffers in use */ - mdbx_condmutex_wait(&my->mc_condmutex); - mdbx_condmutex_unlock(&my->mc_condmutex); - - my->mc_toggle ^= (adjust & 1); - /* Both threads reset mc_wlen, to be safe from threading errors */ - my->mc_wlen[my->mc_toggle] = 0; - return my->mc_error; -} - -/* Depth-first tree traversal for compacting copy. - * [in] my control structure. - * [in,out] pg database root. - * [in] flags includes F_DUPDATA if it is a sorted-duplicate sub-DB. */ -static int __cold mdbx_env_cwalk(mdbx_copy *my, pgno_t *pg, int flags) { - MDBX_cursor mc; - MDBX_node *ni; - MDBX_page *mo, *mp, *leaf; - char *buf, *ptr; - int rc, toggle; - unsigned i; - - /* Empty DB, nothing to do */ - if (*pg == P_INVALID) - return MDBX_SUCCESS; - - memset(&mc, 0, sizeof(mc)); - mc.mc_snum = 1; - mc.mc_txn = my->mc_txn; - - rc = mdbx_page_get(&mc, *pg, &mc.mc_pg[0], NULL); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - rc = mdbx_page_search_root(&mc, NULL, MDBX_PS_FIRST); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - - /* Make cursor pages writable */ - buf = ptr = malloc(pgno2bytes(my->mc_env, mc.mc_snum)); - if (buf == NULL) - return MDBX_ENOMEM; - - for (i = 0; i < mc.mc_top; i++) { - mdbx_page_copy((MDBX_page *)ptr, mc.mc_pg[i], my->mc_env->me_psize); - mc.mc_pg[i] = (MDBX_page *)ptr; - ptr += my->mc_env->me_psize; - } - - /* This is writable space for a leaf page. Usually not needed. */ - leaf = (MDBX_page *)ptr; - - toggle = my->mc_toggle; - while (mc.mc_snum > 0) { - unsigned n; - mp = mc.mc_pg[mc.mc_top]; - n = NUMKEYS(mp); - - if (IS_LEAF(mp)) { - if (!IS_LEAF2(mp) && !(flags & F_DUPDATA)) { - for (i = 0; i < n; i++) { - ni = NODEPTR(mp, i); - if (ni->mn_flags & F_BIGDATA) { - MDBX_page *omp; - - /* Need writable leaf */ - if (mp != leaf) { - mc.mc_pg[mc.mc_top] = leaf; - mdbx_page_copy(leaf, mp, my->mc_env->me_psize); - mp = leaf; - ni = NODEPTR(mp, i); - } - - pgno_t pgno; - memcpy(&pgno, NODEDATA(ni), sizeof(pgno)); - memcpy(NODEDATA(ni), &my->mc_next_pgno, sizeof(pgno_t)); - rc = mdbx_page_get(&mc, pgno, &omp, NULL); - if (unlikely(rc != MDBX_SUCCESS)) - goto done; - if (my->mc_wlen[toggle] >= MDBX_WBUF) { - rc = mdbx_env_cthr_toggle(my, 1); - if (unlikely(rc != MDBX_SUCCESS)) - goto done; - toggle = my->mc_toggle; - } - mo = (MDBX_page *)(my->mc_wbuf[toggle] + my->mc_wlen[toggle]); - memcpy(mo, omp, my->mc_env->me_psize); - mo->mp_pgno = my->mc_next_pgno; - my->mc_next_pgno += omp->mp_pages; - my->mc_wlen[toggle] += my->mc_env->me_psize; - if (omp->mp_pages > 1) { - my->mc_olen[toggle] = pgno2bytes(my->mc_env, omp->mp_pages - 1); - my->mc_over[toggle] = (uint8_t *)omp + my->mc_env->me_psize; - rc = mdbx_env_cthr_toggle(my, 1); - if (unlikely(rc != MDBX_SUCCESS)) - goto done; - toggle = my->mc_toggle; - } - } else if (ni->mn_flags & F_SUBDATA) { - MDBX_db db; - - /* Need writable leaf */ - if (mp != leaf) { - mc.mc_pg[mc.mc_top] = leaf; - mdbx_page_copy(leaf, mp, my->mc_env->me_psize); - mp = leaf; - ni = NODEPTR(mp, i); - } - - memcpy(&db, NODEDATA(ni), sizeof(db)); - my->mc_toggle = (short)toggle; - rc = mdbx_env_cwalk(my, &db.md_root, ni->mn_flags & F_DUPDATA); - if (rc) - goto done; - toggle = my->mc_toggle; - memcpy(NODEDATA(ni), &db, sizeof(db)); - } - } - } - } else { - mc.mc_ki[mc.mc_top]++; - if (mc.mc_ki[mc.mc_top] < n) { - pgno_t pgno; - again: - ni = NODEPTR(mp, mc.mc_ki[mc.mc_top]); - pgno = NODEPGNO(ni); - rc = mdbx_page_get(&mc, pgno, &mp, NULL); - if (unlikely(rc != MDBX_SUCCESS)) - goto done; - mc.mc_top++; - mc.mc_snum++; - mc.mc_ki[mc.mc_top] = 0; - if (IS_BRANCH(mp)) { - /* Whenever we advance to a sibling branch page, - * we must proceed all the way down to its first leaf. */ - mdbx_page_copy(mc.mc_pg[mc.mc_top], mp, my->mc_env->me_psize); - goto again; - } else - mc.mc_pg[mc.mc_top] = mp; - continue; - } - } - if (my->mc_wlen[toggle] >= MDBX_WBUF) { - rc = mdbx_env_cthr_toggle(my, 1); - if (unlikely(rc != MDBX_SUCCESS)) - goto done; - toggle = my->mc_toggle; - } - mo = (MDBX_page *)(my->mc_wbuf[toggle] + my->mc_wlen[toggle]); - mdbx_page_copy(mo, mp, my->mc_env->me_psize); - mo->mp_pgno = my->mc_next_pgno++; - my->mc_wlen[toggle] += my->mc_env->me_psize; - if (mc.mc_top) { - /* Update parent if there is one */ - ni = NODEPTR(mc.mc_pg[mc.mc_top - 1], mc.mc_ki[mc.mc_top - 1]); - SETPGNO(ni, mo->mp_pgno); - mdbx_cursor_pop(&mc); - } else { - /* Otherwise we're done */ - *pg = mo->mp_pgno; - break; - } - } -done: - free(buf); - return rc; -} - -/* Copy environment with compaction. */ -static int __cold mdbx_env_compact(MDBX_env *env, mdbx_filehandle_t fd) { - MDBX_txn *txn = NULL; - mdbx_thread_t thr; - mdbx_copy ctx; - memset(&ctx, 0, sizeof(ctx)); - - int rc = mdbx_condmutex_init(&ctx.mc_condmutex); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - - const size_t buffer_size = pgno2bytes(env, NUM_METAS) + MDBX_WBUF * 2; - uint8_t *buffer = NULL; - rc = mdbx_memalign_alloc(env->me_os_psize, buffer_size, (void **)&buffer); - if (unlikely(rc != MDBX_SUCCESS)) - goto done; - - ctx.mc_wbuf[0] = buffer + pgno2bytes(env, NUM_METAS); - memset(ctx.mc_wbuf[0], 0, MDBX_WBUF * 2); - ctx.mc_wbuf[1] = ctx.mc_wbuf[0] + MDBX_WBUF; - ctx.mc_next_pgno = NUM_METAS; - ctx.mc_env = env; - ctx.mc_fd = fd; - rc = mdbx_thread_create(&thr, mdbx_env_copythr, &ctx); - if (unlikely(rc != MDBX_SUCCESS)) - goto done; - - rc = mdbx_txn_begin(env, NULL, MDBX_RDONLY, &txn); - if (unlikely(rc != MDBX_SUCCESS)) - goto finish; - - MDBX_page *const meta = mdbx_init_metas(env, buffer); - - /* Set metapage 1 with current main DB */ - pgno_t new_root, root = txn->mt_dbs[MAIN_DBI].md_root; - if ((new_root = root) != P_INVALID) { - /* Count free pages + freeDB pages. Subtract from last_pg - * to find the new last_pg, which also becomes the new root. */ - pgno_t freecount = 0; - MDBX_cursor mc; - MDBX_val key, data; - - rc = mdbx_cursor_init(&mc, txn, FREE_DBI, NULL); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - while ((rc = mdbx_cursor_get(&mc, &key, &data, MDBX_NEXT)) == 0) - freecount += *(pgno_t *)data.iov_base; - if (unlikely(rc != MDBX_NOTFOUND)) - goto finish; - - freecount += txn->mt_dbs[FREE_DBI].md_branch_pages + - txn->mt_dbs[FREE_DBI].md_leaf_pages + - txn->mt_dbs[FREE_DBI].md_overflow_pages; - - new_root = txn->mt_next_pgno - 1 - freecount; - meta->mp_meta.mm_geo.next = meta->mp_meta.mm_geo.now = new_root + 1; - meta->mp_meta.mm_dbs[MAIN_DBI] = txn->mt_dbs[MAIN_DBI]; - meta->mp_meta.mm_dbs[MAIN_DBI].md_root = new_root; - } else { - /* When the DB is empty, handle it specially to - * fix any breakage like page leaks from ITS#8174. */ - meta->mp_meta.mm_dbs[MAIN_DBI].md_flags = txn->mt_dbs[MAIN_DBI].md_flags; - } - - /* copy canary sequenses if present */ - if (txn->mt_canary.v) { - meta->mp_meta.mm_canary = txn->mt_canary; - meta->mp_meta.mm_canary.v = mdbx_meta_txnid_stable(env, &meta->mp_meta); - } - - /* update signature */ - meta->mp_meta.mm_datasync_sign = mdbx_meta_sign(&meta->mp_meta); - memcpy(ctx.mc_wbuf[0], buffer, ctx.mc_wlen[0] = pgno2bytes(env, NUM_METAS)); - - ctx.mc_txn = txn; - rc = mdbx_env_cwalk(&ctx, &root, 0); - if (rc == MDBX_SUCCESS && root != new_root) { - if (root > new_root) { - mdbx_error("post-compactification root %" PRIaPGNO - " GT expected %" PRIaPGNO " (source DB corrupted)", - root, new_root); - rc = MDBX_CORRUPTED; /* page leak or corrupt DB */ - } else { - mdbx_error("post-compactification root %" PRIaPGNO - " LT expected %" PRIaPGNO " (page leak(s) in source DB)", - root, new_root); - /* fixup and rewrite metas */ - meta->mp_meta.mm_dbs[MAIN_DBI].md_root = root; - meta->mp_meta.mm_geo.next = meta->mp_meta.mm_geo.now = root + 1; - meta->mp_meta.mm_datasync_sign = mdbx_meta_sign(&meta->mp_meta); - rc = mdbx_pwrite(fd, buffer, pgno2bytes(env, NUM_METAS), 0); - } - } - -finish: - if (rc != MDBX_SUCCESS) - ctx.mc_error = rc; - mdbx_env_cthr_toggle(&ctx, 1 | MDBX_EOF); - rc = mdbx_thread_join(thr); - mdbx_txn_abort(txn); - -done: - mdbx_memalign_free(buffer); - mdbx_condmutex_destroy(&ctx.mc_condmutex); - return rc ? rc : ctx.mc_error; -} - -/* Copy environment as-is. */ -static int __cold mdbx_env_copy_asis(MDBX_env *env, mdbx_filehandle_t fd) { - MDBX_txn *txn = NULL; - - /* Do the lock/unlock of the reader mutex before starting the - * write txn. Otherwise other read txns could block writers. */ - int rc = mdbx_txn_begin(env, NULL, MDBX_RDONLY, &txn); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - - /* We must start the actual read txn after blocking writers */ - rc = mdbx_txn_end(txn, MDBX_END_RESET_TMP); - if (unlikely(rc != MDBX_SUCCESS)) - goto bailout; /* FIXME: or just return? */ - - /* Temporarily block writers until we snapshot the meta pages */ - rc = mdbx_txn_lock(env, false); - if (unlikely(rc != MDBX_SUCCESS)) - goto bailout; - - rc = mdbx_txn_renew0(txn, MDBX_RDONLY); - if (unlikely(rc != MDBX_SUCCESS)) { - mdbx_txn_unlock(env); - goto bailout; - } - - rc = mdbx_write(fd, env->me_map, pgno2bytes(env, NUM_METAS)); - MDBX_meta *const head = mdbx_meta_head(env); - const uint64_t size = - mdbx_roundup2(pgno2bytes(env, head->mm_geo.now), env->me_os_psize); - mdbx_txn_unlock(env); - - if (likely(rc == MDBX_SUCCESS)) - rc = mdbx_write(fd, env->me_map + pgno2bytes(env, NUM_METAS), - pgno2bytes(env, txn->mt_next_pgno - NUM_METAS)); - - if (likely(rc == MDBX_SUCCESS)) - rc = mdbx_ftruncate(fd, size); - -bailout: - mdbx_txn_abort(txn); - return rc; -} - -int __cold mdbx_env_copy2fd(MDBX_env *env, mdbx_filehandle_t fd, - unsigned flags) { - if (flags & MDBX_CP_COMPACT) - return mdbx_env_compact(env, fd); - - return mdbx_env_copy_asis(env, fd); -} - -int __cold mdbx_env_copy(MDBX_env *env, const char *dest_path, unsigned flags) { - char *dxb_pathname; - mdbx_filehandle_t newfd = INVALID_HANDLE_VALUE; - - if (env->me_flags & MDBX_NOSUBDIR) { - dxb_pathname = (char *)dest_path; - } else { - size_t len = strlen(dest_path); - len += sizeof(MDBX_DATANAME); - dxb_pathname = malloc(len); - if (!dxb_pathname) - return MDBX_ENOMEM; - sprintf(dxb_pathname, "%s" MDBX_DATANAME, dest_path); - } - - /* The destination path must exist, but the destination file must not. - * We don't want the OS to cache the writes, since the source data is - * already in the OS cache. */ - int rc = mdbx_openfile(dxb_pathname, O_WRONLY | O_CREAT | O_EXCL, 0640, - &newfd, true); - if (rc == MDBX_SUCCESS) { - if (env->me_psize >= env->me_os_psize) { -#ifdef F_NOCACHE /* __APPLE__ */ - (void)fcntl(newfd, F_NOCACHE, 1); -#elif defined(O_DIRECT) && defined(F_GETFL) - /* Set O_DIRECT if the file system supports it */ - if ((rc = fcntl(newfd, F_GETFL)) != -1) - (void)fcntl(newfd, F_SETFL, rc | O_DIRECT); -#endif - } - rc = mdbx_env_copy2fd(env, newfd, flags); - } - - if (newfd != INVALID_HANDLE_VALUE) { - int err = mdbx_closefile(newfd); - if (rc == MDBX_SUCCESS && err != rc) - rc = err; - if (rc != MDBX_SUCCESS) - (void)mdbx_removefile(dxb_pathname); - } - - if (dxb_pathname != dest_path) - free(dxb_pathname); - - return rc; -} - -int __cold mdbx_env_set_flags(MDBX_env *env, unsigned flags, int onoff) { - if (unlikely(flags & ~CHANGEABLE)) - return MDBX_EINVAL; - - int rc = mdbx_txn_lock(env, false); - if (unlikely(rc)) - return rc; - - if (onoff) - env->me_flags |= flags; - else - env->me_flags &= ~flags; - - mdbx_txn_unlock(env); - return MDBX_SUCCESS; -} - -int __cold mdbx_env_get_flags(MDBX_env *env, unsigned *arg) { - if (unlikely(!env || !arg)) - return MDBX_EINVAL; - - *arg = env->me_flags & (CHANGEABLE | CHANGELESS); - return MDBX_SUCCESS; -} - -int __cold mdbx_env_set_userctx(MDBX_env *env, void *ctx) { - if (unlikely(!env)) - return MDBX_EINVAL; - env->me_userctx = ctx; - return MDBX_SUCCESS; -} - -void *__cold mdbx_env_get_userctx(MDBX_env *env) { - return env ? env->me_userctx : NULL; -} - -int __cold mdbx_env_set_assert(MDBX_env *env, MDBX_assert_func *func) { - if (unlikely(!env)) - return MDBX_EINVAL; -#if MDBX_DEBUG - env->me_assert_func = func; - return MDBX_SUCCESS; -#else - (void)func; - return MDBX_ENOSYS; -#endif -} - -int __cold mdbx_env_get_path(MDBX_env *env, const char **arg) { - if (unlikely(!env || !arg)) - return MDBX_EINVAL; - - *arg = env->me_path; - return MDBX_SUCCESS; -} - -int __cold mdbx_env_get_fd(MDBX_env *env, mdbx_filehandle_t *arg) { - if (unlikely(!env || !arg)) - return MDBX_EINVAL; - - *arg = env->me_fd; - return MDBX_SUCCESS; -} - -/* Common code for mdbx_dbi_stat() and mdbx_env_stat(). - * [in] env the environment to operate in. - * [in] db the MDBX_db record containing the stats to return. - * [out] arg the address of an MDBX_stat structure to receive the stats. - * Returns 0, this function always succeeds. */ -static int __cold mdbx_stat0(MDBX_env *env, MDBX_db *db, MDBX_stat *arg) { - arg->ms_psize = env->me_psize; - arg->ms_depth = db->md_depth; - arg->ms_branch_pages = db->md_branch_pages; - arg->ms_leaf_pages = db->md_leaf_pages; - arg->ms_overflow_pages = db->md_overflow_pages; - arg->ms_entries = db->md_entries; - return MDBX_SUCCESS; -} - -int __cold mdbx_env_stat(MDBX_env *env, MDBX_stat *arg, size_t bytes) { - MDBX_meta *meta; - - if (unlikely(env == NULL || arg == NULL)) - return MDBX_EINVAL; - if (unlikely(bytes != sizeof(MDBX_stat))) - return MDBX_EINVAL; - - meta = mdbx_meta_head(env); - return mdbx_stat0(env, &meta->mm_dbs[MAIN_DBI], arg); -} - -int __cold mdbx_env_info(MDBX_env *env, MDBX_envinfo *arg, size_t bytes) { - - if (unlikely(env == NULL || arg == NULL)) - return MDBX_EINVAL; - - if (bytes != sizeof(MDBX_envinfo)) - return MDBX_EINVAL; - - const MDBX_meta *const meta0 = METAPAGE(env, 0); - const MDBX_meta *const meta1 = METAPAGE(env, 1); - const MDBX_meta *const meta2 = METAPAGE(env, 2); - const MDBX_meta *meta; - do { - meta = mdbx_meta_head(env); - arg->mi_recent_txnid = mdbx_meta_txnid_fluid(env, meta); - arg->mi_meta0_txnid = mdbx_meta_txnid_fluid(env, meta0); - arg->mi_meta0_sign = meta0->mm_datasync_sign; - arg->mi_meta1_txnid = mdbx_meta_txnid_fluid(env, meta1); - arg->mi_meta1_sign = meta1->mm_datasync_sign; - arg->mi_meta2_txnid = mdbx_meta_txnid_fluid(env, meta2); - arg->mi_meta2_sign = meta2->mm_datasync_sign; - arg->mi_last_pgno = meta->mm_geo.next - 1; - arg->mi_geo.lower = pgno2bytes(env, meta->mm_geo.lower); - arg->mi_geo.upper = pgno2bytes(env, meta->mm_geo.upper); - arg->mi_geo.current = pgno2bytes(env, meta->mm_geo.now); - arg->mi_geo.shrink = pgno2bytes(env, meta->mm_geo.shrink); - arg->mi_geo.grow = pgno2bytes(env, meta->mm_geo.grow); - arg->mi_mapsize = env->me_mapsize; - mdbx_compiler_barrier(); - } while (unlikely(arg->mi_meta0_txnid != mdbx_meta_txnid_fluid(env, meta0) || - arg->mi_meta0_sign != meta0->mm_datasync_sign || - arg->mi_meta1_txnid != mdbx_meta_txnid_fluid(env, meta1) || - arg->mi_meta1_sign != meta1->mm_datasync_sign || - arg->mi_meta2_txnid != mdbx_meta_txnid_fluid(env, meta2) || - arg->mi_meta2_sign != meta2->mm_datasync_sign || - meta != mdbx_meta_head(env) || - arg->mi_recent_txnid != mdbx_meta_txnid_fluid(env, meta))); - - arg->mi_maxreaders = env->me_maxreaders; - arg->mi_numreaders = env->me_lck ? env->me_lck->mti_numreaders : INT32_MAX; - arg->mi_dxb_pagesize = env->me_psize; - arg->mi_sys_pagesize = env->me_os_psize; - - arg->mi_self_latter_reader_txnid = arg->mi_latter_reader_txnid = 0; - if (env->me_lck) { - MDBX_reader *r = env->me_lck->mti_readers; - arg->mi_self_latter_reader_txnid = arg->mi_latter_reader_txnid = - arg->mi_recent_txnid; - for (unsigned i = 0; i < arg->mi_numreaders; ++i) { - const mdbx_pid_t pid = r[i].mr_pid; - if (pid) { - const txnid_t txnid = r[i].mr_txnid; - if (arg->mi_latter_reader_txnid > txnid) - arg->mi_latter_reader_txnid = txnid; - if (pid == env->me_pid && arg->mi_self_latter_reader_txnid > txnid) - arg->mi_self_latter_reader_txnid = txnid; - } - } - } - - return MDBX_SUCCESS; -} - -static MDBX_cmp_func *mdbx_default_keycmp(unsigned flags) { - return (flags & MDBX_REVERSEKEY) - ? mdbx_cmp_memnr - : (flags & MDBX_INTEGERKEY) ? mdbx_cmp_int_a2 : mdbx_cmp_memn; -} - -static MDBX_cmp_func *mdbx_default_datacmp(unsigned flags) { - return !(flags & MDBX_DUPSORT) - ? 0 - : ((flags & MDBX_INTEGERDUP) - ? mdbx_cmp_int_ua - : ((flags & MDBX_REVERSEDUP) ? mdbx_cmp_memnr - : mdbx_cmp_memn)); -} - -static int mdbx_dbi_bind(MDBX_txn *txn, const MDBX_dbi dbi, unsigned user_flags, - MDBX_cmp_func *keycmp, MDBX_cmp_func *datacmp) { - /* LY: so, accepting only three cases for the table's flags: - * 1) user_flags and both comparators are zero - * = assume that a by-default mode/flags is requested for reading; - * 2) user_flags exactly the same - * = assume that the target mode/flags are requested properly; - * 3) user_flags differs, but table is empty and MDBX_CREATE is provided - * = assume that a properly create request with custom flags; - */ - if ((user_flags ^ txn->mt_dbs[dbi].md_flags) & PERSISTENT_FLAGS) { - /* flags ara differs, check other conditions */ - if (!user_flags && (!keycmp || keycmp == txn->mt_dbxs[dbi].md_cmp) && - (!datacmp || datacmp == txn->mt_dbxs[dbi].md_dcmp)) { - /* no comparators were provided and flags are zero, - * seems that is case #1 above */ - user_flags = txn->mt_dbs[dbi].md_flags; - } else if ((user_flags & MDBX_CREATE) && txn->mt_dbs[dbi].md_entries == 0) { - if (txn->mt_flags & MDBX_TXN_RDONLY) - return /* FIXME: return extended info */ MDBX_EACCESS; - /* make sure flags changes get committed */ - txn->mt_dbs[dbi].md_flags = user_flags & PERSISTENT_FLAGS; - txn->mt_flags |= MDBX_TXN_DIRTY; - } else { - return /* FIXME: return extended info */ MDBX_INCOMPATIBLE; - } - } - - if (!txn->mt_dbxs[dbi].md_cmp || MDBX_DEBUG) { - if (!keycmp) - keycmp = mdbx_default_keycmp(user_flags); - assert(!txn->mt_dbxs[dbi].md_cmp || txn->mt_dbxs[dbi].md_cmp == keycmp); - txn->mt_dbxs[dbi].md_cmp = keycmp; - } - - if (!txn->mt_dbxs[dbi].md_dcmp || MDBX_DEBUG) { - if (!datacmp) - datacmp = mdbx_default_datacmp(user_flags); - assert(!txn->mt_dbxs[dbi].md_dcmp || txn->mt_dbxs[dbi].md_dcmp == datacmp); - txn->mt_dbxs[dbi].md_dcmp = datacmp; - } - - return MDBX_SUCCESS; -} - -int mdbx_dbi_open_ex(MDBX_txn *txn, const char *table_name, unsigned user_flags, - MDBX_dbi *dbi, MDBX_cmp_func *keycmp, - MDBX_cmp_func *datacmp) { - if (unlikely(!txn || !dbi || (user_flags & ~VALID_FLAGS) != 0)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - if (unlikely(txn->mt_flags & MDBX_TXN_BLOCKED)) - return MDBX_BAD_TXN; - - /* main table? */ - if (!table_name) { - *dbi = MAIN_DBI; - return mdbx_dbi_bind(txn, MAIN_DBI, user_flags, keycmp, datacmp); - } - - if (txn->mt_dbxs[MAIN_DBI].md_cmp == NULL) { - txn->mt_dbxs[MAIN_DBI].md_cmp = - mdbx_default_keycmp(txn->mt_dbs[MAIN_DBI].md_flags); - txn->mt_dbxs[MAIN_DBI].md_dcmp = - mdbx_default_datacmp(txn->mt_dbs[MAIN_DBI].md_flags); - } - - /* Is the DB already open? */ - size_t len = strlen(table_name); - MDBX_dbi scan, slot; - for (slot = scan = txn->mt_numdbs; --scan >= CORE_DBS;) { - if (!txn->mt_dbxs[scan].md_name.iov_len) { - /* Remember this free slot */ - slot = scan; - continue; - } - if (len == txn->mt_dbxs[scan].md_name.iov_len && - !strncmp(table_name, txn->mt_dbxs[scan].md_name.iov_base, len)) { - *dbi = scan; - return mdbx_dbi_bind(txn, scan, user_flags, keycmp, datacmp); - } - } - - /* Fail, if no free slot and max hit */ - MDBX_env *env = txn->mt_env; - if (unlikely(slot >= env->me_maxdbs)) - return MDBX_DBS_FULL; - - /* Cannot mix named table with some main-table flags */ - if (unlikely(txn->mt_dbs[MAIN_DBI].md_flags & - (MDBX_DUPSORT | MDBX_INTEGERKEY))) - return (user_flags & MDBX_CREATE) ? MDBX_INCOMPATIBLE : MDBX_NOTFOUND; - - /* Find the DB info */ - int exact = 0; - MDBX_val key, data; - key.iov_len = len; - key.iov_base = (void *)table_name; - MDBX_cursor mc; - int rc = mdbx_cursor_init(&mc, txn, MAIN_DBI, NULL); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - rc = mdbx_cursor_set(&mc, &key, &data, MDBX_SET, &exact); - if (unlikely(rc != MDBX_SUCCESS)) { - if (rc != MDBX_NOTFOUND || !(user_flags & MDBX_CREATE)) - return rc; - } else { - /* make sure this is actually a table */ - MDBX_node *node = NODEPTR(mc.mc_pg[mc.mc_top], mc.mc_ki[mc.mc_top]); - if (unlikely((node->mn_flags & (F_DUPDATA | F_SUBDATA)) != F_SUBDATA)) - return MDBX_INCOMPATIBLE; - } - - if (rc != MDBX_SUCCESS && unlikely(txn->mt_flags & MDBX_TXN_RDONLY)) - return MDBX_EACCESS; - - /* Done here so we cannot fail after creating a new DB */ - char *namedup = mdbx_strdup(table_name); - if (unlikely(!namedup)) - return MDBX_ENOMEM; - - int err = mdbx_fastmutex_acquire(&env->me_dbi_lock); - if (unlikely(err != MDBX_SUCCESS)) { - free(namedup); - return err; - } - - if (txn->mt_numdbs < env->me_numdbs) { - for (unsigned i = txn->mt_numdbs; i < env->me_numdbs; ++i) { - txn->mt_dbflags[i] = 0; - if (env->me_dbflags[i] & MDBX_VALID) { - txn->mt_dbs[i].md_flags = env->me_dbflags[i] & PERSISTENT_FLAGS; - txn->mt_dbflags[i] = DB_VALID | DB_USRVALID | DB_STALE; - assert(txn->mt_dbxs[i].md_cmp != NULL); - } - } - txn->mt_numdbs = env->me_numdbs; - } - - for (slot = scan = txn->mt_numdbs; --scan >= CORE_DBS;) { - if (!txn->mt_dbxs[scan].md_name.iov_len) { - /* Remember this free slot */ - slot = scan; - continue; - } - if (len == txn->mt_dbxs[scan].md_name.iov_len && - !strncmp(table_name, txn->mt_dbxs[scan].md_name.iov_base, len)) { - *dbi = scan; - rc = mdbx_dbi_bind(txn, scan, user_flags, keycmp, datacmp); - goto bailout; - } - } - - if (unlikely(slot >= env->me_maxdbs)) { - rc = MDBX_DBS_FULL; - goto bailout; - } - - unsigned dbflag = DB_FRESH | DB_VALID | DB_USRVALID; - if (unlikely(rc)) { - /* MDBX_NOTFOUND and MDBX_CREATE: Create new DB */ - assert(rc == MDBX_NOTFOUND); - MDBX_db db_dummy; - memset(&db_dummy, 0, sizeof(db_dummy)); - db_dummy.md_root = P_INVALID; - db_dummy.md_flags = user_flags & PERSISTENT_FLAGS; - data.iov_len = sizeof(db_dummy); - data.iov_base = &db_dummy; - WITH_CURSOR_TRACKING( - mc, - rc = mdbx_cursor_put(&mc, &key, &data, F_SUBDATA | MDBX_NOOVERWRITE)); - - if (unlikely(rc != MDBX_SUCCESS)) - goto bailout; - - dbflag |= DB_DIRTY | DB_CREAT; - } - - /* Got info, register DBI in this txn */ - txn->mt_dbxs[slot].md_cmp = nullptr; - txn->mt_dbxs[slot].md_dcmp = nullptr; - txn->mt_dbs[slot] = *(MDBX_db *)data.iov_base; - env->me_dbflags[slot] = 0; - rc = mdbx_dbi_bind(txn, slot, user_flags, keycmp, datacmp); - if (unlikely(rc != MDBX_SUCCESS)) { - assert((dbflag & DB_CREAT) == 0); - bailout: - free(namedup); - } else { - txn->mt_dbiseqs[slot] = (env->me_dbiseqs[slot] += 1); - txn->mt_dbflags[slot] = (uint8_t)dbflag; - txn->mt_dbxs[slot].md_name.iov_base = namedup; - mdbx_compiler_barrier(); - txn->mt_dbxs[slot].md_name.iov_len = len; - if (slot == txn->mt_numdbs) - txn->mt_numdbs++; - if ((dbflag & DB_CREAT) == 0) { - env->me_dbflags[slot] = txn->mt_dbs[slot].md_flags | MDBX_VALID; - mdbx_compiler_barrier(); - if (env->me_numdbs <= slot) - env->me_numdbs = slot + 1; - } - *dbi = slot; - } - - mdbx_ensure(env, mdbx_fastmutex_release(&env->me_dbi_lock) == MDBX_SUCCESS); - return rc; -} - -int mdbx_dbi_open(MDBX_txn *txn, const char *table_name, unsigned table_flags, - MDBX_dbi *dbi) { - return mdbx_dbi_open_ex(txn, table_name, table_flags, dbi, nullptr, nullptr); -} - -int __cold mdbx_dbi_stat(MDBX_txn *txn, MDBX_dbi dbi, MDBX_stat *arg, - size_t bytes) { - if (unlikely(!arg || !txn)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - if (unlikely(!TXN_DBI_EXIST(txn, dbi, DB_VALID))) - return MDBX_EINVAL; - - if (unlikely(bytes != sizeof(MDBX_stat))) - return MDBX_EINVAL; - - if (unlikely(txn->mt_flags & MDBX_TXN_BLOCKED)) - return MDBX_BAD_TXN; - - if (unlikely(txn->mt_dbflags[dbi] & DB_STALE)) { - MDBX_cursor mc; - MDBX_xcursor mx; - /* Stale, must read the DB's root. cursor_init does it for us. */ - int rc = mdbx_cursor_init(&mc, txn, dbi, &mx); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - } - return mdbx_stat0(txn->mt_env, &txn->mt_dbs[dbi], arg); -} - -static int mdbx_dbi_close_locked(MDBX_env *env, MDBX_dbi dbi) { - if (unlikely(dbi < CORE_DBS || dbi >= env->me_maxdbs)) - return MDBX_EINVAL; - - char *ptr = env->me_dbxs[dbi].md_name.iov_base; - /* If there was no name, this was already closed */ - if (unlikely(!ptr)) - return MDBX_BAD_DBI; - - env->me_dbflags[dbi] = 0; - env->me_dbxs[dbi].md_name.iov_len = 0; - mdbx_compiler_barrier(); - env->me_dbiseqs[dbi]++; - env->me_dbxs[dbi].md_name.iov_base = NULL; - free(ptr); - return MDBX_SUCCESS; -} - -int mdbx_dbi_close(MDBX_env *env, MDBX_dbi dbi) { - if (unlikely(dbi < CORE_DBS || dbi >= env->me_maxdbs)) - return MDBX_EINVAL; - - int rc = mdbx_fastmutex_acquire(&env->me_dbi_lock); - if (likely(rc == MDBX_SUCCESS)) { - rc = mdbx_dbi_close_locked(env, dbi); - mdbx_ensure(env, mdbx_fastmutex_release(&env->me_dbi_lock) == MDBX_SUCCESS); - } - return rc; -} - -int mdbx_dbi_flags_ex(MDBX_txn *txn, MDBX_dbi dbi, unsigned *flags, - unsigned *state) { - if (unlikely(!txn || !flags || !state)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - if (unlikely(!TXN_DBI_EXIST(txn, dbi, DB_VALID))) - return MDBX_EINVAL; - - *flags = txn->mt_dbs[dbi].md_flags & PERSISTENT_FLAGS; - *state = txn->mt_dbflags[dbi] & (DB_FRESH | DB_CREAT | DB_DIRTY | DB_STALE); - - return MDBX_SUCCESS; -} - -int mdbx_dbi_flags(MDBX_txn *txn, MDBX_dbi dbi, unsigned *flags) { - unsigned state; - return mdbx_dbi_flags_ex(txn, dbi, flags, &state); -} - -/* Add all the DB's pages to the free list. - * [in] mc Cursor on the DB to free. - * [in] subs non-Zero to check for sub-DBs in this DB. - * Returns 0 on success, non-zero on failure. */ -static int mdbx_drop0(MDBX_cursor *mc, int subs) { - int rc; - - rc = mdbx_page_search(mc, NULL, MDBX_PS_FIRST); - if (likely(rc == MDBX_SUCCESS)) { - MDBX_txn *txn = mc->mc_txn; - MDBX_node *ni; - MDBX_cursor mx; - unsigned i; - - /* DUPSORT sub-DBs have no ovpages/DBs. Omit scanning leaves. - * This also avoids any P_LEAF2 pages, which have no nodes. - * Also if the DB doesn't have sub-DBs and has no overflow - * pages, omit scanning leaves. */ - if ((mc->mc_flags & C_SUB) || (!subs && !mc->mc_db->md_overflow_pages)) - mdbx_cursor_pop(mc); - - mdbx_cursor_copy(mc, &mx); - while (mc->mc_snum > 0) { - MDBX_page *mp = mc->mc_pg[mc->mc_top]; - unsigned n = NUMKEYS(mp); - if (IS_LEAF(mp)) { - for (i = 0; i < n; i++) { - ni = NODEPTR(mp, i); - if (ni->mn_flags & F_BIGDATA) { - MDBX_page *omp; - pgno_t pg; - memcpy(&pg, NODEDATA(ni), sizeof(pg)); - rc = mdbx_page_get(mc, pg, &omp, NULL); - if (unlikely(rc)) - goto done; - mdbx_cassert(mc, IS_OVERFLOW(omp)); - rc = - mdbx_pnl_append_range(&txn->mt_befree_pages, pg, omp->mp_pages); - if (unlikely(rc)) - goto done; - mc->mc_db->md_overflow_pages -= omp->mp_pages; - if (!mc->mc_db->md_overflow_pages && !subs) - break; - } else if (subs && (ni->mn_flags & F_SUBDATA)) { - rc = mdbx_xcursor_init1(mc, ni); - if (unlikely(rc != MDBX_SUCCESS)) - goto done; - rc = mdbx_drop0(&mc->mc_xcursor->mx_cursor, 0); - if (unlikely(rc)) - goto done; - } - } - if (!subs && !mc->mc_db->md_overflow_pages) - goto pop; - } else { - if (unlikely((rc = mdbx_pnl_need(&txn->mt_befree_pages, n)) != 0)) - goto done; - for (i = 0; i < n; i++) { - pgno_t pg; - ni = NODEPTR(mp, i); - pg = NODEPGNO(ni); - /* free it */ - mdbx_pnl_xappend(txn->mt_befree_pages, pg); - } - } - if (!mc->mc_top) - break; - mdbx_cassert(mc, i <= UINT16_MAX); - mc->mc_ki[mc->mc_top] = (indx_t)i; - rc = mdbx_cursor_sibling(mc, 1); - if (rc) { - if (unlikely(rc != MDBX_NOTFOUND)) - goto done; - /* no more siblings, go back to beginning - * of previous level. */ - pop: - mdbx_cursor_pop(mc); - mc->mc_ki[0] = 0; - for (i = 1; i < mc->mc_snum; i++) { - mc->mc_ki[i] = 0; - mc->mc_pg[i] = mx.mc_pg[i]; - } - } - } - /* free it */ - rc = mdbx_pnl_append(&txn->mt_befree_pages, mc->mc_db->md_root); - done: - if (unlikely(rc)) - txn->mt_flags |= MDBX_TXN_ERROR; - } else if (rc == MDBX_NOTFOUND) { - rc = MDBX_SUCCESS; - } - mc->mc_flags &= ~C_INITIALIZED; - return rc; -} - -int mdbx_drop(MDBX_txn *txn, MDBX_dbi dbi, int del) { - if (unlikely(1 < (unsigned)del || !txn)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - if (unlikely(!TXN_DBI_EXIST(txn, dbi, DB_USRVALID))) - return MDBX_EINVAL; - - if (unlikely(TXN_DBI_CHANGED(txn, dbi))) - return MDBX_BAD_DBI; - - if (unlikely(F_ISSET(txn->mt_flags, MDBX_TXN_RDONLY))) - return MDBX_EACCESS; - - MDBX_cursor *mc; - int rc = mdbx_cursor_open(txn, dbi, &mc); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - - MDBX_env *env = txn->mt_env; - rc = mdbx_fastmutex_acquire(&env->me_dbi_lock); - if (unlikely(rc != MDBX_SUCCESS)) { - mdbx_cursor_close(mc); - return rc; - } - - if (unlikely(!TXN_DBI_EXIST(txn, dbi, DB_USRVALID))) { - rc = MDBX_EINVAL; - goto bailout; - } - - if (unlikely(TXN_DBI_CHANGED(txn, dbi))) { - rc = MDBX_BAD_DBI; - goto bailout; - } - - rc = mdbx_drop0(mc, mc->mc_db->md_flags & MDBX_DUPSORT); - /* Invalidate the dropped DB's cursors */ - for (MDBX_cursor *m2 = txn->mt_cursors[dbi]; m2; m2 = m2->mc_next) - m2->mc_flags &= ~(C_INITIALIZED | C_EOF); - if (unlikely(rc)) - goto bailout; - - /* Can't delete the main DB */ - if (del && dbi >= CORE_DBS) { - rc = mdbx_del0(txn, MAIN_DBI, &mc->mc_dbx->md_name, NULL, F_SUBDATA); - if (likely(!rc)) { - txn->mt_dbflags[dbi] = DB_STALE; - mdbx_dbi_close_locked(env, dbi); - } else { - txn->mt_flags |= MDBX_TXN_ERROR; - } - } else { - /* reset the DB record, mark it dirty */ - txn->mt_dbflags[dbi] |= DB_DIRTY; - txn->mt_dbs[dbi].md_depth = 0; - txn->mt_dbs[dbi].md_branch_pages = 0; - txn->mt_dbs[dbi].md_leaf_pages = 0; - txn->mt_dbs[dbi].md_overflow_pages = 0; - txn->mt_dbs[dbi].md_entries = 0; - txn->mt_dbs[dbi].md_root = P_INVALID; - txn->mt_dbs[dbi].md_seq = 0; - - txn->mt_flags |= MDBX_TXN_DIRTY; - } - -bailout: - mdbx_cursor_close(mc); - mdbx_ensure(env, mdbx_fastmutex_release(&env->me_dbi_lock) == MDBX_SUCCESS); - return rc; -} - -int mdbx_set_compare(MDBX_txn *txn, MDBX_dbi dbi, MDBX_cmp_func *cmp) { - if (unlikely(!txn)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - if (unlikely(!TXN_DBI_EXIST(txn, dbi, DB_USRVALID))) - return MDBX_EINVAL; - - txn->mt_dbxs[dbi].md_cmp = cmp; - return MDBX_SUCCESS; -} - -int mdbx_set_dupsort(MDBX_txn *txn, MDBX_dbi dbi, MDBX_cmp_func *cmp) { - if (unlikely(!txn)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - if (unlikely(!TXN_DBI_EXIST(txn, dbi, DB_USRVALID))) - return MDBX_EINVAL; - - txn->mt_dbxs[dbi].md_dcmp = cmp; - return MDBX_SUCCESS; -} - -int __cold mdbx_reader_list(MDBX_env *env, MDBX_msg_func *func, void *ctx) { - char buf[64]; - int rc = 0, first = 1; - - if (unlikely(!env || !func)) - return -MDBX_EINVAL; - - if (unlikely(env->me_signature != MDBX_ME_SIGNATURE)) - return MDBX_EBADSIGN; - - const MDBX_lockinfo *const lck = env->me_lck; - if (likely(lck)) { - const unsigned snap_nreaders = lck->mti_numreaders; - for (unsigned i = 0; i < snap_nreaders; i++) { - if (lck->mti_readers[i].mr_pid) { - const txnid_t txnid = lck->mti_readers[i].mr_txnid; - if (txnid == ~(txnid_t)0) - snprintf(buf, sizeof(buf), "%10" PRIuPTR " %" PRIxPTR " -\n", - (uintptr_t)lck->mti_readers[i].mr_pid, - (uintptr_t)lck->mti_readers[i].mr_tid); - else - snprintf(buf, sizeof(buf), - "%10" PRIuPTR " %" PRIxPTR " %" PRIaTXN "\n", - (uintptr_t)lck->mti_readers[i].mr_pid, - (uintptr_t)lck->mti_readers[i].mr_tid, txnid); - - if (first) { - first = 0; - rc = func(" pid thread txnid\n", ctx); - if (rc < 0) - break; - } - rc = func(buf, ctx); - if (rc < 0) - break; - } - } - } - if (first) - rc = func("(no active readers)\n", ctx); - - return rc; -} - -/* Insert pid into list if not already present. - * return -1 if already present. */ -static int __cold mdbx_pid_insert(mdbx_pid_t *ids, mdbx_pid_t pid) { - /* binary search of pid in list */ - unsigned base = 0; - unsigned cursor = 1; - int val = 0; - unsigned n = ids[0]; - - while (n > 0) { - unsigned pivot = n >> 1; - cursor = base + pivot + 1; - val = pid - ids[cursor]; - - if (val < 0) { - n = pivot; - } else if (val > 0) { - base = cursor; - n -= pivot + 1; - } else { - /* found, so it's a duplicate */ - return -1; - } - } - - if (val > 0) - ++cursor; - - ids[0]++; - for (n = ids[0]; n > cursor; n--) - ids[n] = ids[n - 1]; - ids[n] = pid; - return 0; -} - -int __cold mdbx_reader_check(MDBX_env *env, int *dead) { - if (unlikely(!env || env->me_signature != MDBX_ME_SIGNATURE)) - return MDBX_EINVAL; - if (dead) - *dead = 0; - return mdbx_reader_check0(env, false, dead); -} - -/* Return: - * MDBX_RESULT_TRUE - done and mutex recovered - * MDBX_SUCCESS - done - * Otherwise errcode. */ -int __cold mdbx_reader_check0(MDBX_env *env, int rdt_locked, int *dead) { - assert(rdt_locked >= 0); - - if (unlikely(env->me_pid != mdbx_getpid())) { - env->me_flags |= MDBX_FATAL_ERROR; - return MDBX_PANIC; - } - - MDBX_lockinfo *const lck = env->me_lck; - if (unlikely(lck == NULL)) { - /* exclusive mode */ - if (dead) - *dead = 0; - return MDBX_SUCCESS; - } - - const unsigned snap_nreaders = lck->mti_numreaders; - mdbx_pid_t *pids = alloca((snap_nreaders + 1) * sizeof(mdbx_pid_t)); - pids[0] = 0; - - int rc = MDBX_SUCCESS, count = 0; - for (unsigned i = 0; i < snap_nreaders; i++) { - const mdbx_pid_t pid = lck->mti_readers[i].mr_pid; - if (pid == 0) - continue /* skip empty */; - if (pid == env->me_pid) - continue /* skip self */; - if (mdbx_pid_insert(pids, pid) != 0) - continue /* such pid already processed */; - - int err = mdbx_rpid_check(env, pid); - if (err == MDBX_RESULT_TRUE) - continue /* reader is live */; - - if (err != MDBX_SUCCESS) { - rc = err; - break /* mdbx_rpid_check() failed */; - } - - /* stale reader found */ - if (!rdt_locked) { - err = mdbx_rdt_lock(env); - if (MDBX_IS_ERROR(err)) { - rc = err; - break; - } - - rdt_locked = -1; - if (err == MDBX_RESULT_TRUE) { - /* mutex recovered, the mdbx_mutex_failed() checked all readers */ - rc = MDBX_RESULT_TRUE; - break; - } - - /* a other process may have clean and reused slot, recheck */ - if (lck->mti_readers[i].mr_pid != pid) - continue; - - err = mdbx_rpid_check(env, pid); - if (MDBX_IS_ERROR(err)) { - rc = err; - break; - } - - if (err != MDBX_SUCCESS) - continue /* the race with other process, slot reused */; - } - - /* clean it */ - for (unsigned j = i; j < snap_nreaders; j++) { - if (lck->mti_readers[j].mr_pid == pid) { - mdbx_debug("clear stale reader pid %" PRIuPTR " txn %" PRIaTXN "", - (size_t)pid, lck->mti_readers[j].mr_txnid); - lck->mti_readers[j].mr_pid = 0; - lck->mti_readers_refresh_flag = true; - count++; - } - } - } - - if (rdt_locked < 0) - mdbx_rdt_unlock(env); - - if (dead) - *dead = count; - return rc; -} - -int __cold mdbx_setup_debug(int flags, MDBX_debug_func *logger) { - unsigned ret = mdbx_runtime_flags; - mdbx_runtime_flags = flags; - -#ifdef __linux__ - if (flags & MDBX_DBG_DUMP) { - int core_filter_fd = open("/proc/self/coredump_filter", O_TRUNC | O_RDWR); - if (core_filter_fd >= 0) { - char buf[32]; - const unsigned r = pread(core_filter_fd, buf, sizeof(buf), 0); - if (r > 0 && r < sizeof(buf)) { - buf[r] = 0; - unsigned long mask = strtoul(buf, NULL, 16); - if (mask != ULONG_MAX) { - mask |= 1 << 3 /* Dump file-backed shared mappings */; - mask |= 1 << 6 /* Dump shared huge pages */; - mask |= 1 << 8 /* Dump shared DAX pages */; - unsigned w = snprintf(buf, sizeof(buf), "0x%lx\n", mask); - if (w > 0 && w < sizeof(buf)) { - w = pwrite(core_filter_fd, buf, w, 0); - (void)w; - } - } - } - close(core_filter_fd); - } - } -#endif /* __linux__ */ - - mdbx_debug_logger = logger; - return ret; -} - -static txnid_t __cold mdbx_oomkick(MDBX_env *env, const txnid_t laggard) { - mdbx_debug("DB size maxed out"); - - int retry; - for (retry = 0; retry < INT_MAX; ++retry) { - txnid_t oldest = mdbx_reclaiming_detent(env); - mdbx_assert(env, oldest < env->me_txn0->mt_txnid); - mdbx_assert(env, oldest >= laggard); - mdbx_assert(env, oldest >= env->me_oldest[0]); - if (oldest == laggard || unlikely(env->me_lck == NULL /* exclusive mode */)) - return oldest; - - if (MDBX_IS_ERROR(mdbx_reader_check0(env, false, NULL))) - break; - - MDBX_reader *const rtbl = env->me_lck->mti_readers; - MDBX_reader *asleep = nullptr; - for (int i = env->me_lck->mti_numreaders; --i >= 0;) { - if (rtbl[i].mr_pid) { - mdbx_jitter4testing(true); - const txnid_t snap = rtbl[i].mr_txnid; - if (oldest > snap && laggard <= /* ignore pending updates */ snap) { - oldest = snap; - asleep = &rtbl[i]; - } - } - } - - if (laggard < oldest || !asleep) { - if (retry && env->me_oom_func) { - /* LY: notify end of oom-loop */ - const txnid_t gap = oldest - laggard; - env->me_oom_func(env, 0, 0, laggard, - (gap < UINT_MAX) ? (unsigned)gap : UINT_MAX, -retry); - } - mdbx_notice("oom-kick: update oldest %" PRIaTXN " -> %" PRIaTXN, - env->me_oldest[0], oldest); - mdbx_assert(env, env->me_oldest[0] <= oldest); - return env->me_oldest[0] = oldest; - } - - mdbx_tid_t tid; - mdbx_pid_t pid; - int rc; - - if (!env->me_oom_func) - break; - - pid = asleep->mr_pid; - tid = asleep->mr_tid; - if (asleep->mr_txnid != laggard || pid <= 0) - continue; - - const txnid_t gap = - mdbx_meta_txnid_stable(env, mdbx_meta_head(env)) - laggard; - rc = env->me_oom_func(env, pid, tid, laggard, - (gap < UINT_MAX) ? (unsigned)gap : UINT_MAX, retry); - if (rc < 0) - break; - - if (rc) { - asleep->mr_txnid = ~(txnid_t)0; - env->me_lck->mti_readers_refresh_flag = true; - if (rc > 1) { - asleep->mr_tid = 0; - asleep->mr_pid = 0; - mdbx_coherent_barrier(); - } - } - } - - if (retry && env->me_oom_func) { - /* LY: notify end of oom-loop */ - env->me_oom_func(env, 0, 0, laggard, 0, -retry); - } - return mdbx_find_oldest(env->me_txn); -} - -int __cold mdbx_env_set_syncbytes(MDBX_env *env, size_t bytes) { - if (unlikely(!env)) - return MDBX_EINVAL; - - if (unlikely(env->me_signature != MDBX_ME_SIGNATURE)) - return MDBX_EBADSIGN; - - env->me_sync_threshold = bytes; - return env->me_map ? mdbx_env_sync(env, false) : MDBX_SUCCESS; -} - -int __cold mdbx_env_set_oomfunc(MDBX_env *env, MDBX_oom_func *oomfunc) { - if (unlikely(!env)) - return MDBX_EINVAL; - - if (unlikely(env->me_signature != MDBX_ME_SIGNATURE)) - return MDBX_EBADSIGN; - - env->me_oom_func = oomfunc; - return MDBX_SUCCESS; -} - -MDBX_oom_func *__cold mdbx_env_get_oomfunc(MDBX_env *env) { - return likely(env && env->me_signature == MDBX_ME_SIGNATURE) - ? env->me_oom_func - : NULL; -} - -#ifdef __SANITIZE_THREAD__ -/* LY: avoid tsan-trap by me_txn, mm_last_pg and mt_next_pgno */ -__attribute__((no_sanitize_thread, noinline)) -#endif -int mdbx_txn_straggler(MDBX_txn *txn, int *percent) -{ - if (unlikely(!txn)) - return -MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - MDBX_env *env = txn->mt_env; - if (unlikely((txn->mt_flags & MDBX_RDONLY) == 0)) { - if (percent) - *percent = - (int)((txn->mt_next_pgno * UINT64_C(100) + txn->mt_end_pgno / 2) / - txn->mt_end_pgno); - return -1; - } - - txnid_t recent; - MDBX_meta *meta; - do { - meta = mdbx_meta_head(env); - recent = mdbx_meta_txnid_fluid(env, meta); - if (percent) { - const pgno_t maxpg = meta->mm_geo.now; - *percent = (int)((meta->mm_geo.next * UINT64_C(100) + maxpg / 2) / maxpg); - } - } while (unlikely(recent != mdbx_meta_txnid_fluid(env, meta))); - - txnid_t lag = recent - txn->mt_ro_reader->mr_txnid; - return (lag > INT_MAX) ? INT_MAX : (int)lag; -} - -typedef struct mdbx_walk_ctx { - MDBX_txn *mw_txn; - void *mw_user; - MDBX_pgvisitor_func *mw_visitor; -} mdbx_walk_ctx_t; - -/* Depth-first tree traversal. */ -static int __cold mdbx_env_walk(mdbx_walk_ctx_t *ctx, const char *dbi, - pgno_t pg, int deep) { - MDBX_page *mp; - int rc, i, nkeys; - size_t header_size, unused_size, payload_size, align_bytes; - const char *type; - - if (pg == P_INVALID) - return MDBX_SUCCESS; /* empty db */ - - MDBX_cursor mc; - memset(&mc, 0, sizeof(mc)); - mc.mc_snum = 1; - mc.mc_txn = ctx->mw_txn; - - rc = mdbx_page_get(&mc, pg, &mp, NULL); - if (rc) - return rc; - if (pg != mp->mp_pgno) - return MDBX_CORRUPTED; - - nkeys = NUMKEYS(mp); - header_size = IS_LEAF2(mp) ? PAGEHDRSZ : PAGEHDRSZ + mp->mp_lower; - unused_size = SIZELEFT(mp); - payload_size = 0; - - /* LY: Don't use mask here, e.g bitwise - * (P_BRANCH|P_LEAF|P_LEAF2|P_META|P_OVERFLOW|P_SUBP). - * Pages should not me marked dirty/loose or otherwise. */ - switch (mp->mp_flags) { - case P_BRANCH: - type = "branch"; - if (nkeys < 1) - return MDBX_CORRUPTED; - break; - case P_LEAF: - type = "leaf"; - break; - case P_LEAF | P_SUBP: - type = "dupsort-subleaf"; - break; - case P_LEAF | P_LEAF2: - type = "dupfixed-leaf"; - break; - case P_LEAF | P_LEAF2 | P_SUBP: - type = "dupsort-dupfixed-subleaf"; - break; - case P_META: - case P_OVERFLOW: - __fallthrough; - default: - return MDBX_CORRUPTED; - } - - for (align_bytes = i = 0; i < nkeys; - align_bytes += ((payload_size + align_bytes) & 1), i++) { - MDBX_node *node; - - if (IS_LEAF2(mp)) { - /* LEAF2 pages have no mp_ptrs[] or node headers */ - payload_size += mp->mp_leaf2_ksize; - continue; - } - - node = NODEPTR(mp, i); - payload_size += NODESIZE + node->mn_ksize; - - if (IS_BRANCH(mp)) { - rc = mdbx_env_walk(ctx, dbi, NODEPGNO(node), deep); - if (rc) - return rc; - continue; - } - - assert(IS_LEAF(mp)); - if (node->mn_flags & F_BIGDATA) { - MDBX_page *omp; - pgno_t *opg; - size_t over_header, over_payload, over_unused; - - payload_size += sizeof(pgno_t); - opg = NODEDATA(node); - rc = mdbx_page_get(&mc, *opg, &omp, NULL); - if (rc) - return rc; - if (*opg != omp->mp_pgno) - return MDBX_CORRUPTED; - /* LY: Don't use mask here, e.g bitwise - * (P_BRANCH|P_LEAF|P_LEAF2|P_META|P_OVERFLOW|P_SUBP). - * Pages should not me marked dirty/loose or otherwise. */ - if (P_OVERFLOW != omp->mp_flags) - return MDBX_CORRUPTED; - - over_header = PAGEHDRSZ; - over_payload = NODEDSZ(node); - over_unused = pgno2bytes(ctx->mw_txn->mt_env, omp->mp_pages) - - over_payload - over_header; - - rc = ctx->mw_visitor(*opg, omp->mp_pages, ctx->mw_user, dbi, - "overflow-data", 1, over_payload, over_header, - over_unused); - if (rc) - return rc; - continue; - } - - payload_size += NODEDSZ(node); - if (node->mn_flags & F_SUBDATA) { - MDBX_db *db = NODEDATA(node); - char *name = NULL; - - if (!(node->mn_flags & F_DUPDATA)) { - name = NODEKEY(node); - ptrdiff_t namelen = (char *)db - name; - name = memcpy(alloca(namelen + 1), name, namelen); - name[namelen] = 0; - } - rc = mdbx_env_walk(ctx, (name && name[0]) ? name : dbi, db->md_root, - deep + 1); - if (rc) - return rc; - } - } - - return ctx->mw_visitor(mp->mp_pgno, 1, ctx->mw_user, dbi, type, nkeys, - payload_size, header_size, unused_size + align_bytes); -} - -int __cold mdbx_env_pgwalk(MDBX_txn *txn, MDBX_pgvisitor_func *visitor, - void *user) { - if (unlikely(!txn)) - return MDBX_BAD_TXN; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - mdbx_walk_ctx_t ctx; - ctx.mw_txn = txn; - ctx.mw_user = user; - ctx.mw_visitor = visitor; - - int rc = visitor(0, NUM_METAS, user, "meta", "meta", NUM_METAS, - sizeof(MDBX_meta) * NUM_METAS, PAGEHDRSZ * NUM_METAS, - (txn->mt_env->me_psize - sizeof(MDBX_meta) - PAGEHDRSZ) * - NUM_METAS); - if (!rc) - rc = mdbx_env_walk(&ctx, "free", txn->mt_dbs[FREE_DBI].md_root, 0); - if (!rc) - rc = mdbx_env_walk(&ctx, "main", txn->mt_dbs[MAIN_DBI].md_root, 0); - if (!rc) - rc = visitor(P_INVALID, 0, user, NULL, NULL, 0, 0, 0, 0); - return rc; -} - -int mdbx_canary_put(MDBX_txn *txn, const mdbx_canary *canary) { - if (unlikely(!txn)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - if (unlikely(txn->mt_flags & MDBX_TXN_BLOCKED)) - return MDBX_BAD_TXN; - - if (unlikely(F_ISSET(txn->mt_flags, MDBX_TXN_RDONLY))) - return MDBX_EACCESS; - - if (likely(canary)) { - if (txn->mt_canary.x == canary->x && txn->mt_canary.y == canary->y && - txn->mt_canary.z == canary->z) - return MDBX_SUCCESS; - txn->mt_canary.x = canary->x; - txn->mt_canary.y = canary->y; - txn->mt_canary.z = canary->z; - } - txn->mt_canary.v = txn->mt_txnid; - - if ((txn->mt_flags & MDBX_TXN_DIRTY) == 0) { - MDBX_env *env = txn->mt_env; - txn->mt_flags |= MDBX_TXN_DIRTY; - env->me_sync_pending += env->me_psize; - } - - return MDBX_SUCCESS; -} - -int mdbx_canary_get(MDBX_txn *txn, mdbx_canary *canary) { - if (unlikely(txn == NULL || canary == NULL)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - *canary = txn->mt_canary; - return MDBX_SUCCESS; -} - -int mdbx_cursor_on_first(MDBX_cursor *mc) { - if (unlikely(mc == NULL)) - return MDBX_EINVAL; - - if (unlikely(mc->mc_signature != MDBX_MC_SIGNATURE)) - return MDBX_EBADSIGN; - - if (!(mc->mc_flags & C_INITIALIZED)) - return MDBX_RESULT_FALSE; - - for (unsigned i = 0; i < mc->mc_snum; ++i) { - if (mc->mc_ki[i]) - return MDBX_RESULT_FALSE; - } - - return MDBX_RESULT_TRUE; -} - -int mdbx_cursor_on_last(MDBX_cursor *mc) { - if (unlikely(mc == NULL)) - return MDBX_EINVAL; - - if (unlikely(mc->mc_signature != MDBX_MC_SIGNATURE)) - return MDBX_EBADSIGN; - - if (!(mc->mc_flags & C_INITIALIZED)) - return MDBX_RESULT_FALSE; - - for (unsigned i = 0; i < mc->mc_snum; ++i) { - unsigned nkeys = NUMKEYS(mc->mc_pg[i]); - if (mc->mc_ki[i] < nkeys - 1) - return MDBX_RESULT_FALSE; - } - - return MDBX_RESULT_TRUE; -} - -int mdbx_cursor_eof(MDBX_cursor *mc) { - if (unlikely(mc == NULL)) - return MDBX_EINVAL; - - if (unlikely(mc->mc_signature != MDBX_MC_SIGNATURE)) - return MDBX_EBADSIGN; - - if ((mc->mc_flags & C_INITIALIZED) == 0) - return MDBX_RESULT_TRUE; - - if (mc->mc_snum == 0) - return MDBX_RESULT_TRUE; - - if ((mc->mc_flags & C_EOF) && - mc->mc_ki[mc->mc_top] >= NUMKEYS(mc->mc_pg[mc->mc_top])) - return MDBX_RESULT_TRUE; - - return MDBX_RESULT_FALSE; -} - -static int mdbx_is_samedata(const MDBX_val *a, const MDBX_val *b) { - return a->iov_len == b->iov_len && - memcmp(a->iov_base, b->iov_base, a->iov_len) == 0; -} - -/* Позволяет обновить или удалить существующую запись с получением - * в old_data предыдущего значения данных. При этом если new_data равен - * нулю, то выполняется удаление, иначе обновление/вставка. - * - * Текущее значение может находиться в уже измененной (грязной) странице. - * В этом случае страница будет перезаписана при обновлении, а само старое - * значение утрачено. Поэтому исходно в old_data должен быть передан - * дополнительный буфер для копирования старого значения. - * Если переданный буфер слишком мал, то функция вернет -1, установив - * old_data->iov_len в соответствующее значение. - * - * Для не-уникальных ключей также возможен второй сценарий использования, - * когда посредством old_data из записей с одинаковым ключом для - * удаления/обновления выбирается конкретная. Для выбора этого сценария - * во flags следует одновременно указать MDBX_CURRENT и MDBX_NOOVERWRITE. - * Именно эта комбинация выбрана, так как она лишена смысла, и этим позволяет - * идентифицировать запрос такого сценария. - * - * Функция может быть замещена соответствующими операциями с курсорами - * после двух доработок (TODO): - * - внешняя аллокация курсоров, в том числе на стеке (без malloc). - * - получения статуса страницы по адресу (знать о P_DIRTY). - */ -int mdbx_replace(MDBX_txn *txn, MDBX_dbi dbi, MDBX_val *key, MDBX_val *new_data, - MDBX_val *old_data, unsigned flags) { - if (unlikely(!key || !old_data || !txn || old_data == new_data)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - if (unlikely(old_data->iov_base == NULL && old_data->iov_len)) - return MDBX_EINVAL; - - if (unlikely(new_data == NULL && !(flags & MDBX_CURRENT))) - return MDBX_EINVAL; - - if (unlikely(!TXN_DBI_EXIST(txn, dbi, DB_USRVALID))) - return MDBX_EINVAL; - - if (unlikely(flags & ~(MDBX_NOOVERWRITE | MDBX_NODUPDATA | MDBX_RESERVE | - MDBX_APPEND | MDBX_APPENDDUP | MDBX_CURRENT))) - return MDBX_EINVAL; - - if (unlikely(txn->mt_flags & (MDBX_TXN_RDONLY | MDBX_TXN_BLOCKED))) - return (txn->mt_flags & MDBX_TXN_RDONLY) ? MDBX_EACCESS : MDBX_BAD_TXN; - - MDBX_cursor mc; - MDBX_xcursor mx; - int rc = mdbx_cursor_init(&mc, txn, dbi, &mx); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - mc.mc_next = txn->mt_cursors[dbi]; - txn->mt_cursors[dbi] = &mc; - - MDBX_val present_key = *key; - if (F_ISSET(flags, MDBX_CURRENT | MDBX_NOOVERWRITE)) { - /* в old_data значение для выбора конкретного дубликата */ - if (unlikely(!(txn->mt_dbs[dbi].md_flags & MDBX_DUPSORT))) { - rc = MDBX_EINVAL; - goto bailout; - } - - /* убираем лишний бит, он был признаком запрошенного режима */ - flags -= MDBX_NOOVERWRITE; - - rc = mdbx_cursor_get(&mc, &present_key, old_data, MDBX_GET_BOTH); - if (rc != MDBX_SUCCESS) - goto bailout; - - if (new_data) { - /* обновление конкретного дубликата */ - if (mdbx_is_samedata(old_data, new_data)) - /* если данные совпадают, то ничего делать не надо */ - goto bailout; - } - } else { - /* в old_data буфер для сохранения предыдущего значения */ - if (unlikely(new_data && old_data->iov_base == new_data->iov_base)) - return MDBX_EINVAL; - MDBX_val present_data; - rc = mdbx_cursor_get(&mc, &present_key, &present_data, MDBX_SET_KEY); - if (unlikely(rc != MDBX_SUCCESS)) { - old_data->iov_base = NULL; - old_data->iov_len = rc; - if (rc != MDBX_NOTFOUND || (flags & MDBX_CURRENT)) - goto bailout; - } else if (flags & MDBX_NOOVERWRITE) { - rc = MDBX_KEYEXIST; - *old_data = present_data; - goto bailout; - } else { - MDBX_page *page = mc.mc_pg[mc.mc_top]; - if (txn->mt_dbs[dbi].md_flags & MDBX_DUPSORT) { - if (flags & MDBX_CURRENT) { - /* для не-уникальных ключей позволяем update/delete только если ключ - * один */ - MDBX_node *leaf = NODEPTR(page, mc.mc_ki[mc.mc_top]); - if (F_ISSET(leaf->mn_flags, F_DUPDATA)) { - mdbx_tassert(txn, XCURSOR_INITED(&mc) && - mc.mc_xcursor->mx_db.md_entries > 1); - if (mc.mc_xcursor->mx_db.md_entries > 1) { - rc = MDBX_EMULTIVAL; - goto bailout; - } - } - /* если данные совпадают, то ничего делать не надо */ - if (new_data && mdbx_is_samedata(&present_data, new_data)) { - *old_data = *new_data; - goto bailout; - } - /* В оригинальной LMDB фладок MDBX_CURRENT здесь приведет - * к замене данных без учета MDBX_DUPSORT сортировки, - * но здесь это в любом случае допустимо, так как мы - * проверили что для ключа есть только одно значение. */ - } else if ((flags & MDBX_NODUPDATA) && - mdbx_is_samedata(&present_data, new_data)) { - /* если данные совпадают и установлен MDBX_NODUPDATA */ - rc = MDBX_KEYEXIST; - goto bailout; - } - } else { - /* если данные совпадают, то ничего делать не надо */ - if (new_data && mdbx_is_samedata(&present_data, new_data)) { - *old_data = *new_data; - goto bailout; - } - flags |= MDBX_CURRENT; - } - - if (page->mp_flags & P_DIRTY) { - if (unlikely(old_data->iov_len < present_data.iov_len)) { - old_data->iov_base = NULL; - old_data->iov_len = present_data.iov_len; - rc = MDBX_RESULT_TRUE; - goto bailout; - } - memcpy(old_data->iov_base, present_data.iov_base, present_data.iov_len); - old_data->iov_len = present_data.iov_len; - } else { - *old_data = present_data; - } - } - } - - if (likely(new_data)) - rc = mdbx_cursor_put(&mc, key, new_data, flags); - else - rc = mdbx_cursor_del(&mc, 0); - -bailout: - txn->mt_cursors[dbi] = mc.mc_next; - return rc; -} - -int mdbx_get_ex(MDBX_txn *txn, MDBX_dbi dbi, MDBX_val *key, MDBX_val *data, - size_t *values_count) { - DKBUF; - mdbx_debug("===> get db %u key [%s]", dbi, DKEY(key)); - - if (unlikely(!key || !data || !txn)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - if (unlikely(!TXN_DBI_EXIST(txn, dbi, DB_USRVALID))) - return MDBX_EINVAL; - - if (unlikely(txn->mt_flags & MDBX_TXN_BLOCKED)) - return MDBX_BAD_TXN; - - MDBX_cursor mc; - MDBX_xcursor mx; - int rc = mdbx_cursor_init(&mc, txn, dbi, &mx); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - - int exact = 0; - rc = mdbx_cursor_set(&mc, key, data, MDBX_SET_KEY, &exact); - if (unlikely(rc != MDBX_SUCCESS)) { - if (rc == MDBX_NOTFOUND && values_count) - *values_count = 0; - return rc; - } - - if (values_count) { - *values_count = 1; - if (mc.mc_xcursor != NULL) { - MDBX_node *leaf = NODEPTR(mc.mc_pg[mc.mc_top], mc.mc_ki[mc.mc_top]); - if (F_ISSET(leaf->mn_flags, F_DUPDATA)) { - mdbx_tassert(txn, mc.mc_xcursor == &mx && - (mx.mx_cursor.mc_flags & C_INITIALIZED)); - *values_count = (sizeof(*values_count) >= sizeof(mx.mx_db.md_entries) || - mx.mx_db.md_entries <= SIZE_MAX) - ? (size_t)mx.mx_db.md_entries - : SIZE_MAX; - } - } - } - return MDBX_SUCCESS; -} - -/* Функция сообщает находится ли указанный адрес в "грязной" странице у - * заданной пишущей транзакции. В конечном счете это позволяет избавиться от - * лишнего копирования данных из НЕ-грязных страниц. - * - * "Грязные" страницы - это те, которые уже были изменены в ходе пишущей - * транзакции. Соответственно, какие-либо дальнейшие изменения могут привести - * к перезаписи таких страниц. Поэтому все функции, выполняющие изменения, в - * качестве аргументов НЕ должны получать указатели на данные в таких - * страницах. В свою очередь "НЕ грязные" страницы перед модификацией будут - * скопированы. - * - * Другими словами, данные из "грязных" страниц должны быть либо скопированы - * перед передачей в качестве аргументов для дальнейших модификаций, либо - * отвергнуты на стадии проверки корректности аргументов. - * - * Таким образом, функция позволяет как избавится от лишнего копирования, - * так и выполнить более полную проверку аргументов. - * - * ВАЖНО: Передаваемый указатель должен указывать на начало данных. Только - * так гарантируется что актуальный заголовок страницы будет физически - * расположен в той-же странице памяти, в том числе для многостраничных - * P_OVERFLOW страниц с длинными данными. */ -int mdbx_is_dirty(const MDBX_txn *txn, const void *ptr) { - if (unlikely(!txn)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - if (unlikely(txn->mt_flags & MDBX_TXN_RDONLY)) - return MDBX_RESULT_FALSE; - - const MDBX_env *env = txn->mt_env; - const uintptr_t mask = ~(uintptr_t)(env->me_psize - 1); - const MDBX_page *page = (const MDBX_page *)((uintptr_t)ptr & mask); - - /* LY: Тут не всё хорошо с абсолютной достоверностью результата, - * так как флажок P_DIRTY в LMDB может означать не совсем то, - * что было исходно задумано, детали см в логике кода mdbx_page_touch(). - * - * Более того, в режиме БЕЗ WRITEMAP грязные страницы выделяются через - * malloc(), т.е. находятся вне mmap-диапазона и тогда чтобы отличить - * действительно грязную страницу от указателя на данные пользователя - * следует сканировать dirtylist, что накладно. - * - * Тем не менее, однозначно страница "не грязная" (не будет переписана - * во время транзакции) если адрес находится внутри mmap-диапазона - * и в заголовке страницы нет флажка P_DIRTY. */ - if (env->me_map < (uint8_t *)page) { - const size_t usedbytes = pgno2bytes(env, txn->mt_next_pgno); - if ((uint8_t *)page < env->me_map + usedbytes) { - /* страница внутри диапазона, смотрим на флажки */ - return (page->mp_flags & (P_DIRTY | P_LOOSE | P_KEEP)) - ? MDBX_RESULT_TRUE - : MDBX_RESULT_FALSE; - } - /* Гипотетически здесь возможна ситуация, когда указатель адресует что-то - * в пределах mmap, но за границей распределенных страниц. Это тяжелая - * ошибка, к которой не возможно прийти без каких-то больших нарушений. - * Поэтому не проверяем этот случай кроме как assert-ом, на то что - * страница вне mmap-диаппазона. */ - mdbx_tassert(txn, (uint8_t *)page >= env->me_map + env->me_mapsize); - } - - /* Страница вне используемого mmap-диапазона, т.е. либо в функцию был - * передан некорректный адрес, либо адрес в теневой странице, которая была - * выделена посредством malloc(). - * - * Для WRITE_MAP режима такая страница однозначно "не грязная", - * а для режимов без WRITE_MAP следует просматривать списки dirty - * и spilled страниц у каких-либо транзакций (в том числе дочерних). - * - * Поэтому для WRITE_MAP возвращаем false, а для остальных режимов - * всегда true. Такая логика имеет ряд преимуществ: - * - не тратим время на просмотр списков; - * - результат всегда безопасен (может быть ложно-положительным, - * но не ложно-отрицательным); - * - результат не зависит от вложенности транзакций и от относительного - * положения переданной транзакции в этой рекурсии. */ - return (env->me_flags & MDBX_WRITEMAP) ? MDBX_RESULT_FALSE : MDBX_RESULT_TRUE; -} - -int mdbx_dbi_sequence(MDBX_txn *txn, MDBX_dbi dbi, uint64_t *result, - uint64_t increment) { - if (unlikely(!txn)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_EBADSIGN; - - if (unlikely(txn->mt_owner != mdbx_thread_self())) - return MDBX_THREAD_MISMATCH; - - if (unlikely(!TXN_DBI_EXIST(txn, dbi, DB_USRVALID))) - return MDBX_EINVAL; - - if (unlikely(TXN_DBI_CHANGED(txn, dbi))) - return MDBX_BAD_DBI; - - MDBX_db *dbs = &txn->mt_dbs[dbi]; - if (likely(result)) - *result = dbs->md_seq; - - if (likely(increment > 0)) { - if (unlikely(txn->mt_flags & MDBX_TXN_BLOCKED)) - return MDBX_BAD_TXN; - - if (unlikely(F_ISSET(txn->mt_flags, MDBX_TXN_RDONLY))) - return MDBX_EACCESS; - - uint64_t new = dbs->md_seq + increment; - if (unlikely(new < increment)) - return MDBX_RESULT_TRUE; - - assert(new > dbs->md_seq); - dbs->md_seq = new; - txn->mt_flags |= MDBX_TXN_DIRTY; - txn->mt_dbflags[dbi] |= DB_DIRTY; - } - - return MDBX_SUCCESS; -} - -/*----------------------------------------------------------------------------*/ -/* attribute support functions for Nexenta */ - -static __inline int mdbx_attr_peek(MDBX_val *data, mdbx_attr_t *attrptr) { - if (unlikely(data->iov_len < sizeof(mdbx_attr_t))) - return MDBX_INCOMPATIBLE; - - if (likely(attrptr != NULL)) - *attrptr = *(mdbx_attr_t *)data->iov_base; - data->iov_len -= sizeof(mdbx_attr_t); - data->iov_base = - likely(data->iov_len > 0) ? ((mdbx_attr_t *)data->iov_base) + 1 : NULL; - - return MDBX_SUCCESS; -} - -static __inline int mdbx_attr_poke(MDBX_val *reserved, MDBX_val *data, - mdbx_attr_t attr, unsigned flags) { - mdbx_attr_t *space = reserved->iov_base; - if (flags & MDBX_RESERVE) { - if (likely(data != NULL)) { - data->iov_base = data->iov_len ? space + 1 : NULL; - } - } else { - *space = attr; - if (likely(data != NULL)) { - memcpy(space + 1, data->iov_base, data->iov_len); - } - } - - return MDBX_SUCCESS; -} - -int mdbx_cursor_get_attr(MDBX_cursor *mc, MDBX_val *key, MDBX_val *data, - mdbx_attr_t *attrptr, MDBX_cursor_op op) { - int rc = mdbx_cursor_get(mc, key, data, op); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - - return mdbx_attr_peek(data, attrptr); -} - -int mdbx_get_attr(MDBX_txn *txn, MDBX_dbi dbi, MDBX_val *key, MDBX_val *data, - uint64_t *attrptr) { - int rc = mdbx_get(txn, dbi, key, data); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - - return mdbx_attr_peek(data, attrptr); -} - -int mdbx_put_attr(MDBX_txn *txn, MDBX_dbi dbi, MDBX_val *key, MDBX_val *data, - mdbx_attr_t attr, unsigned flags) { - MDBX_val reserve; - reserve.iov_base = NULL; - reserve.iov_len = (data ? data->iov_len : 0) + sizeof(mdbx_attr_t); - - int rc = mdbx_put(txn, dbi, key, &reserve, flags | MDBX_RESERVE); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - - return mdbx_attr_poke(&reserve, data, attr, flags); -} - -int mdbx_cursor_put_attr(MDBX_cursor *cursor, MDBX_val *key, MDBX_val *data, - mdbx_attr_t attr, unsigned flags) { - MDBX_val reserve; - reserve.iov_base = NULL; - reserve.iov_len = (data ? data->iov_len : 0) + sizeof(mdbx_attr_t); - - int rc = mdbx_cursor_put(cursor, key, &reserve, flags | MDBX_RESERVE); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - - return mdbx_attr_poke(&reserve, data, attr, flags); -} - -int mdbx_set_attr(MDBX_txn *txn, MDBX_dbi dbi, MDBX_val *key, MDBX_val *data, - mdbx_attr_t attr) { - if (unlikely(!key || !txn)) - return MDBX_EINVAL; - - if (unlikely(txn->mt_signature != MDBX_MT_SIGNATURE)) - return MDBX_VERSION_MISMATCH; - - if (unlikely(!TXN_DBI_EXIST(txn, dbi, DB_USRVALID))) - return MDBX_EINVAL; - - if (unlikely(txn->mt_flags & (MDBX_TXN_RDONLY | MDBX_TXN_BLOCKED))) - return (txn->mt_flags & MDBX_TXN_RDONLY) ? MDBX_EACCESS : MDBX_BAD_TXN; - - MDBX_cursor mc; - MDBX_xcursor mx; - MDBX_val old_data; - int rc = mdbx_cursor_init(&mc, txn, dbi, &mx); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - rc = mdbx_cursor_set(&mc, key, &old_data, MDBX_SET, NULL); - if (unlikely(rc != MDBX_SUCCESS)) { - if (rc == MDBX_NOTFOUND && data) { - mc.mc_next = txn->mt_cursors[dbi]; - txn->mt_cursors[dbi] = &mc; - rc = mdbx_cursor_put_attr(&mc, key, data, attr, 0); - txn->mt_cursors[dbi] = mc.mc_next; - } - return rc; - } - - mdbx_attr_t old_attr = 0; - rc = mdbx_attr_peek(&old_data, &old_attr); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - - if (old_attr == attr && (!data || (data->iov_len == old_data.iov_len && - memcmp(data->iov_base, old_data.iov_base, - old_data.iov_len) == 0))) - return MDBX_SUCCESS; - - mc.mc_next = txn->mt_cursors[dbi]; - txn->mt_cursors[dbi] = &mc; - rc = mdbx_cursor_put_attr(&mc, key, data ? data : &old_data, attr, - MDBX_CURRENT); - txn->mt_cursors[dbi] = mc.mc_next; - return rc; -} - -//---------------------------------------------------------------------------- - -#ifdef __SANITIZE_ADDRESS__ -LIBMDBX_API __attribute__((weak)) const char *__asan_default_options() { - return "symbolize=1:allow_addr2line=1:" -#ifdef _DEBUG - "debug=1:" -#endif /* _DEBUG */ - "report_globals=1:" - "replace_str=1:replace_intrin=1:" - "malloc_context_size=9:" - "detect_leaks=1:" - "check_printf=1:" - "detect_deadlocks=1:" -#ifndef LTO_ENABLED - "check_initialization_order=1:" -#endif - "detect_stack_use_after_return=1:" - "intercept_tls_get_addr=1:" - "decorate_proc_maps=1:" - "abort_on_error=1"; -} -#endif /* __SANITIZE_ADDRESS__ */ diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/osal.c b/plugins/Dbx_mdbx/src/libmdbx/src/osal.c deleted file mode 100644 index 738a179465..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/osal.c +++ /dev/null @@ -1,1144 +0,0 @@ -/* https://en.wikipedia.org/wiki/Operating_system_abstraction_layer */ - -/* - * Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#include "./bits.h" - -#if defined(_WIN32) || defined(_WIN64) - -static int waitstatus2errcode(DWORD result) { - switch (result) { - case WAIT_OBJECT_0: - return MDBX_SUCCESS; - case WAIT_FAILED: - return GetLastError(); - case WAIT_ABANDONED: - return ERROR_ABANDONED_WAIT_0; - case WAIT_IO_COMPLETION: - return ERROR_USER_APC; - case WAIT_TIMEOUT: - return ERROR_TIMEOUT; - default: - return ERROR_UNHANDLED_ERROR; - } -} - -/* Map a result from an NTAPI call to WIN32 error code. */ -static int ntstatus2errcode(NTSTATUS status) { - DWORD dummy; - OVERLAPPED ov; - memset(&ov, 0, sizeof(ov)); - ov.Internal = status; - return GetOverlappedResult(NULL, &ov, &dummy, FALSE) ? MDBX_SUCCESS - : GetLastError(); -} - -/* We use native NT APIs to setup the memory map, so that we can - * let the DB file grow incrementally instead of always preallocating - * the full size. These APIs are defined in <wdm.h> and <ntifs.h> - * but those headers are meant for driver-level development and - * conflict with the regular user-level headers, so we explicitly - * declare them here. Using these APIs also means we must link to - * ntdll.dll, which is not linked by default in user code. */ -#pragma comment(lib, "ntdll.lib") - -extern NTSTATUS NTAPI NtCreateSection( - OUT PHANDLE SectionHandle, IN ACCESS_MASK DesiredAccess, - IN OPTIONAL POBJECT_ATTRIBUTES ObjectAttributes, - IN OPTIONAL PLARGE_INTEGER MaximumSize, IN ULONG SectionPageProtection, - IN ULONG AllocationAttributes, IN OPTIONAL HANDLE FileHandle); - -typedef struct _SECTION_BASIC_INFORMATION { - ULONG Unknown; - ULONG SectionAttributes; - LARGE_INTEGER SectionSize; -} SECTION_BASIC_INFORMATION, *PSECTION_BASIC_INFORMATION; - -typedef enum _SECTION_INFORMATION_CLASS { - SectionBasicInformation, - SectionImageInformation, - SectionRelocationInformation, // name:wow64:whNtQuerySection_SectionRelocationInformation - MaxSectionInfoClass -} SECTION_INFORMATION_CLASS; - -extern NTSTATUS NTAPI NtQuerySection( - IN HANDLE SectionHandle, IN SECTION_INFORMATION_CLASS InformationClass, - OUT PVOID InformationBuffer, IN ULONG InformationBufferSize, - OUT PULONG ResultLength OPTIONAL); - -extern NTSTATUS NTAPI NtExtendSection(IN HANDLE SectionHandle, - IN PLARGE_INTEGER NewSectionSize); - -typedef enum _SECTION_INHERIT { ViewShare = 1, ViewUnmap = 2 } SECTION_INHERIT; - -extern NTSTATUS NTAPI NtMapViewOfSection( - IN HANDLE SectionHandle, IN HANDLE ProcessHandle, IN OUT PVOID *BaseAddress, - IN ULONG_PTR ZeroBits, IN SIZE_T CommitSize, - IN OUT OPTIONAL PLARGE_INTEGER SectionOffset, IN OUT PSIZE_T ViewSize, - IN SECTION_INHERIT InheritDisposition, IN ULONG AllocationType, - IN ULONG Win32Protect); - -extern NTSTATUS NTAPI NtUnmapViewOfSection(IN HANDLE ProcessHandle, - IN OPTIONAL PVOID BaseAddress); - -extern NTSTATUS NTAPI NtClose(HANDLE Handle); - -extern NTSTATUS NTAPI NtAllocateVirtualMemory( - IN HANDLE ProcessHandle, IN OUT PVOID *BaseAddress, IN ULONG_PTR ZeroBits, - IN OUT PSIZE_T RegionSize, IN ULONG AllocationType, IN ULONG Protect); - -extern NTSTATUS NTAPI NtFreeVirtualMemory(IN HANDLE ProcessHandle, - IN PVOID *BaseAddress, - IN OUT PSIZE_T RegionSize, - IN ULONG FreeType); - -#ifndef WOF_CURRENT_VERSION -typedef struct _WOF_EXTERNAL_INFO { - DWORD Version; - DWORD Provider; -} WOF_EXTERNAL_INFO, *PWOF_EXTERNAL_INFO; -#endif /* WOF_CURRENT_VERSION */ - -#ifndef WIM_PROVIDER_CURRENT_VERSION -#define WIM_PROVIDER_HASH_SIZE 20 - -typedef struct _WIM_PROVIDER_EXTERNAL_INFO { - DWORD Version; - DWORD Flags; - LARGE_INTEGER DataSourceId; - BYTE ResourceHash[WIM_PROVIDER_HASH_SIZE]; -} WIM_PROVIDER_EXTERNAL_INFO, *PWIM_PROVIDER_EXTERNAL_INFO; -#endif /* WIM_PROVIDER_CURRENT_VERSION */ - -#ifndef FILE_PROVIDER_CURRENT_VERSION -typedef struct _FILE_PROVIDER_EXTERNAL_INFO_V1 { - ULONG Version; - ULONG Algorithm; - ULONG Flags; -} FILE_PROVIDER_EXTERNAL_INFO_V1, *PFILE_PROVIDER_EXTERNAL_INFO_V1; -#endif /* FILE_PROVIDER_CURRENT_VERSION */ - -#ifndef STATUS_OBJECT_NOT_EXTERNALLY_BACKED -#define STATUS_OBJECT_NOT_EXTERNALLY_BACKED ((NTSTATUS)0xC000046DL) -#endif -#ifndef STATUS_INVALID_DEVICE_REQUEST -#define STATUS_INVALID_DEVICE_REQUEST ((NTSTATUS)0xC0000010L) -#endif - -#endif /* _WIN32 || _WIN64 */ - -/*----------------------------------------------------------------------------*/ - -#ifndef _MSC_VER -/* Prototype should match libc runtime. ISO POSIX (2003) & LSB 3.1 */ -__nothrow __noreturn void __assert_fail(const char *assertion, const char *file, - unsigned line, const char *function); -#else -__extern_C __declspec(dllimport) void __cdecl _assert(char const *message, - char const *filename, - unsigned line); -#endif /* _MSC_VER */ - -#ifndef mdbx_assert_fail -void __cold mdbx_assert_fail(const MDBX_env *env, const char *msg, - const char *func, int line) { -#if MDBX_DEBUG - if (env && env->me_assert_func) { - env->me_assert_func(env, msg, func, line); - return; - } -#else - (void)env; -#endif /* MDBX_DEBUG */ - - if (mdbx_debug_logger) - mdbx_debug_log(MDBX_DBG_ASSERT, func, line, "assert: %s\n", msg); -#ifndef _MSC_VER - __assert_fail(msg, "mdbx", line, func); -#else - _assert(msg, func, line); -#endif /* _MSC_VER */ -} -#endif /* mdbx_assert_fail */ - -__cold void mdbx_panic(const char *fmt, ...) { - va_list ap; - va_start(ap, fmt); -#ifdef _MSC_VER - if (IsDebuggerPresent()) { - OutputDebugStringA("\r\n" FIXME "\r\n"); - FatalExit(ERROR_UNHANDLED_ERROR); - } -#elif _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L || \ - (__GLIBC_PREREQ(1, 0) && !__GLIBC_PREREQ(2, 10) && defined(_GNU_SOURCE)) - vdprintf(STDERR_FILENO, fmt, ap); -#else -#error FIXME -#endif - va_end(ap); - abort(); -} - -/*----------------------------------------------------------------------------*/ - -#ifndef mdbx_asprintf -int mdbx_asprintf(char **strp, const char *fmt, ...) { - va_list ap, ones; - - va_start(ap, fmt); - va_copy(ones, ap); -#ifdef _MSC_VER - int needed = _vscprintf(fmt, ap); -#elif defined(vsnprintf) || defined(_BSD_SOURCE) || _XOPEN_SOURCE >= 500 || \ - defined(_ISOC99_SOURCE) || _POSIX_C_SOURCE >= 200112L - int needed = vsnprintf(nullptr, 0, fmt, ap); -#else -#error FIXME -#endif - va_end(ap); - - if (unlikely(needed < 0 || needed >= INT_MAX)) { - *strp = nullptr; - va_end(ones); - return needed; - } - - *strp = malloc(needed + 1); - if (unlikely(*strp == nullptr)) { - va_end(ones); - SetLastError(MDBX_ENOMEM); - return -1; - } - -#if defined(vsnprintf) || defined(_BSD_SOURCE) || _XOPEN_SOURCE >= 500 || \ - defined(_ISOC99_SOURCE) || _POSIX_C_SOURCE >= 200112L - int actual = vsnprintf(*strp, needed + 1, fmt, ones); -#else -#error FIXME -#endif - va_end(ones); - - assert(actual == needed); - if (unlikely(actual < 0)) { - free(*strp); - *strp = nullptr; - } - return actual; -} -#endif /* mdbx_asprintf */ - -#ifndef mdbx_memalign_alloc -int mdbx_memalign_alloc(size_t alignment, size_t bytes, void **result) { -#if _MSC_VER - *result = _aligned_malloc(bytes, alignment); - return *result ? MDBX_SUCCESS : MDBX_ENOMEM /* ERROR_OUTOFMEMORY */; -#elif __GLIBC_PREREQ(2, 16) || __STDC_VERSION__ >= 201112L - *result = memalign(alignment, bytes); - return *result ? MDBX_SUCCESS : errno; -#elif _POSIX_VERSION >= 200112L - *result = nullptr; - return posix_memalign(result, alignment, bytes); -#else -#error FIXME -#endif -} -#endif /* mdbx_memalign_alloc */ - -#ifndef mdbx_memalign_free -void mdbx_memalign_free(void *ptr) { -#if _MSC_VER - _aligned_free(ptr); -#else - free(ptr); -#endif -} -#endif /* mdbx_memalign_free */ - -/*----------------------------------------------------------------------------*/ - -int mdbx_condmutex_init(mdbx_condmutex_t *condmutex) { -#if defined(_WIN32) || defined(_WIN64) - int rc = MDBX_SUCCESS; - condmutex->event = NULL; - condmutex->mutex = CreateMutex(NULL, FALSE, NULL); - if (!condmutex->mutex) - return GetLastError(); - - condmutex->event = CreateEvent(NULL, FALSE, FALSE, NULL); - if (!condmutex->event) { - rc = GetLastError(); - (void)CloseHandle(condmutex->mutex); - condmutex->mutex = NULL; - } - return rc; -#else - memset(condmutex, 0, sizeof(mdbx_condmutex_t)); - int rc = pthread_mutex_init(&condmutex->mutex, NULL); - if (rc == 0) { - rc = pthread_cond_init(&condmutex->cond, NULL); - if (rc != 0) - (void)pthread_mutex_destroy(&condmutex->mutex); - } - return rc; -#endif -} - -static bool is_allzeros(const void *ptr, size_t bytes) { - const uint8_t *u8 = ptr; - for (size_t i = 0; i < bytes; ++i) - if (u8[i] != 0) - return false; - return true; -} - -int mdbx_condmutex_destroy(mdbx_condmutex_t *condmutex) { - int rc = MDBX_EINVAL; -#if defined(_WIN32) || defined(_WIN64) - if (condmutex->event) { - rc = CloseHandle(condmutex->event) ? MDBX_SUCCESS : GetLastError(); - if (rc == MDBX_SUCCESS) - condmutex->event = NULL; - } - if (condmutex->mutex) { - rc = CloseHandle(condmutex->mutex) ? MDBX_SUCCESS : GetLastError(); - if (rc == MDBX_SUCCESS) - condmutex->mutex = NULL; - } -#else - if (!is_allzeros(&condmutex->cond, sizeof(condmutex->cond))) { - rc = pthread_cond_destroy(&condmutex->cond); - if (rc == 0) - memset(&condmutex->cond, 0, sizeof(condmutex->cond)); - } - if (!is_allzeros(&condmutex->mutex, sizeof(condmutex->mutex))) { - rc = pthread_mutex_destroy(&condmutex->mutex); - if (rc == 0) - memset(&condmutex->mutex, 0, sizeof(condmutex->mutex)); - } -#endif - return rc; -} - -int mdbx_condmutex_lock(mdbx_condmutex_t *condmutex) { -#if defined(_WIN32) || defined(_WIN64) - DWORD code = WaitForSingleObject(condmutex->mutex, INFINITE); - return waitstatus2errcode(code); -#else - return pthread_mutex_lock(&condmutex->mutex); -#endif -} - -int mdbx_condmutex_unlock(mdbx_condmutex_t *condmutex) { -#if defined(_WIN32) || defined(_WIN64) - return ReleaseMutex(condmutex->mutex) ? MDBX_SUCCESS : GetLastError(); -#else - return pthread_mutex_unlock(&condmutex->mutex); -#endif -} - -int mdbx_condmutex_signal(mdbx_condmutex_t *condmutex) { -#if defined(_WIN32) || defined(_WIN64) - return SetEvent(condmutex->event) ? MDBX_SUCCESS : GetLastError(); -#else - return pthread_cond_signal(&condmutex->cond); -#endif -} - -int mdbx_condmutex_wait(mdbx_condmutex_t *condmutex) { -#if defined(_WIN32) || defined(_WIN64) - DWORD code = - SignalObjectAndWait(condmutex->mutex, condmutex->event, INFINITE, FALSE); - if (code == WAIT_OBJECT_0) - code = WaitForSingleObject(condmutex->mutex, INFINITE); - return waitstatus2errcode(code); -#else - return pthread_cond_wait(&condmutex->cond, &condmutex->mutex); -#endif -} - -/*----------------------------------------------------------------------------*/ - -int mdbx_fastmutex_init(mdbx_fastmutex_t *fastmutex) { -#if defined(_WIN32) || defined(_WIN64) - InitializeCriticalSection(fastmutex); - return MDBX_SUCCESS; -#else - return pthread_mutex_init(fastmutex, NULL); -#endif -} - -int mdbx_fastmutex_destroy(mdbx_fastmutex_t *fastmutex) { -#if defined(_WIN32) || defined(_WIN64) - DeleteCriticalSection(fastmutex); - return MDBX_SUCCESS; -#else - return pthread_mutex_destroy(fastmutex); -#endif -} - -int mdbx_fastmutex_acquire(mdbx_fastmutex_t *fastmutex) { -#if defined(_WIN32) || defined(_WIN64) - EnterCriticalSection(fastmutex); - return MDBX_SUCCESS; -#else - return pthread_mutex_lock(fastmutex); -#endif -} - -int mdbx_fastmutex_release(mdbx_fastmutex_t *fastmutex) { -#if defined(_WIN32) || defined(_WIN64) - LeaveCriticalSection(fastmutex); - return MDBX_SUCCESS; -#else - return pthread_mutex_unlock(fastmutex); -#endif -} - -/*----------------------------------------------------------------------------*/ - -int mdbx_removefile(const char *pathname) { -#if defined(_WIN32) || defined(_WIN64) - return DeleteFileA(pathname) ? MDBX_SUCCESS : GetLastError(); -#else - return unlink(pathname) ? errno : MDBX_SUCCESS; -#endif -} -int mdbx_openfile(const char *pathname, int flags, mode_t mode, - mdbx_filehandle_t *fd, bool exclusive) { - *fd = INVALID_HANDLE_VALUE; -#if defined(_WIN32) || defined(_WIN64) - (void)mode; - - DWORD DesiredAccess, ShareMode; - DWORD FlagsAndAttributes = FILE_ATTRIBUTE_NORMAL; - switch (flags & (O_RDONLY | O_WRONLY | O_RDWR)) { - default: - return ERROR_INVALID_PARAMETER; - case O_RDONLY: - DesiredAccess = GENERIC_READ; - ShareMode = - exclusive ? FILE_SHARE_READ : (FILE_SHARE_READ | FILE_SHARE_WRITE); - break; - case O_WRONLY: /* assume for MDBX_env_copy() and friends output */ - DesiredAccess = GENERIC_WRITE; - ShareMode = 0; - FlagsAndAttributes |= FILE_FLAG_NO_BUFFERING | FILE_FLAG_WRITE_THROUGH; - break; - case O_RDWR: - DesiredAccess = GENERIC_READ | GENERIC_WRITE; - ShareMode = exclusive ? 0 : (FILE_SHARE_READ | FILE_SHARE_WRITE); - break; - } - - DWORD CreationDisposition; - switch (flags & (O_EXCL | O_CREAT)) { - default: - return ERROR_INVALID_PARAMETER; - case 0: - CreationDisposition = OPEN_EXISTING; - break; - case O_EXCL | O_CREAT: - CreationDisposition = CREATE_NEW; - FlagsAndAttributes |= FILE_ATTRIBUTE_NOT_CONTENT_INDEXED; - break; - case O_CREAT: - CreationDisposition = OPEN_ALWAYS; - FlagsAndAttributes |= FILE_ATTRIBUTE_NOT_CONTENT_INDEXED; - break; - } - - *fd = CreateFileA(pathname, DesiredAccess, ShareMode, NULL, - CreationDisposition, FlagsAndAttributes, NULL); - - if (*fd == INVALID_HANDLE_VALUE) - return GetLastError(); - if ((flags & O_CREAT) && GetLastError() != ERROR_ALREADY_EXISTS) { - /* set FILE_ATTRIBUTE_NOT_CONTENT_INDEXED for new file */ - DWORD FileAttributes = GetFileAttributesA(pathname); - if (FileAttributes == INVALID_FILE_ATTRIBUTES || - !SetFileAttributesA(pathname, FileAttributes | - FILE_ATTRIBUTE_NOT_CONTENT_INDEXED)) { - int rc = GetLastError(); - CloseHandle(*fd); - *fd = INVALID_HANDLE_VALUE; - return rc; - } - } -#else - (void)exclusive; -#ifdef O_CLOEXEC - flags |= O_CLOEXEC; -#endif - *fd = open(pathname, flags, mode); - if (*fd < 0) - return errno; -#if defined(FD_CLOEXEC) && defined(F_GETFD) - flags = fcntl(*fd, F_GETFD); - if (flags >= 0) - (void)fcntl(*fd, F_SETFD, flags | FD_CLOEXEC); -#endif -#endif - return MDBX_SUCCESS; -} - -int mdbx_closefile(mdbx_filehandle_t fd) { -#if defined(_WIN32) || defined(_WIN64) - return CloseHandle(fd) ? MDBX_SUCCESS : GetLastError(); -#else - return (close(fd) == 0) ? MDBX_SUCCESS : errno; -#endif -} - -int mdbx_pread(mdbx_filehandle_t fd, void *buf, size_t bytes, uint64_t offset) { - if (bytes > MAX_WRITE) - return MDBX_EINVAL; -#if defined(_WIN32) || defined(_WIN64) - - OVERLAPPED ov; - ov.hEvent = 0; - ov.Offset = (DWORD)offset; - ov.OffsetHigh = HIGH_DWORD(offset); - - DWORD read = 0; - if (unlikely(!ReadFile(fd, buf, (DWORD)bytes, &read, &ov))) { - int rc = GetLastError(); - return (rc == MDBX_SUCCESS) ? /* paranoia */ ERROR_READ_FAULT : rc; - } -#else - STATIC_ASSERT_MSG(sizeof(off_t) >= sizeof(size_t), - "libmdbx requires 64-bit file I/O on 64-bit systems"); - intptr_t read = pread(fd, buf, bytes, offset); - if (read < 0) { - int rc = errno; - return (rc == MDBX_SUCCESS) ? /* paranoia */ MDBX_EIO : rc; - } -#endif - return (bytes == (size_t)read) ? MDBX_SUCCESS : MDBX_ENODATA; -} - -int mdbx_pwrite(mdbx_filehandle_t fd, const void *buf, size_t bytes, - uint64_t offset) { -#if defined(_WIN32) || defined(_WIN64) - if (bytes > MAX_WRITE) - return ERROR_INVALID_PARAMETER; - - OVERLAPPED ov; - ov.hEvent = 0; - ov.Offset = (DWORD)offset; - ov.OffsetHigh = HIGH_DWORD(offset); - - DWORD written; - if (likely(WriteFile(fd, buf, (DWORD)bytes, &written, &ov))) - return (bytes == written) ? MDBX_SUCCESS : MDBX_EIO /* ERROR_WRITE_FAULT */; - return GetLastError(); -#else - int rc; - intptr_t written; - do { - STATIC_ASSERT_MSG(sizeof(off_t) >= sizeof(size_t), - "libmdbx requires 64-bit file I/O on 64-bit systems"); - written = pwrite(fd, buf, bytes, offset); - if (likely(bytes == (size_t)written)) - return MDBX_SUCCESS; - rc = errno; - } while (rc == EINTR); - return (written < 0) ? rc : MDBX_EIO /* Use which error code (ENOSPC)? */; -#endif -} - -int mdbx_pwritev(mdbx_filehandle_t fd, struct iovec *iov, int iovcnt, - uint64_t offset, size_t expected_written) { -#if defined(_WIN32) || defined(_WIN64) - size_t written = 0; - for (int i = 0; i < iovcnt; ++i) { - int rc = mdbx_pwrite(fd, iov[i].iov_base, iov[i].iov_len, offset); - if (unlikely(rc != MDBX_SUCCESS)) - return rc; - written += iov[i].iov_len; - offset += iov[i].iov_len; - } - return (expected_written == written) ? MDBX_SUCCESS - : MDBX_EIO /* ERROR_WRITE_FAULT */; -#else - int rc; - intptr_t written; - do { - STATIC_ASSERT_MSG(sizeof(off_t) >= sizeof(size_t), - "libmdbx requires 64-bit file I/O on 64-bit systems"); - written = pwritev(fd, iov, iovcnt, offset); - if (likely(expected_written == (size_t)written)) - return MDBX_SUCCESS; - rc = errno; - } while (rc == EINTR); - return (written < 0) ? rc : MDBX_EIO /* Use which error code? */; -#endif -} - -int mdbx_write(mdbx_filehandle_t fd, const void *buf, size_t bytes) { -#ifdef SIGPIPE - sigset_t set, old; - sigemptyset(&set); - sigaddset(&set, SIGPIPE); - int rc = pthread_sigmask(SIG_BLOCK, &set, &old); - if (rc != 0) - return rc; -#endif - - const char *ptr = buf; - for (;;) { - size_t chunk = (MAX_WRITE < bytes) ? MAX_WRITE : bytes; -#if defined(_WIN32) || defined(_WIN64) - DWORD written; - if (unlikely(!WriteFile(fd, ptr, (DWORD)chunk, &written, NULL))) - return GetLastError(); -#else - intptr_t written = write(fd, ptr, chunk); - if (written < 0) { - int rc = errno; -#ifdef SIGPIPE - if (rc == EPIPE) { - /* Collect the pending SIGPIPE, otherwise at least OS X - * gives it to the process on thread-exit (ITS#8504). */ - int tmp; - sigwait(&set, &tmp); - written = 0; - continue; - } - pthread_sigmask(SIG_SETMASK, &old, NULL); -#endif - return rc; - } -#endif - if (likely(bytes == (size_t)written)) { -#ifdef SIGPIPE - pthread_sigmask(SIG_SETMASK, &old, NULL); -#endif - return MDBX_SUCCESS; - } - ptr += written; - bytes -= written; - } -} - -int mdbx_filesync(mdbx_filehandle_t fd, bool filesize_changed) { -#if defined(_WIN32) || defined(_WIN64) - (void)filesize_changed; - return FlushFileBuffers(fd) ? MDBX_SUCCESS : GetLastError(); -#elif __GLIBC_PREREQ(2, 16) || _BSD_SOURCE || _XOPEN_SOURCE || \ - (__GLIBC_PREREQ(2, 8) && _POSIX_C_SOURCE >= 200112L) - for (;;) { -/* LY: It is no reason to use fdatasync() here, even in case - * no such bug in a kernel. Because "no-bug" mean that a kernel - * internally do nearly the same, e.g. fdatasync() == fsync() - * when no-kernel-bug and file size was changed. - * - * So, this code is always safe and without appreciable - * performance degradation. - * - * For more info about of a corresponding fdatasync() bug - * see http://www.spinics.net/lists/linux-ext4/msg33714.html */ -#if _POSIX_C_SOURCE >= 199309L || _XOPEN_SOURCE >= 500 || \ - defined(_POSIX_SYNCHRONIZED_IO) - if (!filesize_changed && fdatasync(fd) == 0) - return MDBX_SUCCESS; -#else - (void)filesize_changed; -#endif - if (fsync(fd) == 0) - return MDBX_SUCCESS; - int rc = errno; - if (rc != EINTR) - return rc; - } -#else -#error FIXME -#endif -} - -int mdbx_filesize_sync(mdbx_filehandle_t fd) { -#if defined(_WIN32) || defined(_WIN64) - (void)fd; - /* Nothing on Windows (i.e. newer 100% steady) */ - return MDBX_SUCCESS; -#else - for (;;) { - if (fsync(fd) == 0) - return MDBX_SUCCESS; - int rc = errno; - if (rc != EINTR) - return rc; - } -#endif -} - -int mdbx_filesize(mdbx_filehandle_t fd, uint64_t *length) { -#if defined(_WIN32) || defined(_WIN64) - BY_HANDLE_FILE_INFORMATION info; - if (!GetFileInformationByHandle(fd, &info)) - return GetLastError(); - *length = info.nFileSizeLow | (uint64_t)info.nFileSizeHigh << 32; -#else - struct stat st; - - STATIC_ASSERT_MSG(sizeof(off_t) <= sizeof(uint64_t), - "libmdbx requires 64-bit file I/O on 64-bit systems"); - if (fstat(fd, &st)) - return errno; - - *length = st.st_size; -#endif - return MDBX_SUCCESS; -} - -int mdbx_ftruncate(mdbx_filehandle_t fd, uint64_t length) { -#if defined(_WIN32) || defined(_WIN64) - LARGE_INTEGER li; - li.QuadPart = length; - return (SetFilePointerEx(fd, li, NULL, FILE_BEGIN) && SetEndOfFile(fd)) - ? MDBX_SUCCESS - : GetLastError(); -#else - STATIC_ASSERT_MSG(sizeof(off_t) >= sizeof(size_t), - "libmdbx requires 64-bit file I/O on 64-bit systems"); - return ftruncate(fd, length) == 0 ? MDBX_SUCCESS : errno; -#endif -} - -/*----------------------------------------------------------------------------*/ - -int mdbx_thread_create(mdbx_thread_t *thread, - THREAD_RESULT(THREAD_CALL *start_routine)(void *), - void *arg) { -#if defined(_WIN32) || defined(_WIN64) - *thread = CreateThread(NULL, 0, start_routine, arg, 0, NULL); - return *thread ? MDBX_SUCCESS : GetLastError(); -#else - return pthread_create(thread, NULL, start_routine, arg); -#endif -} - -int mdbx_thread_join(mdbx_thread_t thread) { -#if defined(_WIN32) || defined(_WIN64) - DWORD code = WaitForSingleObject(thread, INFINITE); - return waitstatus2errcode(code); -#else - void *unused_retval = &unused_retval; - return pthread_join(thread, &unused_retval); -#endif -} - -/*----------------------------------------------------------------------------*/ - -int mdbx_msync(mdbx_mmap_t *map, size_t offset, size_t length, int async) { - uint8_t *ptr = (uint8_t *)map->address + offset; -#if defined(_WIN32) || defined(_WIN64) - if (FlushViewOfFile(ptr, length) && (async || FlushFileBuffers(map->fd))) - return MDBX_SUCCESS; - return GetLastError(); -#else - const int mode = async ? MS_ASYNC : MS_SYNC; - return (msync(ptr, length, mode) == 0) ? MDBX_SUCCESS : errno; -#endif -} - -int mdbx_check4nonlocal(mdbx_filehandle_t handle, int flags) { -#if defined(_WIN32) || defined(_WIN64) - if (GetFileType(handle) != FILE_TYPE_DISK) - return ERROR_FILE_OFFLINE; - - if (mdbx_GetFileInformationByHandleEx) { - FILE_REMOTE_PROTOCOL_INFO RemoteProtocolInfo; - if (mdbx_GetFileInformationByHandleEx(handle, FileRemoteProtocolInfo, - &RemoteProtocolInfo, - sizeof(RemoteProtocolInfo))) { - - if ((RemoteProtocolInfo.Flags & REMOTE_PROTOCOL_INFO_FLAG_OFFLINE) && - !(flags & MDBX_RDONLY)) - return ERROR_FILE_OFFLINE; - if (!(RemoteProtocolInfo.Flags & REMOTE_PROTOCOL_INFO_FLAG_LOOPBACK) && - !(flags & MDBX_EXCLUSIVE)) - return ERROR_REMOTE_STORAGE_MEDIA_ERROR; - } - } - - if (mdbx_NtFsControlFile) { - NTSTATUS rc; - struct { - WOF_EXTERNAL_INFO wof_info; - union { - WIM_PROVIDER_EXTERNAL_INFO wim_info; - FILE_PROVIDER_EXTERNAL_INFO_V1 file_info; - }; - size_t reserved_for_microsoft_madness[42]; - } GetExternalBacking_OutputBuffer; - IO_STATUS_BLOCK StatusBlock; - rc = mdbx_NtFsControlFile(handle, NULL, NULL, NULL, &StatusBlock, - FSCTL_GET_EXTERNAL_BACKING, NULL, 0, - &GetExternalBacking_OutputBuffer, - sizeof(GetExternalBacking_OutputBuffer)); - if (NT_SUCCESS(rc)) { - if (!(flags & MDBX_EXCLUSIVE)) - return ERROR_REMOTE_STORAGE_MEDIA_ERROR; - } else if (rc != STATUS_OBJECT_NOT_EXTERNALLY_BACKED && - rc != STATUS_INVALID_DEVICE_REQUEST) - return ntstatus2errcode(rc); - } - - if (mdbx_GetVolumeInformationByHandleW && mdbx_GetFinalPathNameByHandleW) { - WCHAR PathBuffer[INT16_MAX]; - DWORD VolumeSerialNumber, FileSystemFlags; - if (!mdbx_GetVolumeInformationByHandleW(handle, PathBuffer, INT16_MAX, - &VolumeSerialNumber, NULL, - &FileSystemFlags, NULL, 0)) - return GetLastError(); - - if ((flags & MDBX_RDONLY) == 0) { - if (FileSystemFlags & (FILE_SEQUENTIAL_WRITE_ONCE | - FILE_READ_ONLY_VOLUME | FILE_VOLUME_IS_COMPRESSED)) - return ERROR_REMOTE_STORAGE_MEDIA_ERROR; - } - - if (!mdbx_GetFinalPathNameByHandleW(handle, PathBuffer, INT16_MAX, - FILE_NAME_NORMALIZED | VOLUME_NAME_NT)) - return GetLastError(); - - if (_wcsnicmp(PathBuffer, L"\\Device\\Mup\\", 12) == 0) { - if (!(flags & MDBX_EXCLUSIVE)) - return ERROR_REMOTE_STORAGE_MEDIA_ERROR; - } else if (mdbx_GetFinalPathNameByHandleW(handle, PathBuffer, INT16_MAX, - FILE_NAME_NORMALIZED | - VOLUME_NAME_DOS)) { - UINT DriveType = GetDriveTypeW(PathBuffer); - if (DriveType == DRIVE_NO_ROOT_DIR && - wcsncmp(PathBuffer, L"\\\\?\\", 4) == 0 && - wcsncmp(PathBuffer + 5, L":\\", 2) == 0) { - PathBuffer[7] = 0; - DriveType = GetDriveTypeW(PathBuffer + 4); - } - switch (DriveType) { - case DRIVE_CDROM: - if (flags & MDBX_RDONLY) - break; - // fall through - case DRIVE_UNKNOWN: - case DRIVE_NO_ROOT_DIR: - case DRIVE_REMOTE: - default: - if (!(flags & MDBX_EXCLUSIVE)) - return ERROR_REMOTE_STORAGE_MEDIA_ERROR; - // fall through - case DRIVE_REMOVABLE: - case DRIVE_FIXED: - case DRIVE_RAMDISK: - break; - } - } - } -#else - (void)handle; - /* TODO: check for NFS handle ? */ - (void)flags; -#endif - return MDBX_SUCCESS; -} - -int mdbx_mmap(int flags, mdbx_mmap_t *map, size_t size, size_t limit) { - assert(size <= limit); -#if defined(_WIN32) || defined(_WIN64) - map->length = 0; - map->current = 0; - map->section = NULL; - map->address = nullptr; - - if (!(flags & MDBX_EXCLUSIVE)) { - NTSTATUS rc = mdbx_check4nonlocal(map->fd, flags); - if (rc != MDBX_SUCCESS) - return rc; - } - - NTSTATUS rc = mdbx_filesize(map->fd, &map->filesize); - if (rc != MDBX_SUCCESS) - return rc; - if ((flags & MDBX_RDONLY) == 0 && map->filesize != size) { - rc = mdbx_ftruncate(map->fd, size); - if (rc == MDBX_SUCCESS) - map->filesize = size; - /* ignore error, because Windows unable shrink file - * that already mapped (by another process) */ - } - - LARGE_INTEGER SectionSize; - SectionSize.QuadPart = size; - rc = NtCreateSection( - &map->section, - /* DesiredAccess */ - (flags & MDBX_WRITEMAP) - ? SECTION_QUERY | SECTION_MAP_READ | SECTION_EXTEND_SIZE | - SECTION_MAP_WRITE - : SECTION_QUERY | SECTION_MAP_READ | SECTION_EXTEND_SIZE, - /* ObjectAttributes */ NULL, /* MaximumSize (InitialSize) */ &SectionSize, - /* SectionPageProtection */ - (flags & MDBX_RDONLY) ? PAGE_READONLY : PAGE_READWRITE, - /* AllocationAttributes */ SEC_RESERVE, map->fd); - if (!NT_SUCCESS(rc)) - return ntstatus2errcode(rc); - - SIZE_T ViewSize = (flags & MDBX_RDONLY) ? 0 : limit; - rc = NtMapViewOfSection( - map->section, GetCurrentProcess(), &map->address, - /* ZeroBits */ 0, - /* CommitSize */ 0, - /* SectionOffset */ NULL, &ViewSize, - /* InheritDisposition */ ViewUnmap, - /* AllocationType */ (flags & MDBX_RDONLY) ? 0 : MEM_RESERVE, - /* Win32Protect */ - (flags & MDBX_WRITEMAP) ? PAGE_READWRITE : PAGE_READONLY); - if (!NT_SUCCESS(rc)) { - NtClose(map->section); - map->section = 0; - map->address = nullptr; - return ntstatus2errcode(rc); - } - assert(map->address != MAP_FAILED); - - map->current = (size_t)SectionSize.QuadPart; - map->length = ViewSize; - return MDBX_SUCCESS; -#else - (void)size; - map->address = mmap( - NULL, limit, (flags & MDBX_WRITEMAP) ? PROT_READ | PROT_WRITE : PROT_READ, - MAP_SHARED, map->fd, 0); - if (likely(map->address != MAP_FAILED)) { - map->length = limit; - return MDBX_SUCCESS; - } - map->length = 0; - map->address = nullptr; - return errno; -#endif -} - -int mdbx_munmap(mdbx_mmap_t *map) { -#if defined(_WIN32) || defined(_WIN64) - if (map->section) - NtClose(map->section); - NTSTATUS rc = NtUnmapViewOfSection(GetCurrentProcess(), map->address); - if (!NT_SUCCESS(rc)) - ntstatus2errcode(rc); - - map->length = 0; - map->current = 0; - map->address = nullptr; -#else - if (unlikely(munmap(map->address, map->length))) - return errno; - map->length = 0; - map->address = nullptr; -#endif - return MDBX_SUCCESS; -} - -int mdbx_mresize(int flags, mdbx_mmap_t *map, size_t size, size_t limit) { - assert(size <= limit); -#if defined(_WIN32) || defined(_WIN64) - assert(size != map->current || limit != map->length || size < map->filesize); - - NTSTATUS status; - LARGE_INTEGER SectionSize; - int err, rc = MDBX_SUCCESS; - - if (!(flags & MDBX_RDONLY) && limit == map->length && size > map->current) { - /* growth rw-section */ - SectionSize.QuadPart = size; - status = NtExtendSection(map->section, &SectionSize); - if (NT_SUCCESS(status)) { - map->current = size; - if (map->filesize < size) - map->filesize = size; - } - return ntstatus2errcode(status); - } - - if (limit > map->length) { - /* check ability of address space for growth before umnap */ - PVOID BaseAddress = (PBYTE)map->address + map->length; - SIZE_T RegionSize = limit - map->length; - status = NtAllocateVirtualMemory(GetCurrentProcess(), &BaseAddress, 0, - &RegionSize, MEM_RESERVE, PAGE_NOACCESS); - if (!NT_SUCCESS(status)) - return ntstatus2errcode(status); - - status = NtFreeVirtualMemory(GetCurrentProcess(), &BaseAddress, &RegionSize, - MEM_RELEASE); - if (!NT_SUCCESS(status)) - return ntstatus2errcode(status); - } - - /* Windows unable: - * - shrink a mapped file; - * - change size of mapped view; - * - extend read-only mapping; - * Therefore we should unmap/map entire section. */ - status = NtUnmapViewOfSection(GetCurrentProcess(), map->address); - if (!NT_SUCCESS(status)) - return ntstatus2errcode(status); - status = NtClose(map->section); - map->section = NULL; - PVOID ReservedAddress = NULL; - SIZE_T ReservedSize = limit; - - if (!NT_SUCCESS(status)) { - bailout_ntstatus: - err = ntstatus2errcode(status); - bailout: - map->address = NULL; - map->current = map->length = 0; - if (ReservedAddress) - (void)NtFreeVirtualMemory(GetCurrentProcess(), &ReservedAddress, - &ReservedSize, MEM_RELEASE); - return err; - } - - /* resizing of the file may take a while, - * therefore we reserve address space to avoid occupy it by other threads */ - ReservedAddress = map->address; - status = NtAllocateVirtualMemory(GetCurrentProcess(), &ReservedAddress, 0, - &ReservedSize, MEM_RESERVE, PAGE_NOACCESS); - if (!NT_SUCCESS(status)) { - ReservedAddress = NULL; - if (status != /* STATUS_CONFLICTING_ADDRESSES */ 0xC0000018 || - limit == map->length) - goto bailout_ntstatus /* no way to recovery */; - - /* assume we can change base address if mapping size changed */ - map->address = NULL; - } - -retry_file_and_section: - err = mdbx_filesize(map->fd, &map->filesize); - if (err != MDBX_SUCCESS) - goto bailout; - - if ((flags & MDBX_RDONLY) == 0 && map->filesize != size) { - err = mdbx_ftruncate(map->fd, size); - if (err == MDBX_SUCCESS) - map->filesize = size; - /* ignore error, because Windows unable shrink file - * that already mapped (by another process) */ - } - - SectionSize.QuadPart = size; - status = NtCreateSection( - &map->section, - /* DesiredAccess */ - (flags & MDBX_WRITEMAP) - ? SECTION_QUERY | SECTION_MAP_READ | SECTION_EXTEND_SIZE | - SECTION_MAP_WRITE - : SECTION_QUERY | SECTION_MAP_READ | SECTION_EXTEND_SIZE, - /* ObjectAttributes */ NULL, - /* MaximumSize (InitialSize) */ &SectionSize, - /* SectionPageProtection */ - (flags & MDBX_RDONLY) ? PAGE_READONLY : PAGE_READWRITE, - /* AllocationAttributes */ SEC_RESERVE, map->fd); - - if (!NT_SUCCESS(status)) - goto bailout_ntstatus; - - if (ReservedAddress) { - /* release reserved address space */ - status = NtFreeVirtualMemory(GetCurrentProcess(), &ReservedAddress, - &ReservedSize, MEM_RELEASE); - ReservedAddress = NULL; - if (!NT_SUCCESS(status)) - goto bailout_ntstatus; - } - -retry_mapview:; - SIZE_T ViewSize = (flags & MDBX_RDONLY) ? size : limit; - status = NtMapViewOfSection( - map->section, GetCurrentProcess(), &map->address, - /* ZeroBits */ 0, - /* CommitSize */ 0, - /* SectionOffset */ NULL, &ViewSize, - /* InheritDisposition */ ViewUnmap, - /* AllocationType */ (flags & MDBX_RDONLY) ? 0 : MEM_RESERVE, - /* Win32Protect */ - (flags & MDBX_WRITEMAP) ? PAGE_READWRITE : PAGE_READONLY); - - if (!NT_SUCCESS(status)) { - if (status == /* STATUS_CONFLICTING_ADDRESSES */ 0xC0000018 && - map->address && limit != map->length) { - /* try remap at another base address, but only if the limit is changing */ - map->address = NULL; - goto retry_mapview; - } - NtClose(map->section); - map->section = NULL; - - if (map->address && (size != map->current || limit != map->length)) { - /* try remap with previously size and limit, - * but will return MDBX_RESULT_TRUE on success */ - rc = MDBX_RESULT_TRUE; - size = map->current; - limit = map->length; - goto retry_file_and_section; - } - - /* no way to recovery */ - goto bailout_ntstatus; - } - assert(map->address != MAP_FAILED); - - map->current = (size_t)SectionSize.QuadPart; - map->length = ViewSize; - return rc; -#else - if (limit != map->length) { - void *ptr = mremap(map->address, map->length, limit, MREMAP_MAYMOVE); - if (ptr == MAP_FAILED) - return errno; - map->address = ptr; - map->length = limit; - } - return (flags & MDBX_RDONLY) ? MDBX_SUCCESS : mdbx_ftruncate(map->fd, size); -#endif -} - -/*----------------------------------------------------------------------------*/ - -__cold void mdbx_osal_jitter(bool tiny) { - for (;;) { -#if defined(_M_IX86) || defined(_M_X64) || defined(__i386__) || \ - defined(__x86_64__) - const unsigned salt = 277u * (unsigned)__rdtsc(); -#else - const unsigned salt = rand(); -#endif - - const unsigned coin = salt % (tiny ? 29u : 43u); - if (coin < 43 / 3) - break; -#if defined(_WIN32) || defined(_WIN64) - SwitchToThread(); - if (coin > 43 * 2 / 3) - Sleep(1); -#else - sched_yield(); - if (coin > 43 * 2 / 3) - usleep(coin); -#endif - } -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/osal.h b/plugins/Dbx_mdbx/src/libmdbx/src/osal.h deleted file mode 100644 index daa79064f9..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/osal.h +++ /dev/null @@ -1,749 +0,0 @@ -/* https://en.wikipedia.org/wiki/Operating_system_abstraction_layer */ - -/* - * Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#pragma once - -/*----------------------------------------------------------------------------*/ -/* Microsoft compiler generates a lot of warning for self includes... */ - -#ifdef _MSC_VER -#pragma warning(push, 1) -#pragma warning(disable : 4548) /* expression before comma has no effect; \ - expected expression with side - effect */ -#pragma warning(disable : 4530) /* C++ exception handler used, but unwind \ - * semantics are not enabled. Specify /EHsc */ -#pragma warning(disable : 4577) /* 'noexcept' used with no exception handling \ - * mode specified; termination on exception is \ - * not guaranteed. Specify /EHsc */ -#if !defined(_CRT_SECURE_NO_WARNINGS) -#define _CRT_SECURE_NO_WARNINGS -#endif -#endif /* _MSC_VER (warnings) */ - -/*----------------------------------------------------------------------------*/ -/* C99 includes */ - -#include <inttypes.h> -#include <stddef.h> -#include <stdint.h> -#include <stdlib.h> - -#include <assert.h> -#include <fcntl.h> -#include <limits.h> -#include <malloc.h> -#include <stdio.h> -#include <string.h> -#include <time.h> - -#ifndef _POSIX_C_SOURCE -#ifdef _POSIX_SOURCE -#define _POSIX_C_SOURCE 1 -#else -#define _POSIX_C_SOURCE 0 -#endif -#endif - -#ifndef _XOPEN_SOURCE -#define _XOPEN_SOURCE 0 -#endif - -/*----------------------------------------------------------------------------*/ -/* Systems includes */ - -#if defined(_WIN32) || defined(_WIN64) -#define WIN32_LEAN_AND_MEAN -#include <tlhelp32.h> -#include <windows.h> -#include <winnt.h> -#include <winternl.h> -#define HAVE_SYS_STAT_H -#define HAVE_SYS_TYPES_H -typedef HANDLE mdbx_thread_t; -typedef unsigned mdbx_thread_key_t; -#define MDBX_OSAL_SECTION HANDLE -#define MAP_FAILED NULL -#define HIGH_DWORD(v) ((DWORD)((sizeof(v) > 4) ? ((uint64_t)(v) >> 32) : 0)) -#define THREAD_CALL WINAPI -#define THREAD_RESULT DWORD -typedef struct { - HANDLE mutex; - HANDLE event; -} mdbx_condmutex_t; -typedef CRITICAL_SECTION mdbx_fastmutex_t; -#else -#include <pthread.h> -#include <signal.h> -#include <sys/file.h> -#include <sys/mman.h> -#include <sys/param.h> -#include <sys/stat.h> -#include <sys/uio.h> -#include <unistd.h> -typedef pthread_t mdbx_thread_t; -typedef pthread_key_t mdbx_thread_key_t; -#define INVALID_HANDLE_VALUE (-1) -#define THREAD_CALL -#define THREAD_RESULT void * -typedef struct { - pthread_mutex_t mutex; - pthread_cond_t cond; -} mdbx_condmutex_t; -typedef pthread_mutex_t mdbx_fastmutex_t; -#endif /* Platform */ - -/* *INDENT-OFF* */ -/* clang-format off */ -#if defined(HAVE_SYS_STAT_H) || __has_include(<sys/stat.h>) -#include <sys/stat.h> -#endif -#if defined(HAVE_SYS_TYPES_H) || __has_include(<sys/types.h>) -#include <sys/types.h> -#endif -#if defined(HAVE_SYS_FILE_H) || __has_include(<sys/file.h>) -#include <sys/file.h> -#endif -/* *INDENT-ON* */ -/* clang-format on */ - -#ifndef SSIZE_MAX -#define SSIZE_MAX INTPTR_MAX -#endif - -#if defined(i386) || defined(__386) || defined(__i386) || defined(__i386__) || \ - defined(i486) || defined(__i486) || defined(__i486__) || \ - defined(i586) | defined(__i586) || defined(__i586__) || defined(i686) || \ - defined(__i686) || defined(__i686__) || defined(_M_IX86) || \ - defined(_X86_) || defined(__THW_INTEL__) || defined(__I86__) || \ - defined(__INTEL__) || defined(__x86_64) || defined(__x86_64__) || \ - defined(__amd64__) || defined(__amd64) || defined(_M_X64) || \ - defined(_M_AMD64) || defined(__IA32__) || defined(__INTEL__) -#ifndef __ia32__ -/* LY: define neutral __ia32__ for x86 and x86-64 archs */ -#define __ia32__ 1 -#endif /* __ia32__ */ -#if !defined(__amd64__) && (defined(__x86_64) || defined(__x86_64__) || \ - defined(__amd64) || defined(_M_X64)) -/* LY: define trusty __amd64__ for all AMD64/x86-64 arch */ -#define __amd64__ 1 -#endif /* __amd64__ */ -#endif /* all x86 */ - -#if !defined(UNALIGNED_OK) -#if (defined(__ia32__) || defined(__e2k__) || \ - defined(__ARM_FEATURE_UNALIGNED)) && \ - !defined(__ALIGNED__) -#define UNALIGNED_OK 1 -#else -#define UNALIGNED_OK 0 -#endif -#endif /* UNALIGNED_OK */ - -#if (-6 & 5) || CHAR_BIT != 8 || UINT_MAX < 0xffffffff || ULONG_MAX % 0xFFFF -#error \ - "Sanity checking failed: Two's complement, reasonably sized integer types" -#endif - -/*----------------------------------------------------------------------------*/ -/* Compiler's includes for builtins/intrinsics */ - -#if defined(_MSC_VER) || defined(__INTEL_COMPILER) -#include <intrin.h> -#elif __GNUC_PREREQ(4, 4) || defined(__clang__) -#if defined(__ia32__) || defined(__e2k__) -#include <x86intrin.h> -#endif /* __ia32__ */ -#if defined(__ia32__) -#include <cpuid.h> -#endif /* __ia32__ */ -#elif defined(__SUNPRO_C) || defined(__sun) || defined(sun) -#include <mbarrier.h> -#elif (defined(_HPUX_SOURCE) || defined(__hpux) || defined(__HP_aCC)) && \ - (defined(HP_IA64) || defined(__ia64)) -#include <machine/sys/inline.h> -#elif defined(__IBMC__) && defined(__powerpc) -#include <atomic.h> -#elif defined(_AIX) -#include <builtins.h> -#include <sys/atomic_op.h> -#elif (defined(__osf__) && defined(__DECC)) || defined(__alpha) -#include <c_asm.h> -#include <machine/builtins.h> -#elif defined(__MWERKS__) -/* CodeWarrior - troubles ? */ -#pragma gcc_extensions -#elif defined(__SNC__) -/* Sony PS3 - troubles ? */ -#elif defined(__hppa__) || defined(__hppa) -#include <machine/inline.h> -#else -#error Unsupported C compiler, please use GNU C 4.4 or newer -#endif /* Compiler */ - -/*----------------------------------------------------------------------------*/ -/* Byteorder */ - -#if !defined(__BYTE_ORDER__) || !defined(__ORDER_LITTLE_ENDIAN__) || \ - !defined(__ORDER_BIG_ENDIAN__) - -/* *INDENT-OFF* */ -/* clang-format off */ -#if defined(__GLIBC__) || defined(__GNU_LIBRARY__) || defined(__ANDROID__) || \ - defined(HAVE_ENDIAN_H) || __has_include(<endian.h>) -#include <endian.h> -#elif defined(__APPLE__) || defined(__MACH__) || defined(__OpenBSD__) || \ - defined(HAVE_MACHINE_ENDIAN_H) || __has_include(<machine/endian.h>) -#include <machine/endian.h> -#elif defined(HAVE_SYS_ISA_DEFS_H) || __has_include(<sys/isa_defs.h>) -#include <sys/isa_defs.h> -#elif (defined(HAVE_SYS_TYPES_H) && defined(HAVE_SYS_ENDIAN_H)) || \ - (__has_include(<sys/types.h>) && __has_include(<sys/endian.h>)) -#include <sys/endian.h> -#include <sys/types.h> -#elif defined(__bsdi__) || defined(__DragonFly__) || defined(__FreeBSD__) || \ - defined(__NETBSD__) || defined(__NetBSD__) || \ - defined(HAVE_SYS_PARAM_H) || __has_include(<sys/param.h>) -#include <sys/param.h> -#endif /* OS */ -/* *INDENT-ON* */ -/* clang-format on */ - -#if defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && defined(__BIG_ENDIAN) -#define __ORDER_LITTLE_ENDIAN__ __LITTLE_ENDIAN -#define __ORDER_BIG_ENDIAN__ __BIG_ENDIAN -#define __BYTE_ORDER__ __BYTE_ORDER -#elif defined(_BYTE_ORDER) && defined(_LITTLE_ENDIAN) && defined(_BIG_ENDIAN) -#define __ORDER_LITTLE_ENDIAN__ _LITTLE_ENDIAN -#define __ORDER_BIG_ENDIAN__ _BIG_ENDIAN -#define __BYTE_ORDER__ _BYTE_ORDER -#else -#define __ORDER_LITTLE_ENDIAN__ 1234 -#define __ORDER_BIG_ENDIAN__ 4321 - -#if defined(__LITTLE_ENDIAN__) || \ - (defined(_LITTLE_ENDIAN) && !defined(_BIG_ENDIAN)) || \ - defined(__ARMEL__) || defined(__THUMBEL__) || defined(__AARCH64EL__) || \ - defined(__MIPSEL__) || defined(_MIPSEL) || defined(__MIPSEL) || \ - defined(_M_ARM) || defined(_M_ARM64) || defined(__e2k__) || \ - defined(__elbrus_4c__) || defined(__elbrus_8c__) || defined(__bfin__) || \ - defined(__BFIN__) || defined(__ia64__) || defined(_IA64) || \ - defined(__IA64__) || defined(__ia64) || defined(_M_IA64) || \ - defined(__itanium__) || defined(__ia32__) || defined(__CYGWIN__) || \ - defined(_WIN64) || defined(_WIN32) || defined(__TOS_WIN__) || \ - defined(__WINDOWS__) -#define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__ - -#elif defined(__BIG_ENDIAN__) || \ - (defined(_BIG_ENDIAN) && !defined(_LITTLE_ENDIAN)) || \ - defined(__ARMEB__) || defined(__THUMBEB__) || defined(__AARCH64EB__) || \ - defined(__MIPSEB__) || defined(_MIPSEB) || defined(__MIPSEB) || \ - defined(__m68k__) || defined(M68000) || defined(__hppa__) || \ - defined(__hppa) || defined(__HPPA__) || defined(__sparc__) || \ - defined(__sparc) || defined(__370__) || defined(__THW_370__) || \ - defined(__s390__) || defined(__s390x__) || defined(__SYSC_ZARCH__) -#define __BYTE_ORDER__ __ORDER_BIG_ENDIAN__ - -#else -#error __BYTE_ORDER__ should be defined. -#endif /* Arch */ - -#endif -#endif /* __BYTE_ORDER__ || __ORDER_LITTLE_ENDIAN__ || __ORDER_BIG_ENDIAN__ */ - -/*----------------------------------------------------------------------------*/ -/* Memory/Compiler barriers, cache coherence */ - -static __inline void mdbx_compiler_barrier(void) { -#if defined(__clang__) || defined(__GNUC__) - __asm__ __volatile__("" ::: "memory"); -#elif defined(_MSC_VER) - _ReadWriteBarrier(); -#elif defined(__INTEL_COMPILER) /* LY: Intel Compiler may mimic GCC and MSC */ - __memory_barrier(); - if (type > MDBX_BARRIER_COMPILER) -#if defined(__ia64__) || defined(__ia64) || defined(_M_IA64) - __mf(); -#elif defined(__i386__) || defined(__x86_64__) - _mm_mfence(); -#else -#error "Unknown target for Intel Compiler, please report to us." -#endif -#elif defined(__SUNPRO_C) || defined(__sun) || defined(sun) - __compiler_barrier(); -#elif (defined(_HPUX_SOURCE) || defined(__hpux) || defined(__HP_aCC)) && \ - (defined(HP_IA64) || defined(__ia64)) - _Asm_sched_fence(/* LY: no-arg meaning 'all expect ALU', e.g. 0x3D3D */); -#elif defined(_AIX) || defined(__ppc__) || defined(__powerpc__) || \ - defined(__ppc64__) || defined(__powerpc64__) - __fence(); -#else -#error "Could not guess the kind of compiler, please report to us." -#endif -} - -static __inline void mdbx_memory_barrier(void) { -#if __has_extension(c_atomic) || __has_extension(cxx_atomic) - __c11_atomic_thread_fence(__ATOMIC_SEQ_CST); -#elif defined(__ATOMIC_SEQ_CST) - __atomic_thread_fence(__ATOMIC_SEQ_CST); -#elif defined(__clang__) || defined(__GNUC__) - __sync_synchronize(); -#elif defined(_MSC_VER) - MemoryBarrier(); -#elif defined(__INTEL_COMPILER) /* LY: Intel Compiler may mimic GCC and MSC */ -#if defined(__ia64__) || defined(__ia64) || defined(_M_IA64) - __mf(); -#elif defined(__i386__) || defined(__x86_64__) - _mm_mfence(); -#else -#error "Unknown target for Intel Compiler, please report to us." -#endif -#elif defined(__SUNPRO_C) || defined(__sun) || defined(sun) - __machine_rw_barrier(); -#elif (defined(_HPUX_SOURCE) || defined(__hpux) || defined(__HP_aCC)) && \ - (defined(HP_IA64) || defined(__ia64)) - _Asm_mf(); -#elif defined(_AIX) || defined(__ppc__) || defined(__powerpc__) || \ - defined(__ppc64__) || defined(__powerpc64__) - __lwsync(); -#else -#error "Could not guess the kind of compiler, please report to us." -#endif -} - -/*----------------------------------------------------------------------------*/ -/* Cache coherence and invalidation */ - -#ifndef MDBX_CACHE_IS_COHERENT -#if defined(__ia32__) || defined(__e2k__) || defined(__hppa) || \ - defined(__hppa__) -#define MDBX_CACHE_IS_COHERENT 1 -#else -#define MDBX_CACHE_IS_COHERENT 0 -#endif -#endif /* MDBX_CACHE_IS_COHERENT */ - -#ifndef MDBX_CACHELINE_SIZE -#if defined(SYSTEM_CACHE_ALIGNMENT_SIZE) -#define MDBX_CACHELINE_SIZE SYSTEM_CACHE_ALIGNMENT_SIZE -#elif defined(__ia64__) || defined(__ia64) || defined(_M_IA64) -#define MDBX_CACHELINE_SIZE 128 -#else -#define MDBX_CACHELINE_SIZE 64 -#endif -#endif /* MDBX_CACHELINE_SIZE */ - -#if MDBX_CACHE_IS_COHERENT -#define mdbx_coherent_barrier() mdbx_compiler_barrier() -#else -#define mdbx_coherent_barrier() mdbx_memory_barrier() -#endif - -#if defined(__mips) || defined(__mips__) || defined(__mips64) || \ - defined(__mips64) || defined(_M_MRX000) || defined(_MIPS_) -/* Only MIPS has explicit cache control */ -#include <sys/cachectl.h> -#endif - -static __inline void mdbx_invalidate_cache(void *addr, size_t nbytes) { - mdbx_coherent_barrier(); -#if defined(__mips) || defined(__mips__) || defined(__mips64) || \ - defined(__mips64) || defined(_M_MRX000) || defined(_MIPS_) -#if defined(DCACHE) - /* MIPS has cache coherency issues. - * Note: for any nbytes >= on-chip cache size, entire is flushed. */ - cacheflush(addr, nbytes, DCACHE); -#else -#error "Sorry, cacheflush() for MIPS not implemented" -#endif /* __mips__ */ -#else - /* LY: assume no relevant mmap/dcache issues. */ - (void)addr; - (void)nbytes; -#endif -} - -/*----------------------------------------------------------------------------*/ -/* libc compatibility stuff */ - -#ifndef mdbx_assert_fail -void mdbx_assert_fail(const MDBX_env *env, const char *msg, const char *func, - int line); -#endif /* mdbx_assert_fail */ - -#if __GLIBC_PREREQ(2, 1) -#define mdbx_asprintf asprintf -#else -int mdbx_asprintf(char **strp, const char *fmt, ...); -#endif - -#ifdef _MSC_VER - -#ifndef snprintf -#define snprintf(buffer, buffer_size, format, ...) \ - _snprintf_s(buffer, buffer_size, _TRUNCATE, format, __VA_ARGS__) -#endif /* snprintf */ - -#ifndef vsnprintf -#define vsnprintf(buffer, buffer_size, format, args) \ - _vsnprintf_s(buffer, buffer_size, _TRUNCATE, format, args) -#endif /* vsnprintf */ - -#ifdef _ASSERTE -#undef assert -#define assert _ASSERTE -#endif - -#endif /* _MSC_VER */ - -/*----------------------------------------------------------------------------*/ -/* OS abstraction layer stuff */ - -/* max bytes to write in one call */ -#define MAX_WRITE UINT32_C(0x3fff0000) - -/* Get the size of a memory page for the system. - * This is the basic size that the platform's memory manager uses, and is - * fundamental to the use of memory-mapped files. */ -static __inline size_t mdbx_syspagesize(void) { -#if defined(_WIN32) || defined(_WIN64) - SYSTEM_INFO si; - GetSystemInfo(&si); - return si.dwPageSize; -#else - return sysconf(_SC_PAGE_SIZE); -#endif -} - -static __inline char *mdbx_strdup(const char *str) { -#ifdef _MSC_VER - return _strdup(str); -#else - return strdup(str); -#endif -} - -static __inline int mdbx_get_errno(void) { -#if defined(_WIN32) || defined(_WIN64) - DWORD rc = GetLastError(); -#else - int rc = errno; -#endif - return rc; -} - -int mdbx_memalign_alloc(size_t alignment, size_t bytes, void **result); -void mdbx_memalign_free(void *ptr); - -int mdbx_condmutex_init(mdbx_condmutex_t *condmutex); -int mdbx_condmutex_lock(mdbx_condmutex_t *condmutex); -int mdbx_condmutex_unlock(mdbx_condmutex_t *condmutex); -int mdbx_condmutex_signal(mdbx_condmutex_t *condmutex); -int mdbx_condmutex_wait(mdbx_condmutex_t *condmutex); -int mdbx_condmutex_destroy(mdbx_condmutex_t *condmutex); - -int mdbx_fastmutex_init(mdbx_fastmutex_t *fastmutex); -int mdbx_fastmutex_acquire(mdbx_fastmutex_t *fastmutex); -int mdbx_fastmutex_release(mdbx_fastmutex_t *fastmutex); -int mdbx_fastmutex_destroy(mdbx_fastmutex_t *fastmutex); - -int mdbx_pwritev(mdbx_filehandle_t fd, struct iovec *iov, int iovcnt, - uint64_t offset, size_t expected_written); -int mdbx_pread(mdbx_filehandle_t fd, void *buf, size_t count, uint64_t offset); -int mdbx_pwrite(mdbx_filehandle_t fd, const void *buf, size_t count, - uint64_t offset); -int mdbx_write(mdbx_filehandle_t fd, const void *buf, size_t count); - -int mdbx_thread_create(mdbx_thread_t *thread, - THREAD_RESULT(THREAD_CALL *start_routine)(void *), - void *arg); -int mdbx_thread_join(mdbx_thread_t thread); - -int mdbx_filesync(mdbx_filehandle_t fd, bool fullsync); -int mdbx_filesize_sync(mdbx_filehandle_t fd); -int mdbx_ftruncate(mdbx_filehandle_t fd, uint64_t length); -int mdbx_filesize(mdbx_filehandle_t fd, uint64_t *length); -int mdbx_openfile(const char *pathname, int flags, mode_t mode, - mdbx_filehandle_t *fd, bool exclusive); -int mdbx_closefile(mdbx_filehandle_t fd); -int mdbx_removefile(const char *pathname); - -typedef struct mdbx_mmap_param { - union { - void *address; - uint8_t *dxb; - struct MDBX_lockinfo *lck; - }; - mdbx_filehandle_t fd; - size_t length; /* mapping length, but NOT a size of file or DB */ -#if defined(_WIN32) || defined(_WIN64) - size_t current; /* mapped region size, e.g. file and DB */ - uint64_t filesize; -#endif -#ifdef MDBX_OSAL_SECTION - MDBX_OSAL_SECTION section; -#endif -} mdbx_mmap_t; - -int mdbx_mmap(int flags, mdbx_mmap_t *map, size_t must, size_t limit); -int mdbx_munmap(mdbx_mmap_t *map); -int mdbx_mresize(int flags, mdbx_mmap_t *map, size_t current, size_t wanna); -#if defined(_WIN32) || defined(_WIN64) -typedef struct { - unsigned limit, count; - HANDLE handles[31]; -} mdbx_handle_array_t; -int mdbx_suspend_threads_before_remap(MDBX_env *env, - mdbx_handle_array_t **array); -int mdbx_resume_threads_after_remap(mdbx_handle_array_t *array); -#endif /* Windows */ -int mdbx_msync(mdbx_mmap_t *map, size_t offset, size_t length, int async); -int mdbx_check4nonlocal(mdbx_filehandle_t handle, int flags); - -static __inline mdbx_pid_t mdbx_getpid(void) { -#if defined(_WIN32) || defined(_WIN64) - return GetCurrentProcessId(); -#else - return getpid(); -#endif -} - -static __inline mdbx_tid_t mdbx_thread_self(void) { -#if defined(_WIN32) || defined(_WIN64) - return GetCurrentThreadId(); -#else - return pthread_self(); -#endif -} - -void mdbx_osal_jitter(bool tiny); - -/*----------------------------------------------------------------------------*/ -/* lck stuff */ - -#if defined(_WIN32) || defined(_WIN64) -#undef MDBX_OSAL_LOCK -#define MDBX_OSAL_LOCK_SIGN UINT32_C(0xF10C) -#else -#define MDBX_OSAL_LOCK pthread_mutex_t -#define MDBX_OSAL_LOCK_SIGN UINT32_C(0x8017) -#endif /* MDBX_OSAL_LOCK */ - -#ifdef MDBX_OSAL_LOCK -#define MDBX_OSAL_LOCK_SIZE sizeof(MDBX_OSAL_LOCK) -#else -#define MDBX_OSAL_LOCK_SIZE 0 -#endif /* MDBX_OSAL_LOCK_SIZE */ - -int mdbx_lck_init(MDBX_env *env); - -int mdbx_lck_seize(MDBX_env *env); -int mdbx_lck_downgrade(MDBX_env *env, bool complete); -int mdbx_lck_upgrade(MDBX_env *env); -void mdbx_lck_destroy(MDBX_env *env); - -int mdbx_rdt_lock(MDBX_env *env); -void mdbx_rdt_unlock(MDBX_env *env); - -LIBMDBX_API int mdbx_txn_lock(MDBX_env *env, bool dontwait); -LIBMDBX_API void mdbx_txn_unlock(MDBX_env *env); - -int mdbx_rpid_set(MDBX_env *env); -int mdbx_rpid_clear(MDBX_env *env); - -#if defined(_WIN32) || defined(_WIN64) -typedef struct MDBX_srwlock { - union { - struct { - long volatile readerCount; - long volatile writerCount; - }; - RTL_SRWLOCK native; - }; -} MDBX_srwlock; - -typedef void(WINAPI *MDBX_srwlock_function)(MDBX_srwlock *); -extern MDBX_srwlock_function mdbx_srwlock_Init, mdbx_srwlock_AcquireShared, - mdbx_srwlock_ReleaseShared, mdbx_srwlock_AcquireExclusive, - mdbx_srwlock_ReleaseExclusive; - -typedef BOOL(WINAPI *MDBX_GetFileInformationByHandleEx)( - _In_ HANDLE hFile, _In_ FILE_INFO_BY_HANDLE_CLASS FileInformationClass, - _Out_ LPVOID lpFileInformation, _In_ DWORD dwBufferSize); -extern MDBX_GetFileInformationByHandleEx mdbx_GetFileInformationByHandleEx; - -typedef BOOL(WINAPI *MDBX_GetVolumeInformationByHandleW)( - _In_ HANDLE hFile, _Out_opt_ LPWSTR lpVolumeNameBuffer, - _In_ DWORD nVolumeNameSize, _Out_opt_ LPDWORD lpVolumeSerialNumber, - _Out_opt_ LPDWORD lpMaximumComponentLength, - _Out_opt_ LPDWORD lpFileSystemFlags, - _Out_opt_ LPWSTR lpFileSystemNameBuffer, _In_ DWORD nFileSystemNameSize); - -extern MDBX_GetVolumeInformationByHandleW mdbx_GetVolumeInformationByHandleW; - -typedef DWORD(WINAPI *MDBX_GetFinalPathNameByHandleW)(_In_ HANDLE hFile, - _Out_ LPWSTR lpszFilePath, - _In_ DWORD cchFilePath, - _In_ DWORD dwFlags); -extern MDBX_GetFinalPathNameByHandleW mdbx_GetFinalPathNameByHandleW; - -typedef NTSTATUS(NTAPI *MDBX_NtFsControlFile)( - IN HANDLE FileHandle, IN OUT HANDLE Event, - IN OUT PVOID /* PIO_APC_ROUTINE */ ApcRoutine, IN OUT PVOID ApcContext, - OUT PIO_STATUS_BLOCK IoStatusBlock, IN ULONG FsControlCode, - IN OUT PVOID InputBuffer, IN ULONG InputBufferLength, - OUT OPTIONAL PVOID OutputBuffer, IN ULONG OutputBufferLength); - -extern MDBX_NtFsControlFile mdbx_NtFsControlFile; - -#endif /* Windows */ - -/* Checks reader by pid. - * - * Returns: - * MDBX_RESULT_TRUE, if pid is live (unable to acquire lock) - * MDBX_RESULT_FALSE, if pid is dead (lock acquired) - * or otherwise the errcode. */ -int mdbx_rpid_check(MDBX_env *env, mdbx_pid_t pid); - -/*----------------------------------------------------------------------------*/ -/* Atomics */ - -#if !defined(__cplusplus) && (__STDC_VERSION__ >= 201112L) && \ - !defined(__STDC_NO_ATOMICS__) && \ - (__GNUC_PREREQ(4, 9) || __CLANG_PREREQ(3, 8) || \ - !(defined(__GNUC__) || defined(__clang__))) -#include <stdatomic.h> -#elif defined(__GNUC__) || defined(__clang__) -/* LY: nothing required */ -#elif defined(_MSC_VER) -#pragma warning(disable : 4163) /* 'xyz': not available as an intrinsic */ -#pragma warning(disable : 4133) /* 'function': incompatible types - from \ - 'size_t' to 'LONGLONG' */ -#pragma warning(disable : 4244) /* 'return': conversion from 'LONGLONG' to \ - 'std::size_t', possible loss of data */ -#pragma warning(disable : 4267) /* 'function': conversion from 'size_t' to \ - 'long', possible loss of data */ -#pragma intrinsic(_InterlockedExchangeAdd, _InterlockedCompareExchange) -#pragma intrinsic(_InterlockedExchangeAdd64, _InterlockedCompareExchange64) -#elif defined(__APPLE__) -#include <libkern/OSAtomic.h> -#else -#error FIXME atomic-ops -#endif - -static __inline uint32_t mdbx_atomic_add32(volatile uint32_t *p, uint32_t v) { -#if !defined(__cplusplus) && defined(ATOMIC_VAR_INIT) - assert(atomic_is_lock_free(p)); - return atomic_fetch_add((_Atomic uint32_t *)p, v); -#elif defined(__GNUC__) || defined(__clang__) - return __sync_fetch_and_add(p, v); -#else -#ifdef _MSC_VER - return _InterlockedExchangeAdd(p, v); -#endif -#ifdef __APPLE__ - return OSAtomicAdd32(v, (volatile int32_t *)p); -#endif -#endif -} - -static __inline uint64_t mdbx_atomic_add64(volatile uint64_t *p, uint64_t v) { -#if !defined(__cplusplus) && defined(ATOMIC_VAR_INIT) - assert(atomic_is_lock_free(p)); - return atomic_fetch_add((_Atomic uint64_t *)p, v); -#elif defined(__GNUC__) || defined(__clang__) - return __sync_fetch_and_add(p, v); -#else -#ifdef _MSC_VER -#ifdef _WIN64 - return _InterlockedExchangeAdd64((volatile int64_t *)p, v); -#else - return InterlockedExchangeAdd64((volatile int64_t *)p, v); -#endif -#endif /* _MSC_VER */ -#ifdef __APPLE__ - return OSAtomicAdd64(v, (volatile int64_t *)p); -#endif -#endif -} - -#define mdbx_atomic_sub32(p, v) mdbx_atomic_add32(p, 0 - (v)) -#define mdbx_atomic_sub64(p, v) mdbx_atomic_add64(p, 0 - (v)) - -static __inline bool mdbx_atomic_compare_and_swap32(volatile uint32_t *p, - uint32_t c, uint32_t v) { -#if !defined(__cplusplus) && defined(ATOMIC_VAR_INIT) - assert(atomic_is_lock_free(p)); - return atomic_compare_exchange_strong((_Atomic uint32_t *)p, &c, v); -#elif defined(__GNUC__) || defined(__clang__) - return __sync_bool_compare_and_swap(p, c, v); -#else -#ifdef _MSC_VER - return c == _InterlockedCompareExchange(p, v, c); -#endif -#ifdef __APPLE__ - return c == OSAtomicCompareAndSwap32Barrier(c, v, (volatile int32_t *)p); -#endif -#endif -} - -static __inline bool mdbx_atomic_compare_and_swap64(volatile uint64_t *p, - uint64_t c, uint64_t v) { -#if !defined(__cplusplus) && defined(ATOMIC_VAR_INIT) - assert(atomic_is_lock_free(p)); - return atomic_compare_exchange_strong((_Atomic uint64_t *)p, &c, v); -#elif defined(__GNUC__) || defined(__clang__) - return __sync_bool_compare_and_swap(p, c, v); -#else -#ifdef _MSC_VER - return c == _InterlockedCompareExchange64((volatile int64_t *)p, v, c); -#endif -#ifdef __APPLE__ - return c == OSAtomicCompareAndSwap64Barrier(c, v, (volatile uint64_t *)p); -#endif -#endif -} - -/*----------------------------------------------------------------------------*/ - -#if defined(_MSC_VER) && _MSC_VER >= 1900 && _MSC_VER < 1920 -/* LY: MSVC 2015/2017 has buggy/inconsistent PRIuPTR/PRIxPTR macros - * for internal format-args checker. */ -#undef PRIuPTR -#undef PRIiPTR -#undef PRIdPTR -#undef PRIxPTR -#define PRIuPTR "Iu" -#define PRIiPTR "Ii" -#define PRIdPTR "Id" -#define PRIxPTR "Ix" -#define PRIuSIZE "zu" -#define PRIiSIZE "zi" -#define PRIdSIZE "zd" -#define PRIxSIZE "zx" -#endif /* fix PRI*PTR for _MSC_VER */ - -#ifndef PRIuSIZE -#define PRIuSIZE PRIuPTR -#define PRIiSIZE PRIiPTR -#define PRIdSIZE PRIdPTR -#define PRIxSIZE PRIxPTR -#endif /* PRI*SIZE macros for MSVC */ - -#ifdef _MSC_VER -#pragma warning(pop) -#endif diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/tools/CMakeLists.txt b/plugins/Dbx_mdbx/src/libmdbx/src/tools/CMakeLists.txt deleted file mode 100644 index 3e200098f8..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/tools/CMakeLists.txt +++ /dev/null @@ -1,19 +0,0 @@ -project(mdbx_tools) - -set(MDBX_TOOLS - mdbx_chk - mdbx_copy - mdbx_dump - mdbx_load - mdbx_stat - ) - -foreach (TOOL ${MDBX_TOOLS}) - add_executable(${TOOL} ${TOOL}.c) - - target_link_libraries(${TOOL} mdbx) - install(TARGETS ${TOOL} DESTINATION ${CMAKE_INSTALL_PREFIX}/bin COMPONENT mdbx) - if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${TOOL}.1) - install(FILES ${TOOL}.1 DESTINATION ${CMAKE_INSTALL_PREFIX}/man/man1 COMPONENT mdbx) - endif() -endforeach() diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_chk.c b/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_chk.c deleted file mode 100644 index 51096c4053..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_chk.c +++ /dev/null @@ -1,1152 +0,0 @@ -/* mdbx_chk.c - memory-mapped database check tool */ - -/* - * Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. */ - -#ifdef _MSC_VER -#if _MSC_VER > 1800 -#pragma warning(disable : 4464) /* relative include path contains '..' */ -#endif -#pragma warning(disable : 4996) /* The POSIX name is deprecated... */ -#endif /* _MSC_VER (warnings) */ - -#include "../bits.h" - -typedef struct flagbit { - int bit; - char *name; -} flagbit; - -flagbit dbflags[] = {{MDBX_DUPSORT, "dupsort"}, - {MDBX_INTEGERKEY, "integerkey"}, - {MDBX_REVERSEKEY, "reversekey"}, - {MDBX_DUPFIXED, "dupfixed"}, - {MDBX_REVERSEDUP, "reversedup"}, - {MDBX_INTEGERDUP, "integerdup"}, - {0, NULL}}; - -#if defined(_WIN32) || defined(_WIN64) -#include "wingetopt.h" - -static volatile BOOL user_break; -static BOOL WINAPI ConsoleBreakHandlerRoutine(DWORD dwCtrlType) { - (void)dwCtrlType; - user_break = true; - return true; -} - -#else /* WINDOWS */ - -static volatile sig_atomic_t user_break; -static void signal_handler(int sig) { - (void)sig; - user_break = 1; -} - -#endif /* !WINDOWS */ - -#define EXIT_INTERRUPTED (EXIT_FAILURE + 4) -#define EXIT_FAILURE_SYS (EXIT_FAILURE + 3) -#define EXIT_FAILURE_MDB (EXIT_FAILURE + 2) -#define EXIT_FAILURE_CHECK_MAJOR (EXIT_FAILURE + 1) -#define EXIT_FAILURE_CHECK_MINOR EXIT_FAILURE - -struct { - const char *dbi_names[MAX_DBI]; - uint64_t dbi_pages[MAX_DBI]; - uint64_t dbi_empty_pages[MAX_DBI]; - uint64_t dbi_payload_bytes[MAX_DBI]; - uint64_t dbi_lost_bytes[MAX_DBI]; - short *pagemap; - uint64_t total_payload_bytes; - uint64_t pgcount; -} walk; - -uint64_t total_unused_bytes; -int envflags = MDBX_RDONLY | MDBX_EXCLUSIVE; - -MDBX_env *env; -MDBX_txn *txn; -MDBX_envinfo envinfo; -MDBX_stat envstat; -size_t maxkeysize, userdb_count, skipped_subdb; -uint64_t reclaimable_pages, freedb_pages, lastpgno; -unsigned verbose, quiet; -const char *only_subdb; - -struct problem { - struct problem *pr_next; - uint64_t count; - const char *caption; -}; - -struct problem *problems_list; -uint64_t total_problems; - -static void -#ifdef __GNU__ - __attribute__((format(printf, 1, 2))) -#endif - print(const char *msg, ...) { - if (!quiet) { - va_list args; - - fflush(stderr); - va_start(args, msg); - vfprintf(stdout, msg, args); - va_end(args); - } -} - -static void -#ifdef __GNU__ - __attribute__((format(printf, 1, 2))) -#endif - error(const char *msg, ...) { - total_problems++; - - if (!quiet) { - va_list args; - - fflush(stdout); - va_start(args, msg); - vfprintf(stderr, msg, args); - va_end(args); - fflush(NULL); - } -} - -static void pagemap_cleanup(void) { - int i; - - for (i = 1; i < MAX_DBI; ++i) { - if (walk.dbi_names[i]) { - free((void *)walk.dbi_names[i]); - walk.dbi_names[i] = NULL; - } - } - - free(walk.pagemap); - walk.pagemap = NULL; -} - -static int pagemap_lookup_dbi(const char *dbi) { - static int last; - int i; - - if (last > 0 && strcmp(walk.dbi_names[last], dbi) == 0) - return last; - - for (i = 1; walk.dbi_names[i] && last < MAX_DBI; ++i) - if (strcmp(walk.dbi_names[i], dbi) == 0) - return last = i; - - if (i == MAX_DBI) - return -1; - - walk.dbi_names[i] = strdup(dbi); - - if (verbose > 1) { - print(" - found '%s' area\n", dbi); - fflush(NULL); - } - - return last = i; -} - -static void problem_add(const char *object, uint64_t entry_number, - const char *msg, const char *extra, ...) { - total_problems++; - - if (!quiet) { - int need_fflush = 0; - struct problem *p; - - for (p = problems_list; p; p = p->pr_next) - if (p->caption == msg) - break; - - if (!p) { - p = calloc(1, sizeof(*p)); - p->caption = msg; - p->pr_next = problems_list; - problems_list = p; - need_fflush = 1; - } - - p->count++; - if (verbose > 1) { - print(" %s #%" PRIu64 ": %s", object, entry_number, msg); - if (extra) { - va_list args; - printf(" ("); - va_start(args, extra); - vfprintf(stdout, extra, args); - va_end(args); - printf(")"); - } - printf("\n"); - if (need_fflush) - fflush(NULL); - } - } -} - -static struct problem *problems_push(void) { - struct problem *p = problems_list; - problems_list = NULL; - return p; -} - -static uint64_t problems_pop(struct problem *list) { - uint64_t count = 0; - - if (problems_list) { - int i; - - print(" - problems: "); - for (i = 0; problems_list; ++i) { - struct problem *p = problems_list->pr_next; - count += problems_list->count; - print("%s%s (%" PRIu64 ")", i ? ", " : "", problems_list->caption, - problems_list->count); - free(problems_list); - problems_list = p; - } - print("\n"); - fflush(NULL); - } - - problems_list = list; - return count; -} - -static int pgvisitor(uint64_t pgno, unsigned pgnumber, void *ctx, - const char *dbi, const char *type, size_t nentries, - size_t payload_bytes, size_t header_bytes, - size_t unused_bytes) { - (void)ctx; - - if (type) { - uint64_t page_bytes = payload_bytes + header_bytes + unused_bytes; - size_t page_size = (size_t)pgnumber * envstat.ms_psize; - int index = pagemap_lookup_dbi(dbi); - if (index < 0) - return MDBX_ENOMEM; - - if (verbose > 2 && (!only_subdb || strcmp(only_subdb, dbi) == 0)) { - if (pgnumber == 1) - print(" %s-page %" PRIu64, type, pgno); - else - print(" %s-span %" PRIu64 "[%u]", type, pgno, pgnumber); - print(" of %s: header %" PRIiPTR ", payload %" PRIiPTR - ", unused %" PRIiPTR "\n", - dbi, header_bytes, payload_bytes, unused_bytes); - } - - walk.pgcount += pgnumber; - - if (unused_bytes > page_size) - problem_add("page", pgno, "illegal unused-bytes", "%u < %i < %u", 0, - unused_bytes, envstat.ms_psize); - - if (header_bytes < (int)sizeof(long) || - (size_t)header_bytes >= envstat.ms_psize - sizeof(long)) - problem_add("page", pgno, "illegal header-length", - "%" PRIuPTR " < %i < %" PRIuPTR "", sizeof(long), - header_bytes, envstat.ms_psize - sizeof(long)); - if (payload_bytes < 1) { - if (nentries > 1) { - problem_add("page", pgno, "zero size-of-entry", - "payload %i bytes, %i entries", payload_bytes, nentries); - if ((size_t)header_bytes + unused_bytes < page_size) { - /* LY: hush a misuse error */ - page_bytes = page_size; - } - } else { - problem_add("page", pgno, "empty", "payload %i bytes, %i entries", - payload_bytes, nentries); - walk.dbi_empty_pages[index] += 1; - } - } - - if (page_bytes != page_size) { - problem_add("page", pgno, "misused", - "%" PRIu64 " != %" PRIu64 " (%ih + %ip + %iu)", page_size, - page_bytes, header_bytes, payload_bytes, unused_bytes); - if (page_size > page_bytes) - walk.dbi_lost_bytes[index] += page_size - page_bytes; - } else { - walk.dbi_payload_bytes[index] += payload_bytes + header_bytes; - walk.total_payload_bytes += payload_bytes + header_bytes; - } - - if (pgnumber) { - do { - if (pgno >= lastpgno) - problem_add("page", pgno, "wrong page-no", - "%" PRIu64 " > %" PRIu64 "", pgno, lastpgno); - else if (walk.pagemap[pgno]) - problem_add("page", pgno, "already used", "in %s", - walk.dbi_names[walk.pagemap[pgno]]); - else { - walk.pagemap[pgno] = (short)index; - walk.dbi_pages[index] += 1; - } - ++pgno; - } while (--pgnumber); - } - } - - return user_break ? MDBX_EINTR : MDBX_SUCCESS; -} - -typedef int(visitor)(const uint64_t record_number, const MDBX_val *key, - const MDBX_val *data); -static int process_db(MDBX_dbi dbi, char *name, visitor *handler, bool silent); - -static int handle_userdb(const uint64_t record_number, const MDBX_val *key, - const MDBX_val *data) { - (void)record_number; - (void)key; - (void)data; - return MDBX_SUCCESS; -} - -static int handle_freedb(const uint64_t record_number, const MDBX_val *key, - const MDBX_val *data) { - char *bad = ""; - pgno_t *iptr = data->iov_base; - txnid_t txnid = *(txnid_t *)key->iov_base; - - if (key->iov_len != sizeof(txnid_t)) - problem_add("entry", record_number, "wrong txn-id size", - "key-size %" PRIiPTR "", key->iov_len); - else if (txnid < 1 || txnid > envinfo.mi_recent_txnid) - problem_add("entry", record_number, "wrong txn-id", "%" PRIaTXN "", txnid); - - if (data->iov_len < sizeof(pgno_t) || data->iov_len % sizeof(pgno_t)) - problem_add("entry", record_number, "wrong idl size", "%" PRIuPTR "", - data->iov_len); - else { - const pgno_t number = *iptr++; - if (number >= MDBX_PNL_UM_MAX) - problem_add("entry", record_number, "wrong idl length", "%" PRIiPTR "", - number); - else if ((number + 1) * sizeof(pgno_t) != data->iov_len) - problem_add("entry", record_number, "mismatch idl length", - "%" PRIuSIZE " != %" PRIuSIZE "", - (number + 1) * sizeof(pgno_t), data->iov_len); - else { - freedb_pages += number; - if (envinfo.mi_latter_reader_txnid > txnid) - reclaimable_pages += number; - - pgno_t prev = - MDBX_PNL_ASCENDING ? NUM_METAS - 1 : (pgno_t)envinfo.mi_last_pgno + 1; - pgno_t span = 1; - for (unsigned i = 0; i < number; ++i) { - const pgno_t pg = iptr[i]; - if (pg < NUM_METAS || pg > envinfo.mi_last_pgno) - problem_add("entry", record_number, "wrong idl entry", - "%u < %" PRIaPGNO " < %" PRIu64 "", NUM_METAS, pg, - envinfo.mi_last_pgno); - else if (MDBX_PNL_DISORDERED(prev, pg)) { - bad = " [bad sequence]"; - problem_add("entry", record_number, "bad sequence", - "%" PRIaPGNO " <> %" PRIaPGNO "", prev, pg); - } - prev = pg; - while (i + span < number && - iptr[i + span] == (MDBX_PNL_ASCENDING ? pgno_add(pg, span) - : pgno_sub(pg, span))) - ++span; - } - if (verbose > 2 && !only_subdb) { - print(" transaction %" PRIaTXN ", %" PRIaPGNO - " pages, maxspan %" PRIaPGNO "%s\n", - txnid, number, span, bad); - if (verbose > 3) { - for (unsigned i = 0; i < number; i += span) { - const pgno_t pg = iptr[i]; - for (span = 1; - i + span < number && - iptr[i + span] == (MDBX_PNL_ASCENDING ? pgno_add(pg, span) - : pgno_sub(pg, span)); - ++span) - ; - if (span > 1) { - print(" %9" PRIaPGNO "[%" PRIaPGNO "]\n", pg, span); - } else - print(" %9" PRIaPGNO "\n", pg); - } - } - } - } - } - - return MDBX_SUCCESS; -} - -static int handle_maindb(const uint64_t record_number, const MDBX_val *key, - const MDBX_val *data) { - char *name; - int rc; - size_t i; - - name = key->iov_base; - for (i = 0; i < key->iov_len; ++i) { - if (name[i] < ' ') - return handle_userdb(record_number, key, data); - } - - name = malloc(key->iov_len + 1); - memcpy(name, key->iov_base, key->iov_len); - name[key->iov_len] = '\0'; - userdb_count++; - - rc = process_db(~0u, name, handle_userdb, false); - free(name); - if (rc != MDBX_INCOMPATIBLE) - return rc; - - return handle_userdb(record_number, key, data); -} - -static int process_db(MDBX_dbi dbi, char *name, visitor *handler, bool silent) { - MDBX_cursor *mc; - MDBX_stat ms; - MDBX_val key, data; - MDBX_val prev_key, prev_data; - unsigned flags; - int rc, i; - struct problem *saved_list; - uint64_t problems_count; - - uint64_t record_count = 0, dups = 0; - uint64_t key_bytes = 0, data_bytes = 0; - - if (dbi == ~0u) { - rc = mdbx_dbi_open(txn, name, 0, &dbi); - if (rc) { - if (!name || - rc != - MDBX_INCOMPATIBLE) /* LY: mainDB's record is not a user's DB. */ { - error(" - mdbx_open '%s' failed, error %d %s\n", name ? name : "main", - rc, mdbx_strerror(rc)); - } - return rc; - } - } - - if (dbi >= CORE_DBS && name && only_subdb && strcmp(only_subdb, name)) { - if (verbose) { - print("Skip processing '%s'...\n", name); - fflush(NULL); - } - skipped_subdb++; - return MDBX_SUCCESS; - } - - if (!silent && verbose) { - print("Processing '%s'...\n", name ? name : "main"); - fflush(NULL); - } - - rc = mdbx_dbi_flags(txn, dbi, &flags); - if (rc) { - error(" - mdbx_dbi_flags failed, error %d %s\n", rc, mdbx_strerror(rc)); - return rc; - } - - rc = mdbx_dbi_stat(txn, dbi, &ms, sizeof(ms)); - if (rc) { - error(" - mdbx_dbi_stat failed, error %d %s\n", rc, mdbx_strerror(rc)); - return rc; - } - - if (!silent && verbose) { - print(" - dbi-id %d, flags:", dbi); - if (!flags) - print(" none"); - else { - for (i = 0; dbflags[i].bit; i++) - if (flags & dbflags[i].bit) - print(" %s", dbflags[i].name); - } - print(" (0x%02X)\n", flags); - if (verbose > 1) { - print(" - page size %u, entries %" PRIu64 "\n", ms.ms_psize, - ms.ms_entries); - print(" - b-tree depth %u, pages: branch %" PRIu64 ", leaf %" PRIu64 - ", overflow %" PRIu64 "\n", - ms.ms_depth, ms.ms_branch_pages, ms.ms_leaf_pages, - ms.ms_overflow_pages); - } - } - - rc = mdbx_cursor_open(txn, dbi, &mc); - if (rc) { - error(" - mdbx_cursor_open failed, error %d %s\n", rc, mdbx_strerror(rc)); - return rc; - } - - saved_list = problems_push(); - prev_key.iov_base = NULL; - prev_data.iov_len = 0; - rc = mdbx_cursor_get(mc, &key, &data, MDBX_FIRST); - while (rc == MDBX_SUCCESS) { - if (user_break) { - print(" - interrupted by signal\n"); - fflush(NULL); - rc = MDBX_EINTR; - goto bailout; - } - - if (key.iov_len > maxkeysize) { - problem_add("entry", record_count, "key length exceeds max-key-size", - "%" PRIuPTR " > %u", key.iov_len, maxkeysize); - } else if ((flags & MDBX_INTEGERKEY) && key.iov_len != sizeof(uint64_t) && - key.iov_len != sizeof(uint32_t)) { - problem_add("entry", record_count, "wrong key length", - "%" PRIuPTR " != 4or8", key.iov_len); - } - - if ((flags & MDBX_INTEGERDUP) && data.iov_len != sizeof(uint64_t) && - data.iov_len != sizeof(uint32_t)) { - problem_add("entry", record_count, "wrong data length", - "%" PRIuPTR " != 4or8", data.iov_len); - } - - if (prev_key.iov_base) { - if ((flags & MDBX_DUPFIXED) && prev_data.iov_len != data.iov_len) { - problem_add("entry", record_count, "different data length", - "%" PRIuPTR " != %" PRIuPTR "", prev_data.iov_len, - data.iov_len); - } - - int cmp = mdbx_cmp(txn, dbi, &prev_key, &key); - if (cmp > 0) { - problem_add("entry", record_count, "broken ordering of entries", NULL); - } else if (cmp == 0) { - ++dups; - if (!(flags & MDBX_DUPSORT)) - problem_add("entry", record_count, "duplicated entries", NULL); - else if (flags & MDBX_INTEGERDUP) { - cmp = mdbx_dcmp(txn, dbi, &prev_data, &data); - if (cmp > 0) - problem_add("entry", record_count, - "broken ordering of multi-values", NULL); - } - } - } else if (verbose) { - if (flags & MDBX_INTEGERKEY) - print(" - fixed key-size %" PRIuPTR "\n", key.iov_len); - if (flags & (MDBX_INTEGERDUP | MDBX_DUPFIXED)) - print(" - fixed data-size %" PRIuPTR "\n", data.iov_len); - } - - if (handler) { - rc = handler(record_count, &key, &data); - if (rc) - goto bailout; - } - - record_count++; - key_bytes += key.iov_len; - data_bytes += data.iov_len; - - prev_key = key; - prev_data = data; - rc = mdbx_cursor_get(mc, &key, &data, MDBX_NEXT); - } - if (rc != MDBX_NOTFOUND) - error(" - mdbx_cursor_get failed, error %d %s\n", rc, mdbx_strerror(rc)); - else - rc = 0; - - if (record_count != ms.ms_entries) - problem_add("entry", record_count, "differentent number of entries", - "%" PRIuPTR " != %" PRIuPTR "", record_count, ms.ms_entries); -bailout: - problems_count = problems_pop(saved_list); - if (!silent && verbose) { - print(" - summary: %" PRIu64 " records, %" PRIu64 " dups, %" PRIu64 - " key's bytes, %" PRIu64 " data's " - "bytes, %" PRIu64 " problems\n", - record_count, dups, key_bytes, data_bytes, problems_count); - fflush(NULL); - } - - mdbx_cursor_close(mc); - return rc || problems_count; -} - -static void usage(char *prog) { - fprintf(stderr, - "usage: %s dbpath [-V] [-v] [-n] [-q] [-w] [-c] [-d] [-s subdb]\n" - " -V\t\tshow version\n" - " -v\t\tmore verbose, could be used multiple times\n" - " -n\t\tNOSUBDIR mode for open\n" - " -q\t\tbe quiet\n" - " -w\t\tlock DB for writing while checking\n" - " -d\t\tdisable page-by-page traversal of b-tree\n" - " -s subdb\tprocess a specific subdatabase only\n" - " -c\t\tforce cooperative mode (don't try exclusive)\n", - prog); - exit(EXIT_INTERRUPTED); -} - -const char *meta_synctype(uint64_t sign) { - switch (sign) { - case MDBX_DATASIGN_NONE: - return "no-sync/legacy"; - case MDBX_DATASIGN_WEAK: - return "weak"; - default: - return "steady"; - } -} - -static __inline bool meta_ot(txnid_t txn_a, uint64_t sign_a, txnid_t txn_b, - uint64_t sign_b, const bool roolback2steady) { - if (txn_a == txn_b) - return SIGN_IS_STEADY(sign_b); - - if (roolback2steady && SIGN_IS_STEADY(sign_a) != SIGN_IS_STEADY(sign_b)) - return SIGN_IS_STEADY(sign_b); - - return txn_a < txn_b; -} - -static __inline bool meta_eq(txnid_t txn_a, uint64_t sign_a, txnid_t txn_b, - uint64_t sign_b) { - if (txn_a != txn_b) - return false; - - if (SIGN_IS_STEADY(sign_a) != SIGN_IS_STEADY(sign_b)) - return false; - - return true; -} - -static __inline int meta_recent(const bool roolback2steady) { - - if (meta_ot(envinfo.mi_meta0_txnid, envinfo.mi_meta0_sign, - envinfo.mi_meta1_txnid, envinfo.mi_meta1_sign, roolback2steady)) - return meta_ot(envinfo.mi_meta2_txnid, envinfo.mi_meta2_sign, - envinfo.mi_meta1_txnid, envinfo.mi_meta1_sign, - roolback2steady) - ? 1 - : 2; - - return meta_ot(envinfo.mi_meta0_txnid, envinfo.mi_meta0_sign, - envinfo.mi_meta2_txnid, envinfo.mi_meta2_sign, roolback2steady) - ? 2 - : 0; -} - -static __inline int meta_tail(int head) { - - if (head == 0) - return meta_ot(envinfo.mi_meta1_txnid, envinfo.mi_meta1_sign, - envinfo.mi_meta2_txnid, envinfo.mi_meta2_sign, true) - ? 1 - : 2; - if (head == 1) - return meta_ot(envinfo.mi_meta0_txnid, envinfo.mi_meta0_sign, - envinfo.mi_meta2_txnid, envinfo.mi_meta2_sign, true) - ? 0 - : 2; - if (head == 2) - return meta_ot(envinfo.mi_meta0_txnid, envinfo.mi_meta0_sign, - envinfo.mi_meta1_txnid, envinfo.mi_meta1_sign, true) - ? 0 - : 1; - assert(false); - return -1; -} - -static int meta_steady(void) { return meta_recent(true); } - -static int meta_head(void) { return meta_recent(false); } - -void verbose_meta(int num, txnid_t txnid, uint64_t sign) { - print(" - meta-%d: %s %" PRIu64, num, meta_synctype(sign), txnid); - bool stay = true; - - const int steady = meta_steady(); - const int head = meta_head(); - if (num == steady && num == head) { - print(", head"); - stay = false; - } else if (num == steady) { - print(", head-steady"); - stay = false; - } else if (num == head) { - print(", head-weak"); - stay = false; - } - if (num == meta_tail(head)) { - print(", tail"); - stay = false; - } - if (stay) - print(", stay"); - - if (txnid > envinfo.mi_recent_txnid && - (envflags & (MDBX_EXCLUSIVE | MDBX_RDONLY)) == MDBX_EXCLUSIVE) - print(", rolled-back %" PRIu64 " (%" PRIu64 " >>> %" PRIu64 ")", - txnid - envinfo.mi_recent_txnid, txnid, envinfo.mi_recent_txnid); - print("\n"); -} - -static int check_meta_head(bool steady) { - switch (meta_recent(steady)) { - default: - assert(false); - error(" - unexpected internal error (%s)\n", - steady ? "meta_steady_head" : "meta_weak_head"); - __fallthrough; - case 0: - if (envinfo.mi_meta0_txnid != envinfo.mi_recent_txnid) { - print(" - meta-%d txn-id mismatch recent-txn-id (%" PRIi64 " != %" PRIi64 - ")\n", - 0, envinfo.mi_meta0_txnid, envinfo.mi_recent_txnid); - return 1; - } - break; - case 1: - if (envinfo.mi_meta1_txnid != envinfo.mi_recent_txnid) { - print(" - meta-%d txn-id mismatch recent-txn-id (%" PRIi64 " != %" PRIi64 - ")\n", - 1, envinfo.mi_meta1_txnid, envinfo.mi_recent_txnid); - return 1; - } - break; - case 2: - if (envinfo.mi_meta2_txnid != envinfo.mi_recent_txnid) { - print(" - meta-%d txn-id mismatch recent-txn-id (%" PRIi64 " != %" PRIi64 - ")\n", - 2, envinfo.mi_meta2_txnid, envinfo.mi_recent_txnid); - return 1; - } - } - return 0; -} - -static void print_size(const char *prefix, const uint64_t value, - const char *suffix) { - const char sf[] = - "KMGTPEZY"; /* LY: Kilo, Mega, Giga, Tera, Peta, Exa, Zetta, Yotta! */ - double k = 1024.0; - size_t i; - for (i = 0; sf[i + 1] && value / k > 1000.0; ++i) - k *= 1024; - print("%s%" PRIu64 " (%.2f %cb)%s", prefix, value, value / k, sf[i], suffix); -} - -int main(int argc, char *argv[]) { - int i, rc; - char *prog = argv[0]; - char *envname; - int problems_maindb = 0, problems_freedb = 0, problems_meta = 0; - int dont_traversal = 0; - bool locked = false; - - double elapsed; -#if defined(_WIN32) || defined(_WIN64) - uint64_t timestamp_start, timestamp_finish; - timestamp_start = GetTickCount64(); -#else - struct timespec timestamp_start, timestamp_finish; - if (clock_gettime(CLOCK_MONOTONIC, ×tamp_start)) { - rc = errno; - error("clock_gettime failed, error %d %s\n", rc, mdbx_strerror(rc)); - return EXIT_FAILURE_SYS; - } -#endif - - walk.dbi_names[0] = "@gc"; - atexit(pagemap_cleanup); - - if (argc < 2) { - usage(prog); - } - - while ((i = getopt(argc, argv, "Vvqnwcds:")) != EOF) { - switch (i) { - case 'V': - printf("%s (%s, build %s)\n", mdbx_version.git.describe, - mdbx_version.git.datetime, mdbx_build.datetime); - exit(EXIT_SUCCESS); - break; - case 'v': - verbose++; - break; - case 'q': - quiet = 1; - break; - case 'n': - envflags |= MDBX_NOSUBDIR; - break; - case 'w': - envflags &= ~MDBX_RDONLY; - break; - case 'c': - envflags &= ~MDBX_EXCLUSIVE; - break; - case 'd': - dont_traversal = 1; - break; - case 's': - if (only_subdb && strcmp(only_subdb, optarg)) - usage(prog); - only_subdb = optarg; - break; - default: - usage(prog); - } - } - - if (optind != argc - 1) - usage(prog); - -#if defined(_WIN32) || defined(_WIN64) - SetConsoleCtrlHandler(ConsoleBreakHandlerRoutine, true); -#else -#ifdef SIGPIPE - signal(SIGPIPE, signal_handler); -#endif -#ifdef SIGHUP - signal(SIGHUP, signal_handler); -#endif - signal(SIGINT, signal_handler); - signal(SIGTERM, signal_handler); -#endif /* !WINDOWS */ - - envname = argv[optind]; - print("Running mdbx_chk for %s in 'read-%s' mode...\n", envname, - (envflags & MDBX_RDONLY) ? "only" : "write"); - fflush(NULL); - - rc = mdbx_env_create(&env); - if (rc) { - error("mdbx_env_create failed, error %d %s\n", rc, mdbx_strerror(rc)); - return rc < 0 ? EXIT_FAILURE_MDB : EXIT_FAILURE_SYS; - } - - rc = mdbx_env_set_maxdbs(env, MAX_DBI); - if (rc) { - error("mdbx_env_set_maxdbs failed, error %d %s\n", rc, mdbx_strerror(rc)); - goto bailout; - } - - rc = mdbx_env_open(env, envname, envflags, 0664); - if ((envflags & MDBX_EXCLUSIVE) && - (rc == MDBX_BUSY || -#if defined(_WIN32) || defined(_WIN64) - rc == ERROR_LOCK_VIOLATION || rc == ERROR_SHARING_VIOLATION -#else - rc == EBUSY -#endif - )) { - envflags &= ~MDBX_EXCLUSIVE; - rc = mdbx_env_open(env, envname, envflags, 0664); - } - - if (rc) { - error("mdbx_env_open failed, error %d %s\n", rc, mdbx_strerror(rc)); - if (rc == MDBX_WANNA_RECOVERY && (envflags & MDBX_RDONLY)) - print("Please run %s in the read-write mode (with '-w' option).\n", prog); - goto bailout; - } - if (verbose) - print(" - %s mode\n", - (envflags & MDBX_EXCLUSIVE) ? "monopolistic" : "cooperative"); - - if ((envflags & MDBX_RDONLY) == 0) { - rc = mdbx_txn_lock(env, false); - if (rc != MDBX_SUCCESS) { - error("mdbx_txn_lock failed, error %d %s\n", rc, mdbx_strerror(rc)); - goto bailout; - } - locked = true; - } - - rc = mdbx_txn_begin(env, NULL, MDBX_RDONLY, &txn); - if (rc) { - error("mdbx_txn_begin() failed, error %d %s\n", rc, mdbx_strerror(rc)); - goto bailout; - } - - rc = mdbx_env_get_maxkeysize(env); - if (rc < 0) { - error("mdbx_env_get_maxkeysize failed, error %d %s\n", rc, - mdbx_strerror(rc)); - goto bailout; - } - maxkeysize = rc; - - rc = mdbx_env_info(env, &envinfo, sizeof(envinfo)); - if (rc) { - error("mdbx_env_info failed, error %d %s\n", rc, mdbx_strerror(rc)); - goto bailout; - } - - rc = mdbx_env_stat(env, &envstat, sizeof(envstat)); - if (rc) { - error("mdbx_env_stat failed, error %d %s\n", rc, mdbx_strerror(rc)); - goto bailout; - } - - lastpgno = envinfo.mi_last_pgno + 1; - errno = 0; - - if (verbose) { - print(" - pagesize %u (%u system), max keysize %" PRIuPTR - ", max readers %u\n", - envinfo.mi_dxb_pagesize, envinfo.mi_sys_pagesize, maxkeysize, - envinfo.mi_maxreaders); - print_size(" - mapsize ", envinfo.mi_mapsize, "\n"); - if (envinfo.mi_geo.lower == envinfo.mi_geo.upper) - print_size(" - fixed datafile: ", envinfo.mi_geo.current, ""); - else { - print_size(" - dynamic datafile: ", envinfo.mi_geo.lower, ""); - print_size(" .. ", envinfo.mi_geo.upper, ", "); - print_size("+", envinfo.mi_geo.grow, ", "); - print_size("-", envinfo.mi_geo.shrink, "\n"); - print_size(" - current datafile: ", envinfo.mi_geo.current, ""); - } - printf(", %" PRIu64 " pages\n", - envinfo.mi_geo.current / envinfo.mi_dxb_pagesize); - print(" - transactions: recent %" PRIu64 ", latter reader %" PRIu64 - ", lag %" PRIi64 "\n", - envinfo.mi_recent_txnid, envinfo.mi_latter_reader_txnid, - envinfo.mi_recent_txnid - envinfo.mi_latter_reader_txnid); - - verbose_meta(0, envinfo.mi_meta0_txnid, envinfo.mi_meta0_sign); - verbose_meta(1, envinfo.mi_meta1_txnid, envinfo.mi_meta1_sign); - verbose_meta(2, envinfo.mi_meta2_txnid, envinfo.mi_meta2_sign); - } - - if (verbose) - print(" - performs check for meta-pages clashes\n"); - if (meta_eq(envinfo.mi_meta0_txnid, envinfo.mi_meta0_sign, - envinfo.mi_meta1_txnid, envinfo.mi_meta1_sign)) { - print(" - meta-%d and meta-%d are clashed\n", 0, 1); - ++problems_meta; - } - if (meta_eq(envinfo.mi_meta1_txnid, envinfo.mi_meta1_sign, - envinfo.mi_meta2_txnid, envinfo.mi_meta2_sign)) { - print(" - meta-%d and meta-%d are clashed\n", 1, 2); - ++problems_meta; - } - if (meta_eq(envinfo.mi_meta2_txnid, envinfo.mi_meta2_sign, - envinfo.mi_meta0_txnid, envinfo.mi_meta0_sign)) { - print(" - meta-%d and meta-%d are clashed\n", 2, 0); - ++problems_meta; - } - - if (envflags & MDBX_EXCLUSIVE) { - if (verbose) - print(" - performs full check recent-txn-id with meta-pages\n"); - problems_meta += check_meta_head(true); - } else if (locked) { - if (verbose) - print(" - performs lite check recent-txn-id with meta-pages (not a " - "monopolistic mode)\n"); - problems_meta += check_meta_head(false); - } else if (verbose) { - print(" - skip check recent-txn-id with meta-pages (monopolistic or " - "read-write mode only)\n"); - } - - if (!dont_traversal) { - struct problem *saved_list; - uint64_t traversal_problems; - uint64_t empty_pages, lost_bytes; - - print("Traversal b-tree by txn#%" PRIaTXN "...\n", txn->mt_txnid); - fflush(NULL); - walk.pagemap = calloc((size_t)lastpgno, sizeof(*walk.pagemap)); - if (!walk.pagemap) { - rc = errno ? errno : MDBX_ENOMEM; - error("calloc failed, error %d %s\n", rc, mdbx_strerror(rc)); - goto bailout; - } - - saved_list = problems_push(); - rc = mdbx_env_pgwalk(txn, pgvisitor, NULL); - traversal_problems = problems_pop(saved_list); - - if (rc) { - if (rc == MDBX_EINTR && user_break) { - print(" - interrupted by signal\n"); - fflush(NULL); - } else { - error("mdbx_env_pgwalk failed, error %d %s\n", rc, mdbx_strerror(rc)); - } - goto bailout; - } - - uint64_t n; - for (n = 0; n < lastpgno; ++n) - if (!walk.pagemap[n]) - walk.dbi_pages[0] += 1; - - empty_pages = lost_bytes = 0; - for (i = 1; i < MAX_DBI && walk.dbi_names[i]; ++i) { - empty_pages += walk.dbi_empty_pages[i]; - lost_bytes += walk.dbi_lost_bytes[i]; - } - - if (verbose) { - uint64_t total_page_bytes = walk.pgcount * envstat.ms_psize; - print(" - dbi pages: %" PRIu64 " total", walk.pgcount); - if (verbose > 1) - for (i = 1; i < MAX_DBI && walk.dbi_names[i]; ++i) - print(", %s %" PRIu64 "", walk.dbi_names[i], walk.dbi_pages[i]); - print(", %s %" PRIu64 "\n", walk.dbi_names[0], walk.dbi_pages[0]); - if (verbose > 1) { - print(" - space info: total %" PRIu64 " bytes, payload %" PRIu64 - " (%.1f%%), unused " - "%" PRIu64 " (%.1f%%)\n", - total_page_bytes, walk.total_payload_bytes, - walk.total_payload_bytes * 100.0 / total_page_bytes, - total_page_bytes - walk.total_payload_bytes, - (total_page_bytes - walk.total_payload_bytes) * 100.0 / - total_page_bytes); - for (i = 1; i < MAX_DBI && walk.dbi_names[i]; ++i) { - uint64_t dbi_bytes = walk.dbi_pages[i] * envstat.ms_psize; - print(" %s: subtotal %" PRIu64 " bytes (%.1f%%)," - " payload %" PRIu64 " (%.1f%%), unused %" PRIu64 " (%.1f%%)", - walk.dbi_names[i], dbi_bytes, - dbi_bytes * 100.0 / total_page_bytes, walk.dbi_payload_bytes[i], - walk.dbi_payload_bytes[i] * 100.0 / dbi_bytes, - dbi_bytes - walk.dbi_payload_bytes[i], - (dbi_bytes - walk.dbi_payload_bytes[i]) * 100.0 / dbi_bytes); - if (walk.dbi_empty_pages[i]) - print(", %" PRIu64 " empty pages", walk.dbi_empty_pages[i]); - if (walk.dbi_lost_bytes[i]) - print(", %" PRIu64 " bytes lost", walk.dbi_lost_bytes[i]); - print("\n"); - } - } - print(" - summary: average fill %.1f%%", - walk.total_payload_bytes * 100.0 / total_page_bytes); - if (empty_pages) - print(", %" PRIuPTR " empty pages", empty_pages); - if (lost_bytes) - print(", %" PRIuPTR " bytes lost", lost_bytes); - print(", %" PRIuPTR " problems\n", traversal_problems); - } - } else if (verbose) { - print("Skipping b-tree walk...\n"); - fflush(NULL); - } - - if (!verbose) - print("Iterating DBIs...\n"); - problems_maindb = process_db(~0u, /* MAIN_DBI */ NULL, NULL, false); - problems_freedb = process_db(FREE_DBI, "free", handle_freedb, false); - - if (verbose) { - uint64_t value = envinfo.mi_mapsize / envstat.ms_psize; - double percent = value / 100.0; - print(" - pages info: %" PRIu64 " total", value); - value = envinfo.mi_geo.current / envinfo.mi_dxb_pagesize; - print(", backed %" PRIu64 " (%.1f%%)", value, value / percent); - print(", allocated %" PRIu64 " (%.1f%%)", lastpgno, lastpgno / percent); - - if (verbose > 1) { - value = envinfo.mi_mapsize / envstat.ms_psize - lastpgno; - print(", remained %" PRIu64 " (%.1f%%)", value, value / percent); - - value = lastpgno - freedb_pages; - print(", used %" PRIu64 " (%.1f%%)", value, value / percent); - - print(", gc %" PRIu64 " (%.1f%%)", freedb_pages, freedb_pages / percent); - - value = freedb_pages - reclaimable_pages; - print(", detained %" PRIu64 " (%.1f%%)", value, value / percent); - - print(", reclaimable %" PRIu64 " (%.1f%%)", reclaimable_pages, - reclaimable_pages / percent); - } - - value = - envinfo.mi_mapsize / envstat.ms_psize - lastpgno + reclaimable_pages; - print(", available %" PRIu64 " (%.1f%%)\n", value, value / percent); - } - - if (problems_maindb == 0 && problems_freedb == 0) { - if (!dont_traversal && - (envflags & (MDBX_EXCLUSIVE | MDBX_RDONLY)) != MDBX_RDONLY) { - if (walk.pgcount != lastpgno - freedb_pages) { - error("used pages mismatch (%" PRIu64 " != %" PRIu64 ")\n", - walk.pgcount, lastpgno - freedb_pages); - } - if (walk.dbi_pages[0] != freedb_pages) { - error("gc pages mismatch (%" PRIu64 " != %" PRIu64 ")\n", - walk.dbi_pages[0], freedb_pages); - } - } else if (verbose) { - print(" - skip check used and gc pages (btree-traversal with " - "monopolistic or read-write mode only)\n"); - } - - if (!process_db(MAIN_DBI, NULL, handle_maindb, true)) { - if (!userdb_count && verbose) - print(" - does not contain multiple databases\n"); - } - } - -bailout: - if (txn) - mdbx_txn_abort(txn); - if (locked) - mdbx_txn_unlock(env); - if (env) - mdbx_env_close(env); - fflush(NULL); - if (rc) { - if (rc < 0) - return (user_break) ? EXIT_INTERRUPTED : EXIT_FAILURE_SYS; - return EXIT_FAILURE_MDB; - } - -#if defined(_WIN32) || defined(_WIN64) - timestamp_finish = GetTickCount64(); - elapsed = (timestamp_finish - timestamp_start) * 1e-3; -#else - if (clock_gettime(CLOCK_MONOTONIC, ×tamp_finish)) { - rc = errno; - error("clock_gettime failed, error %d %s\n", rc, mdbx_strerror(rc)); - return EXIT_FAILURE_SYS; - } - elapsed = timestamp_finish.tv_sec - timestamp_start.tv_sec + - (timestamp_finish.tv_nsec - timestamp_start.tv_nsec) * 1e-9; -#endif /* !WINDOWS */ - - total_problems += problems_meta; - if (total_problems || problems_maindb || problems_freedb) { - print("Total %" PRIu64 " error(s) is detected, elapsed %.3f seconds.\n", - total_problems, elapsed); - if (problems_meta || problems_maindb || problems_freedb) - return EXIT_FAILURE_CHECK_MAJOR; - return EXIT_FAILURE_CHECK_MINOR; - } - print("No error is detected, elapsed %.3f seconds\n", elapsed); - return EXIT_SUCCESS; -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_chk.vcxproj b/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_chk.vcxproj deleted file mode 100644 index d4cc420d36..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_chk.vcxproj +++ /dev/null @@ -1,166 +0,0 @@ -<?xml version="1.0" encoding="utf-8"?> -<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> - 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<ClCompile Include="wingetopt.c" /> - </ItemGroup> - <ItemGroup> - <ClInclude Include="..\..\mdbx.h" /> - <ClInclude Include="wingetopt.h" /> - </ItemGroup> - <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" /> - <ImportGroup Label="ExtensionTargets"> - </ImportGroup> -</Project> diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_copy.1 b/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_copy.1 deleted file mode 100644 index db6c453abd..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_copy.1 +++ /dev/null @@ -1,57 +0,0 @@ -.\" Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru>. -.\" Copyright 2012-2015 Howard Chu, Symas Corp. All Rights Reserved. -.\" Copyright 2015,2016 Peter-Service R&D LLC <http://billing.ru/>. -.\" Copying restrictions apply. See COPYRIGHT/LICENSE. -.TH MDBX_COPY 1 "2014/06/20" "LMDB 0.9.14" -.SH NAME -mdbx_copy \- MDBX environment copy tool -.SH SYNOPSIS -.B mdbx_copy -[\c -.BR \-V ] -[\c -.BR \-c ] -[\c -.BR \-n ] -.B srcpath -[\c -.BR dstpath ] -.SH DESCRIPTION -The -.B mdbx_copy -utility copies an MDBX environment. The environment can -be copied regardless of whether it is currently in use. -No lockfile is created, since it gets recreated at need. - -If -.I dstpath -is specified it must be the path of an empty directory -for storing the backup. Otherwise, the backup will be -written to stdout. - -.SH OPTIONS -.TP -.BR \-V -Write the library version number to the standard output, and exit. -.TP -.BR \-c -Compact while copying. Only current data pages will be copied; freed -or unused pages will be omitted from the copy. This option will -slow down the backup process as it is more CPU-intensive. -Currently it fails if the environment has suffered a page leak. -.TP -.BR \-n -Open LDMB environment(s) which do not use subdirectories. - -.SH DIAGNOSTICS -Exit status is zero if no errors occur. -Errors result in a non-zero exit status and -a diagnostic message being written to standard error. -.SH CAVEATS -This utility can trigger significant file size growth if run -in parallel with write transactions, because pages which they -free during copying cannot be reused until the copy is done. -.SH "SEE ALSO" -.BR mdbx_stat (1) -.SH AUTHOR -Howard Chu of Symas Corporation <http://www.symas.com> diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_copy.c b/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_copy.c deleted file mode 100644 index ee3f739d4d..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_copy.c +++ /dev/null @@ -1,107 +0,0 @@ -/* mdbx_copy.c - memory-mapped database backup tool */ - -/* - * Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. */ - -#ifdef _MSC_VER -#if _MSC_VER > 1800 -#pragma warning(disable : 4464) /* relative include path contains '..' */ -#endif -#pragma warning(disable : 4996) /* The POSIX name is deprecated... */ -#endif /* _MSC_VER (warnings) */ - -#include "../bits.h" - -#if defined(_WIN32) || defined(_WIN64) -#include "wingetopt.h" - -static volatile BOOL user_break; -static BOOL WINAPI ConsoleBreakHandlerRoutine(DWORD dwCtrlType) { - (void)dwCtrlType; - user_break = true; - return true; -} - -#else /* WINDOWS */ - -static volatile sig_atomic_t user_break; -static void signal_handler(int sig) { - (void)sig; - user_break = 1; -} - -#endif /* !WINDOWS */ - -int main(int argc, char *argv[]) { - int rc; - MDBX_env *env = NULL; - const char *progname = argv[0], *act; - unsigned flags = MDBX_RDONLY; - unsigned cpflags = 0; - - for (; argc > 1 && argv[1][0] == '-'; argc--, argv++) { - if (argv[1][1] == 'n' && argv[1][2] == '\0') - flags |= MDBX_NOSUBDIR; - else if (argv[1][1] == 'c' && argv[1][2] == '\0') - cpflags |= MDBX_CP_COMPACT; - else if (argv[1][1] == 'V' && argv[1][2] == '\0') { - printf("%s (%s, build %s)\n", mdbx_version.git.describe, - mdbx_version.git.datetime, mdbx_build.datetime); - exit(EXIT_SUCCESS); - } else - argc = 0; - } - - if (argc < 2 || argc > 3) { - fprintf(stderr, "usage: %s [-V] [-c] [-n] srcpath [dstpath]\n", progname); - exit(EXIT_FAILURE); - } - -#if defined(_WIN32) || defined(_WIN64) - SetConsoleCtrlHandler(ConsoleBreakHandlerRoutine, true); -#else -#ifdef SIGPIPE - signal(SIGPIPE, signal_handler); -#endif -#ifdef SIGHUP - signal(SIGHUP, signal_handler); -#endif - signal(SIGINT, signal_handler); - signal(SIGTERM, signal_handler); -#endif /* !WINDOWS */ - - act = "opening environment"; - rc = mdbx_env_create(&env); - if (rc == MDBX_SUCCESS) { - rc = mdbx_env_open(env, argv[1], flags, 0640); - } - if (rc == MDBX_SUCCESS) { - act = "copying"; - if (argc == 2) { - mdbx_filehandle_t fd; -#if defined(_WIN32) || defined(_WIN64) - fd = GetStdHandle(STD_OUTPUT_HANDLE); -#else - fd = fileno(stdout); -#endif - rc = mdbx_env_copy2fd(env, fd, cpflags); - } else - rc = mdbx_env_copy(env, argv[2], cpflags); - } - if (rc) - fprintf(stderr, "%s: %s failed, error %d (%s)\n", progname, act, rc, - mdbx_strerror(rc)); - mdbx_env_close(env); - - return rc ? EXIT_FAILURE : EXIT_SUCCESS; -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_copy.vcxproj b/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_copy.vcxproj deleted file mode 100644 index 6910060fcb..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_copy.vcxproj +++ /dev/null @@ -1,166 +0,0 @@ -<?xml version="1.0" encoding="utf-8"?> -<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> - <ItemGroup Label="ProjectConfigurations"> - <ProjectConfiguration Include="Debug|Win32"> - <Configuration>Debug</Configuration> - <Platform>Win32</Platform> - </ProjectConfiguration> - <ProjectConfiguration Include="Release|Win32"> - <Configuration>Release</Configuration> - <Platform>Win32</Platform> - </ProjectConfiguration> - <ProjectConfiguration Include="Debug|x64"> - <Configuration>Debug</Configuration> - <Platform>x64</Platform> - </ProjectConfiguration> - <ProjectConfiguration Include="Release|x64"> - <Configuration>Release</Configuration> - 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</ClCompile> - <Link> - <SubSystem>Console</SubSystem> - <EnableCOMDATFolding>true</EnableCOMDATFolding> - <OptimizeReferences>true</OptimizeReferences> - </Link> - </ItemDefinitionGroup> - <ItemGroup> - <ProjectReference Include="..\..\dll.vcxproj"> - <Project>{6d19209b-ece7-4b9c-941c-0aa2b484f199}</Project> - </ProjectReference> - </ItemGroup> - <ItemGroup> - <ClCompile Include="mdbx_copy.c" /> - <ClCompile Include="wingetopt.c" /> - </ItemGroup> - <ItemGroup> - <ClInclude Include="..\..\mdbx.h" /> - <ClInclude Include="wingetopt.h" /> - </ItemGroup> - <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" /> - <ImportGroup Label="ExtensionTargets"> - </ImportGroup> -</Project> diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_dump.1 b/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_dump.1 deleted file mode 100644 index ccfcc0c9da..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_dump.1 +++ /dev/null @@ -1,77 +0,0 @@ -.\" Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru>. -.\" Copyright 2014-2015 Howard Chu, Symas Corp. All Rights Reserved. -.\" Copyright 2015,2016 Peter-Service R&D LLC <http://billing.ru/>. -.\" Copying restrictions apply. See COPYRIGHT/LICENSE. -.TH MDBX_DUMP 1 "2014/06/20" "LMDB 0.9.14" -.SH NAME -mdbx_dump \- MDBX environment export tool -.SH SYNOPSIS -.B mdbx_dump -[\c -.BR \-V ] -[\c -.BI \-f \ file\fR] -[\c -.BR \-l ] -[\c -.BR \-n ] -[\c -.BR \-p ] -[\c -.BR \-a \ | -.BI \-s \ subdb\fR] -.BR \ envpath -.SH DESCRIPTION -The -.B mdbx_dump -utility reads a database and writes its contents to the -standard output using a portable flat-text format -understood by the -.BR mdbx_load (1) -utility. -.SH OPTIONS -.TP -.BR \-V -Write the library version number to the standard output, and exit. -.TP -.BR \-f \ file -Write to the specified file instead of to the standard output. -.TP -.BR \-l -List the databases stored in the environment. Just the -names will be listed, no data will be output. -.TP -.BR \-n -Dump an MDBX database which does not use subdirectories. -.TP -.BR \-p -If characters in either the key or data items are printing characters (as -defined by isprint(3)), output them directly. This option permits users to -use standard text editors and tools to modify the contents of databases. - -Note: different systems may have different notions about what characters -are considered printing characters, and databases dumped in this manner may -be less portable to external systems. -.TP -.BR \-a -Dump all of the subdatabases in the environment. -.TP -.BR \-s \ subdb -Dump a specific subdatabase. If no database is specified, only the main database is dumped. -.SH DIAGNOSTICS -Exit status is zero if no errors occur. -Errors result in a non-zero exit status and -a diagnostic message being written to standard error. - -Dumping and reloading databases that use user-defined comparison functions -will result in new databases that use the default comparison functions. -\fBIn this case it is quite likely that the reloaded database will be -damaged beyond repair permitting neither record storage nor retrieval.\fP - -The only available workaround is to modify the source for the -.BR mdbx_load (1) -utility to load the database using the correct comparison functions. -.SH "SEE ALSO" -.BR mdbx_load (1) -.SH AUTHOR -Howard Chu of Symas Corporation <http://www.symas.com> diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_dump.c b/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_dump.c deleted file mode 100644 index c854e0ad15..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_dump.c +++ /dev/null @@ -1,336 +0,0 @@ -/* mdbx_dump.c - memory-mapped database dump tool */ - -/* - * Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. */ - -#ifdef _MSC_VER -#if _MSC_VER > 1800 -#pragma warning(disable : 4464) /* relative include path contains '..' */ -#endif -#pragma warning(disable : 4996) /* The POSIX name is deprecated... */ -#endif /* _MSC_VER (warnings) */ - -#include "../bits.h" -#include <ctype.h> - -#define PRINT 1 -static int mode; - -typedef struct flagbit { - int bit; - char *name; -} flagbit; - -flagbit dbflags[] = {{MDBX_REVERSEKEY, "reversekey"}, - {MDBX_DUPSORT, "dupsort"}, - {MDBX_INTEGERKEY, "integerkey"}, - {MDBX_DUPFIXED, "dupfixed"}, - {MDBX_INTEGERDUP, "integerdup"}, - {MDBX_REVERSEDUP, "reversedup"}, - {0, NULL}}; - -#if defined(_WIN32) || defined(_WIN64) -#include "wingetopt.h" - -static volatile BOOL user_break; -static BOOL WINAPI ConsoleBreakHandlerRoutine(DWORD dwCtrlType) { - (void)dwCtrlType; - user_break = true; - return true; -} - -#else /* WINDOWS */ - -static volatile sig_atomic_t user_break; -static void signal_handler(int sig) { - (void)sig; - user_break = 1; -} - -#endif /* !WINDOWS */ - -static const char hexc[] = "0123456789abcdef"; - -static void dumpbyte(unsigned char c) { - putchar(hexc[c >> 4]); - putchar(hexc[c & 0xf]); -} - -static void text(MDBX_val *v) { - unsigned char *c, *end; - - putchar(' '); - c = v->iov_base; - end = c + v->iov_len; - while (c < end) { - if (isprint(*c) && *c != '\\') { - putchar(*c); - } else { - putchar('\\'); - dumpbyte(*c); - } - c++; - } - putchar('\n'); -} - -static void dumpval(MDBX_val *v) { - unsigned char *c, *end; - - putchar(' '); - c = v->iov_base; - end = c + v->iov_len; - while (c < end) { - dumpbyte(*c++); - } - putchar('\n'); -} - -/* Dump in BDB-compatible format */ -static int dumpit(MDBX_txn *txn, MDBX_dbi dbi, char *name) { - MDBX_cursor *mc; - MDBX_stat ms; - MDBX_val key, data; - MDBX_envinfo info; - unsigned int flags; - int rc, i; - - rc = mdbx_dbi_flags(txn, dbi, &flags); - if (rc) - return rc; - - rc = mdbx_dbi_stat(txn, dbi, &ms, sizeof(ms)); - if (rc) - return rc; - - rc = mdbx_env_info(mdbx_txn_env(txn), &info, sizeof(info)); - if (rc) - return rc; - - printf("VERSION=3\n"); - printf("format=%s\n", mode & PRINT ? "print" : "bytevalue"); - if (name) - printf("database=%s\n", name); - printf("type=btree\n"); - printf("mapsize=%" PRIu64 "\n", info.mi_mapsize); - printf("maxreaders=%u\n", info.mi_maxreaders); - - for (i = 0; dbflags[i].bit; i++) - if (flags & dbflags[i].bit) - printf("%s=1\n", dbflags[i].name); - - printf("db_pagesize=%d\n", ms.ms_psize); - printf("HEADER=END\n"); - - rc = mdbx_cursor_open(txn, dbi, &mc); - if (rc) - return rc; - - while ((rc = mdbx_cursor_get(mc, &key, &data, MDBX_NEXT)) == MDBX_SUCCESS) { - if (user_break) { - rc = MDBX_EINTR; - break; - } - if (mode & PRINT) { - text(&key); - text(&data); - } else { - dumpval(&key); - dumpval(&data); - } - } - printf("DATA=END\n"); - if (rc == MDBX_NOTFOUND) - rc = MDBX_SUCCESS; - - return rc; -} - -static void usage(char *prog) { - fprintf(stderr, - "usage: %s [-V] [-f output] [-l] [-n] [-p] [-a|-s subdb] dbpath\n", - prog); - exit(EXIT_FAILURE); -} - -int main(int argc, char *argv[]) { - int i, rc; - MDBX_env *env; - MDBX_txn *txn; - MDBX_dbi dbi; - char *prog = argv[0]; - char *envname; - char *subname = NULL; - int alldbs = 0, envflags = 0, list = 0; - - if (argc < 2) { - usage(prog); - } - - /* -a: dump main DB and all subDBs - * -s: dump only the named subDB - * -n: use NOSUBDIR flag on env_open - * -p: use printable characters - * -f: write to file instead of stdout - * -V: print version and exit - * (default) dump only the main DB - */ - while ((i = getopt(argc, argv, "af:lnps:V")) != EOF) { - switch (i) { - case 'V': - printf("%s (%s, build %s)\n", mdbx_version.git.describe, - mdbx_version.git.datetime, mdbx_build.datetime); - exit(EXIT_SUCCESS); - break; - case 'l': - list = 1; - /*FALLTHROUGH*/; - __fallthrough; - case 'a': - if (subname) - usage(prog); - alldbs++; - break; - case 'f': - if (freopen(optarg, "w", stdout) == NULL) { - fprintf(stderr, "%s: %s: reopen: %s\n", prog, optarg, strerror(errno)); - exit(EXIT_FAILURE); - } - break; - case 'n': - envflags |= MDBX_NOSUBDIR; - break; - case 'p': - mode |= PRINT; - break; - case 's': - if (alldbs) - usage(prog); - subname = optarg; - break; - default: - usage(prog); - } - } - - if (optind != argc - 1) - usage(prog); - -#if defined(_WIN32) || defined(_WIN64) - SetConsoleCtrlHandler(ConsoleBreakHandlerRoutine, true); -#else -#ifdef SIGPIPE - signal(SIGPIPE, signal_handler); -#endif -#ifdef SIGHUP - signal(SIGHUP, signal_handler); -#endif - signal(SIGINT, signal_handler); - signal(SIGTERM, signal_handler); -#endif /* !WINDOWS */ - - envname = argv[optind]; - rc = mdbx_env_create(&env); - if (rc) { - fprintf(stderr, "mdbx_env_create failed, error %d %s\n", rc, - mdbx_strerror(rc)); - return EXIT_FAILURE; - } - - if (alldbs || subname) { - mdbx_env_set_maxdbs(env, 2); - } - - rc = mdbx_env_open(env, envname, envflags | MDBX_RDONLY, 0664); - if (rc) { - fprintf(stderr, "mdbx_env_open failed, error %d %s\n", rc, - mdbx_strerror(rc)); - goto env_close; - } - - rc = mdbx_txn_begin(env, NULL, MDBX_RDONLY, &txn); - if (rc) { - fprintf(stderr, "mdbx_txn_begin failed, error %d %s\n", rc, - mdbx_strerror(rc)); - goto env_close; - } - - rc = mdbx_dbi_open(txn, subname, 0, &dbi); - if (rc) { - fprintf(stderr, "mdbx_open failed, error %d %s\n", rc, mdbx_strerror(rc)); - goto txn_abort; - } - - if (alldbs) { - MDBX_cursor *cursor; - MDBX_val key; - int count = 0; - - rc = mdbx_cursor_open(txn, dbi, &cursor); - if (rc) { - fprintf(stderr, "mdbx_cursor_open failed, error %d %s\n", rc, - mdbx_strerror(rc)); - goto txn_abort; - } - while ((rc = mdbx_cursor_get(cursor, &key, NULL, MDBX_NEXT_NODUP)) == 0) { - if (user_break) { - rc = MDBX_EINTR; - break; - } - char *str; - MDBX_dbi db2; - if (memchr(key.iov_base, '\0', key.iov_len)) - continue; - count++; - str = malloc(key.iov_len + 1); - memcpy(str, key.iov_base, key.iov_len); - str[key.iov_len] = '\0'; - rc = mdbx_dbi_open(txn, str, 0, &db2); - if (rc == MDBX_SUCCESS) { - if (list) { - printf("%s\n", str); - list++; - } else { - rc = dumpit(txn, db2, str); - if (rc) - break; - } - mdbx_dbi_close(env, db2); - } - free(str); - if (rc) - continue; - } - mdbx_cursor_close(cursor); - if (!count) { - fprintf(stderr, "%s: %s does not contain multiple databases\n", prog, - envname); - rc = MDBX_NOTFOUND; - } else if (rc == MDBX_INCOMPATIBLE) { - /* LY: the record it not a named sub-db. */ - rc = MDBX_SUCCESS; - } - } else { - rc = dumpit(txn, dbi, subname); - } - if (rc && rc != MDBX_NOTFOUND) - fprintf(stderr, "%s: %s: %s\n", prog, envname, mdbx_strerror(rc)); - - mdbx_dbi_close(env, dbi); -txn_abort: - mdbx_txn_abort(txn); -env_close: - mdbx_env_close(env); - - return rc ? EXIT_FAILURE : EXIT_SUCCESS; -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_dump.vcxproj b/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_dump.vcxproj deleted file mode 100644 index b44eb19328..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_dump.vcxproj +++ /dev/null @@ -1,166 +0,0 @@ -<?xml version="1.0" encoding="utf-8"?> -<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> - <ItemGroup Label="ProjectConfigurations"> - <ProjectConfiguration Include="Debug|Win32"> - <Configuration>Debug</Configuration> - <Platform>Win32</Platform> - </ProjectConfiguration> - <ProjectConfiguration Include="Release|Win32"> - <Configuration>Release</Configuration> - <Platform>Win32</Platform> - </ProjectConfiguration> - <ProjectConfiguration Include="Debug|x64"> - <Configuration>Debug</Configuration> - <Platform>x64</Platform> - </ProjectConfiguration> - <ProjectConfiguration Include="Release|x64"> - <Configuration>Release</Configuration> - 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</ClCompile> - <Link> - <SubSystem>Console</SubSystem> - <EnableCOMDATFolding>true</EnableCOMDATFolding> - <OptimizeReferences>true</OptimizeReferences> - </Link> - </ItemDefinitionGroup> - <ItemGroup> - <ProjectReference Include="..\..\dll.vcxproj"> - <Project>{6d19209b-ece7-4b9c-941c-0aa2b484f199}</Project> - </ProjectReference> - </ItemGroup> - <ItemGroup> - <ClCompile Include="mdbx_dump.c" /> - <ClCompile Include="wingetopt.c" /> - </ItemGroup> - <ItemGroup> - <ClInclude Include="..\..\mdbx.h" /> - <ClInclude Include="wingetopt.h" /> - </ItemGroup> - <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" /> - <ImportGroup Label="ExtensionTargets"> - </ImportGroup> -</Project> diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_load.1 b/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_load.1 deleted file mode 100644 index 7a18a6c018..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_load.1 +++ /dev/null @@ -1,79 +0,0 @@ -.\" Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru>. -.\" Copyright 2014-2015 Howard Chu, Symas Corp. All Rights Reserved. -.\" Copyright 2015,2016 Peter-Service R&D LLC <http://billing.ru/>. -.\" Copying restrictions apply. See COPYRIGHT/LICENSE. -.TH MDBX_LOAD 1 "2014/06/20" "LMDB 0.9.14" -.SH NAME -mdbx_load \- MDBX environment import tool -.SH SYNOPSIS -.B mdbx_load -[\c -.BR \-V ] -[\c -.BI \-f \ file\fR] -[\c -.BR \-n ] -[\c -.BI \-s \ subdb\fR] -[\c -.BR \-N ] -[\c -.BR \-T ] -.BR \ envpath -.SH DESCRIPTION -The -.B mdbx_load -utility reads from the standard input and loads it into the -MDBX environment -.BR envpath . - -The input to -.B mdbx_load -must be in the output format specified by the -.BR mdbx_dump (1) -utility or as specified by the -.B -T -option below. -.SH OPTIONS -.TP -.BR \-V -Write the library version number to the standard output, and exit. -.TP -.BR \-f \ file -Read from the specified file instead of from the standard input. -.TP -.BR \-n -Load an MDBX database which does not use subdirectories. -.TP -.BR \-s \ subdb -Load a specific subdatabase. If no database is specified, data is loaded into the main database. -.TP -.BR \-N -Don't overwrite existing records when loading into an already existing database; just skip them. -.TP -.BR \-T -Load data from simple text files. The input must be paired lines of text, where the first -line of the pair is the key item, and the second line of the pair is its corresponding -data item. - -A simple escape mechanism, where newline and backslash (\\) characters are special, is -applied to the text input. Newline characters are interpreted as record separators. -Backslash characters in the text will be interpreted in one of two ways: If the backslash -character precedes another backslash character, the pair will be interpreted as a literal -backslash. If the backslash character precedes any other character, the two characters -following the backslash will be interpreted as a hexadecimal specification of a single -character; for example, \\0a is a newline character in the ASCII character set. - -For this reason, any backslash or newline characters that naturally occur in the text -input must be escaped to avoid misinterpretation by -.BR mdbx_load . - -.SH DIAGNOSTICS -Exit status is zero if no errors occur. -Errors result in a non-zero exit status and -a diagnostic message being written to standard error. - -.SH "SEE ALSO" -.BR mdbx_dump (1) -.SH AUTHOR -Howard Chu of Symas Corporation <http://www.symas.com> diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_load.c b/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_load.c deleted file mode 100644 index 4a337a1af3..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_load.c +++ /dev/null @@ -1,513 +0,0 @@ -/* mdbx_load.c - memory-mapped database load tool */ - -/* - * Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. */ - -#ifdef _MSC_VER -#if _MSC_VER > 1800 -#pragma warning(disable : 4464) /* relative include path contains '..' */ -#endif -#pragma warning(disable : 4996) /* The POSIX name is deprecated... */ -#endif /* _MSC_VER (warnings) */ - -#include "../bits.h" -#include <ctype.h> - -#if defined(_WIN32) || defined(_WIN64) -#include "wingetopt.h" - -static volatile BOOL user_break; -static BOOL WINAPI ConsoleBreakHandlerRoutine(DWORD dwCtrlType) { - (void)dwCtrlType; - user_break = true; - return true; -} - -#else /* WINDOWS */ - -static volatile sig_atomic_t user_break; -static void signal_handler(int sig) { - (void)sig; - user_break = 1; -} - -#endif /* !WINDOWS */ - -#define PRINT 1 -#define NOHDR 2 -static int mode; - -static char *subname = NULL; -static size_t lineno; -static int version; - -static int dbi_flags; -static char *prog; -static int Eof; - -static MDBX_envinfo envinfo; -static MDBX_val kbuf, dbuf; - -#define STRLENOF(s) (sizeof(s) - 1) - -typedef struct flagbit { - int bit; - char *name; - int len; -} flagbit; - -#define S(s) s, STRLENOF(s) - -flagbit dbflags[] = {{MDBX_REVERSEKEY, S("reversekey")}, - {MDBX_DUPSORT, S("dupsort")}, - {MDBX_INTEGERKEY, S("integerkey")}, - {MDBX_DUPFIXED, S("dupfixed")}, - {MDBX_INTEGERDUP, S("integerdup")}, - {MDBX_REVERSEDUP, S("reversedup")}, - {0, NULL, 0}}; - -static void readhdr(void) { - char *ptr; - - dbi_flags = 0; - while (fgets(dbuf.iov_base, (int)dbuf.iov_len, stdin) != NULL) { - lineno++; - if (!strncmp(dbuf.iov_base, "db_pagesize=", STRLENOF("db_pagesize=")) || - !strncmp(dbuf.iov_base, "duplicates=", STRLENOF("duplicates="))) { - /* LY: silently ignore information fields. */ - continue; - } else if (!strncmp(dbuf.iov_base, "VERSION=", STRLENOF("VERSION="))) { - version = atoi((char *)dbuf.iov_base + STRLENOF("VERSION=")); - if (version > 3) { - fprintf(stderr, "%s: line %" PRIiSIZE ": unsupported VERSION %d\n", - prog, lineno, version); - exit(EXIT_FAILURE); - } - } else if (!strncmp(dbuf.iov_base, "HEADER=END", STRLENOF("HEADER=END"))) { - break; - } else if (!strncmp(dbuf.iov_base, "format=", STRLENOF("format="))) { - if (!strncmp((char *)dbuf.iov_base + STRLENOF("FORMAT="), "print", - STRLENOF("print"))) - mode |= PRINT; - else if (strncmp((char *)dbuf.iov_base + STRLENOF("FORMAT="), "bytevalue", - STRLENOF("bytevalue"))) { - fprintf(stderr, "%s: line %" PRIiSIZE ": unsupported FORMAT %s\n", prog, - lineno, (char *)dbuf.iov_base + STRLENOF("FORMAT=")); - exit(EXIT_FAILURE); - } - } else if (!strncmp(dbuf.iov_base, "database=", STRLENOF("database="))) { - ptr = memchr(dbuf.iov_base, '\n', dbuf.iov_len); - if (ptr) - *ptr = '\0'; - if (subname) - free(subname); - subname = strdup((char *)dbuf.iov_base + STRLENOF("database=")); - } else if (!strncmp(dbuf.iov_base, "type=", STRLENOF("type="))) { - if (strncmp((char *)dbuf.iov_base + STRLENOF("type="), "btree", - STRLENOF("btree"))) { - fprintf(stderr, "%s: line %" PRIiSIZE ": unsupported type %s\n", prog, - lineno, (char *)dbuf.iov_base + STRLENOF("type=")); - exit(EXIT_FAILURE); - } - } else if (!strncmp(dbuf.iov_base, "mapaddr=", STRLENOF("mapaddr="))) { - int i; - ptr = memchr(dbuf.iov_base, '\n', dbuf.iov_len); - if (ptr) - *ptr = '\0'; - void *unused; - i = sscanf((char *)dbuf.iov_base + STRLENOF("mapaddr="), "%p", &unused); - if (i != 1) { - fprintf(stderr, "%s: line %" PRIiSIZE ": invalid mapaddr %s\n", prog, - lineno, (char *)dbuf.iov_base + STRLENOF("mapaddr=")); - exit(EXIT_FAILURE); - } - } else if (!strncmp(dbuf.iov_base, "mapsize=", STRLENOF("mapsize="))) { - int i; - ptr = memchr(dbuf.iov_base, '\n', dbuf.iov_len); - if (ptr) - *ptr = '\0'; - i = sscanf((char *)dbuf.iov_base + STRLENOF("mapsize="), "%" PRIu64 "", - &envinfo.mi_mapsize); - if (i != 1) { - fprintf(stderr, "%s: line %" PRIiSIZE ": invalid mapsize %s\n", prog, - lineno, (char *)dbuf.iov_base + STRLENOF("mapsize=")); - exit(EXIT_FAILURE); - } - } else if (!strncmp(dbuf.iov_base, - "maxreaders=", STRLENOF("maxreaders="))) { - int i; - ptr = memchr(dbuf.iov_base, '\n', dbuf.iov_len); - if (ptr) - *ptr = '\0'; - i = sscanf((char *)dbuf.iov_base + STRLENOF("maxreaders="), "%u", - &envinfo.mi_maxreaders); - if (i != 1) { - fprintf(stderr, "%s: line %" PRIiSIZE ": invalid maxreaders %s\n", prog, - lineno, (char *)dbuf.iov_base + STRLENOF("maxreaders=")); - exit(EXIT_FAILURE); - } - } else { - int i; - for (i = 0; dbflags[i].bit; i++) { - if (!strncmp(dbuf.iov_base, dbflags[i].name, dbflags[i].len) && - ((char *)dbuf.iov_base)[dbflags[i].len] == '=') { - if (((char *)dbuf.iov_base)[dbflags[i].len + 1] == '1') - dbi_flags |= dbflags[i].bit; - break; - } - } - if (!dbflags[i].bit) { - ptr = memchr(dbuf.iov_base, '=', dbuf.iov_len); - if (!ptr) { - fprintf(stderr, "%s: line %" PRIiSIZE ": unexpected format\n", prog, - lineno); - exit(EXIT_FAILURE); - } else { - *ptr = '\0'; - fprintf(stderr, - "%s: line %" PRIiSIZE ": unrecognized keyword ignored: %s\n", - prog, lineno, (char *)dbuf.iov_base); - } - } - } - } -} - -static void badend(void) { - fprintf(stderr, "%s: line %" PRIiSIZE ": unexpected end of input\n", prog, - lineno); -} - -static int unhex(unsigned char *c2) { - int x, c; - x = *c2++ & 0x4f; - if (x & 0x40) - x -= 55; - c = x << 4; - x = *c2 & 0x4f; - if (x & 0x40) - x -= 55; - c |= x; - return c; -} - -static int readline(MDBX_val *out, MDBX_val *buf) { - unsigned char *c1, *c2, *end; - size_t len, l2; - int c; - - if (!(mode & NOHDR)) { - c = fgetc(stdin); - if (c == EOF) { - Eof = 1; - return EOF; - } - if (c != ' ') { - lineno++; - if (fgets(buf->iov_base, (int)buf->iov_len, stdin) == NULL) { - badend: - Eof = 1; - badend(); - return EOF; - } - if (c == 'D' && !strncmp(buf->iov_base, "ATA=END", STRLENOF("ATA=END"))) - return EOF; - goto badend; - } - } - if (fgets(buf->iov_base, (int)buf->iov_len, stdin) == NULL) { - Eof = 1; - return EOF; - } - lineno++; - - c1 = buf->iov_base; - len = strlen((char *)c1); - l2 = len; - - /* Is buffer too short? */ - while (c1[len - 1] != '\n') { - buf->iov_base = realloc(buf->iov_base, buf->iov_len * 2); - if (!buf->iov_base) { - Eof = 1; - fprintf(stderr, "%s: line %" PRIiSIZE ": out of memory, line too long\n", - prog, lineno); - return EOF; - } - c1 = buf->iov_base; - c1 += l2; - if (fgets((char *)c1, (int)buf->iov_len + 1, stdin) == NULL) { - Eof = 1; - badend(); - return EOF; - } - buf->iov_len *= 2; - len = strlen((char *)c1); - l2 += len; - } - c1 = c2 = buf->iov_base; - len = l2; - c1[--len] = '\0'; - end = c1 + len; - - if (mode & PRINT) { - while (c2 < end) { - if (*c2 == '\\') { - if (c2[1] == '\\') { - c1++; - c2 += 2; - } else { - if (c2 + 3 > end || !isxdigit(c2[1]) || !isxdigit(c2[2])) { - Eof = 1; - badend(); - return EOF; - } - *c1++ = (char)unhex(++c2); - c2 += 2; - } - } else { - /* copies are redundant when no escapes were used */ - *c1++ = *c2++; - } - } - } else { - /* odd length not allowed */ - if (len & 1) { - Eof = 1; - badend(); - return EOF; - } - while (c2 < end) { - if (!isxdigit(*c2) || !isxdigit(c2[1])) { - Eof = 1; - badend(); - return EOF; - } - *c1++ = (char)unhex(c2); - c2 += 2; - } - } - c2 = out->iov_base = buf->iov_base; - out->iov_len = c1 - c2; - - return 0; -} - -static void usage(void) { - fprintf(stderr, "usage: %s [-V] [-f input] [-n] [-s name] [-N] [-T] dbpath\n", - prog); - exit(EXIT_FAILURE); -} - -int main(int argc, char *argv[]) { - int i, rc; - MDBX_env *env = NULL; - MDBX_txn *txn = NULL; - MDBX_cursor *mc = NULL; - MDBX_dbi dbi; - char *envname = NULL; - int envflags = 0, putflags = 0; - - prog = argv[0]; - - if (argc < 2) { - usage(); - } - - /* -f: load file instead of stdin - * -n: use NOSUBDIR flag on env_open - * -s: load into named subDB - * -N: use NOOVERWRITE on puts - * -T: read plaintext - * -V: print version and exit - */ - while ((i = getopt(argc, argv, "f:ns:NTV")) != EOF) { - switch (i) { - case 'V': - printf("%s (%s, build %s)\n", mdbx_version.git.describe, - mdbx_version.git.datetime, mdbx_build.datetime); - exit(EXIT_SUCCESS); - break; - case 'f': - if (freopen(optarg, "r", stdin) == NULL) { - fprintf(stderr, "%s: %s: reopen: %s\n", prog, optarg, strerror(errno)); - exit(EXIT_FAILURE); - } - break; - case 'n': - envflags |= MDBX_NOSUBDIR; - break; - case 's': - subname = strdup(optarg); - break; - case 'N': - putflags = MDBX_NOOVERWRITE | MDBX_NODUPDATA; - break; - case 'T': - mode |= NOHDR | PRINT; - break; - default: - usage(); - } - } - - if (optind != argc - 1) - usage(); - -#if defined(_WIN32) || defined(_WIN64) - SetConsoleCtrlHandler(ConsoleBreakHandlerRoutine, true); -#else -#ifdef SIGPIPE - signal(SIGPIPE, signal_handler); -#endif -#ifdef SIGHUP - signal(SIGHUP, signal_handler); -#endif - signal(SIGINT, signal_handler); - signal(SIGTERM, signal_handler); -#endif /* !WINDOWS */ - - dbuf.iov_len = 4096; - dbuf.iov_base = malloc(dbuf.iov_len); - - if (!(mode & NOHDR)) - readhdr(); - - envname = argv[optind]; - rc = mdbx_env_create(&env); - if (rc) { - fprintf(stderr, "mdbx_env_create failed, error %d %s\n", rc, - mdbx_strerror(rc)); - return EXIT_FAILURE; - } - - mdbx_env_set_maxdbs(env, 2); - - if (envinfo.mi_maxreaders) - mdbx_env_set_maxreaders(env, envinfo.mi_maxreaders); - - if (envinfo.mi_mapsize) { - if (envinfo.mi_mapsize > SIZE_MAX) { - fprintf(stderr, "mdbx_env_set_mapsize failed, error %d %s\n", rc, - mdbx_strerror(MDBX_TOO_LARGE)); - return EXIT_FAILURE; - } - mdbx_env_set_mapsize(env, (size_t)envinfo.mi_mapsize); - } - -#ifdef MDBX_FIXEDMAP - if (info.mi_mapaddr) - envflags |= MDBX_FIXEDMAP; -#endif - - rc = mdbx_env_open(env, envname, envflags, 0664); - if (rc) { - fprintf(stderr, "mdbx_env_open failed, error %d %s\n", rc, - mdbx_strerror(rc)); - goto env_close; - } - - kbuf.iov_len = mdbx_env_get_maxkeysize(env) * 2 + 2; - kbuf.iov_base = malloc(kbuf.iov_len); - - while (!Eof) { - if (user_break) { - rc = MDBX_EINTR; - break; - } - - MDBX_val key, data; - int batch = 0; - - rc = mdbx_txn_begin(env, NULL, 0, &txn); - if (rc) { - fprintf(stderr, "mdbx_txn_begin failed, error %d %s\n", rc, - mdbx_strerror(rc)); - goto env_close; - } - - rc = mdbx_dbi_open(txn, subname, dbi_flags | MDBX_CREATE, &dbi); - if (rc) { - fprintf(stderr, "mdbx_open failed, error %d %s\n", rc, mdbx_strerror(rc)); - goto txn_abort; - } - - rc = mdbx_cursor_open(txn, dbi, &mc); - if (rc) { - fprintf(stderr, "mdbx_cursor_open failed, error %d %s\n", rc, - mdbx_strerror(rc)); - goto txn_abort; - } - - while (1) { - rc = readline(&key, &kbuf); - if (rc) /* rc == EOF */ - break; - - rc = readline(&data, &dbuf); - if (rc) { - fprintf(stderr, "%s: line %" PRIiSIZE ": failed to read key value\n", - prog, lineno); - goto txn_abort; - } - - rc = mdbx_cursor_put(mc, &key, &data, putflags); - if (rc == MDBX_KEYEXIST && putflags) - continue; - if (rc) { - fprintf(stderr, "mdbx_cursor_put failed, error %d %s\n", rc, - mdbx_strerror(rc)); - goto txn_abort; - } - batch++; - if (batch == 100) { - rc = mdbx_txn_commit(txn); - if (rc) { - fprintf(stderr, "%s: line %" PRIiSIZE ": txn_commit: %s\n", prog, - lineno, mdbx_strerror(rc)); - goto env_close; - } - rc = mdbx_txn_begin(env, NULL, 0, &txn); - if (rc) { - fprintf(stderr, "mdbx_txn_begin failed, error %d %s\n", rc, - mdbx_strerror(rc)); - goto env_close; - } - rc = mdbx_cursor_open(txn, dbi, &mc); - if (rc) { - fprintf(stderr, "mdbx_cursor_open failed, error %d %s\n", rc, - mdbx_strerror(rc)); - goto txn_abort; - } - batch = 0; - } - } - rc = mdbx_txn_commit(txn); - txn = NULL; - if (rc) { - fprintf(stderr, "%s: line %" PRIiSIZE ": txn_commit: %s\n", prog, lineno, - mdbx_strerror(rc)); - goto env_close; - } - mdbx_dbi_close(env, dbi); - if (!(mode & NOHDR)) - readhdr(); - } - -txn_abort: - mdbx_txn_abort(txn); -env_close: - mdbx_env_close(env); - - return rc ? EXIT_FAILURE : EXIT_SUCCESS; -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_load.vcxproj b/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_load.vcxproj deleted file mode 100644 index 6af6cc457c..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_load.vcxproj +++ /dev/null @@ -1,166 +0,0 @@ -<?xml version="1.0" encoding="utf-8"?> -<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> - <ItemGroup Label="ProjectConfigurations"> - <ProjectConfiguration Include="Debug|Win32"> - <Configuration>Debug</Configuration> - <Platform>Win32</Platform> - </ProjectConfiguration> - <ProjectConfiguration Include="Release|Win32"> - <Configuration>Release</Configuration> - <Platform>Win32</Platform> - </ProjectConfiguration> - <ProjectConfiguration Include="Debug|x64"> - <Configuration>Debug</Configuration> - <Platform>x64</Platform> - </ProjectConfiguration> - <ProjectConfiguration Include="Release|x64"> - <Configuration>Release</Configuration> - 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</ClCompile> - <Link> - <SubSystem>Console</SubSystem> - <EnableCOMDATFolding>true</EnableCOMDATFolding> - <OptimizeReferences>true</OptimizeReferences> - </Link> - </ItemDefinitionGroup> - <ItemGroup> - <ProjectReference Include="..\..\dll.vcxproj"> - <Project>{6d19209b-ece7-4b9c-941c-0aa2b484f199}</Project> - </ProjectReference> - </ItemGroup> - <ItemGroup> - <ClCompile Include="mdbx_load.c" /> - <ClCompile Include="wingetopt.c" /> - </ItemGroup> - <ItemGroup> - <ClInclude Include="..\..\mdbx.h" /> - <ClInclude Include="wingetopt.h" /> - </ItemGroup> - <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" /> - <ImportGroup Label="ExtensionTargets"> - </ImportGroup> -</Project> diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_stat.1 b/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_stat.1 deleted file mode 100644 index ca427f7a66..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_stat.1 +++ /dev/null @@ -1,66 +0,0 @@ -.\" Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru>. -.\" Copyright 2012-2015 Howard Chu, Symas Corp. All Rights Reserved. -.\" Copyright 2015,2016 Peter-Service R&D LLC <http://billing.ru/>. -.\" Copying restrictions apply. See COPYRIGHT/LICENSE. -.TH MDBX_STAT 1 "2014/06/20" "LMDB 0.9.14" -.SH NAME -mdbx_stat \- MDBX environment status tool -.SH SYNOPSIS -.B mdbx_stat -[\c -.BR \-V ] -[\c -.BR \-e ] -[\c -.BR \-f [ f [ f ]]] -[\c -.BR \-n ] -[\c -.BR \-r [ r ]] -[\c -.BR \-a \ | -.BI \-s \ subdb\fR] -.BR \ envpath -.SH DESCRIPTION -The -.B mdbx_stat -utility displays the status of an MDBX environment. -.SH OPTIONS -.TP -.BR \-V -Write the library version number to the standard output, and exit. -.TP -.BR \-e -Display information about the database environment. -.TP -.BR \-f -Display information about the environment freelist. -If \fB\-ff\fP is given, summarize each freelist entry. -If \fB\-fff\fP is given, display the full list of page IDs in the freelist. -.TP -.BR \-n -Display the status of an MDBX database which does not use subdirectories. -.TP -.BR \-r -Display information about the environment reader table. -Shows the process ID, thread ID, and transaction ID for each active -reader slot. The process ID and transaction ID are in decimal, the -thread ID is in hexadecimal. The transaction ID is displayed as "-" -if the reader does not currently have a read transaction open. -If \fB\-rr\fP is given, check for stale entries in the reader -table and clear them. The reader table will be printed again -after the check is performed. -.TP -.BR \-a -Display the status of all of the subdatabases in the environment. -.TP -.BR \-s \ subdb -Display the status of a specific subdatabase. -.SH DIAGNOSTICS -Exit status is zero if no errors occur. -Errors result in a non-zero exit status and -a diagnostic message being written to standard error. -.SH "SEE ALSO" -.BR mdbx_copy (1) -.SH AUTHOR -Howard Chu of Symas Corporation <http://www.symas.com> diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_stat.c b/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_stat.c deleted file mode 100644 index a219b9ec0e..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_stat.c +++ /dev/null @@ -1,390 +0,0 @@ -/* mdbx_stat.c - memory-mapped database status tool */ - -/* - * Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. */ - -#ifdef _MSC_VER -#if _MSC_VER > 1800 -#pragma warning(disable : 4464) /* relative include path contains '..' */ -#endif -#pragma warning(disable : 4996) /* The POSIX name is deprecated... */ -#endif /* _MSC_VER (warnings) */ - -#include "../bits.h" - -#if defined(_WIN32) || defined(_WIN64) -#include "wingetopt.h" - -static volatile BOOL user_break; -static BOOL WINAPI ConsoleBreakHandlerRoutine(DWORD dwCtrlType) { - (void)dwCtrlType; - user_break = true; - return true; -} - -#else /* WINDOWS */ - -static volatile sig_atomic_t user_break; -static void signal_handler(int sig) { - (void)sig; - user_break = 1; -} - -#endif /* !WINDOWS */ - -static void prstat(MDBX_stat *ms) { - printf(" Pagesize: %u\n", ms->ms_psize); - printf(" Tree depth: %u\n", ms->ms_depth); - printf(" Branch pages: %" PRIu64 "\n", ms->ms_branch_pages); - printf(" Leaf pages: %" PRIu64 "\n", ms->ms_leaf_pages); - printf(" Overflow pages: %" PRIu64 "\n", ms->ms_overflow_pages); - printf(" Entries: %" PRIu64 "\n", ms->ms_entries); -} - -static void usage(char *prog) { - fprintf(stderr, - "usage: %s [-V] [-n] [-e] [-r[r]] [-f[f[f]]] [-a|-s subdb] dbpath\n", - prog); - exit(EXIT_FAILURE); -} - -int main(int argc, char *argv[]) { - int o, rc; - MDBX_env *env; - MDBX_txn *txn; - MDBX_dbi dbi; - MDBX_stat mst; - MDBX_envinfo mei; - char *prog = argv[0]; - char *envname; - char *subname = NULL; - int alldbs = 0, envinfo = 0, envflags = 0, freinfo = 0, rdrinfo = 0; - - if (argc < 2) { - usage(prog); - } - - /* -a: print stat of main DB and all subDBs - * -s: print stat of only the named subDB - * -e: print env info - * -f: print freelist info - * -r: print reader info - * -n: use NOSUBDIR flag on env_open - * -V: print version and exit - * (default) print stat of only the main DB - */ - while ((o = getopt(argc, argv, "Vaefnrs:")) != EOF) { - switch (o) { - case 'V': - printf("%s (%s, build %s)\n", mdbx_version.git.describe, - mdbx_version.git.datetime, mdbx_build.datetime); - exit(EXIT_SUCCESS); - break; - case 'a': - if (subname) - usage(prog); - alldbs++; - break; - case 'e': - envinfo++; - break; - case 'f': - freinfo++; - break; - case 'n': - envflags |= MDBX_NOSUBDIR; - break; - case 'r': - rdrinfo++; - break; - case 's': - if (alldbs) - usage(prog); - subname = optarg; - break; - default: - usage(prog); - } - } - - if (optind != argc - 1) - usage(prog); - -#if defined(_WIN32) || defined(_WIN64) - SetConsoleCtrlHandler(ConsoleBreakHandlerRoutine, true); -#else -#ifdef SIGPIPE - signal(SIGPIPE, signal_handler); -#endif -#ifdef SIGHUP - signal(SIGHUP, signal_handler); -#endif - signal(SIGINT, signal_handler); - signal(SIGTERM, signal_handler); -#endif /* !WINDOWS */ - - envname = argv[optind]; - rc = mdbx_env_create(&env); - if (rc) { - fprintf(stderr, "mdbx_env_create failed, error %d %s\n", rc, - mdbx_strerror(rc)); - return EXIT_FAILURE; - } - - if (alldbs || subname) { - mdbx_env_set_maxdbs(env, 4); - } - - rc = mdbx_env_open(env, envname, envflags | MDBX_RDONLY, 0664); - if (rc) { - fprintf(stderr, "mdbx_env_open failed, error %d %s\n", rc, - mdbx_strerror(rc)); - goto env_close; - } - - if (envinfo || freinfo) { - (void)mdbx_env_info(env, &mei, sizeof(mei)); - } else { - /* LY: zap warnings from gcc */ - memset(&mei, 0, sizeof(mei)); - } - - if (envinfo) { - (void)mdbx_env_stat(env, &mst, sizeof(mst)); - printf("Environment Info\n"); - printf(" Pagesize: %u\n", mst.ms_psize); - if (mei.mi_geo.lower != mei.mi_geo.upper) { - printf(" Dynamic datafile: %" PRIu64 "..%" PRIu64 " bytes (+%" PRIu64 - "/-%" PRIu64 "), %" PRIu64 "..%" PRIu64 " pages (+%" PRIu64 - "/-%" PRIu64 ")\n", - mei.mi_geo.lower, mei.mi_geo.upper, mei.mi_geo.grow, - mei.mi_geo.shrink, mei.mi_geo.lower / mst.ms_psize, - mei.mi_geo.upper / mst.ms_psize, mei.mi_geo.grow / mst.ms_psize, - mei.mi_geo.shrink / mst.ms_psize); - printf(" Current datafile: %" PRIu64 " bytes, %" PRIu64 " pages\n", - mei.mi_geo.current, mei.mi_geo.current / mst.ms_psize); - } else { - printf(" Fixed datafile: %" PRIu64 " bytes, %" PRIu64 " pages\n", - mei.mi_geo.current, mei.mi_geo.current / mst.ms_psize); - } - printf(" Current mapsize: %" PRIu64 " bytes, %" PRIu64 " pages \n", - mei.mi_mapsize, mei.mi_mapsize / mst.ms_psize); - printf(" Number of pages used: %" PRIu64 "\n", mei.mi_last_pgno + 1); - printf(" Last transaction ID: %" PRIu64 "\n", mei.mi_recent_txnid); - printf(" Tail transaction ID: %" PRIu64 " (%" PRIi64 ")\n", - mei.mi_latter_reader_txnid, - mei.mi_latter_reader_txnid - mei.mi_recent_txnid); - printf(" Max readers: %u\n", mei.mi_maxreaders); - printf(" Number of readers used: %u\n", mei.mi_numreaders); - } else { - /* LY: zap warnings from gcc */ - memset(&mst, 0, sizeof(mst)); - } - - if (rdrinfo) { - printf("Reader Table Status\n"); - rc = mdbx_reader_list(env, (MDBX_msg_func *)fputs, stdout); - if (rdrinfo > 1) { - int dead; - mdbx_reader_check(env, &dead); - printf(" %d stale readers cleared.\n", dead); - rc = mdbx_reader_list(env, (MDBX_msg_func *)fputs, stdout); - } - if (!(subname || alldbs || freinfo)) - goto env_close; - } - - rc = mdbx_txn_begin(env, NULL, MDBX_RDONLY, &txn); - if (rc) { - fprintf(stderr, "mdbx_txn_begin failed, error %d %s\n", rc, - mdbx_strerror(rc)); - goto env_close; - } - - if (freinfo) { - MDBX_cursor *cursor; - MDBX_val key, data; - pgno_t pages = 0, *iptr; - pgno_t reclaimable = 0; - - printf("Freelist Status\n"); - dbi = 0; - rc = mdbx_cursor_open(txn, dbi, &cursor); - if (rc) { - fprintf(stderr, "mdbx_cursor_open failed, error %d %s\n", rc, - mdbx_strerror(rc)); - goto txn_abort; - } - rc = mdbx_dbi_stat(txn, dbi, &mst, sizeof(mst)); - if (rc) { - fprintf(stderr, "mdbx_dbi_stat failed, error %d %s\n", rc, - mdbx_strerror(rc)); - goto txn_abort; - } - prstat(&mst); - while ((rc = mdbx_cursor_get(cursor, &key, &data, MDBX_NEXT)) == - MDBX_SUCCESS) { - if (user_break) { - rc = MDBX_EINTR; - break; - } - iptr = data.iov_base; - const pgno_t number = *iptr++; - - pages += number; - if (envinfo && mei.mi_latter_reader_txnid > *(size_t *)key.iov_base) - reclaimable += number; - - if (freinfo > 1) { - char *bad = ""; - pgno_t prev = - MDBX_PNL_ASCENDING ? NUM_METAS - 1 : (pgno_t)mei.mi_last_pgno + 1; - pgno_t span = 1; - for (unsigned i = 0; i < number; ++i) { - pgno_t pg = iptr[i]; - if (MDBX_PNL_DISORDERED(prev, pg)) - bad = " [bad sequence]"; - prev = pg; - while (i + span < number && - iptr[i + span] == (MDBX_PNL_ASCENDING ? pgno_add(pg, span) - : pgno_sub(pg, span))) - ++span; - } - printf(" Transaction %" PRIaTXN ", %" PRIaPGNO - " pages, maxspan %" PRIaPGNO "%s\n", - *(txnid_t *)key.iov_base, number, span, bad); - if (freinfo > 2) { - for (unsigned i = 0; i < number; i += span) { - const pgno_t pg = iptr[i]; - for (span = 1; - i + span < number && - iptr[i + span] == (MDBX_PNL_ASCENDING ? pgno_add(pg, span) - : pgno_sub(pg, span)); - ++span) - ; - if (span > 1) - printf(" %9" PRIaPGNO "[%" PRIaPGNO "]\n", pg, span); - else - printf(" %9" PRIaPGNO "\n", pg); - } - } - } - } - mdbx_cursor_close(cursor); - - switch (rc) { - case MDBX_SUCCESS: - case MDBX_NOTFOUND: - break; - case MDBX_EINTR: - fprintf(stderr, "Interrupted by signal/user\n"); - goto txn_abort; - default: - fprintf(stderr, "mdbx_cursor_get failed, error %d %s\n", rc, - mdbx_strerror(rc)); - goto txn_abort; - } - - if (envinfo) { - uint64_t value = mei.mi_mapsize / mst.ms_psize; - double percent = value / 100.0; - printf("Page Allocation Info\n"); - printf(" Max pages: %" PRIu64 " 100%%\n", value); - - value = mei.mi_last_pgno + 1; - printf(" Pages used: %" PRIu64 " %.1f%%\n", value, value / percent); - - value = mei.mi_mapsize / mst.ms_psize - (mei.mi_last_pgno + 1); - printf(" Remained: %" PRIu64 " %.1f%%\n", value, value / percent); - - value = mei.mi_last_pgno + 1 - pages; - printf(" Used now: %" PRIu64 " %.1f%%\n", value, value / percent); - - value = pages; - printf(" Unallocated: %" PRIu64 " %.1f%%\n", value, value / percent); - - value = pages - reclaimable; - printf(" Detained: %" PRIu64 " %.1f%%\n", value, value / percent); - - value = reclaimable; - printf(" Reclaimable: %" PRIu64 " %.1f%%\n", value, value / percent); - - value = - mei.mi_mapsize / mst.ms_psize - (mei.mi_last_pgno + 1) + reclaimable; - printf(" Available: %" PRIu64 " %.1f%%\n", value, value / percent); - } else - printf(" Free pages: %" PRIaPGNO "\n", pages); - } - - rc = mdbx_dbi_open(txn, subname, 0, &dbi); - if (rc) { - fprintf(stderr, "mdbx_open failed, error %d %s\n", rc, mdbx_strerror(rc)); - goto txn_abort; - } - - rc = mdbx_dbi_stat(txn, dbi, &mst, sizeof(mst)); - if (rc) { - fprintf(stderr, "mdbx_dbi_stat failed, error %d %s\n", rc, - mdbx_strerror(rc)); - goto txn_abort; - } - printf("Status of %s\n", subname ? subname : "Main DB"); - prstat(&mst); - - if (alldbs) { - MDBX_cursor *cursor; - MDBX_val key; - - rc = mdbx_cursor_open(txn, dbi, &cursor); - if (rc) { - fprintf(stderr, "mdbx_cursor_open failed, error %d %s\n", rc, - mdbx_strerror(rc)); - goto txn_abort; - } - while ((rc = mdbx_cursor_get(cursor, &key, NULL, MDBX_NEXT_NODUP)) == 0) { - char *str; - MDBX_dbi db2; - if (memchr(key.iov_base, '\0', key.iov_len)) - continue; - str = malloc(key.iov_len + 1); - memcpy(str, key.iov_base, key.iov_len); - str[key.iov_len] = '\0'; - rc = mdbx_dbi_open(txn, str, 0, &db2); - if (rc == MDBX_SUCCESS) - printf("Status of %s\n", str); - free(str); - if (rc) - continue; - rc = mdbx_dbi_stat(txn, db2, &mst, sizeof(mst)); - if (rc) { - fprintf(stderr, "mdbx_dbi_stat failed, error %d %s\n", rc, - mdbx_strerror(rc)); - goto txn_abort; - } - prstat(&mst); - mdbx_dbi_close(env, db2); - } - mdbx_cursor_close(cursor); - } - - if (rc == MDBX_NOTFOUND) - rc = MDBX_SUCCESS; - - mdbx_dbi_close(env, dbi); -txn_abort: - mdbx_txn_abort(txn); -env_close: - mdbx_env_close(env); - - return rc ? EXIT_FAILURE : EXIT_SUCCESS; -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_stat.vcxproj b/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_stat.vcxproj deleted file mode 100644 index 1adcefde89..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/tools/mdbx_stat.vcxproj +++ /dev/null @@ -1,166 +0,0 @@ -<?xml version="1.0" encoding="utf-8"?> -<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> - <ItemGroup Label="ProjectConfigurations"> - <ProjectConfiguration Include="Debug|Win32"> - <Configuration>Debug</Configuration> - <Platform>Win32</Platform> - </ProjectConfiguration> - <ProjectConfiguration Include="Release|Win32"> - <Configuration>Release</Configuration> - <Platform>Win32</Platform> - </ProjectConfiguration> - <ProjectConfiguration Include="Debug|x64"> - <Configuration>Debug</Configuration> - <Platform>x64</Platform> - </ProjectConfiguration> - <ProjectConfiguration Include="Release|x64"> - <Configuration>Release</Configuration> - 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* - * Code given out at the 1985 UNIFORUM conference in Dallas. - */ - -/*----------------------------------------------------------------------------*/ -/* Microsoft compiler generates a lot of warning for self includes... */ - -#ifdef _MSC_VER -#pragma warning(push, 1) -#pragma warning(disable : 4548) /* expression before comma has no effect; \ - expected expression with side - effect */ -#pragma warning(disable : 4530) /* C++ exception handler used, but unwind \ - * semantics are not enabled. Specify /EHsc */ -#pragma warning(disable : 4577) /* 'noexcept' used with no exception handling \ - * mode specified; termination on exception is \ - * not guaranteed. Specify /EHsc */ -#if !defined(_CRT_SECURE_NO_WARNINGS) -#define _CRT_SECURE_NO_WARNINGS -#endif -#endif /* _MSC_VER (warnings) */ - -#include "wingetopt.h" -#include <stdio.h> -#include <string.h> - -#ifdef _MSC_VER -#pragma warning(pop) -#endif -/*----------------------------------------------------------------------------*/ - -#ifndef NULL -#define NULL 0 -#endif - -#ifndef EOF -#define EOF (-1) -#endif - -#define ERR(s, c) \ - if (opterr) { \ - fputs(argv[0], stderr); \ - fputs(s, stderr); \ - fputc(c, stderr); \ - } - -int opterr = 1; -int optind = 1; -int optopt; -char *optarg; - -int getopt(int argc, char *const argv[], const char *opts) { - static int sp = 1; - int c; - char *cp; - - if (sp == 1) { - if (optind >= argc || argv[optind][0] != '-' || argv[optind][1] == '\0') - return EOF; - else if (strcmp(argv[optind], "--") == 0) { - optind++; - return EOF; - } - } - optopt = c = argv[optind][sp]; - if (c == ':' || (cp = strchr(opts, c)) == NULL) { - ERR(": illegal option -- ", c); - if (argv[optind][++sp] == '\0') { - optind++; - sp = 1; - } - return '?'; - } - if (*++cp == ':') { - if (argv[optind][sp + 1] != '\0') - optarg = &argv[optind++][sp + 1]; - else if (++optind >= argc) { - ERR(": option requires an argument -- ", c); - sp = 1; - return '?'; - } else - optarg = argv[optind++]; - sp = 1; - } else { - if (argv[optind][++sp] == '\0') { - sp = 1; - optind++; - } - optarg = NULL; - } - return c; -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/tools/wingetopt.h b/plugins/Dbx_mdbx/src/libmdbx/src/tools/wingetopt.h deleted file mode 100644 index fdff368374..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/tools/wingetopt.h +++ /dev/null @@ -1,26 +0,0 @@ -/* - * POSIX getopt for Windows - * - * AT&T Public License - * - * Code given out at the 1985 UNIFORUM conference in Dallas. - */ - -#ifndef _WINGETOPT_H_ -#define _WINGETOPT_H_ - -#ifdef __cplusplus -extern "C" { -#endif - -extern int opterr; -extern int optind; -extern int optopt; -extern char *optarg; -int getopt(int argc, char *const argv[], const char *optstring); - -#ifdef __cplusplus -} -#endif - -#endif /* _GETOPT_H_ */ diff --git a/plugins/Dbx_mdbx/src/libmdbx/src/version.c b/plugins/Dbx_mdbx/src/libmdbx/src/version.c deleted file mode 100644 index dfb4a5724c..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/src/version.c +++ /dev/null @@ -1,34 +0,0 @@ -/* - * Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#include "./bits.h" - -#if MDBX_VERSION_MAJOR != 0 || MDBX_VERSION_MINOR != 2 -#error "API version mismatch!" -#endif - -#define MDBX_VERSION_RELEASE 0 -#define MDBX_VERSION_REVISION 2 - -/*LIBMDBX_EXPORTS*/ const mdbx_version_info mdbx_version = { - MDBX_VERSION_MAJOR, - MDBX_VERSION_MINOR, - MDBX_VERSION_RELEASE, - MDBX_VERSION_REVISION, - {"@MDBX_GIT_TIMESTAMP@", "@MDBX_GIT_TREE@", "@MDBX_GIT_COMMIT@", - "@MDBX_GIT_DESCRIBE@"}}; - -/*LIBMDBX_EXPORTS*/ const mdbx_build_info mdbx_build = { - "@MDBX_BUILD_TIMESTAMP@", "@MDBX_BUILD_TAGRET@", "@MDBX_BUILD_OPTIONS@", - "@MDBX_BUILD_COMPILER@", "@MDBX_BUILD_FLAGS@"}; diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/CMakeLists.txt b/plugins/Dbx_mdbx/src/libmdbx/test/CMakeLists.txt deleted file mode 100644 index 3ed01bddf9..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/CMakeLists.txt +++ /dev/null @@ -1,34 +0,0 @@ -set(TARGET mdbx_test) -project(${TARGET}) - -set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-missing-declarations") -set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-cast-qual") - -add_executable(${TARGET} - base.h - cases.cc - chrono.cc - chrono.h - config.cc - config.h - dead.cc - hill.cc - jitter.cc - keygen.cc - keygen.h - log.cc - log.h - main.cc - osal.h - osal-unix.cc - test.cc - test.h - try.cc - utils.cc - utils.h -) - -target_link_libraries(${TARGET} - mdbx - ) - diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/base.h b/plugins/Dbx_mdbx/src/libmdbx/test/base.h deleted file mode 100644 index b23f776aa3..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/base.h +++ /dev/null @@ -1,109 +0,0 @@ -/* - * Copyright 2017-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#pragma once - -#ifndef NOMINMAX -#define NOMINMAX -#endif - -#if defined(_WIN32) || defined(_WIN64) || defined(_WINDOWS) -#ifdef _MSC_VER -#define _CRT_SECURE_NO_WARNINGS -#pragma warning(push, 1) -#pragma warning(disable : 4548) /* expression before comma has no effect; \ - expected expression with side - effect */ -#pragma warning(disable : 4530) /* C++ exception handler used, but unwind \ - semantics are not enabled. Specify /EHsc */ -#pragma warning(disable : 4577) /* 'noexcept' used with no exception handling \ - mode specified; termination on exception \ - is not guaranteed. Specify /EHsc */ -#endif /* _MSC_VER (warnings) */ - -/* If you wish to build your application for a previous Windows platform, - * include WinSDKVer.h and set the _WIN32_WINNT macro to the platform you - * wish to support before including SDKDDKVer.h. - * - * TODO: #define _WIN32_WINNT WIN32_MUSTDIE */ -#include <SDKDDKVer.h> -#endif /* WINDOWS */ - -#include <errno.h> -#include <limits.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <time.h> - -#if defined(_WIN32) || defined(_WIN64) || defined(_WINDOWS) -#include <io.h> -#else -#include <fcntl.h> -#include <sys/param.h> -#include <sys/stat.h> -#include <sys/time.h> -#include <sys/types.h> -#include <unistd.h> -#endif - -#ifdef _BSD_SOURCE -#include <endian.h> -#endif - -#include <algorithm> -#include <cassert> -#include <cinttypes> // for PRId64, PRIu64 -#include <cstdarg> -#include <cstddef> -#include <cstdint> -#include <map> -#include <memory> -#include <set> -#include <string> -#include <type_traits> -#include <unordered_map> -#include <unordered_set> -#include <vector> - -#include "../mdbx.h" -#include "../src/defs.h" -#include "../src/osal.h" - -#if !defined(__thread) && (defined(_MSC_VER) || defined(__DMC__)) -#define __thread __declspec(thread) -#endif /* __thread */ - -#ifdef _MSC_VER -#pragma warning(pop) -#pragma warning(disable : 4201) /* nonstandard extension used : \ - nameless struct / union */ -#pragma warning(disable : 4127) /* conditional expression is constant */ -#if _MSC_VER < 1900 -#pragma warning(disable : 4510) /* default constructor could \ - not be generated */ -#pragma warning(disable : 4512) /* assignment operator could \ - not be generated */ -#pragma warning(disable : 4610) /* user-defined constructor required */ -#ifndef snprintf -#define snprintf(buffer, buffer_size, format, ...) \ - _snprintf_s(buffer, buffer_size, _TRUNCATE, format, __VA_ARGS__) -#endif -#ifndef vsnprintf -#define vsnprintf(buffer, buffer_size, format, args) \ - _vsnprintf_s(buffer, buffer_size, _TRUNCATE, format, args) -#endif -#pragma warning(disable : 4996) /* 'vsnprintf': This function or variable \ - may be unsafe */ -#endif -#endif /* _MSC_VER */ diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/cases.cc b/plugins/Dbx_mdbx/src/libmdbx/test/cases.cc deleted file mode 100644 index 4f4306d58e..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/cases.cc +++ /dev/null @@ -1,97 +0,0 @@ -/* - * Copyright 2017-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#include "test.h" - -void configure_actor(unsigned &last_space_id, const actor_testcase testcase, - const char *space_id_cstr, const actor_params ¶ms) { - unsigned wait4id = 0; - - if (params.waitfor_nops) { - for (auto i = global::actors.rbegin(); i != global::actors.rend(); ++i) { - if (i->is_waitable(params.waitfor_nops)) { - if (i->signal_nops && i->signal_nops != params.waitfor_nops) - failure("Previous waitable actor (id=%u) already linked on %u-ops\n", - i->actor_id, i->signal_nops); - wait4id = i->actor_id; - i->signal_nops = params.waitfor_nops; - break; - } - } - if (!wait4id) - failure("No previous waitable actor for %u-ops\n", params.waitfor_nops); - } - - unsigned space_id = 0; - if (!space_id_cstr || strcmp(space_id_cstr, "auto") == 0) - space_id = last_space_id + 1; - else { - char *end = nullptr; - errno = 0; - space_id = strtoul(space_id_cstr, &end, 0); - if (errno) - failure_perror("Expects an integer value for space-id\n", errno); - if (end && *end) - failure("The '%s' is unexpected for space-id\n", end); - } - - if (space_id > ACTOR_ID_MAX) - failure("Invalid space-id %u\n", space_id); - last_space_id = space_id; - - log_trace("configure_actor: space %u for %s", space_id, - testcase2str(testcase)); - global::actors.emplace_back( - actor_config(testcase, params, space_id, wait4id)); - global::databases.insert(params.pathname_db); -} - -void testcase_setup(const char *casename, actor_params ¶ms, - unsigned &last_space_id) { - if (strcmp(casename, "basic") == 0) { - log_notice(">>> testcase_setup(%s)", casename); - configure_actor(last_space_id, ac_jitter, nullptr, params); - configure_actor(last_space_id, ac_hill, nullptr, params); - configure_actor(last_space_id, ac_jitter, nullptr, params); - configure_actor(last_space_id, ac_hill, nullptr, params); - configure_actor(last_space_id, ac_jitter, nullptr, params); - configure_actor(last_space_id, ac_hill, nullptr, params); - configure_actor(last_space_id, ac_try, nullptr, params); - log_notice("<<< testcase_setup(%s): done", casename); - } else { - failure("unknown testcase `%s`", casename); - } -} - -void keycase_setup(const char *casename, actor_params ¶ms) { - if (strcmp(casename, "random") == 0 || strcmp(casename, "prng") == 0) { - log_notice(">>> keycase_setup(%s)", casename); - params.keygen.keycase = kc_random; - // TODO - log_notice("<<< keycase_setup(%s): done", casename); - } else if (strcmp(casename, "dashes") == 0 || - strcmp(casename, "aside") == 0) { - log_notice(">>> keycase_setup(%s)", casename); - params.keygen.keycase = kc_dashes; - // TODO - log_notice("<<< keycase_setup(%s): done", casename); - } else if (strcmp(casename, "custom") == 0) { - log_notice("=== keycase_setup(%s): skip", casename); - params.keygen.keycase = kc_custom; - } else { - failure("unknown keycase `%s`", casename); - } -} - -/* TODO */ diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/chrono.cc b/plugins/Dbx_mdbx/src/libmdbx/test/chrono.cc deleted file mode 100644 index f734668628..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/chrono.cc +++ /dev/null @@ -1,129 +0,0 @@ -/* - * Copyright 2017-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#include "test.h" - -namespace chrono { - -#define NSEC_PER_SEC 1000000000u -uint32_t ns2fractional(uint32_t ns) { - assert(ns < NSEC_PER_SEC); - /* LY: здесь и далее используется "длинное деление", которое - * для ясности кода оставлено как есть (без ручной оптимизации). Так как - * GCC, Clang и даже MSVC сами давно умеют конвертировать деление на - * константу в быструю reciprocal-форму. */ - return ((uint64_t)ns << 32) / NSEC_PER_SEC; -} - -uint32_t fractional2ns(uint32_t fractional) { - return (fractional * (uint64_t)NSEC_PER_SEC) >> 32; -} - -#define USEC_PER_SEC 1000000u -uint32_t us2fractional(uint32_t us) { - assert(us < USEC_PER_SEC); - return ((uint64_t)us << 32) / USEC_PER_SEC; -} - -uint32_t fractional2us(uint32_t fractional) { - return (fractional * (uint64_t)USEC_PER_SEC) >> 32; -} - -#define MSEC_PER_SEC 1000u -uint32_t ms2fractional(uint32_t ms) { - assert(ms < MSEC_PER_SEC); - return ((uint64_t)ms << 32) / MSEC_PER_SEC; -} - -uint32_t fractional2ms(uint32_t fractional) { - return (fractional * (uint64_t)MSEC_PER_SEC) >> 32; -} - -time from_ns(uint64_t ns) { - time result; - result.fixedpoint = ((ns / NSEC_PER_SEC) << 32) | - ns2fractional((uint32_t)(ns % NSEC_PER_SEC)); - return result; -} - -time from_us(uint64_t us) { - time result; - result.fixedpoint = ((us / USEC_PER_SEC) << 32) | - us2fractional((uint32_t)(us % USEC_PER_SEC)); - return result; -} - -time from_ms(uint64_t ms) { - time result; - result.fixedpoint = ((ms / MSEC_PER_SEC) << 32) | - ms2fractional((uint32_t)(ms % MSEC_PER_SEC)); - return result; -} - -time now_realtime() { -#if defined(_WIN32) || defined(_WIN64) || defined(_WINDOWS) - static void(WINAPI * query_time)(LPFILETIME); - if (!query_time) { - query_time = (void(WINAPI *)(LPFILETIME))GetProcAddress( - GetModuleHandle(TEXT("kernel32.dll")), - "GetSystemTimePreciseAsFileTime"); - if (!query_time) - query_time = GetSystemTimeAsFileTime; - } - - FILETIME filetime; - query_time(&filetime); - uint64_t ns100 = - (uint64_t)filetime.dwHighDateTime << 32 | filetime.dwLowDateTime; - return from_ns((ns100 - UINT64_C(116444736000000000)) * 100u); -#else - struct timespec ts; - if (unlikely(clock_gettime(CLOCK_REALTIME, &ts))) - failure_perror("clock_gettime(CLOCK_REALTIME", errno); - - return from_timespec(ts); -#endif -} - -time now_motonic() { -#if defined(_WIN32) || defined(_WIN64) || defined(_WINDOWS) - static uint64_t reciprocal; - static LARGE_INTEGER Frequency; - if (reciprocal == 0) { - if (!QueryPerformanceFrequency(&Frequency)) - failure_perror("QueryPerformanceFrequency()", GetLastError()); - reciprocal = (((UINT64_C(1) << 48) + Frequency.QuadPart / 2 + 1) / - Frequency.QuadPart); - assert(reciprocal); - } - - LARGE_INTEGER Counter; - if (!QueryPerformanceCounter(&Counter)) - failure_perror("QueryPerformanceCounter()", GetLastError()); - - time result; - result.fixedpoint = (Counter.QuadPart / Frequency.QuadPart) << 32; - uint64_t mod = Counter.QuadPart % Frequency.QuadPart; - result.fixedpoint += (mod * reciprocal) >> 16; - return result; -#else - struct timespec ts; - if (unlikely(clock_gettime(CLOCK_MONOTONIC, &ts))) - failure_perror("clock_gettime(CLOCK_MONOTONIC)", errno); - - return from_timespec(ts); -#endif -} - -} /* namespace chrono */ diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/chrono.h b/plugins/Dbx_mdbx/src/libmdbx/test/chrono.h deleted file mode 100644 index c2bd5627a6..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/chrono.h +++ /dev/null @@ -1,100 +0,0 @@ -/* - * Copyright 2017-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#pragma once - -#include "base.h" -#include "log.h" -#include "utils.h" - -namespace chrono { - -#pragma pack(push, 1) - -typedef union time { - uint64_t fixedpoint; - struct { -#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ - uint32_t fractional; - union { - uint32_t utc; - uint32_t integer; - }; -#else - union { - uint32_t utc; - uint32_t integer; - }; - uint32_t fractional; -#endif - }; - - void reset() { fixedpoint = 0; } - uint32_t seconds() const { return utc; } -} time; - -#pragma pack(pop) - -uint32_t ns2fractional(uint32_t); -uint32_t fractional2ns(uint32_t); -uint32_t us2fractional(uint32_t); -uint32_t fractional2us(uint32_t); -uint32_t ms2fractional(uint32_t); -uint32_t fractional2ms(uint32_t); - -time from_ns(uint64_t us); -time from_us(uint64_t ns); -time from_ms(uint64_t ms); - -inline time from_seconds(uint64_t seconds) { - assert(seconds < UINT32_MAX); - time result; - result.fixedpoint = seconds << 32; - return result; -} - -inline time from_utc(time_t utc) { - assert(utc >= 0); - return from_seconds((uint64_t)utc); -} - -inline time infinite() { - time result; - result.fixedpoint = UINT64_MAX; - return result; -} - -#if defined(HAVE_TIMESPEC_TV_NSEC) || defined(__timespec_defined) || \ - defined(CLOCK_REALTIME) -inline time from_timespec(const struct timespec &ts) { - time result; - result.fixedpoint = - ((uint64_t)ts.tv_sec << 32) | ns2fractional((uint32_t)ts.tv_nsec); - return result; -} -#endif /* HAVE_TIMESPEC_TV_NSEC */ - -#if defined(HAVE_TIMEVAL_TV_USEC) || defined(_STRUCT_TIMEVAL) -inline time from_timeval(const struct timeval &tv) { - time result; - result.fixedpoint = - ((uint64_t)tv.tv_sec << 32) | us2fractional((uint32_t)tv.tv_usec); - return result; -} -#endif /* HAVE_TIMEVAL_TV_USEC */ - -time now_realtime(); -time now_motonic(); - -} /* namespace chrono */ diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/config.cc b/plugins/Dbx_mdbx/src/libmdbx/test/config.cc deleted file mode 100644 index cbff68ce4e..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/config.cc +++ /dev/null @@ -1,471 +0,0 @@ -/* - * Copyright 2017-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#include "test.h" - -#if defined(_MSC_VER) && !defined(strcasecmp) -#define strcasecmp(str, len) _stricmp(str, len) -#endif /* _MSC_VER && strcasecmp() */ - -namespace config { - -bool parse_option(int argc, char *const argv[], int &narg, const char *option, - const char **value, const char *default_value) { - assert(narg < argc); - const char *current = argv[narg]; - const size_t optlen = strlen(option); - - if (strncmp(current, "--", 2) || strncmp(current + 2, option, optlen)) - return false; - - if (!value) { - if (current[optlen + 2] == '=') - failure("Option '--%s' doen't accept any value\n", option); - return true; - } - - *value = nullptr; - if (current[optlen + 2] == '=') { - *value = ¤t[optlen + 3]; - return true; - } - - if (narg + 1 < argc && strncmp("--", argv[narg + 1], 2) != 0) { - *value = argv[narg + 1]; - ++narg; - return true; - } - - if (default_value) { - *value = default_value; - return true; - } - - failure("No value given for '--%s' option\n", option); -} - -bool parse_option(int argc, char *const argv[], int &narg, const char *option, - std::string &value, bool allow_empty) { - const char *value_cstr; - if (!parse_option(argc, argv, narg, option, &value_cstr, - allow_empty ? "" : nullptr)) - return false; - - if (!allow_empty && strlen(value_cstr) == 0) - failure("Value for option '--%s' could't be empty\n", option); - - value = value_cstr; - return true; -} - -bool parse_option(int argc, char *const argv[], int &narg, const char *option, - unsigned &mask, const option_verb *verbs) { - const char *list; - if (!parse_option(argc, argv, narg, option, &list)) - return false; - - mask = 0; - while (*list) { - if (*list == ',' || *list == ' ' || *list == '\t') { - ++list; - continue; - } - - const char *const comma = strchr(list, ','); - const size_t len = (comma) ? comma - list : strlen(list); - const option_verb *scan = verbs; - while (true) { - if (!scan->verb) - failure("Unknown verb '%.*s', for option '==%s'\n", (int)len, list, - option); - if (strlen(scan->verb) == len && strncmp(list, scan->verb, len) == 0) { - mask |= scan->mask; - list += len; - break; - } - ++scan; - } - } - - return true; -} - -bool parse_option(int argc, char *const argv[], int &narg, const char *option, - uint64_t &value, const scale_mode scale, - const uint64_t minval, const uint64_t maxval) { - - const char *value_cstr; - if (!parse_option(argc, argv, narg, option, &value_cstr)) - return false; - - char *suffix = nullptr; - errno = 0; - unsigned long raw = strtoul(value_cstr, &suffix, 0); - if (errno) - failure("Option '--%s' expects a numeric value (%s)\n", option, - test_strerror(errno)); - - uint64_t multipler = 1; - if (suffix && *suffix) { - if (scale == no_scale) - failure("Option '--%s' doen't accepts suffixes, so '%s' is unexpected\n", - option, suffix); - if (strcmp(suffix, "K") == 0 || strcasecmp(suffix, "Kilo") == 0) - multipler = (scale == decimal) ? UINT64_C(1000) : UINT64_C(1024); - else if (strcmp(suffix, "M") == 0 || strcasecmp(suffix, "Mega") == 0) - multipler = - (scale == decimal) ? UINT64_C(1000) * 1000 : UINT64_C(1024) * 1024; - else if (strcmp(suffix, "G") == 0 || strcasecmp(suffix, "Giga") == 0) - multipler = (scale == decimal) ? UINT64_C(1000) * 1000 * 1000 - : UINT64_C(1024) * 1024 * 1024; - else if (strcmp(suffix, "T") == 0 || strcasecmp(suffix, "Tera") == 0) - multipler = (scale == decimal) ? UINT64_C(1000) * 1000 * 1000 * 1000 - : UINT64_C(1024) * 1024 * 1024 * 1024; - else if (scale == duration && - (strcmp(suffix, "s") == 0 || strcasecmp(suffix, "Seconds") == 0)) - multipler = 1; - else if (scale == duration && - (strcmp(suffix, "m") == 0 || strcasecmp(suffix, "Minutes") == 0)) - multipler = 60; - else if (scale == duration && - (strcmp(suffix, "h") == 0 || strcasecmp(suffix, "Hours") == 0)) - multipler = 3600; - else if (scale == duration && - (strcmp(suffix, "d") == 0 || strcasecmp(suffix, "Days") == 0)) - multipler = 3600 * 24; - else - failure( - "Option '--%s' expects a numeric value with Kilo/Mega/Giga/Tera %s" - "suffixes, but '%s' is unexpected\n", - option, (scale == duration) ? "or Seconds/Minutes/Hours/Days " : "", - suffix); - } - - if (raw >= UINT64_MAX / multipler) - failure("The value for option '--%s' is too huge\n", option); - - value = raw * multipler; - if (maxval && value > maxval) - failure("The maximal value for option '--%s' is %" PRIu64 "\n", option, - maxval); - if (value < minval) - failure("The minimal value for option '--%s' is %" PRIu64 "\n", option, - minval); - return true; -} - -bool parse_option(int argc, char *const argv[], int &narg, const char *option, - unsigned &value, const scale_mode scale, - const unsigned minval, const unsigned maxval) { - - uint64_t huge; - if (!parse_option(argc, argv, narg, option, huge, scale, minval, maxval)) - return false; - value = (unsigned)huge; - return true; -} - -bool parse_option(int argc, char *const argv[], int &narg, const char *option, - uint8_t &value, const uint8_t minval, const uint8_t maxval) { - - uint64_t huge; - if (!parse_option(argc, argv, narg, option, huge, no_scale, minval, maxval)) - return false; - value = (uint8_t)huge; - return true; -} - -bool parse_option(int argc, char *const argv[], int &narg, const char *option, - bool &value) { - const char *value_cstr = NULL; - if (!parse_option(argc, argv, narg, option, &value_cstr, "yes")) { - const char *current = argv[narg]; - if (strncmp(current, "--no-", 5) == 0 && strcmp(current + 5, option) == 0) { - value = false; - return true; - } - if (strncmp(current, "--dont-", 7) == 0 && - strcmp(current + 7, option) == 0) { - value = false; - return true; - } - return false; - } - - if (!value_cstr) { - value = true; - return true; - } - - if (strcasecmp(value_cstr, "yes") == 0 || strcasecmp(value_cstr, "1") == 0) { - value = true; - return true; - } - - if (strcasecmp(value_cstr, "no") == 0 || strcasecmp(value_cstr, "0") == 0) { - value = false; - return true; - } - - failure( - "Option '--%s' expects a 'boolean' value Yes/No, so '%s' is unexpected\n", - option, value_cstr); -} - -//----------------------------------------------------------------------------- - -const struct option_verb mode_bits[] = { - {"rdonly", MDBX_RDONLY}, {"mapasync", MDBX_MAPASYNC}, - {"utterly", MDBX_UTTERLY_NOSYNC}, {"nosubdir", MDBX_NOSUBDIR}, - {"nosync", MDBX_NOSYNC}, {"nometasync", MDBX_NOMETASYNC}, - {"writemap", MDBX_WRITEMAP}, {"notls", MDBX_NOTLS}, - {"nordahead", MDBX_NORDAHEAD}, {"nomeminit", MDBX_NOMEMINIT}, - {"coalesce", MDBX_COALESCE}, {"lifo", MDBX_LIFORECLAIM}, - {"perturb", MDBX_PAGEPERTURB}, {nullptr, 0}}; - -const struct option_verb table_bits[] = { - {"key.reverse", MDBX_REVERSEKEY}, - {"key.integer", MDBX_INTEGERKEY}, - {"data.integer", MDBX_INTEGERDUP | MDBX_DUPFIXED | MDBX_DUPSORT}, - {"data.fixed", MDBX_DUPFIXED | MDBX_DUPSORT}, - {"data.reverse", MDBX_REVERSEDUP | MDBX_DUPSORT}, - {"data.dups", MDBX_DUPSORT}, - {nullptr, 0}}; - -static void dump_verbs(const char *caption, size_t bits, - const struct option_verb *verbs) { - log_info("%s: 0x%" PRIx64 " = ", caption, (uint64_t)bits); - - const char *comma = ""; - while (verbs->mask && bits) { - if ((bits & verbs->mask) == verbs->mask) { - logging::feed("%s%s", comma, verbs->verb); - bits -= verbs->mask; - comma = ", "; - } - ++verbs; - } - - logging::feed("\n"); -} - -static void dump_duration(const char *caption, unsigned duration) { - log_info("%s: ", caption); - if (duration) { - if (duration > 24 * 3600) - logging::feed("%u_", duration / (24 * 3600)); - if (duration > 3600) - logging::feed("%02u:", (duration % (24 * 3600)) / 3600); - logging::feed("%02u:%02u", (duration % 3600) / 60, duration % 60); - } else { - logging::feed("INFINITE"); - } - logging::feed("\n"); -} - -void dump(const char *title) { - logging::local_suffix indent(title); - - for (auto i = global::actors.begin(); i != global::actors.end(); ++i) { - log_info("#%u, testcase %s, space_id/table %u\n", i->actor_id, - testcase2str(i->testcase), i->space_id); - indent.push(); - - if (i->params.loglevel) { - log_info("log: level %u, %s\n", i->params.loglevel, - i->params.pathname_log.empty() ? "console" - : i->params.pathname_log.c_str()); - } - - log_info("database: %s, size %" PRIu64 "\n", i->params.pathname_db.c_str(), - i->params.size); - - dump_verbs("mode", i->params.mode_flags, mode_bits); - dump_verbs("table", i->params.table_flags, table_bits); - - if (i->params.test_nops) - log_info("iterations/records %u\n", i->params.test_nops); - else - dump_duration("duration", i->params.test_duration); - - if (i->params.nrepeat) - log_info("repeat %u\n", i->params.nrepeat); - else - log_info("repeat ETERNALLY\n"); - - log_info("threads %u\n", i->params.nthreads); - - log_info("keygen.case: %s\n", keygencase2str(i->params.keygen.keycase)); - log_info("keygen.seed: %u\n", i->params.keygen.seed); - log_info("key: minlen %u, maxlen %u\n", i->params.keylen_min, - i->params.keylen_max); - log_info("data: minlen %u, maxlen %u\n", i->params.datalen_min, - i->params.datalen_max); - - log_info("batch: read %u, write %u\n", i->params.batch_read, - i->params.batch_write); - - if (i->params.waitfor_nops) - log_info("wait: actor %u for %u ops\n", i->wait4id, - i->params.waitfor_nops); - else if (i->params.delaystart) - dump_duration("delay", i->params.delaystart); - else - log_info("no-delay\n"); - - if (i->params.inject_writefaultn) - log_info("inject-writefault on %u ops\n", i->params.inject_writefaultn); - else - log_info("no-inject-writefault\n"); - - log_info("limits: readers %u, tables %u\n", i->params.max_readers, - i->params.max_tables); - - log_info("drop table: %s\n", i->params.drop_table ? "Yes" : "No"); - indent.pop(); - } - - dump_duration("timeout", global::config::timeout_duration_seconds); - log_info("cleanup: before %s, after %s\n", - global::config::cleanup_before ? "Yes" : "No", - global::config::cleanup_after ? "Yes" : "No"); - - log_info("failfast: %s\n", global::config::failfast ? "Yes" : "No"); - log_info("progress indicator: %s\n", - global::config::progress_indicator ? "Yes" : "No"); -} - -} /* namespace config */ - -//----------------------------------------------------------------------------- - -using namespace config; - -actor_config::actor_config(actor_testcase testcase, const actor_params ¶ms, - unsigned space_id, unsigned wait4id) - : params(params) { - this->space_id = space_id; - this->actor_id = 1 + (unsigned)global::actors.size(); - this->testcase = testcase; - this->wait4id = wait4id; - signal_nops = 0; -} - -const std::string actor_config::serialize(const char *prefix) const { - simple_checksum checksum; - - std::string result; - if (prefix) - result.append(prefix); - - checksum.push(params.pathname_db); - result.append(params.pathname_db); - result.append("|"); - - checksum.push(params.pathname_log); - result.append(params.pathname_log); - result.append("|"); - - static_assert(std::is_pod<actor_params_pod>::value, - "actor_params_pod should by POD"); - result.append(data2hex(static_cast<const actor_params_pod *>(¶ms), - sizeof(actor_params_pod), checksum)); - result.append("|"); - - static_assert(std::is_pod<actor_config_pod>::value, - "actor_config_pod should by POD"); - result.append(data2hex(static_cast<const actor_config_pod *>(this), - sizeof(actor_config_pod), checksum)); - result.append("|"); - - result.append(osal_serialize(checksum)); - result.append("|"); - - result.append(std::to_string(checksum.value)); - return result; -} - -bool actor_config::deserialize(const char *str, actor_config &config) { - simple_checksum checksum; - - TRACE(">> actor_config::deserialize: %s\n", str); - - const char *slash = strchr(str, '|'); - if (!slash) { - TRACE("<< actor_config::deserialize: slash-1\n"); - return false; - } - config.params.pathname_db.assign(str, slash - str); - checksum.push(config.params.pathname_db); - str = slash + 1; - - slash = strchr(str, '|'); - if (!slash) { - TRACE("<< actor_config::deserialize: slash-2\n"); - return false; - } - config.params.pathname_log.assign(str, slash - str); - checksum.push(config.params.pathname_log); - str = slash + 1; - - slash = strchr(str, '|'); - if (!slash) { - TRACE("<< actor_config::deserialize: slash-3\n"); - return false; - } - static_assert(std::is_pod<actor_params_pod>::value, - "actor_params_pod should by POD"); - if (!hex2data(str, slash, static_cast<actor_params_pod *>(&config.params), - sizeof(actor_params_pod), checksum)) { - TRACE("<< actor_config::deserialize: actor_params_pod(%.*s)\n", - (int)(slash - str), str); - return false; - } - str = slash + 1; - - slash = strchr(str, '|'); - if (!slash) { - TRACE("<< actor_config::deserialize: slash-4\n"); - return false; - } - static_assert(std::is_pod<actor_config_pod>::value, - "actor_config_pod should by POD"); - if (!hex2data(str, slash, static_cast<actor_config_pod *>(&config), - sizeof(actor_config_pod), checksum)) { - TRACE("<< actor_config::deserialize: actor_config_pod(%.*s)\n", - (int)(slash - str), str); - return false; - } - str = slash + 1; - - slash = strchr(str, '|'); - if (!slash) { - TRACE("<< actor_config::deserialize: slash-5\n"); - return false; - } - if (!config.osal_deserialize(str, slash, checksum)) { - TRACE("<< actor_config::deserialize: osal\n"); - return false; - } - str = slash + 1; - - uint64_t verify = std::stoull(std::string(str)); - if (checksum.value != verify) { - TRACE("<< actor_config::deserialize: checksum mismatch\n"); - return false; - } - - TRACE("<< actor_config::deserialize: OK\n"); - return true; -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/config.h b/plugins/Dbx_mdbx/src/libmdbx/test/config.h deleted file mode 100644 index 86f37fbed8..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/config.h +++ /dev/null @@ -1,280 +0,0 @@ -/* - * Copyright 2017-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#pragma once - -#include "base.h" -#include "log.h" -#include "utils.h" - -#define ACTOR_ID_MAX INT16_MAX - -enum actor_testcase { - ac_none, - ac_hill, - ac_deadread, - ac_deadwrite, - ac_jitter, - ac_try -}; - -enum actor_status { - as_unknown, - as_debuging, - as_running, - as_successful, - as_killed, - as_failed -}; - -const char *testcase2str(const actor_testcase); -const char *status2str(actor_status status); - -enum keygen_case { - kc_random, /* [ 6.. 2.. 7.. 4.. 0.. 1.. 5.. 3.. ] */ - kc_dashes, /* [ 0123.. 4567.. ] */ - kc_custom, - /* TODO: more cases */ -}; - -const char *keygencase2str(const keygen_case); - -//----------------------------------------------------------------------------- - -namespace config { - -enum scale_mode { no_scale, decimal, binary, duration }; - -bool parse_option(int argc, char *const argv[], int &narg, const char *option, - const char **value, const char *default_value = nullptr); - -bool parse_option(int argc, char *const argv[], int &narg, const char *option, - std::string &value, bool allow_empty = false); - -bool parse_option(int argc, char *const argv[], int &narg, const char *option, - bool &value); - -struct option_verb { - const char *const verb; - unsigned mask; -}; - -bool parse_option(int argc, char *const argv[], int &narg, const char *option, - unsigned &mask, const option_verb *verbs); - -bool parse_option(int argc, char *const argv[], int &narg, const char *option, - uint64_t &value, const scale_mode scale, - const uint64_t minval = 0, const uint64_t maxval = INT64_MAX); - -bool parse_option(int argc, char *const argv[], int &narg, const char *option, - unsigned &value, const scale_mode scale, - const unsigned minval = 0, const unsigned maxval = INT32_MAX); - -bool parse_option(int argc, char *const argv[], int &narg, const char *option, - uint8_t &value, const uint8_t minval = 0, - const uint8_t maxval = 255); - -//----------------------------------------------------------------------------- - -#pragma pack(push, 1) - -struct keygen_params_pod { - keygen_case keycase; - - /* Параметры генератора пар key-value. - * - * Ключи и значения генерируются по задаваемым параметрам на основе "плоской" - * исходной координаты. При этом, в общем случае, в процессе тестов исходная - * координата последовательно итерируется в заданном диапазоне, а необходимые - * паттерны/последовательности/узоры получаются за счет преобразования - * исходной координаты, согласно описанным ниже параметрам. - * - * Стоит отметить, что порядок описания параметров для удобства совпадает с - * порядком их использования, т.е. с порядком соответствующих преобразований. - * - * Второе важное замечание касается ограничений одновременной координированной - * генерации паттеров как для ключей, так и для значений. Суть в том, что - * такая возможность не нужна по следующим причинам: - * - libmdbx поддерживает два существенно различающихся вида таблиц, - * "уникальные" (без дубликатов и без multi-value), и так называемые - * "с дубликатами" (c multi-value). - * - Для таблиц "без дубликатов" только размер связанных к ключами значений - * (данных) оказывает влияния на работу движка, непосредственно содержимое - * данных не анализируется движком и не оказывает влияния на его работу. - * - Для таблиц "с дубликатами", при наличии более одного значения для - * некоторого ключа, формируется дочернее btree-поддерево. Это дерево - * формируется в отдельном "кусте" страниц и обслуживается независимо - * от окружения родительского ключа. - * - Таким образом, паттерн генерации значений имеет смысл только для - * таблиц "с дубликатами" и только в контексте одного значения ключа. - * Иначе говоря, нет смысла в со-координации генерации паттернов для - * ключей и значений. Более того, генерацию значений всегда необходимо - * рассматривать в контексте связки с одним значением ключа. - * - * width: - * Большинство тестов предполагают создание или итерирование некоторого - * количества записей. При этом требуется итерирование или генерация - * значений и ключей из некоторого ограниченного пространства вариантов. - * - * Параметр width задает такую ширину пространства вариантов в битах. - * Таким образом мощность пространства вариантов (пока) всегда равна - * степени двойки. Это ограничение можно снять, но ценой увеличения - * вычислительной сложности, включая потерю простоты и прозрачности. - * - * С другой стороны, не-битовый width может быть полезен: - * - Позволит генерировать ключи/значения в точно задаваемом диапазоне. - * Например, перебрать в псевдо-случайном порядке 10001 значение. - * - Позволит поровну разделять заданное пространство (диапазон) - * ключей/значений между количеством потоков некратным степени двойки. - * - * mesh и seed: - * Позволяют получить псевдо-случайные последовательности ключей/значений. - * Параметр mesh задает сколько младших бит исходной плоской координаты - * будет "перемешано" (инъективно отображено), а параметр seed позволяет - * выбрать конкретный вариант "перемешивания". - * - * Перемешивание выполняется при ненулевом значении mesh. Перемешивание - * реализуется посредством применения двух инъективных функций для - * заданного количества бит: - * - применяется первая инъективная функция; - * - к результату добавляется salt полученный из seed; - * - применяется вторая инъективная функция; - * - * Следует отметить, что mesh умышленно позволяет перемешать только младшую - * часть, что при ненулевом значении split (см далее) не позволяет получать - * псевдо-случайные значений ключей без псевдо-случайности в значениях. - * - * Такое ограничение соответствуют внутренней алгоритмике libmdbx. Проще - * говоря мы можем проверить движок псевдо-случайной последовательностью - * ключей на таблицах без дубликатов (без multi-value), а затем проверить - * корректность работу псевдо-случайной последовательностью значений на - * таблицах с дубликатами (с multi-value), опционально добавляя - * псевдо-случайности к последовательности ключей. Однако, нет смысла - * генерировать псевдо-случайные ключи, одновременно с формированием - * какого-либо паттерна в значениях, так как содержимое в данных либо - * не будет иметь значения (для таблиц без дубликатов), либо будет - * обрабатываться в отдельных btree-поддеревьях. - * - * rotate и offset: - * Для проверки слияния и разделения страниц внутри движка требуются - * генерация ключей/значений в виде не-смежных последовательностей, как-бы - * в виде "пунктира", который постепенно заполняет весь заданных диапазон. - * - * Параметры позволяют генерировать такой "пунктир". Соответственно rotate - * задает циклический сдвиг вправо, а offset задает смещение, точнее говоря - * сложение по модулю внутри диапазона заданного посредством width. - * - * Например, при rotate равном 1 (циклический сдвиг вправо на 1 бит), - * четные и нечетные исходные значения сложатся в две линейные - * последовательности, которые постепенно закроют старшую и младшую - * половины диапазона. - * - * split: - * Для таблиц без дубликатов (без multi-value ключей) фактически требуется - * генерация только ключей, а данные могут быть постоянным. Но для таблиц с - * дубликатами (с multi-value ключами) также требуется генерация значений. - * - * Ненулевое значение параметра split фактически включает генерацию значений, - * при этом значение split определяет сколько бит исходного абстрактного - * номера будет отрезано для генерации значения. - */ - - uint8_t width; - uint8_t mesh; - uint8_t rotate; - uint8_t split; - uint32_t seed; - uint64_t offset; -}; - -struct actor_params_pod { - unsigned loglevel; - - unsigned mode_flags; - unsigned table_flags; - uint64_t size; - - unsigned test_duration; - unsigned test_nops; - unsigned nrepeat; - unsigned nthreads; - - unsigned keylen_min, keylen_max; - unsigned datalen_min, datalen_max; - - unsigned batch_read; - unsigned batch_write; - - unsigned delaystart; - unsigned waitfor_nops; - unsigned inject_writefaultn; - - unsigned max_readers; - unsigned max_tables; - keygen_params_pod keygen; - - bool drop_table; -}; - -struct actor_config_pod { - unsigned actor_id, space_id; - actor_testcase testcase; - unsigned wait4id; - unsigned signal_nops; -}; - -#pragma pack(pop) - -extern const struct option_verb mode_bits[]; -extern const struct option_verb table_bits[]; -void dump(const char *title = "config-dump: "); - -} /* namespace config */ - -struct actor_params : public config::actor_params_pod { - std::string pathname_log; - std::string pathname_db; - void set_defaults(const std::string &tmpdir); -}; - -struct actor_config : public config::actor_config_pod { - actor_params params; - - bool wanna_event4signalling() const { return true /* TODO ? */; } - - actor_config(actor_testcase testcase, const actor_params ¶ms, - unsigned space_id, unsigned wait4id); - - actor_config(const char *str) { - if (!deserialize(str, *this)) - failure("Invalid internal parameter '%s'\n", str); - } - - const std::string osal_serialize(simple_checksum &) const; - bool osal_deserialize(const char *str, const char *end, simple_checksum &); - - const std::string serialize(const char *prefix) const; - static bool deserialize(const char *str, actor_config &config); - - bool is_waitable(size_t nops) const { - switch (testcase) { - case ac_hill: - if (!params.test_nops || params.test_nops >= nops) - return true; - __fallthrough; - default: - return false; - } - } -}; diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/dead.cc b/plugins/Dbx_mdbx/src/libmdbx/test/dead.cc deleted file mode 100644 index ee13fbd0ae..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/dead.cc +++ /dev/null @@ -1,63 +0,0 @@ -/* - * Copyright 2017-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#include "test.h" - -bool testcase_deadread::setup() { - log_trace(">> setup"); - if (!inherited::setup()) - return false; - - log_trace("<< setup"); - return true; -} - -bool testcase_deadread::run() { - db_open(); - txn_begin(true); - return true; -} - -bool testcase_deadread::teardown() { - log_trace(">> teardown"); - cursor_guard.release(); - txn_guard.release(); - db_guard.release(); - return inherited::teardown(); -} - -//----------------------------------------------------------------------------- - -bool testcase_deadwrite::setup() { - log_trace(">> setup"); - if (!inherited::setup()) - return false; - - log_trace("<< setup"); - return true; -} - -bool testcase_deadwrite::run() { - db_open(); - txn_begin(false); - return true; -} - -bool testcase_deadwrite::teardown() { - log_trace(">> teardown"); - cursor_guard.release(); - txn_guard.release(); - db_guard.release(); - return inherited::teardown(); -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/hill.cc b/plugins/Dbx_mdbx/src/libmdbx/test/hill.cc deleted file mode 100644 index c9115784d4..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/hill.cc +++ /dev/null @@ -1,227 +0,0 @@ -/* - * Copyright 2017-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#include "test.h" - -bool testcase_hill::setup() { - log_trace(">> setup"); - if (!inherited::setup()) - return false; - - /* TODO */ - - log_trace("<< setup"); - return true; -} - -bool testcase_hill::run() { - db_open(); - - txn_begin(false); - MDBX_dbi dbi = db_table_open(true); - txn_end(false); - - /* LY: тест "холмиком": - * - сначала наполняем таблицу циклическими CRUD-манипуляциями, - * которые в каждом цикле делают несколько операций, включая удаление, - * но в результате добавляют записи. - * - затем очищаем таблицу также CRUD-манипуляциями, но уже с другой - * пропорцией удалений. - * - * При этом очень многое зависит от порядка перебора ключей: - * - (псевдо)случайное распределение требуется лишь для полноты картины, - * но в целом не покрывает важных кейсов. - * - кроме (псевдо)случайного перебора требуется последовательное - * итерирование ключей интервалами различной ширины, с тем чтобы - * проверить различные варианты как разделения, так и слияния страниц - * внутри движка. - * - при не-уникальных ключах (MDBX_DUPSORT с подвариантами), для каждого - * повтора внутри движка формируется вложенное btree-дерево, - * соответственно требуется соблюдение аналогичных принципов - * итерирования для значений. - */ - - /* TODO: работа в несколько потоков */ - keyvalue_maker.setup(config.params, 0 /* thread_number */); - - keygen::buffer a_key = keygen::alloc(config.params.keylen_max); - keygen::buffer a_data_0 = keygen::alloc(config.params.datalen_max); - keygen::buffer a_data_1 = keygen::alloc(config.params.datalen_max); - keygen::buffer b_key = keygen::alloc(config.params.keylen_max); - keygen::buffer b_data = keygen::alloc(config.params.datalen_max); - - const unsigned insert_flags = (config.params.table_flags & MDBX_DUPSORT) - ? MDBX_NODUPDATA - : MDBX_NODUPDATA | MDBX_NOOVERWRITE; - const unsigned update_flags = - MDBX_CURRENT | MDBX_NODUPDATA | MDBX_NOOVERWRITE; - - uint64_t serial_count = 0; - unsigned txn_nops = 0; - if (!txn_guard) - txn_begin(false); - - while (should_continue()) { - const keygen::serial_t a_serial = serial_count; - if (unlikely(!keyvalue_maker.increment(serial_count, 1))) - failure("uphill: unexpected key-space overflow"); - - const keygen::serial_t b_serial = serial_count; - assert(b_serial > a_serial); - - // создаем первую запись из пары - const keygen::serial_t age_shift = UINT64_C(1) << (a_serial % 31); - log_trace("uphill: insert-a (age %" PRIu64 ") %" PRIu64, age_shift, - a_serial); - generate_pair(a_serial, a_key, a_data_1, age_shift); - int rc = mdbx_put(txn_guard.get(), dbi, &a_key->value, &a_data_1->value, - insert_flags); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_put(insert-a.1)", rc); - - if (++txn_nops >= config.params.batch_write) { - txn_restart(false, false); - txn_nops = 0; - } - - // создаем вторую запись из пары - log_trace("uphill: insert-b %" PRIu64, b_serial); - generate_pair(b_serial, b_key, b_data, 0); - rc = mdbx_put(txn_guard.get(), dbi, &b_key->value, &b_data->value, - insert_flags); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_put(insert-b)", rc); - - if (++txn_nops >= config.params.batch_write) { - txn_restart(false, false); - txn_nops = 0; - } - - // обновляем данные в первой записи - log_trace("uphill: update-a (age %" PRIu64 "->0) %" PRIu64, age_shift, - a_serial); - generate_pair(a_serial, a_key, a_data_0, 0); - rc = mdbx_replace(txn_guard.get(), dbi, &a_key->value, &a_data_0->value, - &a_data_1->value, update_flags); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_put(update-a: 1->0)", rc); - - if (++txn_nops >= config.params.batch_write) { - txn_restart(false, false); - txn_nops = 0; - } - - // удаляем вторую запись - log_trace("uphill: delete-b %" PRIu64, b_serial); - rc = mdbx_del(txn_guard.get(), dbi, &b_key->value, &b_data->value); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_del(b)", rc); - - if (++txn_nops >= config.params.batch_write) { - txn_restart(false, false); - txn_nops = 0; - } - - report(1); - if (!keyvalue_maker.increment(serial_count, 1)) { - // дошли до границы пространства ключей - serial_count = a_serial; - goto overflow; - } - } - - while (serial_count > 0) { - if (unlikely(!keyvalue_maker.increment(serial_count, -2))) - failure("downhill: unexpected key-space underflow"); - - overflow: - const keygen::serial_t a_serial = serial_count; - const keygen::serial_t b_serial = a_serial + 1; - assert(b_serial > a_serial); - - // обновляем первую запись из пары - const keygen::serial_t age_shift = UINT64_C(1) << (a_serial % 31); - log_trace("downhill: update-a (age 0->%" PRIu64 ") %" PRIu64, age_shift, - a_serial); - generate_pair(a_serial, a_key, a_data_0, 0); - generate_pair(a_serial, a_key, a_data_1, age_shift); - if (a_serial == 808) - log_trace("!!!"); - int rc = mdbx_replace(txn_guard.get(), dbi, &a_key->value, &a_data_1->value, - &a_data_0->value, update_flags); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_put(update-a: 0->1)", rc); - - if (++txn_nops >= config.params.batch_write) { - txn_restart(false, false); - txn_nops = 0; - } - - // создаем вторую запись из пары - log_trace("downhill: insert-b %" PRIu64, b_serial); - generate_pair(b_serial, b_key, b_data, 0); - rc = mdbx_put(txn_guard.get(), dbi, &b_key->value, &b_data->value, - insert_flags); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_put(insert-b)", rc); - - if (++txn_nops >= config.params.batch_write) { - txn_restart(false, false); - txn_nops = 0; - } - - // удаляем первую запись - log_trace("downhill: delete-a (age %" PRIu64 ") %" PRIu64, age_shift, - a_serial); - rc = mdbx_del(txn_guard.get(), dbi, &a_key->value, &a_data_1->value); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_del(a)", rc); - - if (++txn_nops >= config.params.batch_write) { - txn_restart(false, false); - txn_nops = 0; - } - - // удаляем вторую запись - log_trace("downhill: delete-b %" PRIu64, b_serial); - rc = mdbx_del(txn_guard.get(), dbi, &b_key->value, &b_data->value); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_del(b)", rc); - - if (++txn_nops >= config.params.batch_write) { - txn_restart(false, false); - txn_nops = 0; - } - - report(1); - } - - if (txn_guard) - txn_end(false); - - if (dbi) { - if (config.params.drop_table && !mode_readonly()) { - txn_begin(false); - db_table_drop(dbi); - txn_end(false); - } else - db_table_close(dbi); - } - return true; -} - -bool testcase_hill::teardown() { - log_trace(">> teardown"); - return inherited::teardown(); -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/jitter.cc b/plugins/Dbx_mdbx/src/libmdbx/test/jitter.cc deleted file mode 100644 index e7faf2a3f9..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/jitter.cc +++ /dev/null @@ -1,69 +0,0 @@ -/* - * Copyright 2017-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#include "test.h" - -bool testcase_jitter::setup() { - log_trace(">> setup"); - if (!inherited::setup()) - return false; - - log_trace("<< setup"); - return true; -} - -bool testcase_jitter::run() { - while (should_continue()) { - jitter_delay(); - db_open(); - - if (flipcoin()) { - jitter_delay(); - txn_begin(true); - fetch_canary(); - jitter_delay(); - txn_end(flipcoin()); - } - - jitter_delay(); - txn_begin(mode_readonly()); - jitter_delay(); - if (!mode_readonly()) { - fetch_canary(); - update_canary(1); - /* TODO: - * - db_setsize() - * ... - */ - } - txn_end(flipcoin()); - - if (flipcoin()) { - jitter_delay(); - txn_begin(true); - jitter_delay(); - txn_end(flipcoin()); - } - - jitter_delay(); - db_close(); - report(1); - } - return true; -} - -bool testcase_jitter::teardown() { - log_trace(">> teardown"); - return inherited::teardown(); -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/keygen.cc b/plugins/Dbx_mdbx/src/libmdbx/test/keygen.cc deleted file mode 100644 index 99b46f2976..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/keygen.cc +++ /dev/null @@ -1,238 +0,0 @@ -/* - * Copyright 2017-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#include "test.h" - -namespace keygen { - -static inline __pure_function serial_t mask(unsigned bits) { - assert(bits > 0 && bits <= serial_maxwith); - return serial_allones >> (serial_maxwith - bits); -} - -/* LY: https://en.wikipedia.org/wiki/Injective_function */ -serial_t injective(const serial_t serial, - const unsigned bits /* at least serial_minwith (8) */, - const serial_t salt) { - assert(bits > serial_minwith && bits <= serial_maxwith); - - /* LY: All these "magic" prime numbers were found - * and verified with a bit of brute force. */ - - static const uint64_t m[64 - serial_minwith] = { - /* 8 - 24 */ - 113, 157, 397, 653, 1753, 5641, 9697, 23873, 25693, 80833, 105953, 316937, - 309277, 834497, 1499933, 4373441, 10184137, - /* 25 - 64 */ - 10184137, 17279209, 33990377, 67295161, 284404553, 1075238767, 6346721573, - 6924051577, 19204053433, 45840188887, 53625693977, 73447827913, - 141638870249, 745683604649, 1283334050489, 1100828289853, 2201656586197, - 5871903036137, 11238507001417, 45264020802263, 105008404482889, - 81921776907059, 199987980256399, 307207457507641, 946769023178273, - 2420886491930041, 3601632139991929, 11984491914483833, 21805846439714153, - 23171543400565993, 53353226456762893, 155627817337932409, - 227827205384840249, 816509268558278821, 576933057762605689, - 2623957345935638441, 5048241705479929949, 4634245581946485653}; - static const uint8_t s[64 - serial_minwith] = { - /* 8 - 24 */ - 2, 3, 4, 4, 2, 4, 3, 3, 7, 3, 3, 4, 8, 3, 10, 3, 11, - /* 25 - 64 */ - 11, 9, 9, 9, 11, 10, 5, 14, 11, 16, 14, 12, 13, 16, 19, 10, 10, 21, 7, 20, - 10, 14, 22, 19, 3, 21, 18, 19, 26, 24, 2, 21, 25, 29, 24, 10, 11, 14}; - - serial_t result = serial * m[bits - 8]; - if (salt) { - const unsigned left = bits / 2; - const unsigned right = bits - left; - result = (result << left) | ((result & mask(bits)) >> right); - result = (result ^ salt) * m[bits - 8]; - } - - result ^= result << s[bits - 8]; - result &= mask(bits); - log_trace("keygen-injective: serial %" PRIu64 " into %" PRIu64, serial, - result); - return result; -} - -void __hot maker::pair(serial_t serial, const buffer &key, buffer &value, - serial_t value_age) { - assert(mapping.width >= serial_minwith && mapping.width <= serial_maxwith); - assert(mapping.split <= mapping.width); - assert(mapping.mesh <= mapping.width); - assert(mapping.rotate <= mapping.width); - assert(mapping.offset <= mask(mapping.width)); - assert(!(key_essentials.flags & (MDBX_INTEGERDUP | MDBX_REVERSEDUP))); - assert(!(value_essentials.flags & (MDBX_INTEGERKEY | MDBX_REVERSEKEY))); - - log_trace("keygen-pair: serial %" PRIu64 ", data-age %" PRIu64, serial, - value_age); - - if (mapping.mesh >= serial_minwith) { - serial = - (serial & ~mask(mapping.mesh)) | injective(serial, mapping.mesh, salt); - log_trace("keygen-pair: mesh %" PRIu64, serial); - } - - if (mapping.rotate) { - const unsigned right = mapping.rotate; - const unsigned left = mapping.width - right; - serial = (serial << left) | ((serial & mask(mapping.width)) >> right); - log_trace("keygen-pair: rotate %" PRIu64 ", 0x%" PRIx64, serial, serial); - } - - serial = (serial + mapping.offset) & mask(mapping.width); - log_trace("keygen-pair: offset %" PRIu64, serial); - serial += base; - - serial_t key_serial = serial; - serial_t value_serial = value_age; - if (mapping.split) { - key_serial = serial >> mapping.split; - value_serial = - (serial & mask(mapping.split)) | (value_age << mapping.split); - } - - log_trace("keygen-pair: key %" PRIu64 ", value %" PRIu64, key_serial, - value_serial); - - mk(key_serial, key_essentials, *key); - mk(value_serial, value_essentials, *value); - - if (log_enabled(logging::trace)) { - char dump_key[128], dump_value[128]; - log_trace("keygen-pair: key %s, value %s", - mdbx_dkey(&key->value, dump_key, sizeof(dump_key)), - mdbx_dkey(&value->value, dump_value, sizeof(dump_value))); - } -} - -void maker::setup(const config::actor_params_pod &actor, - unsigned thread_number) { - key_essentials.flags = - actor.table_flags & (MDBX_INTEGERKEY | MDBX_REVERSEKEY); - assert(actor.keylen_min < UINT8_MAX); - key_essentials.minlen = (uint8_t)actor.keylen_min; - assert(actor.keylen_max < UINT16_MAX); - key_essentials.maxlen = (uint16_t)actor.keylen_max; - - value_essentials.flags = - actor.table_flags & (MDBX_INTEGERDUP | MDBX_REVERSEDUP); - assert(actor.datalen_min < UINT8_MAX); - value_essentials.minlen = (uint8_t)actor.datalen_min; - assert(actor.datalen_max < UINT16_MAX); - value_essentials.maxlen = (uint16_t)actor.datalen_max; - - assert(thread_number < 2); - (void)thread_number; - mapping = actor.keygen; - salt = actor.keygen.seed * UINT64_C(14653293970879851569); - - // FIXME: TODO - base = 0; -} - -bool maker::increment(serial_t &serial, int delta) { - if (serial > mask(mapping.width)) { - log_extra("keygen-increment: %" PRIu64 " > %" PRIu64 ", overflow", serial, - mask(mapping.width)); - return false; - } - - serial_t target = serial + (int64_t)delta; - if (target > mask(mapping.width)) { - log_extra("keygen-increment: %" PRIu64 "%-d => %" PRIu64 ", overflow", - serial, delta, target); - return false; - } - - log_extra("keygen-increment: %" PRIu64 "%-d => %" PRIu64 ", continue", serial, - delta, target); - serial = target; - return true; -} - -//----------------------------------------------------------------------------- - -size_t length(serial_t serial) { - size_t n = 0; - if (serial > UINT32_MAX) { - n = 4; - serial >>= 32; - } - if (serial > UINT16_MAX) { - n += 2; - serial >>= 16; - } - if (serial > UINT8_MAX) { - n += 1; - serial >>= 8; - } - return (serial > 0) ? n + 1 : n; -} - -buffer alloc(size_t limit) { - result *ptr = (result *)malloc(sizeof(result) + limit); - if (unlikely(ptr == nullptr)) - failure_perror("malloc(keyvalue_buffer)", errno); - ptr->value.iov_base = ptr->bytes; - ptr->value.iov_len = 0; - ptr->limit = limit; - return buffer(ptr); -} - -void __hot maker::mk(const serial_t serial, const essentials ¶ms, - result &out) { - assert(out.limit >= params.maxlen); - assert(params.maxlen >= params.minlen); - assert(params.maxlen >= length(serial)); - - out.value.iov_base = out.bytes; - out.value.iov_len = params.minlen; - - if (params.flags & (MDBX_INTEGERKEY | MDBX_INTEGERDUP)) { - assert(params.maxlen == params.minlen); - assert(params.minlen == 4 || params.minlen == 8); - if (is_byteorder_le() || params.minlen == 8) - out.u64 = serial; - else - out.u32 = (uint32_t)serial; - } else if (params.flags & (MDBX_REVERSEKEY | MDBX_REVERSEDUP)) { - if (out.value.iov_len > 8) { - memset(out.bytes, '\0', out.value.iov_len - 8); - unaligned::store(out.bytes + out.value.iov_len - 8, htobe64(serial)); - } else { - out.u64 = htobe64(serial); - if (out.value.iov_len < 8) { - out.value.iov_len = std::max(length(serial), out.value.iov_len); - out.value.iov_base = out.bytes + 8 - out.value.iov_len; - } - } - } else { - out.u64 = htole64(serial); - if (out.value.iov_len > 8) - memset(out.bytes + 8, '\0', out.value.iov_len - 8); - else - out.value.iov_len = std::max(length(serial), out.value.iov_len); - } - - assert(out.value.iov_len >= params.minlen); - assert(out.value.iov_len <= params.maxlen); - assert(out.value.iov_len >= length(serial)); - assert(out.value.iov_base >= out.bytes); - assert((uint8_t *)out.value.iov_base + out.value.iov_len <= - out.bytes + out.limit); -} - -} /* namespace keygen */ diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/keygen.h b/plugins/Dbx_mdbx/src/libmdbx/test/keygen.h deleted file mode 100644 index c1e907bc0b..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/keygen.h +++ /dev/null @@ -1,125 +0,0 @@ -/* - * Copyright 2017-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#pragma once - -#include "base.h" -#include "config.h" -#include "log.h" -#include "utils.h" - -namespace keygen { - -/* Под "генерацией ключей" здесь понимается генерация обоих значений для - * пар key-value, т.е. не только ключей, но и ассоциированных с ними данных. - */ - -/* Генерацию ключей нельзя отнести к простым задачам, так как требования - * примерно следующие: - * - генерация разного количества уникальных ключей различной длины - * в задаваемом диапазоне; - * - возможность выбора как псевдо-случайного порядка ключей, - * так и по некоторым специфическим законам (ограниченными упорядоченными - * последовательностями, в шахматном порядке по граница диапазона и т.д.); - * - возможность генерации дубликатов с задаваемым законом распределения; - * - возможность генерации непересекающимися кластерами для параллельного - * использования в нескольких потоках; - * - использовать минимум ресурсов, как CPU, так и RAM, в том числе - * включая cache pollution и ram bandwidth. - * - * При этом заведомо известно, что для MDBX не имеет значения: - * - используемый алфавит (значения байтов); - * - частотное распределение по алфавиту; - * - абсолютное значение ключей или разность между отдельными значениями; - * - * Соответственно, в общих чертах, схема генерации следующая: - * - вводится плоская одномерная "координата" uint64_t; - * - генерация специфических паттернов (последовательностей) - * реализуется посредством соответствующих преобразований "координат", при - * этом все подобные преобразования выполняются только над "координатой"; - * - итоговая "координата" преобразуется в 8-байтное суррогатное значение - * ключа; - * - для получения ключей длиной МЕНЕЕ 8 байт суррогат может усекаться - * до ненулевых байт, в том числе до нулевой длины; - * - для получения ключей длиной БОЛЕЕ 8 байт суррогат дополняется - * нулями или псевдослучайной последовательностью; - * - * Механизм генерации паттернов: - * - реализованный механизм является компромиссом между скоростью/простотой - * и гибкостью, необходимой для получения последовательностей, которых - * будет достаточно для проверки сценариев разделения и слияния страниц - * с данными внутри mdbx; - * - псевдо-случайные паттерны реализуются посредством набора инъективных - * отображающих функций; - * - не-псевдо-случайные паттерны реализуются посредством параметризируемого - * трех-этапного преобразования: - * 1) смещение (сложение) по модулю; - * 2) циклический сдвиг; - * 3) добавление абсолютного смещения (базы); - */ - -typedef uint64_t serial_t; - -enum : serial_t { - serial_minwith = 8, - serial_maxwith = sizeof(serial_t) * 8, - serial_allones = ~(serial_t)0 -}; - -struct result { - MDBX_val value; - size_t limit; - union { - uint8_t bytes[sizeof(uint64_t)]; - uint32_t u32; - uint64_t u64; - }; -}; - -//----------------------------------------------------------------------------- - -struct buffer_deleter : public std::unary_function<void, result *> { - void operator()(result *buffer) const { free(buffer); } -}; - -typedef std::unique_ptr<result, buffer_deleter> buffer; - -buffer alloc(size_t limit); - -class maker { - config::keygen_params_pod mapping; - serial_t base; - serial_t salt; - - struct essentials { - uint8_t minlen; - uint8_t flags; - uint16_t maxlen; - } key_essentials, value_essentials; - - static void mk(const serial_t serial, const essentials ¶ms, result &out); - -public: - maker() { memset(this, 0, sizeof(*this)); } - - void pair(serial_t serial, const buffer &key, buffer &value, - serial_t value_age); - void setup(const config::actor_params_pod &actor, unsigned thread_number); - - bool increment(serial_t &serial, int delta); -}; - -size_t length(serial_t serial); - -} /* namespace keygen */ diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/log.cc b/plugins/Dbx_mdbx/src/libmdbx/test/log.cc deleted file mode 100644 index 521e1d6900..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/log.cc +++ /dev/null @@ -1,289 +0,0 @@ -/* - * Copyright 2017-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#include "test.h" - -static void fflushall() { fflush(nullptr); } - -void failure(const char *fmt, ...) { - va_list ap; - va_start(ap, fmt); - fflushall(); - logging::output(logging::failure, fmt, ap); - va_end(ap); - fflushall(); - exit(EXIT_FAILURE); -} - -const char *test_strerror(int errnum) { - static __thread char buf[1024]; - return mdbx_strerror_r(errnum, buf, sizeof(buf)); -} - -void __noreturn failure_perror(const char *what, int errnum) { - failure("%s failed: %s (%d)\n", what, test_strerror(errnum), errnum); -} - -//----------------------------------------------------------------------------- - -namespace logging { - -static std::string prefix; -static std::string suffix; -static loglevel level; -static FILE *last; - -void setup(loglevel _level, const std::string &_prefix) { - level = (_level > error) ? failure : _level; - prefix = _prefix; -} - -void setup(const std::string &_prefix) { prefix = _prefix; } - -const char *level2str(const loglevel alevel) { - switch (alevel) { - default: - return "invalid/unknown"; - case extra: - return "extra"; - case trace: - return "trace"; - case verbose: - return "verbose"; - case info: - return "info"; - case notice: - return "notice"; - case warning: - return "warning"; - case error: - return "error"; - case failure: - return "failure"; - } -} - -bool output(const loglevel priority, const char *format, ...) { - if (priority < level) - return false; - - va_list ap; - va_start(ap, format); - output(priority, format, ap); - va_end(ap); - return true; -} - -bool output(const logging::loglevel priority, const char *format, va_list ap) { - if (last) { - putc('\n', last); - fflush(last); - last = nullptr; - } - - if (priority < level) - return false; - - chrono::time now = chrono::now_realtime(); - struct tm tm; -#ifdef _MSC_VER - int rc = _localtime32_s(&tm, (const __time32_t *)&now.utc); -#else - time_t time = now.utc; - int rc = localtime_r(&time, &tm) ? MDBX_SUCCESS : errno; -#endif - if (rc != MDBX_SUCCESS) - failure_perror("localtime_r()", rc); - - last = stdout; - fprintf(last, - "[ %02d%02d%02d-%02d:%02d:%02d.%06d_%05u %-10s %.4s ] %s" /* TODO */, - tm.tm_year - 100, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, - tm.tm_sec, chrono::fractional2us(now.fractional), osal_getpid(), - prefix.c_str(), level2str(priority), suffix.c_str()); - - va_list ones; - memset(&ones, 0, sizeof(ones)) /* zap MSVC and other stupid compilers */; - if (priority >= error) - va_copy(ones, ap); - vfprintf(last, format, ap); - - size_t len = strlen(format); - char end = len ? format[len - 1] : '\0'; - - switch (end) { - default: - putc('\n', last); - // fall through - case '\n': - fflush(last); - last = nullptr; - // fall through - case ' ': - case '_': - case ':': - case '|': - case ',': - case '\t': - case '\b': - case '\r': - case '\0': - break; - } - - if (priority >= error) { - if (last != stderr) { - fprintf(stderr, "[ %05u %-10s %.4s ] %s", osal_getpid(), prefix.c_str(), - level2str(priority), suffix.c_str()); - vfprintf(stderr, format, ones); - if (end != '\n') - putc('\n', stderr); - fflush(stderr); - } - va_end(ones); - } - - return true; -} - -bool feed(const char *format, va_list ap) { - if (!last) - return false; - - vfprintf(last, format, ap); - size_t len = strlen(format); - if (len && format[len - 1] == '\n') { - fflush(last); - last = nullptr; - } - return true; -} - -bool feed(const char *format, ...) { - if (!last) - return false; - - va_list ap; - va_start(ap, format); - feed(format, ap); - va_end(ap); - return true; -} - -local_suffix::local_suffix(const char *c_str) - : trim_pos(suffix.size()), indent(0) { - suffix.append(c_str); -} - -local_suffix::local_suffix(const std::string &str) - : trim_pos(suffix.size()), indent(0) { - suffix.append(str); -} - -void local_suffix::push() { - indent += 1; - suffix.push_back('\t'); -} - -void local_suffix::pop() { - assert(indent > 0); - if (indent > 0) { - indent -= 1; - suffix.pop_back(); - } -} - -local_suffix::~local_suffix() { suffix.erase(trim_pos); } - -} // namespace logging - -void log_extra(const char *msg, ...) { - if (logging::extra >= logging::level) { - va_list ap; - va_start(ap, msg); - logging::output(logging::extra, msg, ap); - va_end(ap); - } else - logging::last = nullptr; -} - -void log_trace(const char *msg, ...) { - if (logging::trace >= logging::level) { - va_list ap; - va_start(ap, msg); - logging::output(logging::trace, msg, ap); - va_end(ap); - } else - logging::last = nullptr; -} - -void log_verbose(const char *msg, ...) { - if (logging::verbose >= logging::level) { - va_list ap; - va_start(ap, msg); - logging::output(logging::verbose, msg, ap); - va_end(ap); - } else - logging::last = nullptr; -} - -void log_info(const char *msg, ...) { - if (logging::info >= logging::level) { - va_list ap; - va_start(ap, msg); - logging::output(logging::info, msg, ap); - va_end(ap); - } else - logging::last = nullptr; -} - -void log_notice(const char *msg, ...) { - if (logging::notice >= logging::level) { - va_list ap; - va_start(ap, msg); - logging::output(logging::notice, msg, ap); - va_end(ap); - } else - logging::last = nullptr; -} - -void log_warning(const char *msg, ...) { - if (logging::warning >= logging::level) { - va_list ap; - va_start(ap, msg); - logging::output(logging::warning, msg, ap); - va_end(ap); - } else - logging::last = nullptr; -} - -void log_error(const char *msg, ...) { - if (logging::error >= logging::level) { - va_list ap; - va_start(ap, msg); - logging::output(logging::error, msg, ap); - va_end(ap); - } else - logging::last = nullptr; -} - -void log_trouble(const char *where, const char *what, int errnum) { - log_error("%s: %s %s", where, what, test_strerror(errnum)); -} - -bool log_enabled(const logging::loglevel priority) { - return (priority >= logging::level); -} - -void log_flush(void) { fflushall(); } diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/log.h b/plugins/Dbx_mdbx/src/libmdbx/test/log.h deleted file mode 100644 index e97e954cea..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/log.h +++ /dev/null @@ -1,91 +0,0 @@ -/* - * Copyright 2017-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#pragma once - -#include "base.h" - -void __noreturn usage(void); - -#ifdef __GNUC__ -#define __printf_args(format_index, first_arg) \ - __attribute__((format(printf, format_index, first_arg))) -#else -#define __printf_args(format_index, first_arg) -#endif - -void __noreturn __printf_args(1, 2) failure(const char *fmt, ...); - -void __noreturn failure_perror(const char *what, int errnum); -const char *test_strerror(int errnum); - -namespace logging { - -enum loglevel { - extra, - trace, - verbose, - info, - notice, - warning, - error, - failure, -}; - -const char *level2str(const loglevel level); -void setup(loglevel level, const std::string &prefix); -void setup(const std::string &prefix); - -bool output(const loglevel priority, const char *format, va_list ap); -bool __printf_args(2, 3) - output(const loglevel priority, const char *format, ...); -bool feed(const char *format, va_list ap); -bool __printf_args(1, 2) feed(const char *format, ...); - -class local_suffix { -protected: - size_t trim_pos; - int indent; - -public: - local_suffix(const local_suffix &) = delete; - local_suffix(const local_suffix &&) = delete; - const local_suffix &operator=(const local_suffix &) = delete; - - local_suffix(const char *c_str); - local_suffix(const std::string &str); - void push(); - void pop(); - ~local_suffix(); -}; - -} // namespace logging - -void __printf_args(1, 2) log_extra(const char *msg, ...); -void __printf_args(1, 2) log_trace(const char *msg, ...); -void __printf_args(1, 2) log_verbose(const char *msg, ...); -void __printf_args(1, 2) log_info(const char *msg, ...); -void __printf_args(1, 2) log_notice(const char *msg, ...); -void __printf_args(1, 2) log_warning(const char *msg, ...); -void __printf_args(1, 2) log_error(const char *msg, ...); - -void log_trouble(const char *where, const char *what, int errnum); -void log_flush(void); -bool log_enabled(const logging::loglevel priority); - -#ifdef _DEBUG -#define TRACE(...) log_trace(__VA_ARGS__) -#else -#define TRACE(...) __noop(__VA_ARGS__) -#endif diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/main.cc b/plugins/Dbx_mdbx/src/libmdbx/test/main.cc deleted file mode 100644 index bc3198ed3a..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/main.cc +++ /dev/null @@ -1,395 +0,0 @@ -/* - * Copyright 2017-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#include "test.h" - -void __noreturn usage(void) { - printf("usage:\n" - "\tFIXME\n"); - exit(EXIT_FAILURE); -} - -//----------------------------------------------------------------------------- - -void actor_params::set_defaults(const std::string &tmpdir) { - pathname_log = ""; - loglevel = -#ifdef NDEBUG - logging::info; -#else - logging::trace; -#endif - - pathname_db = tmpdir + "mdbx-test.db"; - mode_flags = MDBX_NOSUBDIR | MDBX_WRITEMAP | MDBX_MAPASYNC | MDBX_NORDAHEAD | - MDBX_NOMEMINIT | MDBX_COALESCE | MDBX_LIFORECLAIM; - table_flags = MDBX_DUPSORT; - size = 1024 * 1024 * 4; - - keygen.seed = 1; - keygen.keycase = kc_random; - keygen.width = 32; - keygen.mesh = 32; - keygen.split = keygen.width / 2; - keygen.rotate = 0; - keygen.offset = 0; - - test_duration = 0; - test_nops = 1000; - nrepeat = 1; - nthreads = 1; - - keylen_min = 0; - keylen_max = 42; - datalen_min = 0; - datalen_max = 256; - - batch_read = 4; - batch_write = 4; - - delaystart = 0; - waitfor_nops = 0; - inject_writefaultn = 0; - - drop_table = false; - - max_readers = 42; - max_tables = 42; - - global::config::timeout_duration_seconds = 0 /* infinite */; - global::config::dump_config = true; - global::config::cleanup_before = true; - global::config::cleanup_after = true; - global::config::failfast = true; - global::config::progress_indicator = osal_istty(STDERR_FILENO); -} - -namespace global { - -std::vector<actor_config> actors; -std::unordered_map<unsigned, actor_config *> events; -std::unordered_map<mdbx_pid_t, actor_config *> pid2actor; -std::set<std::string> databases; -unsigned nactors; -chrono::time start_motonic; -chrono::time deadline_motonic; -bool singlemode; - -namespace config { -unsigned timeout_duration_seconds; -bool dump_config; -bool cleanup_before; -bool cleanup_after; -bool failfast; -bool progress_indicator; -} /* namespace config */ - -} /* namespace global */ - -//----------------------------------------------------------------------------- - -const char global::thunk_param_prefix[] = "--execute="; - -std::string thunk_param(const actor_config &config) { - return config.serialize(global::thunk_param_prefix); -} - -void cleanup() { - log_trace(">> cleanup"); - /* TODO: remove each database */ - log_trace("<< cleanup"); -} - -int main(int argc, char *const argv[]) { - -#ifdef _DEBUG - log_trace("#argc = %d", argc); - for (int i = 0; i < argc; ++i) - log_trace("#argv[%d] = %s", i, argv[i]); -#endif /* _DEBUG */ - - if (argc < 2) - failure("No parameters given\n"); - - if (argc == 2 && strncmp(argv[1], global::thunk_param_prefix, - strlen(global::thunk_param_prefix)) == 0) - return test_execute( - actor_config(argv[1] + strlen(global::thunk_param_prefix))) - ? EXIT_SUCCESS - : EXIT_FAILURE; - - actor_params params; - params.set_defaults(osal_tempdir()); - global::config::dump_config = true; - logging::setup((logging::loglevel)params.loglevel, "main"); - unsigned last_space_id = 0; - - for (int narg = 1; narg < argc; ++narg) { - const char *value = nullptr; - - if (config::parse_option(argc, argv, narg, "case", &value)) { - testcase_setup(value, params, last_space_id); - continue; - } - if (config::parse_option(argc, argv, narg, "pathname", params.pathname_db)) - continue; - if (config::parse_option(argc, argv, narg, "mode", params.mode_flags, - config::mode_bits)) - continue; - if (config::parse_option(argc, argv, narg, "table", params.table_flags, - config::table_bits)) - continue; - if (config::parse_option(argc, argv, narg, "size", params.size, - config::binary, 4096 * 4)) - continue; - - if (config::parse_option(argc, argv, narg, "keygen.width", - params.keygen.width, 1, 64)) - continue; - if (config::parse_option(argc, argv, narg, "keygen.mesh", - params.keygen.mesh, 1, 64)) - continue; - if (config::parse_option(argc, argv, narg, "keygen.seed", - params.keygen.seed, config::no_scale)) - continue; - if (config::parse_option(argc, argv, narg, "keygen.split", - params.keygen.split, 1, 64)) - continue; - if (config::parse_option(argc, argv, narg, "keygen.rotate", - params.keygen.rotate, 1, 64)) - continue; - if (config::parse_option(argc, argv, narg, "keygen.offset", - params.keygen.offset, config::binary)) - continue; - if (config::parse_option(argc, argv, narg, "keygen.case", &value)) { - keycase_setup(value, params); - continue; - } - - if (config::parse_option(argc, argv, narg, "repeat", params.nrepeat, - config::no_scale)) - continue; - if (config::parse_option(argc, argv, narg, "threads", params.nthreads, - config::no_scale, 1, 64)) - continue; - if (config::parse_option(argc, argv, narg, "timeout", - global::config::timeout_duration_seconds, - config::duration, 1)) - continue; - if (config::parse_option(argc, argv, narg, "keylen.min", params.keylen_min, - config::no_scale, 0, params.keylen_max)) - continue; - if (config::parse_option(argc, argv, narg, "keylen.max", params.keylen_max, - config::no_scale, params.keylen_min, - mdbx_get_maxkeysize(0))) - continue; - if (config::parse_option(argc, argv, narg, "datalen.min", - params.datalen_min, config::no_scale, 0, - params.datalen_max)) - continue; - if (config::parse_option(argc, argv, narg, "datalen.max", - params.datalen_max, config::no_scale, - params.datalen_min, MDBX_MAXDATASIZE)) - continue; - if (config::parse_option(argc, argv, narg, "batch.read", params.batch_read, - config::no_scale, 1)) - continue; - if (config::parse_option(argc, argv, narg, "batch.write", - params.batch_write, config::no_scale, 1)) - continue; - if (config::parse_option(argc, argv, narg, "delay", params.delaystart, - config::duration)) - continue; - if (config::parse_option(argc, argv, narg, "wait4ops", params.waitfor_nops, - config::decimal)) - continue; - if (config::parse_option(argc, argv, narg, "inject-writefault", - params.inject_writefaultn, config::decimal)) - continue; - if (config::parse_option(argc, argv, narg, "drop", params.drop_table)) - continue; - if (config::parse_option(argc, argv, narg, "dump-config", - global::config::dump_config)) - continue; - if (config::parse_option(argc, argv, narg, "cleanup-before", - global::config::cleanup_before)) - continue; - if (config::parse_option(argc, argv, narg, "cleanup-after", - global::config::cleanup_after)) - continue; - if (config::parse_option(argc, argv, narg, "max-readers", - params.max_readers, config::no_scale, 1, 255)) - continue; - if (config::parse_option(argc, argv, narg, "max-tables", params.max_tables, - config::no_scale, 1, INT16_MAX)) - continue; - - if (config::parse_option(argc, argv, narg, "no-delay", nullptr)) { - params.delaystart = 0; - continue; - } - if (config::parse_option(argc, argv, narg, "no-wait", nullptr)) { - params.waitfor_nops = 0; - continue; - } - if (config::parse_option(argc, argv, narg, "duration", params.test_duration, - config::duration, 1)) { - params.test_nops = 0; - continue; - } - if (config::parse_option(argc, argv, narg, "nops", params.test_nops, - config::decimal, 1)) { - params.test_duration = 0; - continue; - } - if (config::parse_option(argc, argv, narg, "hill", &value, "auto")) { - configure_actor(last_space_id, ac_hill, value, params); - continue; - } - if (config::parse_option(argc, argv, narg, "jitter", nullptr)) { - configure_actor(last_space_id, ac_jitter, value, params); - continue; - } - if (config::parse_option(argc, argv, narg, "dead.reader", nullptr)) { - configure_actor(last_space_id, ac_deadread, value, params); - continue; - } - if (config::parse_option(argc, argv, narg, "dead.writer", nullptr)) { - configure_actor(last_space_id, ac_deadwrite, value, params); - continue; - } - if (config::parse_option(argc, argv, narg, "failfast", - global::config::failfast)) - continue; - if (config::parse_option(argc, argv, narg, "progress", - global::config::progress_indicator)) - continue; - - if (*argv[narg] != '-') - testcase_setup(argv[narg], params, last_space_id); - else - failure("Unknown option '%s'\n", argv[narg]); - } - - if (global::config::dump_config) - config::dump(); - - //-------------------------------------------------------------------------- - - if (global::actors.empty()) { - log_notice("no testcase(s) configured, exiting"); - return EXIT_SUCCESS; - } - - bool failed = false; - global::start_motonic = chrono::now_motonic(); - global::deadline_motonic.fixedpoint = - (global::config::timeout_duration_seconds == 0) - ? chrono::infinite().fixedpoint - : global::start_motonic.fixedpoint + - chrono::from_seconds(global::config::timeout_duration_seconds) - .fixedpoint; - - if (global::config::cleanup_before) - cleanup(); - - if (global::actors.size() == 1) { - logging::setup("main"); - global::singlemode = true; - if (!test_execute(global::actors.front())) - failed = true; - } else { - logging::setup("overlord"); - - log_trace("=== preparing..."); - log_trace(">> osal_setup"); - osal_setup(global::actors); - log_trace("<< osal_setup"); - - for (auto &a : global::actors) { - mdbx_pid_t pid; - log_trace(">> actor_start"); - int rc = osal_actor_start(a, pid); - log_trace("<< actor_start"); - if (rc) { - log_trace(">> killall_actors: (%s)", "start failed"); - osal_killall_actors(); - log_trace("<< killall_actors"); - failure("Failed to start actor #%u (%s)\n", a.actor_id, - test_strerror(rc)); - } - global::pid2actor[pid] = &a; - } - - log_trace("=== ready to start..."); - atexit(osal_killall_actors); - log_trace(">> wait4barrier"); - osal_wait4barrier(); - log_trace("<< wait4barrier"); - - size_t left = global::actors.size(); - log_trace("=== polling..."); - while (left > 0) { - unsigned timeout_seconds_left = INT_MAX; - chrono::time now_motonic = chrono::now_motonic(); - if (now_motonic.fixedpoint >= global::deadline_motonic.fixedpoint) - timeout_seconds_left = 0; - else { - chrono::time left_motonic; - left_motonic.fixedpoint = - global::deadline_motonic.fixedpoint - now_motonic.fixedpoint; - timeout_seconds_left = left_motonic.seconds(); - } - - mdbx_pid_t pid; - int rc = osal_actor_poll(pid, timeout_seconds_left); - if (rc) - failure("Poll error: %s (%d)\n", test_strerror(rc), rc); - - if (pid) { - actor_status status = osal_actor_info(pid); - actor_config *actor = global::pid2actor.at(pid); - if (!actor) - continue; - - log_info("actor #%u, id %d, pid %u: %s\n", actor->actor_id, - actor->space_id, pid, status2str(status)); - if (status > as_running) { - left -= 1; - if (status != as_successful) { - if (global::config::failfast && !failed) { - log_trace(">> killall_actors: (%s)", "failfast"); - osal_killall_actors(); - log_trace("<< killall_actors"); - } - failed = true; - } - } - } else { - if (timeout_seconds_left == 0) - failure("Timeout\n"); - } - } - log_trace("=== done..."); - } - - log_notice("RESULT: %s\n", failed ? "Failed" : "Successful"); - if (global::config::cleanup_before) { - if (failed) - log_info("skip cleanup"); - else - cleanup(); - } - return failed ? EXIT_FAILURE : EXIT_SUCCESS; -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/osal-unix.cc b/plugins/Dbx_mdbx/src/libmdbx/test/osal-unix.cc deleted file mode 100644 index 8132e267ef..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/osal-unix.cc +++ /dev/null @@ -1,293 +0,0 @@ -/* - * Copyright 2017-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#include "test.h" - -#include <pthread.h> -#include <signal.h> -#include <sys/mman.h> -#include <sys/types.h> -#include <sys/wait.h> -#include <unistd.h> - -struct shared_t { - pthread_barrier_t barrier; - pthread_mutex_t mutex; - size_t conds_size; - pthread_cond_t conds[1]; -}; - -static shared_t *shared; - -void osal_wait4barrier(void) { - assert(shared != nullptr && shared != MAP_FAILED); - int rc = pthread_barrier_wait(&shared->barrier); - if (rc != 0 && rc != PTHREAD_BARRIER_SERIAL_THREAD) { - failure_perror("pthread_barrier_wait(shared)", rc); - } -} - -void osal_setup(const std::vector<actor_config> &actors) { - assert(shared == nullptr); - - pthread_mutexattr_t mutexattr; - int rc = pthread_mutexattr_init(&mutexattr); - if (rc) - failure_perror("pthread_mutexattr_init()", rc); - rc = pthread_mutexattr_setpshared(&mutexattr, PTHREAD_PROCESS_SHARED); - if (rc) - failure_perror("pthread_mutexattr_setpshared()", rc); - - pthread_barrierattr_t barrierattr; - rc = pthread_barrierattr_init(&barrierattr); - if (rc) - failure_perror("pthread_barrierattr_init()", rc); - rc = pthread_barrierattr_setpshared(&barrierattr, PTHREAD_PROCESS_SHARED); - if (rc) - failure_perror("pthread_barrierattr_setpshared()", rc); - - pthread_condattr_t condattr; - rc = pthread_condattr_init(&condattr); - if (rc) - failure_perror("pthread_condattr_init()", rc); - rc = pthread_condattr_setpshared(&condattr, PTHREAD_PROCESS_SHARED); - if (rc) - failure_perror("pthread_condattr_setpshared()", rc); - - shared = (shared_t *)mmap( - nullptr, sizeof(shared_t) + actors.size() * sizeof(pthread_cond_t), - PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1, 0); - if (MAP_FAILED == (void *)shared) - failure_perror("mmap(shared_conds)", errno); - - rc = pthread_mutex_init(&shared->mutex, &mutexattr); - if (rc) - failure_perror("pthread_mutex_init(shared)", rc); - - rc = pthread_barrier_init(&shared->barrier, &barrierattr, actors.size() + 1); - if (rc) - failure_perror("pthread_barrier_init(shared)", rc); - - const size_t n = actors.size() + 1; - for (size_t i = 0; i < n; ++i) { - pthread_cond_t *event = &shared->conds[i]; - rc = pthread_cond_init(event, &condattr); - if (rc) - failure_perror("pthread_cond_init(shared)", rc); - log_trace("osal_setup: event(shared pthread_cond) %" PRIuPTR " -> %p", i, - event); - } - shared->conds_size = actors.size() + 1; - - pthread_barrierattr_destroy(&barrierattr); - pthread_condattr_destroy(&condattr); - pthread_mutexattr_destroy(&mutexattr); -} - -void osal_broadcast(unsigned id) { - assert(shared != nullptr && shared != MAP_FAILED); - log_trace("osal_broadcast: event %u", id); - if (id >= shared->conds_size) - failure("osal_broadcast: id > limit"); - int rc = pthread_cond_broadcast(shared->conds + id); - if (rc) - failure_perror("sem_post(shared)", rc); -} - -int osal_waitfor(unsigned id) { - assert(shared != nullptr && shared != MAP_FAILED); - - log_trace("osal_waitfor: event %u", id); - if (id >= shared->conds_size) - failure("osal_waitfor: id > limit"); - - int rc = pthread_mutex_lock(&shared->mutex); - if (rc != 0) - failure_perror("pthread_mutex_lock(shared)", rc); - - rc = pthread_cond_wait(shared->conds + id, &shared->mutex); - if (rc && rc != EINTR) - failure_perror("pthread_cond_wait(shared)", rc); - - rc = pthread_mutex_unlock(&shared->mutex); - if (rc != 0) - failure_perror("pthread_mutex_unlock(shared)", rc); - - return (rc == 0) ? true : false; -} - -//----------------------------------------------------------------------------- - -const std::string -actor_config::osal_serialize(simple_checksum &checksum) const { - (void)checksum; - /* not used in workload, but just for testing */ - return "unix.fork"; -} - -bool actor_config::osal_deserialize(const char *str, const char *end, - simple_checksum &checksum) { - (void)checksum; - /* not used in workload, but just for testing */ - return strncmp(str, "unix.fork", 9) == 0 && str + 9 == end; -} - -//----------------------------------------------------------------------------- - -static std::unordered_map<pid_t, actor_status> childs; - -static void handler_SIGCHLD(int unused) { (void)unused; } - -mdbx_pid_t osal_getpid(void) { return getpid(); } - -int osal_delay(unsigned seconds) { return sleep(seconds) ? errno : 0; } - -int osal_actor_start(const actor_config &config, mdbx_pid_t &pid) { - if (childs.empty()) - signal(SIGCHLD, handler_SIGCHLD); - - pid = fork(); - - if (pid == 0) { - const bool result = test_execute(config); - exit(result ? EXIT_SUCCESS : EXIT_FAILURE); - } - - if (pid < 0) - return errno; - - log_trace("osal_actor_start: fork pid %i for %u", pid, config.actor_id); - childs[pid] = as_running; - return 0; -} - -actor_status osal_actor_info(const mdbx_pid_t pid) { return childs.at(pid); } - -void osal_killall_actors(void) { - for (auto &pair : childs) { - kill(pair.first, SIGKILL); - pair.second = as_killed; - } -} - -int osal_actor_poll(mdbx_pid_t &pid, unsigned timeout) { -retry: - int status, options = WNOHANG; -#ifdef WUNTRACED - options |= WUNTRACED; -#endif -#ifdef WCONTINUED - options |= WCONTINUED; -#endif - pid = waitpid(0, &status, options); - - if (pid > 0) { - if (WIFEXITED(status)) - childs[pid] = - (WEXITSTATUS(status) == EXIT_SUCCESS) ? as_successful : as_failed; - else if (WIFSIGNALED(status) || WCOREDUMP(status)) - childs[pid] = as_killed; - else if (WIFSTOPPED(status)) - childs[pid] = as_debuging; - else if (WIFCONTINUED(status)) - childs[pid] = as_running; - else { - assert(false); - } - return 0; - } - - if (pid == 0) { - if (timeout && sleep(timeout)) - goto retry; - return 0; - } - - switch (errno) { - case EINTR: - pid = 0; - return 0; - - case ECHILD: - default: - pid = 0; - return errno; - } -} - -void osal_yield(void) { - if (sched_yield()) - failure_perror("sched_yield()", errno); -} - -void osal_udelay(unsigned us) { - chrono::time until, now = chrono::now_motonic(); - until.fixedpoint = now.fixedpoint + chrono::from_us(us).fixedpoint; - struct timespec ts; - - static unsigned threshold_us; - if (threshold_us == 0) { - if (clock_getres(CLOCK_PROCESS_CPUTIME_ID, &ts)) { - int rc = errno; - failure_perror("clock_getres(CLOCK_PROCESS_CPUTIME_ID)", rc); - } - chrono::time threshold = chrono::from_timespec(ts); - assert(threshold.seconds() == 0); - - threshold_us = chrono::fractional2us(threshold.fractional); - if (threshold_us < 1000) - threshold_us = 1000; - } - - ts.tv_sec = ts.tv_nsec = 0; - if (us > threshold_us) { - ts.tv_sec = us / 1000000u; - ts.tv_nsec = (us % 1000000u) * 1000u; - } - - do { - if (us > threshold_us) { - if (nanosleep(&ts, &ts)) { - int rc = errno; - /* if (rc == EINTR) { ... } ? */ - failure_perror("usleep()", rc); - } - us = ts.tv_sec * 1000000u + ts.tv_nsec / 1000u; - } - cpu_relax(); - - now = chrono::now_motonic(); - } while (until.fixedpoint > now.fixedpoint); -} - -bool osal_istty(int fd) { return isatty(fd) == 1; } - -std::string osal_tempdir(void) { - const char *tempdir = getenv("TMPDIR"); - if (!tempdir) - tempdir = getenv("TMP"); - if (!tempdir) - tempdir = getenv("TEMPDIR"); - if (!tempdir) - tempdir = getenv("TEMP"); - if (tempdir) { - std::string dir(tempdir); - if (!dir.empty() && dir.at(dir.length() - 1) != '/') - dir.append("/"); - return dir; - } - if (access("/dev/shm/", R_OK | W_OK | X_OK) == 0) - return "/dev/shm/"; - return ""; -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/osal-windows.cc b/plugins/Dbx_mdbx/src/libmdbx/test/osal-windows.cc deleted file mode 100644 index 109c835a96..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/osal-windows.cc +++ /dev/null @@ -1,398 +0,0 @@ -/* - * Copyright 2017-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#include "test.h" - -static std::unordered_map<unsigned, HANDLE> events; -static HANDLE hBarrierSemaphore, hBarrierEvent; - -static int waitstatus2errcode(DWORD result) { - switch (result) { - case WAIT_OBJECT_0: - return MDBX_SUCCESS; - case WAIT_FAILED: - return GetLastError(); - case WAIT_ABANDONED: - return ERROR_ABANDONED_WAIT_0; - case WAIT_IO_COMPLETION: - return ERROR_USER_APC; - case WAIT_TIMEOUT: - return ERROR_TIMEOUT; - default: - return ERROR_UNHANDLED_ERROR; - } -} - -void osal_wait4barrier(void) { - DWORD rc = WaitForSingleObject(hBarrierSemaphore, 0); - switch (rc) { - default: - failure_perror("WaitForSingleObject(BarrierSemaphore)", - waitstatus2errcode(rc)); - case WAIT_OBJECT_0: - rc = WaitForSingleObject(hBarrierEvent, INFINITE); - if (rc != WAIT_OBJECT_0) - failure_perror("WaitForSingleObject(BarrierEvent)", - waitstatus2errcode(rc)); - break; - case WAIT_TIMEOUT: - if (!SetEvent(hBarrierEvent)) - failure_perror("SetEvent(BarrierEvent)", GetLastError()); - break; - } -} - -static HANDLE make_inharitable(HANDLE hHandle) { - assert(hHandle != NULL && hHandle != INVALID_HANDLE_VALUE); - if (!DuplicateHandle(GetCurrentProcess(), hHandle, GetCurrentProcess(), - &hHandle, 0, TRUE, - DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS)) - failure_perror("DuplicateHandle()", GetLastError()); - return hHandle; -} - -void osal_setup(const std::vector<actor_config> &actors) { - assert(events.empty()); - const size_t n = actors.size() + 1; - events.reserve(n); - - for (unsigned i = 0; i < n; ++i) { - HANDLE hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); - if (!hEvent) - failure_perror("CreateEvent()", GetLastError()); - hEvent = make_inharitable(hEvent); - log_trace("osal_setup: event %" PRIuPTR " -> %p", i, hEvent); - events[i] = hEvent; - } - - hBarrierSemaphore = CreateSemaphore(NULL, 0, (LONG)actors.size(), NULL); - if (!hBarrierSemaphore) - failure_perror("CreateSemaphore(BarrierSemaphore)", GetLastError()); - hBarrierSemaphore = make_inharitable(hBarrierSemaphore); - - hBarrierEvent = CreateEvent(NULL, TRUE, FALSE, NULL); - if (!hBarrierEvent) - failure_perror("CreateEvent(BarrierEvent)", GetLastError()); - hBarrierEvent = make_inharitable(hBarrierEvent); -} - -void osal_broadcast(unsigned id) { - log_trace("osal_broadcast: event %u", id); - if (!SetEvent(events.at(id))) - failure_perror("SetEvent()", GetLastError()); -} - -int osal_waitfor(unsigned id) { - log_trace("osal_waitfor: event %u", id); - DWORD rc = WaitForSingleObject(events.at(id), INFINITE); - return waitstatus2errcode(rc); -} - -mdbx_pid_t osal_getpid(void) { return GetCurrentProcessId(); } - -int osal_delay(unsigned seconds) { - Sleep(seconds * 1000u); - return 0; -} - -//----------------------------------------------------------------------------- - -const std::string -actor_config::osal_serialize(simple_checksum &checksum) const { - checksum.push(hBarrierSemaphore); - checksum.push(hBarrierEvent); - - HANDLE hWait = INVALID_HANDLE_VALUE; - if (wait4id) { - hWait = events.at(wait4id); - checksum.push(hWait); - } - - HANDLE hSignal = INVALID_HANDLE_VALUE; - if (wanna_event4signalling()) { - hSignal = events.at(actor_id); - checksum.push(hSignal); - } - - return format("%p.%p.%p.%p", hBarrierSemaphore, hBarrierEvent, hWait, - hSignal); -} - -bool actor_config::osal_deserialize(const char *str, const char *end, - simple_checksum &checksum) { - - std::string copy(str, end - str); - TRACE(">> osal_deserialize(%s)\n", copy.c_str()); - - assert(hBarrierSemaphore == 0); - assert(hBarrierEvent == 0); - assert(events.empty()); - - HANDLE hWait, hSignal; - if (sscanf_s(copy.c_str(), "%p.%p.%p.%p", &hBarrierSemaphore, &hBarrierEvent, - &hWait, &hSignal) != 4) { - TRACE("<< osal_deserialize: failed\n"); - return false; - } - - checksum.push(hBarrierSemaphore); - checksum.push(hBarrierEvent); - - if (wait4id) { - checksum.push(hWait); - events[wait4id] = hWait; - } - - if (wanna_event4signalling()) { - checksum.push(hSignal); - events[actor_id] = hSignal; - } - - TRACE("<< osal_deserialize: OK\n"); - return true; -} - -//----------------------------------------------------------------------------- - -typedef std::pair<HANDLE, actor_status> child; -static std::unordered_map<mdbx_pid_t, child> childs; - -static void ArgvQuote(std::string &CommandLine, const std::string &Argument, - bool Force = false) - -/*++ - -https://blogs.msdn.microsoft.com/twistylittlepassagesallalike/2011/04/23/everyone-quotes-command-line-arguments-the-wrong-way/ - -Routine Description: - - This routine appends the given argument to a command line such - that CommandLineToArgvW will return the argument string unchanged. - Arguments in a command line should be separated by spaces; this - function does not add these spaces. - -Arguments: - - Argument - Supplies the argument to encode. - - CommandLine - Supplies the command line to which we append the encoded -argument string. - - Force - Supplies an indication of whether we should quote - the argument even if it does not contain any characters that would - ordinarily require quoting. - -Return Value: - - None. - -Environment: - - Arbitrary. - ---*/ - -{ - // - // Unless we're told otherwise, don't quote unless we actually - // need to do so --- hopefully avoid problems if programs won't - // parse quotes properly - // - - if (Force == false && Argument.empty() == false && - Argument.find_first_of(" \t\n\v\"") == Argument.npos) { - CommandLine.append(Argument); - } else { - CommandLine.push_back('"'); - - for (auto It = Argument.begin();; ++It) { - unsigned NumberBackslashes = 0; - - while (It != Argument.end() && *It == '\\') { - ++It; - ++NumberBackslashes; - } - - if (It == Argument.end()) { - // - // Escape all backslashes, but let the terminating - // double quotation mark we add below be interpreted - // as a metacharacter. - // - CommandLine.append(NumberBackslashes * 2, '\\'); - break; - } else if (*It == L'"') { - // - // Escape all backslashes and the following - // double quotation mark. - // - CommandLine.append(NumberBackslashes * 2 + 1, '\\'); - CommandLine.push_back(*It); - } else { - // - // Backslashes aren't special here. - // - CommandLine.append(NumberBackslashes, '\\'); - CommandLine.push_back(*It); - } - } - - CommandLine.push_back('"'); - } -} - -int osal_actor_start(const actor_config &config, mdbx_pid_t &pid) { - if (childs.size() == MAXIMUM_WAIT_OBJECTS) - failure("Could't manage more that %u actors on Windows\n", - MAXIMUM_WAIT_OBJECTS); - - _flushall(); - - STARTUPINFOA StartupInfo; - GetStartupInfoA(&StartupInfo); - - char exename[_MAX_PATH]; - DWORD exename_size = sizeof(exename); - if (!QueryFullProcessImageNameA(GetCurrentProcess(), 0, exename, - &exename_size)) - failure_perror("QueryFullProcessImageName()", GetLastError()); - - std::string cmdline = "test_mdbx.child "; - ArgvQuote(cmdline, thunk_param(config)); - - PROCESS_INFORMATION ProcessInformation; - if (!CreateProcessA(exename, const_cast<char *>(cmdline.c_str()), - NULL, // Retuned process handle is not inheritable. - NULL, // Retuned thread handle is not inheritable. - TRUE, // Child inherits all inheritable handles. - NORMAL_PRIORITY_CLASS | INHERIT_PARENT_AFFINITY, - NULL, // Inherit the parent's environment. - NULL, // Inherit the parent's current directory. - &StartupInfo, &ProcessInformation)) - return GetLastError(); - - CloseHandle(ProcessInformation.hThread); - pid = ProcessInformation.dwProcessId; - childs[pid] = std::make_pair(ProcessInformation.hProcess, as_running); - return 0; -} - -actor_status osal_actor_info(const mdbx_pid_t pid) { - actor_status status = childs.at(pid).second; - if (status > as_running) - return status; - - DWORD ExitCode; - if (!GetExitCodeProcess(childs.at(pid).first, &ExitCode)) - failure_perror("GetExitCodeProcess()", GetLastError()); - - switch (ExitCode) { - case STILL_ACTIVE: - return as_running; - case EXIT_SUCCESS: - status = as_successful; - break; - // case EXCEPTION_BREAKPOINT: - case EXCEPTION_SINGLE_STEP: - status = as_debuging; - break; - case STATUS_CONTROL_C_EXIT: - case EXCEPTION_NONCONTINUABLE_EXCEPTION: - status = as_killed; - break; - default: - status = as_failed; - break; - } - - childs.at(pid).second = status; - return status; -} - -void osal_killall_actors(void) { - for (auto &pair : childs) - TerminateProcess(pair.second.first, STATUS_CONTROL_C_EXIT); -} - -int osal_actor_poll(mdbx_pid_t &pid, unsigned timeout) { - std::vector<HANDLE> handles; - handles.reserve(childs.size()); - for (const auto &pair : childs) - if (pair.second.second <= as_running) - handles.push_back(pair.second.first); - - DWORD rc = - MsgWaitForMultipleObjectsEx((DWORD)handles.size(), &handles[0], - (timeout > 60) ? 60 * 1000 : timeout * 1000, - QS_ALLINPUT | QS_ALLPOSTMESSAGE, 0); - - if (rc >= WAIT_OBJECT_0 && rc < WAIT_OBJECT_0 + handles.size()) { - pid = 0; - for (const auto &pair : childs) - if (pair.second.first == handles[rc - WAIT_OBJECT_0]) { - pid = pair.first; - break; - } - return 0; - } - - if (rc == WAIT_TIMEOUT) { - pid = 0; - return 0; - } - - return waitstatus2errcode(rc); -} - -void osal_yield(void) { SwitchToThread(); } - -void osal_udelay(unsigned us) { - chrono::time until, now = chrono::now_motonic(); - until.fixedpoint = now.fixedpoint + chrono::from_us(us).fixedpoint; - - static unsigned threshold_us; - if (threshold_us == 0) { -#if 1 - unsigned timeslice_ms = 1; - while (timeBeginPeriod(timeslice_ms) == TIMERR_NOCANDO) - ++timeslice_ms; - threshold_us = timeslice_ms * 1500u; -#else - ULONGLONG InterruptTimePrecise_100ns; - QueryInterruptTimePrecise(&InterruptTimePrecise_100ns); - threshold_us = InterruptTimePrecise_100ns / 5; -#endif - assert(threshold_us > 0); - } - - do { - if (us > threshold_us && us > 1000) { - DWORD rc = SleepEx(us / 1000, TRUE); - if (rc) - failure_perror("SleepEx()", waitstatus2errcode(rc)); - us = 0; - } - - YieldProcessor(); - now = chrono::now_motonic(); - } while (now.fixedpoint < until.fixedpoint); -} - -bool osal_istty(int fd) { return _isatty(fd) != 0; } - -std::string osal_tempdir(void) { - char buf[MAX_PATH + 1]; - DWORD len = GetTempPathA(sizeof(buf), buf); - return std::string(buf, len); -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/osal.h b/plugins/Dbx_mdbx/src/libmdbx/test/osal.h deleted file mode 100644 index c27282a656..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/osal.h +++ /dev/null @@ -1,46 +0,0 @@ -/* - * Copyright 2017-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#pragma once - -#include "base.h" - -void osal_setup(const std::vector<actor_config> &actors); -void osal_broadcast(unsigned id); -int osal_waitfor(unsigned id); - -int osal_actor_start(const actor_config &config, mdbx_pid_t &pid); -actor_status osal_actor_info(const mdbx_pid_t pid); -void osal_killall_actors(void); -int osal_actor_poll(mdbx_pid_t &pid, unsigned timeout); -void osal_wait4barrier(void); - -mdbx_pid_t osal_getpid(void); -int osal_delay(unsigned seconds); -void osal_udelay(unsigned us); -void osal_yield(void); -bool osal_istty(int fd); -std::string osal_tempdir(void); - -#ifdef _MSC_VER -#ifndef STDIN_FILENO -#define STDIN_FILENO _fileno(stdin) -#endif -#ifndef STDOUT_FILENO -#define STDOUT_FILENO _fileno(stdout) -#endif -#ifndef STDERR_FILENO -#define STDERR_FILENO _fileno(stderr) -#endif -#endif /* _MSC_VER */ diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/pcrf/CMakeLists.txt b/plugins/Dbx_mdbx/src/libmdbx/test/pcrf/CMakeLists.txt deleted file mode 100644 index 399c33f88f..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/pcrf/CMakeLists.txt +++ /dev/null @@ -1,7 +0,0 @@ -set(TARGET pcrf_test) -project(${TARGET}) - -add_executable(${TARGET} pcrf_test.c) - -target_link_libraries(${TARGET} mdbx) - diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/pcrf/README.md b/plugins/Dbx_mdbx/src/libmdbx/test/pcrf/README.md deleted file mode 100644 index b2c9b5ce95..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/pcrf/README.md +++ /dev/null @@ -1,2 +0,0 @@ -PCRF Session DB emulation test - diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/pcrf/pcrf_test.c b/plugins/Dbx_mdbx/src/libmdbx/test/pcrf/pcrf_test.c deleted file mode 100644 index 213c8b1d80..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/pcrf/pcrf_test.c +++ /dev/null @@ -1,404 +0,0 @@ -/* - * Copyright 2016-2017 Leonid Yuriev <leo@yuriev.ru>. - * Copyright 2015 Vladimir Romanov - * <https://www.linkedin.com/in/vladimirromanov>, Yota Lab. - * - * This file is part of libmdbx. - * - * ReOpenMDBX is free software; you can redistribute it and/or modify it under - * the terms of the GNU Affero General Public License as published by - * the Free Software Foundation; either version 3 of the License, or - * (at your option) any later version. - * - * ReOpenMDBX is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Affero General Public License for more details. - * - * You should have received a copy of the GNU Affero General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - -#include <sys/stat.h> -#include <sys/time.h> - -#include "mdbx.h" -#include <assert.h> -#include <inttypes.h> -#include <limits.h> -#include <stddef.h> -#include <stdint.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#define IP_PRINTF_ARG_HOST(addr) \ - (int)((addr) >> 24), (int)((addr) >> 16 & 0xff), (int)((addr) >> 8 & 0xff), \ - (int)((addr)&0xff) - -char opt_db_path[PATH_MAX] = "/root/lmdbx_bench2"; -static MDBX_env *env; -#define REC_COUNT 10240000 -int64_t ids[REC_COUNT * 10]; -int32_t ids_count = 0; - -int64_t mdbx_add_count = 0; -int64_t mdbx_del_count = 0; -uint64_t mdbx_add_time = 0; -uint64_t mdbx_del_time = 0; -int64_t obj_id = 0; -int64_t mdbx_data_size = 0; -int64_t mdbx_key_size = 0; - -typedef struct { - char session_id1[100]; - char session_id2[100]; - char ip[20]; - uint8_t fill[100]; -} session_data_t; - -typedef struct { - int64_t obj_id; - int8_t event_type; -} __attribute__((__packed__)) event_data_t; - -static void add_id_to_pool(int64_t id) { - ids[ids_count] = id; - ids_count++; -} - -static inline int64_t getClockUs(void) { - struct timespec val; -#ifdef CYGWIN - clock_gettime(CLOCK_REALTIME, &val); -#else - clock_gettime(CLOCK_MONOTONIC, &val); -#endif - return val.tv_sec * ((int64_t)1000000) + val.tv_nsec / 1000; -} - -static int64_t get_id_from_pool() { - if (ids_count == 0) { - return -1; - } - int32_t index = rand() % ids_count; - int64_t id = ids[index]; - ids[index] = ids[ids_count - 1]; - ids_count--; - return id; -} - -#define MDBX_CHECK(x) \ - do { \ - const int rc = (x); \ - if (rc != MDBX_SUCCESS) { \ - printf("Error [%d] %s in %s at %s:%d\n", rc, mdbx_strerror(rc), #x, \ - __FILE__, __LINE__); \ - exit(EXIT_FAILURE); \ - } \ - } while (0) - -static void db_connect() { - MDBX_dbi dbi_session; - MDBX_dbi dbi_session_id; - MDBX_dbi dbi_event; - MDBX_dbi dbi_ip; - - MDBX_CHECK(mdbx_env_create(&env)); - MDBX_CHECK( - mdbx_env_set_mapsize(env, REC_COUNT * sizeof(session_data_t) * 10)); - MDBX_CHECK(mdbx_env_set_maxdbs(env, 30)); - MDBX_CHECK(mdbx_env_open(env, opt_db_path, - MDBX_CREATE | MDBX_WRITEMAP | MDBX_MAPASYNC | - MDBX_NOSYNC | MDBX_LIFORECLAIM, - 0664)); - MDBX_txn *txn; - - // transaction init - MDBX_CHECK(mdbx_txn_begin(env, NULL, 0, &txn)); - // open database in read-write mode - MDBX_CHECK(mdbx_dbi_open(txn, "session", MDBX_CREATE, &dbi_session)); - MDBX_CHECK(mdbx_dbi_open(txn, "session_id", MDBX_CREATE, &dbi_session_id)); - MDBX_CHECK(mdbx_dbi_open(txn, "event", MDBX_CREATE, &dbi_event)); - MDBX_CHECK(mdbx_dbi_open(txn, "ip", MDBX_CREATE, &dbi_ip)); - // transaction commit - MDBX_CHECK(mdbx_txn_commit(txn)); - printf("Connection open\n"); -} - -static void create_record(int64_t record_id) { - MDBX_dbi dbi_session; - MDBX_dbi dbi_session_id; - MDBX_dbi dbi_event; - MDBX_dbi dbi_ip; - event_data_t event; - MDBX_txn *txn; - session_data_t data; - // transaction init - snprintf(data.session_id1, sizeof(data.session_id1), - "prefix%02ld_%02ld.fill.fill.fill.fill.fill.fill;%ld", - record_id % 3 + 1, record_id % 9 + 1, record_id); - snprintf(data.session_id2, sizeof(data.session_id2), - "dprefix%ld;%ld.fill.fill.;suffix", record_id, - record_id % 1000000000 + 99999); - snprintf(data.ip, sizeof(data.ip), "%d.%d.%d.%d", - IP_PRINTF_ARG_HOST(record_id & 0xFFFFFFFF)); - event.obj_id = record_id; - event.event_type = 1; - - MDBX_val _session_id1_rec = {data.session_id1, strlen(data.session_id1)}; - MDBX_val _session_id2_rec = {data.session_id2, strlen(data.session_id2)}; - MDBX_val _ip_rec = {data.ip, strlen(data.ip)}; - MDBX_val _obj_id_rec = {&record_id, sizeof(record_id)}; - MDBX_val _data_rec = {&data, offsetof(session_data_t, fill) + - (rand() % sizeof(data.fill))}; - MDBX_val _event_rec = {&event, sizeof(event)}; - - uint64_t start = getClockUs(); - MDBX_CHECK(mdbx_txn_begin(env, NULL, 0, &txn)); - MDBX_CHECK(mdbx_dbi_open(txn, "session", MDBX_CREATE, &dbi_session)); - MDBX_CHECK(mdbx_dbi_open(txn, "session_id", MDBX_CREATE, &dbi_session_id)); - MDBX_CHECK(mdbx_dbi_open(txn, "event", MDBX_CREATE, &dbi_event)); - MDBX_CHECK(mdbx_dbi_open(txn, "ip", MDBX_CREATE, &dbi_ip)); - MDBX_CHECK(mdbx_put(txn, dbi_session, &_obj_id_rec, &_data_rec, - MDBX_NOOVERWRITE | MDBX_NODUPDATA)); - MDBX_CHECK(mdbx_put(txn, dbi_session_id, &_session_id1_rec, &_obj_id_rec, - MDBX_NOOVERWRITE | MDBX_NODUPDATA)); - MDBX_CHECK(mdbx_put(txn, dbi_session_id, &_session_id2_rec, &_obj_id_rec, - MDBX_NOOVERWRITE | MDBX_NODUPDATA)); - MDBX_CHECK(mdbx_put(txn, dbi_ip, &_ip_rec, &_obj_id_rec, 0)); - MDBX_CHECK(mdbx_put(txn, dbi_event, &_event_rec, &_obj_id_rec, 0)); - MDBX_CHECK(mdbx_txn_commit(txn)); - - mdbx_data_size += (_data_rec.iov_len + _obj_id_rec.iov_len * 4); - mdbx_key_size += - (_obj_id_rec.iov_len + _session_id1_rec.iov_len + - _session_id2_rec.iov_len + _ip_rec.iov_len + _event_rec.iov_len); - - // transaction commit - mdbx_add_count++; - mdbx_add_time += (getClockUs() - start); -} - -static void delete_record(int64_t record_id) { - MDBX_dbi dbi_session; - MDBX_dbi dbi_session_id; - MDBX_dbi dbi_event; - MDBX_dbi dbi_ip; - event_data_t event; - MDBX_txn *txn; - - // transaction init - uint64_t start = getClockUs(); - MDBX_CHECK(mdbx_txn_begin(env, NULL, 0, &txn)); - // open database in read-write mode - MDBX_CHECK(mdbx_dbi_open(txn, "session", MDBX_CREATE, &dbi_session)); - MDBX_CHECK(mdbx_dbi_open(txn, "session_id", MDBX_CREATE, &dbi_session_id)); - MDBX_CHECK(mdbx_dbi_open(txn, "event", MDBX_CREATE, &dbi_event)); - MDBX_CHECK(mdbx_dbi_open(txn, "ip", MDBX_CREATE, &dbi_ip)); - // put data - MDBX_val _obj_id_rec = {&record_id, sizeof(record_id)}; - MDBX_val _data_rec; - // get data - MDBX_CHECK(mdbx_get(txn, dbi_session, &_obj_id_rec, &_data_rec)); - session_data_t *data = (session_data_t *)_data_rec.iov_base; - - MDBX_val _session_id1_rec = {data->session_id1, strlen(data->session_id1)}; - MDBX_val _session_id2_rec = {data->session_id2, strlen(data->session_id2)}; - MDBX_val _ip_rec = {data->ip, strlen(data->ip)}; - MDBX_CHECK(mdbx_del(txn, dbi_session_id, &_session_id1_rec, NULL)); - MDBX_CHECK(mdbx_del(txn, dbi_session_id, &_session_id2_rec, NULL)); - MDBX_CHECK(mdbx_del(txn, dbi_ip, &_ip_rec, NULL)); - event.obj_id = record_id; - event.event_type = 1; - MDBX_val _event_rec = {&event, sizeof(event)}; - MDBX_CHECK(mdbx_del(txn, dbi_event, &_event_rec, NULL)); - MDBX_CHECK(mdbx_del(txn, dbi_session, &_obj_id_rec, NULL)); - - mdbx_data_size -= (_data_rec.iov_len + _obj_id_rec.iov_len * 4); - mdbx_key_size -= - (_obj_id_rec.iov_len + _session_id1_rec.iov_len + - _session_id2_rec.iov_len + _ip_rec.iov_len + _event_rec.iov_len); - - // transaction commit - MDBX_CHECK(mdbx_txn_commit(txn)); - mdbx_del_count++; - mdbx_del_time += (getClockUs() - start); -} - -static void db_disconnect() { - mdbx_env_close(env); - printf("Connection closed\n"); -} - -static void get_db_stat(const char *db, int64_t *ms_branch_pages, - int64_t *ms_leaf_pages) { - MDBX_txn *txn; - MDBX_stat stat; - MDBX_dbi dbi; - - MDBX_CHECK(mdbx_txn_begin(env, NULL, MDBX_RDONLY, &txn)); - MDBX_CHECK(mdbx_dbi_open(txn, db, MDBX_CREATE, &dbi)); - MDBX_CHECK(mdbx_dbi_stat(txn, dbi, &stat, sizeof(stat))); - mdbx_txn_abort(txn); - printf("%15s | %15ld | %5u | %10ld | %10ld | %11ld |\n", db, - stat.ms_branch_pages, stat.ms_depth, stat.ms_entries, - stat.ms_leaf_pages, stat.ms_overflow_pages); - (*ms_branch_pages) += stat.ms_branch_pages; - (*ms_leaf_pages) += stat.ms_leaf_pages; -} - -static void periodic_stat(void) { - int64_t ms_branch_pages = 0; - int64_t ms_leaf_pages = 0; - MDBX_stat mst; - MDBX_envinfo mei; - MDBX_CHECK(mdbx_env_stat(env, &mst, sizeof(mst))); - MDBX_CHECK(mdbx_env_info(env, &mei, sizeof(mei))); - printf("Environment Info\n"); - printf(" Pagesize: %u\n", mst.ms_psize); - if (mei.mi_geo.lower != mei.mi_geo.upper) { - printf(" Dynamic datafile: %" PRIu64 "..%" PRIu64 " bytes (+%" PRIu64 - "/-%" PRIu64 "), %" PRIu64 "..%" PRIu64 " pages (+%" PRIu64 - "/-%" PRIu64 ")\n", - mei.mi_geo.lower, mei.mi_geo.upper, mei.mi_geo.grow, - mei.mi_geo.shrink, mei.mi_geo.lower / mst.ms_psize, - mei.mi_geo.upper / mst.ms_psize, mei.mi_geo.grow / mst.ms_psize, - mei.mi_geo.shrink / mst.ms_psize); - printf(" Current datafile: %" PRIu64 " bytes, %" PRIu64 " pages\n", - mei.mi_geo.current, mei.mi_geo.current / mst.ms_psize); - } else { - printf(" Fixed datafile: %" PRIu64 " bytes, %" PRIu64 " pages\n", - mei.mi_geo.current, mei.mi_geo.current / mst.ms_psize); - } - printf(" Current mapsize: %" PRIu64 " bytes, %" PRIu64 " pages \n", - mei.mi_mapsize, mei.mi_mapsize / mst.ms_psize); - printf(" Number of pages used: %" PRIu64 "\n", mei.mi_last_pgno + 1); - printf(" Last transaction ID: %" PRIu64 "\n", mei.mi_recent_txnid); - printf(" Tail transaction ID: %" PRIu64 " (%" PRIi64 ")\n", - mei.mi_latter_reader_txnid, - mei.mi_latter_reader_txnid - mei.mi_recent_txnid); - printf(" Max readers: %u\n", mei.mi_maxreaders); - printf(" Number of readers used: %u\n", mei.mi_numreaders); - - printf(" Name | ms_branch_pages | depth | entries | leaf_pages " - "| overf_pages |\n"); - get_db_stat("session", &ms_branch_pages, &ms_leaf_pages); - get_db_stat("session_id", &ms_branch_pages, &ms_leaf_pages); - get_db_stat("event", &ms_branch_pages, &ms_leaf_pages); - get_db_stat("ip", &ms_branch_pages, &ms_leaf_pages); - printf("%15s | %15ld | %5s | %10s | %10ld | %11s |\n", "", ms_branch_pages, - "", "", ms_leaf_pages, ""); - - static int64_t prev_add_count; - static int64_t prev_del_count; - static uint64_t prev_add_time; - static uint64_t prev_del_time; - static int64_t t = -1; - if (t > 0) { - int64_t delta = (getClockUs() - t); - printf( - "CPS: add %ld, delete %ld, items processed - %ldK data=%ldK key=%ldK\n", - (mdbx_add_count - prev_add_count) * 1000000 / delta, - (mdbx_del_count - prev_del_count) * 1000000 / delta, obj_id / 1024, - mdbx_data_size / 1024, mdbx_key_size / 1024); - printf("usage data=%ld%%", ((mdbx_data_size + mdbx_key_size) * 100) / - ((ms_leaf_pages + ms_branch_pages) * 4096)); - if (prev_add_time != mdbx_add_time) { - printf(" Add : %ld c/s", (mdbx_add_count - prev_add_count) * 1000000 / - (mdbx_add_time - prev_add_time)); - } - if (prev_del_time != mdbx_del_time) { - printf(" Del : %ld c/s", (mdbx_del_count - prev_del_count) * 1000000 / - (mdbx_del_time - prev_del_time)); - } - if (mdbx_add_time) { - printf(" tAdd : %ld c/s", mdbx_add_count * 1000000 / mdbx_add_time); - } - if (mdbx_del_time) { - printf(" tDel : %ld c/s", mdbx_del_count * 1000000 / mdbx_del_time); - } - puts(""); - } - t = getClockUs(); - prev_add_count = mdbx_add_count; - prev_del_count = mdbx_del_count; - prev_add_time = mdbx_add_time; - prev_del_time = mdbx_del_time; -} - -// static void periodic_add_rec() { -// for (int i = 0; i < 10240; i++) { -// if (ids_count <= REC_COUNT) { -// int64_t id = obj_id++; -// create_record(id); -// add_id_to_pool(id); -// } -// if (ids_count > REC_COUNT) { -// int64_t id = get_id_from_pool(); -// delete_record(id); -// } -// } -// periodic_stat(); -//} - -int main(int argc, char **argv) { - (void)argc; - (void)argv; - - char filename[PATH_MAX]; - int i; - - mkdir(opt_db_path, 0775); - - strcpy(filename, opt_db_path); - strcat(filename, "/mdbx.dat"); - remove(filename); - - strcpy(filename, opt_db_path); - strcat(filename, "/mdbx.lck"); - remove(filename); - - puts("Open DB..."); - db_connect(); - puts("Create data..."); - int64_t t = getClockUs(); - for (i = 0; i < REC_COUNT; i++) { - int64_t id = obj_id++; - create_record(id); - add_id_to_pool(id); - if (i % 1000 == 0) { - int64_t now = getClockUs(); - if ((now - t) > 1000000L) { - periodic_stat(); - t = now; - } - } - } - periodic_stat(); - while (1) { - int i; - for (i = 0; i < 1000; i++) { - int64_t id = obj_id++; - create_record(id); - add_id_to_pool(id); - id = get_id_from_pool(); - delete_record(id); - } - // for (i = 0; i < 50; i++) { - // int64_t id = obj_id++; - // create_record(id); - // add_id_to_pool(id); - // } - // int64_t id = obj_id++; - // create_record(id); - // add_id_to_pool(id); - int64_t now = getClockUs(); - if ((now - t) > 10000000L) { - periodic_stat(); - t = now; - } - } - db_disconnect(); - return 0; -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/test.cc b/plugins/Dbx_mdbx/src/libmdbx/test/test.cc deleted file mode 100644 index 3750af525f..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/test.cc +++ /dev/null @@ -1,495 +0,0 @@ -/* - * Copyright 2017-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#include "test.h" - -const char *testcase2str(const actor_testcase testcase) { - switch (testcase) { - default: - assert(false); - return "?!"; - case ac_none: - return "none"; - case ac_hill: - return "hill"; - case ac_deadread: - return "deadread"; - case ac_deadwrite: - return "deadwrite"; - case ac_jitter: - return "jitter"; - case ac_try: - return "try"; - } -} - -const char *status2str(actor_status status) { - switch (status) { - default: - assert(false); - return "?!"; - case as_debuging: - return "debuging"; - case as_running: - return "running"; - case as_successful: - return "successful"; - case as_killed: - return "killed"; - case as_failed: - return "failed"; - } -} - -const char *keygencase2str(const keygen_case keycase) { - switch (keycase) { - default: - assert(false); - return "?!"; - case kc_random: - return "random"; - case kc_dashes: - return "dashes"; - case kc_custom: - return "custom"; - } -} - -//----------------------------------------------------------------------------- - -static void mdbx_logger(int type, const char *function, int line, - const char *msg, va_list args) { - logging::loglevel level = logging::info; - if (type & MDBX_DBG_EXTRA) - level = logging::extra; - if (type & MDBX_DBG_TRACE) - level = logging::trace; - if (type & MDBX_DBG_PRINT) - level = logging::verbose; - - if (!function) - function = "unknown"; - if (type & MDBX_DBG_ASSERT) { - log_error("mdbx: assertion failure: %s, %d", function, line); - level = logging::failure; - } - - if (logging::output( - level, - strncmp(function, "mdbx_", 5) == 0 ? "%s: " : "mdbx: %s: ", function)) - logging::feed(msg, args); - if (type & MDBX_DBG_ASSERT) - abort(); -} - -int testcase::oom_callback(MDBX_env *env, int pid, mdbx_tid_t tid, uint64_t txn, - unsigned gap, int retry) { - - testcase *self = (testcase *)mdbx_env_get_userctx(env); - - if (retry == 0) - log_notice("oom_callback: waitfor pid %u, thread %" PRIuPTR - ", txn #%" PRIu64 ", gap %d", - pid, (size_t)tid, txn, gap); - - if (self->should_continue(true)) { - osal_yield(); - if (retry > 0) - osal_udelay(retry * 100); - return 0 /* always retry */; - } - - return -1; -} - -void testcase::db_prepare() { - log_trace(">> db_prepare"); - assert(!db_guard); - - int mdbx_dbg_opts = MDBX_DBG_ASSERT | MDBX_DBG_JITTER | MDBX_DBG_DUMP; - if (config.params.loglevel <= logging::trace) - mdbx_dbg_opts |= MDBX_DBG_TRACE; - if (config.params.loglevel <= logging::verbose) - mdbx_dbg_opts |= MDBX_DBG_PRINT; - int rc = mdbx_setup_debug(mdbx_dbg_opts, mdbx_logger); - log_trace("set mdbx debug-opts: 0x%02x", rc); - - MDBX_env *env = nullptr; - rc = mdbx_env_create(&env); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_env_create()", rc); - - assert(env != nullptr); - db_guard.reset(env); - - rc = mdbx_env_set_userctx(env, this); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_env_set_userctx()", rc); - - rc = mdbx_env_set_maxreaders(env, config.params.max_readers); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_env_set_maxreaders()", rc); - - rc = mdbx_env_set_maxdbs(env, config.params.max_tables); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_env_set_maxdbs()", rc); - - rc = mdbx_env_set_oomfunc(env, testcase::oom_callback); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_env_set_oomfunc()", rc); - - rc = mdbx_env_set_mapsize(env, (size_t)config.params.size); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_env_set_mapsize()", rc); - - log_trace("<< db_prepare"); -} - -void testcase::db_open() { - log_trace(">> db_open"); - - if (!db_guard) - db_prepare(); - int rc = mdbx_env_open(db_guard.get(), config.params.pathname_db.c_str(), - (unsigned)config.params.mode_flags, 0640); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_env_open()", rc); - - log_trace("<< db_open"); -} - -void testcase::db_close() { - log_trace(">> db_close"); - cursor_guard.reset(); - txn_guard.reset(); - db_guard.reset(); - log_trace("<< db_close"); -} - -void testcase::txn_begin(bool readonly, unsigned flags) { - assert((flags & MDBX_RDONLY) == 0); - log_trace(">> txn_begin(%s, 0x%04X)", readonly ? "read-only" : "read-write", - flags); - assert(!txn_guard); - - MDBX_txn *txn = nullptr; - int rc = mdbx_txn_begin(db_guard.get(), nullptr, - readonly ? flags | MDBX_RDONLY : flags, &txn); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_txn_begin()", rc); - txn_guard.reset(txn); - - log_trace("<< txn_begin(%s, 0x%04X)", readonly ? "read-only" : "read-write", - flags); -} - -void testcase::txn_end(bool abort) { - log_trace(">> txn_end(%s)", abort ? "abort" : "commit"); - assert(txn_guard); - - MDBX_txn *txn = txn_guard.release(); - if (abort) { - int rc = mdbx_txn_abort(txn); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_txn_abort()", rc); - } else { - txn_inject_writefault(txn); - int rc = mdbx_txn_commit(txn); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_txn_commit()", rc); - } - - log_trace("<< txn_end(%s)", abort ? "abort" : "commit"); -} - -void testcase::txn_restart(bool abort, bool readonly, unsigned flags) { - if (txn_guard) - txn_end(abort); - txn_begin(readonly, flags); -} - -void testcase::txn_inject_writefault(void) { - if (txn_guard) - txn_inject_writefault(txn_guard.get()); -} - -void testcase::txn_inject_writefault(MDBX_txn *txn) { - if (config.params.inject_writefaultn && txn) { - if (config.params.inject_writefaultn <= nops_completed && - (mdbx_txn_flags(txn) & MDBX_RDONLY) == 0) { - log_info("== txn_inject_writefault(): got %u nops or more, inject FAULT", - config.params.inject_writefaultn); - log_flush(); -#if defined(_WIN32) || defined(_WIN64) || defined(_WINDOWS) - TerminateProcess(GetCurrentProcess(), 42); -#else - raise(SIGKILL); -#endif - } - } -} - -bool testcase::wait4start() { - if (config.wait4id) { - log_trace(">> wait4start(%u)", config.wait4id); - assert(!global::singlemode); - int rc = osal_waitfor(config.wait4id); - if (rc) { - log_trace("<< wait4start(%u), failed %s", config.wait4id, - test_strerror(rc)); - return false; - } - } else { - log_trace("== skip wait4start: not needed"); - } - - if (config.params.delaystart) { - int rc = osal_delay(config.params.delaystart); - if (rc) { - log_trace("<< delay(%u), failed %s", config.params.delaystart, - test_strerror(rc)); - return false; - } - } else { - log_trace("== skip delay: not needed"); - } - - return true; -} - -void testcase::kick_progress(bool active) const { - chrono::time now = chrono::now_motonic(); - if (active) { - static int last_point = -1; - int point = (now.fixedpoint >> 29) & 3; - if (point != last_point) { - last.progress_timestamp = now; - fprintf(stderr, "%c\b", "-\\|/"[last_point = point]); - fflush(stderr); - } - } else if (now.fixedpoint - last.progress_timestamp.fixedpoint > - chrono::from_seconds(2).fixedpoint) { - last.progress_timestamp = now; - fprintf(stderr, "%c\b", "@*"[now.utc & 1]); - fflush(stderr); - } -} - -void testcase::report(size_t nops_done) { - assert(nops_done > 0); - if (!nops_done) - return; - - nops_completed += nops_done; - log_verbose("== complete +%" PRIuPTR " iteration, total %" PRIuPTR " done", - nops_done, nops_completed); - - if (global::config::progress_indicator) - kick_progress(true); - - if (config.signal_nops && !signalled && - config.signal_nops <= nops_completed) { - log_trace(">> signal(n-ops %" PRIuPTR ")", nops_completed); - if (!global::singlemode) - osal_broadcast(config.actor_id); - signalled = true; - log_trace("<< signal(n-ops %" PRIuPTR ")", nops_completed); - } -} - -void testcase::signal() { - if (!signalled) { - log_trace(">> signal(forced)"); - if (!global::singlemode) - osal_broadcast(config.actor_id); - signalled = true; - log_trace("<< signal(forced)"); - } -} - -bool testcase::setup() { - db_prepare(); - if (!wait4start()) - return false; - - start_timestamp = chrono::now_motonic(); - return true; -} - -bool testcase::teardown() { - log_trace(">> testcase::teardown"); - signal(); - db_close(); - log_trace("<< testcase::teardown"); - return true; -} - -bool testcase::should_continue(bool check_timeout_only) const { - bool result = true; - - if (config.params.test_duration) { - chrono::time since; - since.fixedpoint = - chrono::now_motonic().fixedpoint - start_timestamp.fixedpoint; - if (since.seconds() >= config.params.test_duration) - result = false; - } - - if (!check_timeout_only && config.params.test_nops && - nops_completed >= config.params.test_nops) - result = false; - - if (result && global::config::progress_indicator) - kick_progress(false); - - return result; -} - -void testcase::fetch_canary() { - mdbx_canary canary_now; - log_trace(">> fetch_canary"); - - int rc = mdbx_canary_get(txn_guard.get(), &canary_now); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_canary_get()", rc); - - if (canary_now.v < last.canary.v) - failure("fetch_canary: %" PRIu64 "(canary-now.v) < %" PRIu64 - "(canary-last.v)", - canary_now.v, last.canary.v); - if (canary_now.y < last.canary.y) - failure("fetch_canary: %" PRIu64 "(canary-now.y) < %" PRIu64 - "(canary-last.y)", - canary_now.y, last.canary.y); - - last.canary = canary_now; - log_trace("<< fetch_canary: db-sequence %" PRIu64 - ", db-sequence.txnid %" PRIu64, - last.canary.y, last.canary.v); -} - -void testcase::update_canary(uint64_t increment) { - mdbx_canary canary_now = last.canary; - - log_trace(">> update_canary: sequence %" PRIu64 " += %" PRIu64, canary_now.y, - increment); - canary_now.y += increment; - - int rc = mdbx_canary_put(txn_guard.get(), &canary_now); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_canary_put()", rc); - - log_trace("<< update_canary: sequence = %" PRIu64, canary_now.y); -} - -MDBX_dbi testcase::db_table_open(bool create) { - log_trace(">> testcase::db_table_create"); - - char tablename_buf[16]; - const char *tablename = nullptr; - if (config.space_id) { - int rc = snprintf(tablename_buf, sizeof(tablename_buf), "TBL%04u", - config.space_id); - if (rc < 4 || rc >= (int)sizeof(tablename_buf) - 1) - failure("snprintf(tablename): %d", rc); - tablename = tablename_buf; - } - log_verbose("use %s table", tablename ? tablename : "MAINDB"); - - MDBX_dbi handle = 0; - int rc = mdbx_dbi_open(txn_guard.get(), tablename, - (create ? MDBX_CREATE : 0) | config.params.table_flags, - &handle); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_dbi_open()", rc); - - log_trace("<< testcase::db_table_create, handle %u", handle); - return handle; -} - -void testcase::db_table_drop(MDBX_dbi handle) { - log_trace(">> testcase::db_table_drop, handle %u", handle); - - if (config.params.drop_table) { - int rc = mdbx_drop(txn_guard.get(), handle, true); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_drop()", rc); - log_trace("<< testcase::db_table_drop"); - } else { - log_trace("<< testcase::db_table_drop: not needed"); - } -} - -void testcase::db_table_close(MDBX_dbi handle) { - log_trace(">> testcase::db_table_close, handle %u", handle); - assert(!txn_guard); - int rc = mdbx_dbi_close(db_guard.get(), handle); - if (unlikely(rc != MDBX_SUCCESS)) - failure_perror("mdbx_dbi_close()", rc); - log_trace("<< testcase::db_table_close"); -} - -//----------------------------------------------------------------------------- - -bool test_execute(const actor_config &config) { - const mdbx_pid_t pid = osal_getpid(); - - if (global::singlemode) { - logging::setup(format("single_%s", testcase2str(config.testcase))); - } else { - logging::setup((logging::loglevel)config.params.loglevel, - format("child_%u.%u", config.actor_id, config.space_id)); - log_trace(">> wait4barrier"); - osal_wait4barrier(); - log_trace("<< wait4barrier"); - } - - try { - std::unique_ptr<testcase> test; - switch (config.testcase) { - case ac_hill: - test.reset(new testcase_hill(config, pid)); - break; - case ac_deadread: - test.reset(new testcase_deadread(config, pid)); - break; - case ac_deadwrite: - test.reset(new testcase_deadwrite(config, pid)); - break; - case ac_jitter: - test.reset(new testcase_jitter(config, pid)); - break; - case ac_try: - test.reset(new testcase_try(config, pid)); - break; - default: - test.reset(new testcase(config, pid)); - break; - } - - if (!test->setup()) - log_notice("test setup failed"); - else if (!test->run()) - log_notice("test failed"); - else if (!test->teardown()) - log_notice("test teardown failed"); - else { - log_info("test successed"); - return true; - } - } catch (const std::exception &pipets) { - failure("***** Exception: %s *****", pipets.what()); - } - return false; -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/test.h b/plugins/Dbx_mdbx/src/libmdbx/test/test.h deleted file mode 100644 index ef1c4caa47..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/test.h +++ /dev/null @@ -1,205 +0,0 @@ -/* - * Copyright 2017-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#pragma once - -#include "base.h" -#include "chrono.h" -#include "config.h" -#include "keygen.h" -#include "log.h" -#include "osal.h" -#include "utils.h" - -bool test_execute(const actor_config &config); -std::string thunk_param(const actor_config &config); -void testcase_setup(const char *casename, actor_params ¶ms, - unsigned &last_space_id); -void configure_actor(unsigned &last_space_id, const actor_testcase testcase, - const char *space_id_cstr, const actor_params ¶ms); -void keycase_setup(const char *casename, actor_params ¶ms); - -namespace global { - -extern const char thunk_param_prefix[]; -extern std::vector<actor_config> actors; -extern std::unordered_map<unsigned, actor_config *> events; -extern std::unordered_map<mdbx_pid_t, actor_config *> pid2actor; -extern std::set<std::string> databases; -extern unsigned nactors; -extern chrono::time start_motonic; -extern chrono::time deadline_motonic; -extern bool singlemode; - -namespace config { -extern unsigned timeout_duration_seconds; -extern bool dump_config; -extern bool cleanup_before; -extern bool cleanup_after; -extern bool failfast; -extern bool progress_indicator; -} /* namespace config */ - -} /* namespace global */ - -//----------------------------------------------------------------------------- - -struct db_deleter : public std::unary_function<void, MDBX_env *> { - void operator()(MDBX_env *env) const { mdbx_env_close(env); } -}; - -struct txn_deleter : public std::unary_function<void, MDBX_txn *> { - void operator()(MDBX_txn *txn) const { - int rc = mdbx_txn_abort(txn); - if (rc) - log_trouble(mdbx_func_, "mdbx_txn_abort()", rc); - } -}; - -struct cursor_deleter : public std::unary_function<void, MDBX_cursor *> { - void operator()(MDBX_cursor *cursor) const { mdbx_cursor_close(cursor); } -}; - -typedef std::unique_ptr<MDBX_env, db_deleter> scoped_db_guard; -typedef std::unique_ptr<MDBX_txn, txn_deleter> scoped_txn_guard; -typedef std::unique_ptr<MDBX_cursor, cursor_deleter> scoped_cursor_guard; - -//----------------------------------------------------------------------------- - -class testcase { -protected: - const actor_config &config; - const mdbx_pid_t pid; - - scoped_db_guard db_guard; - scoped_txn_guard txn_guard; - scoped_cursor_guard cursor_guard; - bool signalled; - - size_t nops_completed; - chrono::time start_timestamp; - keygen::buffer key; - keygen::buffer data; - keygen::maker keyvalue_maker; - - struct { - mdbx_canary canary; - mutable chrono::time progress_timestamp; - } last; - - static int oom_callback(MDBX_env *env, int pid, mdbx_tid_t tid, uint64_t txn, - unsigned gap, int retry); - - void db_prepare(); - void db_open(); - void db_close(); - void txn_begin(bool readonly, unsigned flags = 0); - void txn_end(bool abort); - void txn_restart(bool abort, bool readonly, unsigned flags = 0); - void txn_inject_writefault(void); - void txn_inject_writefault(MDBX_txn *txn); - void fetch_canary(); - void update_canary(uint64_t increment); - void kick_progress(bool active) const; - - MDBX_dbi db_table_open(bool create); - void db_table_drop(MDBX_dbi handle); - void db_table_close(MDBX_dbi handle); - - bool wait4start(); - void report(size_t nops_done); - void signal(); - bool should_continue(bool check_timeout_only = false) const; - - void generate_pair(const keygen::serial_t serial, keygen::buffer &out_key, - keygen::buffer &out_value, keygen::serial_t data_age = 0) { - keyvalue_maker.pair(serial, out_key, out_value, data_age); - } - - void generate_pair(const keygen::serial_t serial, - keygen::serial_t data_age = 0) { - generate_pair(serial, key, data, data_age); - } - - bool mode_readonly() const { - return (config.params.mode_flags & MDBX_RDONLY) ? true : false; - } - -public: - testcase(const actor_config &config, const mdbx_pid_t pid) - : config(config), pid(pid), signalled(false), nops_completed(0) { - start_timestamp.reset(); - memset(&last, 0, sizeof(last)); - } - - virtual bool setup(); - virtual bool run() { return true; } - virtual bool teardown(); - virtual ~testcase() {} -}; - -class testcase_hill : public testcase { - typedef testcase inherited; - -public: - testcase_hill(const actor_config &config, const mdbx_pid_t pid) - : testcase(config, pid) {} - bool setup(); - bool run(); - bool teardown(); -}; - -class testcase_deadread : public testcase { - typedef testcase inherited; - -public: - testcase_deadread(const actor_config &config, const mdbx_pid_t pid) - : testcase(config, pid) {} - bool setup(); - bool run(); - bool teardown(); -}; - -class testcase_deadwrite : public testcase { - typedef testcase inherited; - -public: - testcase_deadwrite(const actor_config &config, const mdbx_pid_t pid) - : testcase(config, pid) {} - bool setup(); - bool run(); - bool teardown(); -}; - -class testcase_jitter : public testcase { - typedef testcase inherited; - -public: - testcase_jitter(const actor_config &config, const mdbx_pid_t pid) - : testcase(config, pid) {} - bool setup(); - bool run(); - bool teardown(); -}; - -class testcase_try : public testcase { - typedef testcase inherited; - -public: - testcase_try(const actor_config &config, const mdbx_pid_t pid) - : testcase(config, pid) {} - bool setup(); - bool run(); - bool teardown(); -}; diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/test.vcxproj b/plugins/Dbx_mdbx/src/libmdbx/test/test.vcxproj deleted file mode 100644 index 3ee13cf8cf..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/test.vcxproj +++ /dev/null @@ -1,202 +0,0 @@ -<?xml version="1.0" encoding="utf-8"?> -<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> - 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return true; -} - -bool testcase_try::teardown() { - log_trace(">> teardown"); - cursor_guard.release(); - txn_guard.release(); - db_guard.release(); - return inherited::teardown(); -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/utils.cc b/plugins/Dbx_mdbx/src/libmdbx/test/utils.cc deleted file mode 100644 index 0855c7eef3..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/utils.cc +++ /dev/null @@ -1,349 +0,0 @@ -/* - * Copyright 2017-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#include "test.h" -#include <float.h> -#if defined(HAVE_IEEE754_H) || __has_include(<ieee754.h>) -#include <ieee754.h> -#endif - -std::string format(const char *fmt, ...) { - va_list ap, ones; - va_start(ap, fmt); - va_copy(ones, ap); -#ifdef _MSC_VER - int needed = _vscprintf(fmt, ap); -#else - int needed = vsnprintf(nullptr, 0, fmt, ap); -#endif - assert(needed >= 0); - va_end(ap); - std::string result; - result.reserve((size_t)needed + 1); - result.resize((size_t)needed, '\0'); - int actual = vsnprintf((char *)result.data(), result.capacity(), fmt, ones); - assert(actual == needed); - (void)actual; - va_end(ones); - return result; -} - -std::string data2hex(const void *ptr, size_t bytes, simple_checksum &checksum) { - std::string result; - if (bytes > 0) { - const uint8_t *data = (const uint8_t *)ptr; - checksum.push(data, bytes); - result.reserve(bytes * 2); - const uint8_t *const end = data + bytes; - do { - char h = *data >> 4; - char l = *data & 15; - result.push_back((l < 10) ? l + '0' : l - 10 + 'a'); - result.push_back((h < 10) ? h + '0' : h - 10 + 'a'); - } while (++data < end); - } - assert(result.size() == bytes * 2); - return result; -} - -bool hex2data(const char *hex_begin, const char *hex_end, void *ptr, - size_t bytes, simple_checksum &checksum) { - if (bytes * 2 != (size_t)(hex_end - hex_begin)) - return false; - - uint8_t *data = (uint8_t *)ptr; - for (const char *hex = hex_begin; hex != hex_end; hex += 2, ++data) { - unsigned l = hex[0], h = hex[1]; - - if (l >= '0' && l <= '9') - l = l - '0'; - else if (l >= 'A' && l <= 'F') - l = l - 'A' + 10; - else if (l >= 'a' && l <= 'f') - l = l - 'a' + 10; - else - return false; - - if (h >= '0' && h <= '9') - h = h - '0'; - else if (h >= 'A' && h <= 'F') - h = h - 'A' + 10; - else if (h >= 'a' && h <= 'f') - h = h - 'a' + 10; - else - return false; - - uint32_t c = l + (h << 4); - checksum.push(c); - *data = (uint8_t)c; - } - return true; -} - -//----------------------------------------------------------------------------- - -/* TODO: replace my 'libmera' fomr t1ha. */ -uint64_t entropy_ticks(void) { -#if defined(EMSCRIPTEN) - return (uint64_t)emscripten_get_now(); -#endif /* EMSCRIPTEN */ - -#if defined(__APPLE__) || defined(__MACH__) - return mach_absolute_time(); -#endif /* defined(__APPLE__) || defined(__MACH__) */ - -#if defined(__sun__) || defined(__sun) - return gethrtime(); -#endif /* __sun__ */ - -#if defined(__GNUC__) || defined(__clang__) - -#if defined(__ia64__) - uint64_t ticks; - __asm __volatile("mov %0=ar.itc" : "=r"(ticks)); - return ticks; -#elif defined(__hppa__) - uint64_t ticks; - __asm __volatile("mfctl 16, %0" : "=r"(ticks)); - return ticks; -#elif defined(__s390__) - uint64_t ticks; - __asm __volatile("stck 0(%0)" : : "a"(&(ticks)) : "memory", "cc"); - return ticks; -#elif defined(__alpha__) - uint64_t ticks; - __asm __volatile("rpcc %0" : "=r"(ticks)); - return ticks; -#elif defined(__sparc__) || defined(__sparc) || defined(__sparc64__) || \ - defined(__sparc64) || defined(__sparc_v8plus__) || \ - defined(__sparc_v8plus) || defined(__sparc_v8plusa__) || \ - defined(__sparc_v8plusa) || defined(__sparc_v9__) || defined(__sparc_v9) - - union { - uint64_t u64; - struct { -#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ - uint32_t h, l; -#else - uint32_t l, h; -#endif - } u32; - } cycles; - -#if defined(__sparc_v8plus__) || defined(__sparc_v8plusa__) || \ - defined(__sparc_v9__) || defined(__sparc_v8plus) || \ - defined(__sparc_v8plusa) || defined(__sparc_v9) - -#if UINTPTR_MAX > 0xffffFFFFul || ULONG_MAX > 0xffffFFFFul || \ - defined(__sparc64__) || defined(__sparc64) - __asm __volatile("rd %%tick, %0" : "=r"(cycles.u64)); -#else - __asm __volatile("rd %%tick, %1; srlx %1, 32, %0" - : "=r"(cycles.u32.h), "=r"(cycles.u32.l)); -#endif /* __sparc64__ */ - -#else - __asm __volatile(".byte 0x83, 0x41, 0x00, 0x00; mov %%g1, %0" - : "=r"(cycles.u64) - : - : "%g1"); -#endif /* __sparc8plus__ || __sparc_v9__ */ - return cycles.u64; - -#elif (defined(__powerpc64__) || defined(__ppc64__) || defined(__ppc64) || \ - defined(__powerpc64)) - uint64_t ticks; - __asm __volatile("mfspr %0, 268" : "=r"(ticks)); - return ticks; -#elif (defined(__powerpc__) || defined(__ppc__) || defined(__powerpc) || \ - defined(__ppc)) -#if UINTPTR_MAX > 0xffffFFFFul || ULONG_MAX > 0xffffFFFFul - uint64_t ticks; - __asm __volatile("mftb %0" : "=r"(ticks)); - *now = ticks; -#else - uint64_t ticks; - uint32_t low, high_before, high_after; - __asm __volatile("mftbu %0; mftb %1; mftbu %2" - : "=r"(high_before), "=r"(low), "=r"(high_after)); - ticks = (uint64_t)high_after << 32; - ticks |= low & /* zeroes if high part has changed */ - ~(high_before - high_after); -#endif -#elif defined(__aarch64__) || (defined(__ARM_ARCH) && __ARM_ARCH > 7) - uint64_t virtual_timer; - __asm __volatile("mrs %0, cntvct_el0" : "=r"(virtual_timer)); - return virtual_timer; -#elif defined(__ARM_ARCH) && __ARM_ARCH > 5 && __ARM_ARCH < 8 - unsigned long pmccntr; - __asm __volatile("mrc p15, 0, %0, c9, c13, 0" : "=r"(pmccntr)); - return pmccntr; -#elif defined(__mips__) || defined(__mips) || defined(_R4000) - unsigned count; - __asm __volatile("rdhwr %0, $2" : "=r"(count)); - return count; -#endif /* arch selector */ -#endif /* __GNUC__ || __clang__ */ - -#if defined(__e2k__) || defined(__ia32__) - return __rdtsc(); -#elif defined(_M_ARM) - return __rdpmccntr64(); -#elif defined(_WIN32) || defined(_WIN64) || defined(_WINDOWS) - LARGE_INTEGER PerformanceCount; - if (QueryPerformanceCounter(&PerformanceCount)) - return PerformanceCount.QuadPart; - return GetTickCount64(); -#else - struct timespec ts; -#if defined(CLOCK_MONOTONIC_COARSE) - clockid_t clock = CLOCK_MONOTONIC_COARSE; -#elif defined(CLOCK_MONOTONIC_RAW) - clockid_t clock = CLOCK_MONOTONIC_RAW; -#else - clockid_t clock = CLOCK_MONOTONIC; -#endif - int rc = clock_gettime(clock, &ts); - if (unlikely(rc)) - failure_perror("clock_gettime()", rc); - - return (((uint64_t)ts.tv_sec) << 32) + ts.tv_nsec; -#endif -} - -//----------------------------------------------------------------------------- - -static __inline uint64_t bleach64(uint64_t dirty) { - return mul_64x64_high(bswap64(dirty), UINT64_C(17048867929148541611)); -} - -static __inline uint32_t bleach32(uint32_t dirty) { - return (uint32_t)((bswap32(dirty) * UINT64_C(2175734609)) >> 32); -} - -uint64_t prng64_careless(uint64_t &state) { - state = state * UINT64_C(6364136223846793005) + 1; - return state; -} - -uint64_t prng64_white(uint64_t &state) { - state = state * UINT64_C(6364136223846793005) + UINT64_C(1442695040888963407); - return bleach64(state); -} - -uint32_t prng32(uint64_t &state) { - return (uint32_t)(prng64_careless(state) >> 32); -} - -void prng_fill(uint64_t &state, void *ptr, size_t bytes) { - while (bytes >= 4) { - *((uint32_t *)ptr) = prng32(state); - ptr = (uint32_t *)ptr + 1; - bytes -= 4; - } - - switch (bytes & 3) { - case 3: { - uint32_t u32 = prng32(state); - memcpy(ptr, &u32, 3); - } break; - case 2: - *((uint16_t *)ptr) = (uint16_t)prng32(state); - break; - case 1: - *((uint8_t *)ptr) = (uint8_t)prng32(state); - break; - case 0: - break; - } -} - -static __thread uint64_t prng_state; - -void prng_seed(uint64_t seed) { prng_state = bleach64(seed); } - -uint32_t prng32(void) { return prng32(prng_state); } - -uint64_t prng64(void) { return prng64_white(prng_state); } - -void prng_fill(void *ptr, size_t bytes) { prng_fill(prng_state, ptr, bytes); } - -uint64_t entropy_white() { return bleach64(entropy_ticks()); } - -double double_from_lower(uint64_t salt) { -#ifdef IEEE754_DOUBLE_BIAS - ieee754_double r; - r.ieee.negative = 0; - r.ieee.exponent = IEEE754_DOUBLE_BIAS; - r.ieee.mantissa0 = (unsigned)(salt >> 32); - r.ieee.mantissa1 = (unsigned)salt; - return r.d; -#else - const uint64_t top = (UINT64_C(1) << DBL_MANT_DIG) - 1; - const double scale = 1.0 / (double)top; - return (salt & top) * scale; -#endif -} - -double double_from_upper(uint64_t salt) { -#ifdef IEEE754_DOUBLE_BIAS - ieee754_double r; - r.ieee.negative = 0; - r.ieee.exponent = IEEE754_DOUBLE_BIAS; - salt >>= 64 - DBL_MANT_DIG; - r.ieee.mantissa0 = (unsigned)(salt >> 32); - r.ieee.mantissa1 = (unsigned)salt; - return r.d; -#else - const uint64_t top = (UINT64_C(1) << DBL_MANT_DIG) - 1; - const double scale = 1.0 / (double)top; - return (salt >> (64 - DBL_MANT_DIG)) * scale; -#endif -} - -bool flipcoin() { return bleach32((uint32_t)entropy_ticks()) & 1; } - -bool jitter(unsigned probability_percent) { - const uint32_t top = UINT32_MAX - UINT32_MAX % 100; - uint32_t dice, edge = (top) / 100 * probability_percent; - do - dice = bleach32((uint32_t)entropy_ticks()); - while (dice >= top); - return dice < edge; -} - -void jitter_delay(bool extra) { - unsigned dice = entropy_white() & 3; - if (dice == 0) { - log_trace("== jitter.no-delay"); - } else { - log_trace(">> jitter.delay: dice %u", dice); - do { - cpu_relax(); - memory_barrier(); - cpu_relax(); - if (dice > 1) { - osal_yield(); - cpu_relax(); - if (dice > 2) { - unsigned us = entropy_white() & - (extra ? 0xfffff /* 1.05 s */ : 0x3ff /* 1 ms */); - log_trace("== jitter.delay: %0.6f", us / 1000000.0); - osal_udelay(us); - } - } - } while (flipcoin()); - log_trace("<< jitter.delay: dice %u", dice); - } -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/utils.h b/plugins/Dbx_mdbx/src/libmdbx/test/utils.h deleted file mode 100644 index 5d62909fd5..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/test/utils.h +++ /dev/null @@ -1,337 +0,0 @@ -/* - * Copyright 2017-2018 Leonid Yuriev <leo@yuriev.ru> - * and other libmdbx authors: please see AUTHORS file. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#pragma once -#include "base.h" - -#if !defined(__BYTE_ORDER__) || !defined(__ORDER_LITTLE_ENDIAN__) || \ - !defined(__ORDER_BIG_ENDIAN__) -#error __BYTE_ORDER__ should be defined. -#endif - -#if __BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__ && \ - __BYTE_ORDER__ != __ORDER_BIG_ENDIAN__ -#error Unsupported byte order. -#endif - -#if __GNUC_PREREQ(4, 4) || defined(__clang__) -#define bswap64(v) __builtin_bswap64(v) -#define bswap32(v) __builtin_bswap32(v) -#if __GNUC_PREREQ(4, 8) || __has_builtin(__builtin_bswap16) -#define bswap16(v) __builtin_bswap16(v) -#endif - -#elif defined(_MSC_VER) - -#if _MSC_FULL_VER < 190024215 -#pragma message( \ - "It is recommended to use Visual Studio 2015 (MSC 19.0) or newer.") -#endif - -#define bswap64(v) _byteswap_uint64(v) -#define bswap32(v) _byteswap_ulong(v) -#define bswap16(v) _byteswap_ushort(v) -#define rot64(v, s) _rotr64(v, s) -#define rot32(v, s) _rotr(v, s) - -#if defined(_M_ARM64) || defined(_M_X64) || defined(_M_IA64) -#pragma intrinsic(_umul128) -#define mul_64x64_128(a, b, ph) _umul128(a, b, ph) -#pragma intrinsic(__umulh) -#define mul_64x64_high(a, b) __umulh(a, b) -#endif - -#if defined(_M_IX86) -#pragma intrinsic(__emulu) -#define mul_32x32_64(a, b) __emulu(a, b) -#elif defined(_M_ARM) -#define mul_32x32_64(a, b) _arm_umull(a, b) -#endif - -#endif /* compiler */ - -#ifndef bswap64 -#ifdef __bswap_64 -#define bswap64(v) __bswap_64(v) -#else -static __inline uint64_t bswap64(uint64_t v) { - return v << 56 | v >> 56 | ((v << 40) & UINT64_C(0x00ff000000000000)) | - ((v << 24) & UINT64_C(0x0000ff0000000000)) | - ((v << 8) & UINT64_C(0x000000ff00000000)) | - ((v >> 8) & UINT64_C(0x00000000ff0000000)) | - ((v >> 24) & UINT64_C(0x0000000000ff0000)) | - ((v >> 40) & UINT64_C(0x000000000000ff00)); -} -#endif -#endif /* bswap64 */ - -#ifndef bswap32 -#ifdef __bswap_32 -#define bswap32(v) __bswap_32(v) -#else -static __inline uint32_t bswap32(uint32_t v) { - return v << 24 | v >> 24 | ((v << 8) & UINT32_C(0x00ff0000)) | - ((v >> 8) & UINT32_C(0x0000ff00)); -} -#endif -#endif /* bswap32 */ - -#ifndef bswap16 -#ifdef __bswap_16 -#define bswap16(v) __bswap_16(v) -#else -static __inline uint16_t bswap16(uint16_t v) { return v << 8 | v >> 8; } -#endif -#endif /* bswap16 */ - -#define is_byteorder_le() (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) -#define is_byteorder_be() (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) - -#ifndef htole16 -#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ -#define htobe16(v) bswap16(v) -#define htole16(v) (v) -#define be16toh(v) bswap16(v) -#define le16toh(v) (v) -#else -#define htobe16(v) (v) -#define htole16(v) bswap16(v) -#define be16toh(v) (v) -#define le16toh(v) bswap16(v) -#endif -#endif /* htole16 */ - -#ifndef htole32 -#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ -#define htobe32(v) bswap32(v) -#define htole32(v) (v) -#define be32toh(v) bswap32(v) -#define le32toh(v) (v) -#else -#define htobe32(v) (v) -#define htole32(v) bswap32(v) -#define be32toh(v) (v) -#define le32toh(v) bswap32(v) -#endif -#endif /* htole32 */ - -#ifndef htole64 -#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ -#define htobe64(v) bswap64(v) -#define htole64(v) (v) -#define be64toh(v) bswap64(v) -#define le64toh(v) (v) -#else -#define htobe64(v) (v) -#define htole64(v) bswap_64(v) -#define be64toh(v) (v) -#define le64toh(v) bswap_64(v) -#endif -#endif /* htole64 */ - -namespace unaligned { - -template <typename T> static __inline T load(const void *ptr) { -#if defined(_MSC_VER) && \ - (defined(_M_ARM64) || defined(_M_X64) || defined(_M_IA64)) - return *(const T __unaligned *)ptr; -#elif UNALIGNED_OK - return *(const T *)ptr; -#else - T local; -#if defined(__GNUC__) || defined(__clang__) - __builtin_memcpy(&local, (const T *)ptr, sizeof(T)); -#else - memcpy(&local, (const T *)ptr, sizeof(T)); -#endif /* __GNUC__ || __clang__ */ - return local; -#endif /* UNALIGNED_OK */ -} - -template <typename T> static __inline void store(void *ptr, const T &value) { -#if defined(_MSC_VER) && \ - (defined(_M_ARM64) || defined(_M_X64) || defined(_M_IA64)) - *((T __unaligned *)ptr) = value; -#elif UNALIGNED_OK - *(volatile T *)ptr = value; -#else -#if defined(__GNUC__) || defined(__clang__) - __builtin_memcpy(ptr, &value, sizeof(T)); -#else - memcpy(ptr, &value, sizeof(T)); -#endif /* __GNUC__ || __clang__ */ -#endif /* UNALIGNED_OK */ -} - -} /* namespace unaligned */ - -//----------------------------------------------------------------------------- - -#ifndef rot64 -static __inline uint64_t rot64(uint64_t v, unsigned s) { - return (v >> s) | (v << (64 - s)); -} -#endif /* rot64 */ - -#ifndef mul_32x32_64 -static __inline uint64_t mul_32x32_64(uint32_t a, uint32_t b) { - return a * (uint64_t)b; -} -#endif /* mul_32x32_64 */ - -#ifndef mul_64x64_128 - -static __inline unsigned add_with_carry(uint64_t *sum, uint64_t addend) { - *sum += addend; - return (*sum < addend) ? 1u : 0u; -} - -static __inline uint64_t mul_64x64_128(uint64_t a, uint64_t b, uint64_t *h) { -#if defined(__SIZEOF_INT128__) || \ - (defined(_INTEGRAL_MAX_BITS) && _INTEGRAL_MAX_BITS >= 128) - __uint128_t r = (__uint128_t)a * (__uint128_t)b; - /* modern GCC could nicely optimize this */ - *h = r >> 64; - return r; -#elif defined(mul_64x64_high) - *h = mul_64x64_high(a, b); - return a * b; -#else - /* performs 64x64 to 128 bit multiplication */ - uint64_t ll = mul_32x32_64((uint32_t)a, (uint32_t)b); - uint64_t lh = mul_32x32_64(a >> 32, (uint32_t)b); - uint64_t hl = mul_32x32_64((uint32_t)a, b >> 32); - *h = mul_32x32_64(a >> 32, b >> 32) + (lh >> 32) + (hl >> 32) + - add_with_carry(&ll, lh << 32) + add_with_carry(&ll, hl << 32); - return ll; -#endif -} - -#endif /* mul_64x64_128() */ - -#ifndef mul_64x64_high -static __inline uint64_t mul_64x64_high(uint64_t a, uint64_t b) { - uint64_t h; - mul_64x64_128(a, b, &h); - return h; -} -#endif /* mul_64x64_high */ - -static __inline bool is_power2(size_t x) { return (x & (x - 1)) == 0; } - -static __inline size_t roundup2(size_t value, size_t granularity) { - assert(is_power2(granularity)); - return (value + granularity - 1) & ~(granularity - 1); -} - -//----------------------------------------------------------------------------- - -static __inline void memory_barrier(void) { -#if __has_extension(c_atomic) || __has_extension(cxx_atomic) - __c11_atomic_thread_fence(__ATOMIC_SEQ_CST); -#elif defined(__ATOMIC_SEQ_CST) - __atomic_thread_fence(__ATOMIC_SEQ_CST); -#elif defined(__clang__) || defined(__GNUC__) - __sync_synchronize(); -#elif defined(_MSC_VER) - MemoryBarrier(); -#elif defined(__INTEL_COMPILER) /* LY: Intel Compiler may mimic GCC and MSC */ -#if defined(__ia64__) || defined(__ia64) || defined(_M_IA64) - __mf(); -#elif defined(__ia32__) - _mm_mfence(); -#else -#error "Unknown target for Intel Compiler, please report to us." -#endif -#elif defined(__SUNPRO_C) || defined(__sun) || defined(sun) - __machine_rw_barrier(); -#elif (defined(_HPUX_SOURCE) || defined(__hpux) || defined(__HP_aCC)) && \ - (defined(HP_IA64) || defined(__ia64)) - _Asm_mf(); -#elif defined(_AIX) || defined(__ppc__) || defined(__powerpc__) || \ - defined(__ppc64__) || defined(__powerpc64__) - __lwsync(); -#else -#error "Could not guess the kind of compiler, please report to us." -#endif -} - -static __inline void cpu_relax() { -#if defined(__ia32__) - _mm_pause(); -#elif defined(_WIN32) || defined(_WIN64) || defined(_WINDOWS) || \ - defined(YieldProcessor) - YieldProcessor(); -#else -/* nope */ -#endif -} - -//----------------------------------------------------------------------------- - -struct simple_checksum { - uint64_t value; - - simple_checksum() : value(0) {} - - void push(uint32_t data) { - value += data * UINT64_C(9386433910765580089) + 1; - value ^= value >> 41; - } - - void push(uint64_t data) { - push((uint32_t)data); - push((uint32_t)(data >> 32)); - } - - void push(bool data) { push(data ? UINT32_C(0x780E) : UINT32_C(0xFA18E)); } - - void push(const void *ptr, size_t bytes) { - const uint8_t *data = (const uint8_t *)ptr; - for (size_t i = 0; i < bytes; ++i) - push((uint32_t)data[i]); - } - - void push(const double &data) { push(&data, sizeof(double)); } - - void push(const char *cstr) { push(cstr, strlen(cstr)); } - - void push(const std::string &str) { push(str.data(), str.size()); } - -#if defined(_WIN32) || defined(_WIN64) || defined(_WINDOWS) - void push(const HANDLE &handle) { push(&handle, sizeof(handle)); } -#endif /* _WINDOWS */ -}; - -std::string data2hex(const void *ptr, size_t bytes, simple_checksum &checksum); -bool hex2data(const char *hex_begin, const char *hex_end, void *ptr, - size_t bytes, simple_checksum &checksum); - -std::string format(const char *fmt, ...); - -uint64_t entropy_ticks(void); -uint64_t entropy_white(void); -uint64_t prng64_careless(uint64_t &state); -uint64_t prng64_white(uint64_t &state); -uint32_t prng32(uint64_t &state); -void prng_fill(uint64_t &state, void *ptr, size_t bytes); - -void prng_seed(uint64_t seed); -uint32_t prng32(void); -uint64_t prng64(void); -void prng_fill(void *ptr, size_t bytes); - -bool flipcoin(); -bool jitter(unsigned probability_percent); -void jitter_delay(bool extra = false); diff --git a/plugins/Dbx_mdbx/src/libmdbx/tutorial/CMakeLists.txt b/plugins/Dbx_mdbx/src/libmdbx/tutorial/CMakeLists.txt deleted file mode 100644 index 196f1f48d7..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/tutorial/CMakeLists.txt +++ /dev/null @@ -1,7 +0,0 @@ -set(TARGET mdbx_tutorial) -project(${TARGET}) - -add_executable(${TARGET} sample-mdbx.c) - -target_link_libraries(${TARGET} mdbx) - diff --git a/plugins/Dbx_mdbx/src/libmdbx/tutorial/README.md b/plugins/Dbx_mdbx/src/libmdbx/tutorial/README.md deleted file mode 100644 index b5218da304..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/tutorial/README.md +++ /dev/null @@ -1 +0,0 @@ -This directory is just a placeholder for now. Tutorial and examples will be added later. diff --git a/plugins/Dbx_mdbx/src/libmdbx/tutorial/sample-bdb.txt b/plugins/Dbx_mdbx/src/libmdbx/tutorial/sample-bdb.txt deleted file mode 100644 index 1015d06460..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/tutorial/sample-bdb.txt +++ /dev/null @@ -1,77 +0,0 @@ -/* sample-bdb.txt - BerkeleyDB toy/sample - * - * Do a line-by-line comparison of this and sample-mdb.txt - */ - -/* - * Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru>. - * Copyright 2012-2015 Howard Chu, Symas Corp. - * Copyright 2015,2016 Peter-Service R&D LLC. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#include <stdio.h> -#include <string.h> -#include <db.h> - -int main(int argc,char * argv[]) -{ - int rc; - DB_ENV *env; - DB *dbi; - DBT key, data; - DB_TXN *txn; - DBC *cursor; - char sval[32], kval[32]; - - /* Note: Most error checking omitted for simplicity */ - -#define FLAGS (DB_INIT_LOCK|DB_INIT_LOG|DB_INIT_TXN|DB_INIT_MPOOL|DB_CREATE|DB_THREAD) - rc = db_env_create(&env, 0); - rc = env->open(env, "./testdb", FLAGS, 0664); - rc = db_create(&dbi, env, 0); - rc = env->txn_begin(env, NULL, &txn, 0); - rc = dbi->open(dbi, txn, "test.bdb", NULL, DB_BTREE, DB_CREATE, 0664); - - memset(&key, 0, sizeof(DBT)); - memset(&data, 0, sizeof(DBT)); - key.size = sizeof(int); - key.data = sval; - data.size = sizeof(sval); - data.data = sval; - - sprintf(sval, "%03x %d foo bar", 32, 3141592); - rc = dbi->put(dbi, txn, &key, &data, 0); - rc = txn->commit(txn, 0); - if (rc) { - fprintf(stderr, "txn->commit: (%d) %s\n", rc, db_strerror(rc)); - goto leave; - } - rc = env->txn_begin(env, NULL, &txn, 0); - rc = dbi->cursor(dbi, txn, &cursor, 0); - key.flags = DB_DBT_USERMEM; - key.data = kval; - key.ulen = sizeof(kval); - data.flags = DB_DBT_USERMEM; - data.data = sval; - data.ulen = sizeof(sval); - while ((rc = cursor->c_get(cursor, &key, &data, DB_NEXT)) == 0) { - printf("key: %p %.*s, data: %p %.*s\n", - key.data, (int) key.size, (char *) key.data, - data.data, (int) data.size, (char *) data.data); - } - rc = cursor->c_close(cursor); - rc = txn->abort(txn); -leave: - rc = dbi->close(dbi, 0); - rc = env->close(env, 0); - return rc; -} diff --git a/plugins/Dbx_mdbx/src/libmdbx/tutorial/sample-mdbx.c b/plugins/Dbx_mdbx/src/libmdbx/tutorial/sample-mdbx.c deleted file mode 100644 index aaafbc31cf..0000000000 --- a/plugins/Dbx_mdbx/src/libmdbx/tutorial/sample-mdbx.c +++ /dev/null @@ -1,112 +0,0 @@ -/* sample-mdb.txt - MDB toy/sample - * - * Do a line-by-line comparison of this and sample-bdb.txt - */ - -/* - * Copyright 2017 Ilya Shipitsin <chipitsine@gmail.com>. - * Copyright 2015-2018 Leonid Yuriev <leo@yuriev.ru>. - * Copyright 2012-2015 Howard Chu, Symas Corp. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted only as authorized by the OpenLDAP - * Public License. - * - * A copy of this license is available in the file LICENSE in the - * top-level directory of the distribution or, alternatively, at - * <http://www.OpenLDAP.org/license.html>. - */ - -#include "mdbx.h" -#include <stdio.h> -#include <stdlib.h> - -int main(int argc, char *argv[]) { - (void)argc; - (void)argv; - - int rc; - MDBX_env *env = NULL; - MDBX_dbi dbi = 0; - MDBX_val key, data; - MDBX_txn *txn = NULL; - MDBX_cursor *cursor = NULL; - char sval[32]; - - rc = mdbx_env_create(&env); - if (rc != MDBX_SUCCESS) { - fprintf(stderr, "mdbx_env_create: (%d) %s\n", rc, mdbx_strerror(rc)); - goto bailout; - } - rc = mdbx_env_open(env, "./example-db", - MDBX_NOSUBDIR | MDBX_COALESCE | MDBX_LIFORECLAIM, 0664); - if (rc != MDBX_SUCCESS) { - fprintf(stderr, "mdbx_env_open: (%d) %s\n", rc, mdbx_strerror(rc)); - goto bailout; - } - - rc = mdbx_txn_begin(env, NULL, 0, &txn); - if (rc != MDBX_SUCCESS) { - fprintf(stderr, "mdbx_txn_begin: (%d) %s\n", rc, mdbx_strerror(rc)); - goto bailout; - } - rc = mdbx_dbi_open(txn, NULL, 0, &dbi); - if (rc != MDBX_SUCCESS) { - fprintf(stderr, "mdbx_dbi_open: (%d) %s\n", rc, mdbx_strerror(rc)); - goto bailout; - } - - key.iov_len = sizeof(int); - key.iov_base = sval; - data.iov_len = sizeof(sval); - data.iov_base = sval; - - sprintf(sval, "%03x %d foo bar", 32, 3141592); - rc = mdbx_put(txn, dbi, &key, &data, 0); - if (rc != MDBX_SUCCESS) { - fprintf(stderr, "mdbx_put: (%d) %s\n", rc, mdbx_strerror(rc)); - goto bailout; - } - rc = mdbx_txn_commit(txn); - if (rc) { - fprintf(stderr, "mdbx_txn_commit: (%d) %s\n", rc, mdbx_strerror(rc)); - goto bailout; - } - txn = NULL; - - rc = mdbx_txn_begin(env, NULL, MDBX_RDONLY, &txn); - if (rc != MDBX_SUCCESS) { - fprintf(stderr, "mdbx_txn_begin: (%d) %s\n", rc, mdbx_strerror(rc)); - goto bailout; - } - rc = mdbx_cursor_open(txn, dbi, &cursor); - if (rc != MDBX_SUCCESS) { - fprintf(stderr, "mdbx_cursor_open: (%d) %s\n", rc, mdbx_strerror(rc)); - goto bailout; - } - - int found = 0; - while ((rc = mdbx_cursor_get(cursor, &key, &data, MDBX_NEXT)) == 0) { - printf("key: %p %.*s, data: %p %.*s\n", key.iov_base, (int)key.iov_len, - (char *)key.iov_base, data.iov_base, (int)data.iov_len, - (char *)data.iov_base); - found += 1; - } - if (rc != MDBX_NOTFOUND || found == 0) { - fprintf(stderr, "mdbx_cursor_get: (%d) %s\n", rc, mdbx_strerror(rc)); - goto bailout; - } else { - rc = MDBX_SUCCESS; - } -bailout: - if (cursor) - mdbx_cursor_close(cursor); - if (txn) - mdbx_txn_abort(txn); - if (dbi) - mdbx_dbi_close(env, dbi); - if (env) - mdbx_env_close(env); - return (rc != MDBX_SUCCESS) ? EXIT_FAILURE : EXIT_SUCCESS; -} diff --git a/plugins/Dbx_mdbx/src/stdafx.h b/plugins/Dbx_mdbx/src/stdafx.h index 49f182f5cf..2ee27c924a 100644 --- a/plugins/Dbx_mdbx/src/stdafx.h +++ b/plugins/Dbx_mdbx/src/stdafx.h @@ -48,7 +48,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. #include <m_netlib.h>
#include <m_gui.h>
-#include "libmdbx/mdbx.h"
+#include "../../Libs/libmdbx/src/mdbx.h"
#ifndef thread_local
# define thread_local __declspec(thread)
|