libmdbx extracted to separate dll

1 files changed, 398 insertions, 0 deletions

diff --git a/libs/libmdbx/src/test/osal-windows.cc b/libs/libmdbx/src/test/osal-windows.cc
new file mode 100644
index 0000000000..109c835a96
--- /dev/null
+++ b/libs/libmdbx/src/test/osal-windows.cc
@@ -0,0 +1,398 @@
+/*
+ * 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);
+}