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| | /*
* Copyright (C) 2009 Andrzej K. Haczewski <ahaczewski@gmail.com>
*
* DISCLAIMER: The implementation is Git-specific, it is subset of original
* Pthreads API, without lots of other features that Git doesn't use.
* Git also makes sure that the passed arguments are valid, so there's
* no need for double-checking.
*/
#include "../../git-compat-util.h"
#include "pthread.h"
#include <errno.h>
#include <limits.h>
static unsigned __stdcall win32_start_routine(void *arg)
{
pthread_t *thread = arg;
thread->tid = GetCurrentThreadId();
thread->arg = thread->start_routine(thread->arg);
return 0;
}
int pthread_create(pthread_t *thread, const void *unused,
void *(*start_routine)(void*), void *arg)
{
thread->arg = arg;
thread->start_routine = start_routine;
thread->handle = (HANDLE)
_beginthreadex(NULL, 0, win32_start_routine, thread, 0, NULL);
if (!thread->handle)
return errno;
else
return 0;
}
int win32_pthread_join(pthread_t *thread, void **value_ptr)
{
DWORD result = WaitForSingleObject(thread->handle, INFINITE);
switch (result) {
case WAIT_OBJECT_0:
if (value_ptr)
*value_ptr = thread->arg;
return 0;
case WAIT_ABANDONED:
return EINVAL;
default:
return err_win_to_posix(GetLastError());
}
}
pthread_t pthread_self(void)
{
pthread_t t = { NULL };
t.tid = GetCurrentThreadId();
return t;
}
/* Adapted from libav's compat/w32pthreads.h. */
int pthread_once(pthread_once_t *once_control, void (*init_routine)(void))
{
BOOL pending = FALSE;
int ret = 0;
if (!InitOnceBeginInitialize(once_control, 0, &pending, NULL)) {
ret = err_win_to_posix(GetLastError());
} else if (pending) {
init_routine();
if (!InitOnceComplete(once_control, 0, NULL))
ret = err_win_to_posix(GetLastError());
}
/* POSIX doesn't allow pthread_once() to return EINTR */
return ret == EINTR ? EIO : ret;
}
|