sqlite3_usleep_windows.go raw

   1  // Copyright (C) 2018 G.J.R. Timmer <gjr.timmer@gmail.com>.
   2  //
   3  // Use of this source code is governed by an MIT-style
   4  // license that can be found in the LICENSE file.
   5  
   6  //go:build cgo
   7  // +build cgo
   8  
   9  package sqlite3
  10  
  11  // usleep is a function available on *nix based systems.
  12  // This function is not present in Windows.
  13  // Windows has a sleep function but this works with seconds
  14  // and not with microseconds as usleep.
  15  //
  16  // This code should improve performance on windows because
  17  // without the presence of usleep SQLite waits 1 second.
  18  //
  19  // Source:  https://github.com/php/php-src/blob/PHP-5.0/win32/time.c
  20  // License: https://github.com/php/php-src/blob/PHP-5.0/LICENSE
  21  // Details: https://stackoverflow.com/questions/5801813/c-usleep-is-obsolete-workarounds-for-windows-mingw?utm_medium=organic&utm_source=google_rich_qa&utm_campaign=google_rich_qa
  22  
  23  /*
  24  #include <windows.h>
  25  
  26  void usleep(__int64 usec)
  27  {
  28      HANDLE timer;
  29      LARGE_INTEGER ft;
  30  
  31      // Convert to 100 nanosecond interval, negative value indicates relative time
  32      ft.QuadPart = -(10*usec);
  33  
  34      timer = CreateWaitableTimer(NULL, TRUE, NULL);
  35      SetWaitableTimer(timer, &ft, 0, NULL, NULL, 0);
  36      WaitForSingleObject(timer, INFINITE);
  37      CloseHandle(timer);
  38  }
  39  */
  40  import "C"
  41  
  42  // EOF
  43