libmdbx: switch to original amalgamated source code (v0.9.1.18)

Amalgamated source code is the recommended form for
embedding libmdbx in non-CMake build systems. This amalgamated
version contains a minimum of files, is fully ready for use,
and make impossible a number of errors.

To upgrade or switch to a different version, just unpack
to the `src` subdirectory a corresponding `libmdbx-amalgamated-X_Y_Z.zip`
at the https://github.com/erthink/libmdbx/releases.

For instance, the https://github.com/erthink/libmdbx/releases/download/v0.9.2/libmdbx-amalgamated-0_9_2.zip
for the next release.

--

Minimal changes have been made to the build configuration:

1. For use the standard `DllMain()` entry of libmdbx:
   - added the `MDBX_BUILD_SHARED_LIBRARY=1` option;
   - removed the `MDBX_CONFIG_MANUAL_TLS_CALLBACK` option;
   - deleted the `miranda.c` file containing only `DllMain()`
     with the `mdbx_dll_handle()` call, now this is done by the library itself.

2. Removed refs to extra files (that missing in the amalgamated source code):
   - for building `libmdbx.dll` only the `mdbx.h` and `mdbx.c` are used,
     but not `mdbx.c++` for a C++ API;
   - for building the `mdbx_chk`, `mdbx_load`, and `mdbx_dump` utilities
     only it own sources are used.

--

Last libmdbx changes:

 - Fixed missing installation of `mdbx.h++`.
 - Fixed use of obsolete `__noreturn`.
 - Fixed use of `yield` instruction on ARM if unsupported.
 - Added pthread workaround for buggy toolchain/cmake/buildroot.
 - Fixed use of `pthread_yield()` for non-GLIBC.
 - Fixed use of `RegGetValueA()` on Windows 2000/XP.
 - Fixed use of `GetTickCount64()` on Windows 2000/XP.
 - Fixed opening DB on a network shares (in the exclusive mode).
 - Fixed copy&paste typos.
 - Fixed minor false-positive GCC warning.

1 files changed, 0 insertions, 136 deletions

diff --git a/libs/libmdbx/src/test/chrono.cc b/libs/libmdbx/src/test/chrono.cc
deleted file mode 100644
index 43cd2a370c..0000000000
--- a/libs/libmdbx/src/test/chrono.cc
+++ /dev/null
@@ -1,136 +0,0 @@
-/*
- * Copyright 2017-2020 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 {
-
-#ifndef NSEC_PER_SEC
-#define NSEC_PER_SEC 1000000000u
-#endif /* NSEC_PER_SEC */
-
-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;
-}
-
-#ifndef USEC_PER_SEC
-#define USEC_PER_SEC 1000000u
-#endif /* USEC_PER_SEC */
-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;
-}
-
-#ifndef MSEC_PER_SEC
-#define MSEC_PER_SEC 1000u
-#endif /* MSEC_PER_SEC */
-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 */