src/win32/pthread.c

   1 /*
   2  * Copyright (C) 2009-2012 the libgit2 contributors
   3  *
   4  * This file is part of libgit2, distributed under the GNU GPL v2 with
   5  * a Linking Exception. For full terms see the included COPYING file.
   6  */
   7
   8 #include "pthread.h"
   9
  10 int pthread_create(pthread_t *GIT_RESTRICT thread,
  11                                         const pthread_attr_t *GIT_RESTRICT GIT_UNUSED(attr),
  12                                         void *(*start_routine)(void*), void *GIT_RESTRICT arg)
  13 {
  14         GIT_UNUSED_ARG(attr);
  15         *thread = (pthread_t) CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)start_routine, arg, 0, NULL);
  16         return *thread ? GIT_SUCCESS : git__throw(GIT_EOSERR, "Failed to create pthread");
  17 }
  18
  19 int pthread_join(pthread_t thread, void **value_ptr)
  20 {
  21         int ret;
  22         ret = WaitForSingleObject(thread, INFINITE);
  23         if (ret && value_ptr)
  24                 GetExitCodeThread(thread, (void*) value_ptr);
  25         return -(!!ret);
  26 }
  27
  28 int pthread_mutex_init(pthread_mutex_t *GIT_RESTRICT mutex,
  29                                                 const pthread_mutexattr_t *GIT_RESTRICT GIT_UNUSED(mutexattr))
  30 {
  31         GIT_UNUSED_ARG(mutexattr);
  32         InitializeCriticalSection(mutex);
  33         return 0;
  34 }
  35
  36 int pthread_mutex_destroy(pthread_mutex_t *mutex)
  37 {
  38         DeleteCriticalSection(mutex);
  39         return 0;
  40 }
  41
  42 int pthread_mutex_lock(pthread_mutex_t *mutex)
  43 {
  44         EnterCriticalSection(mutex);
  45         return 0;
  46 }
  47
  48 int pthread_mutex_unlock(pthread_mutex_t *mutex)
  49 {
  50         LeaveCriticalSection(mutex);
  51         return 0;
  52 }
  53
  54 int pthread_num_processors_np(void)
  55 {
  56         DWORD_PTR p, s;
  57         int n = 0;
  58
  59         if (GetProcessAffinityMask(GetCurrentProcess(), &p, &s))
  60                 for (; p; p >>= 1)
  61                         n += p&1;
  62
  63         return n ? n : 1;
  64 }
  65