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[windows] Implement pthread_mutex for Windows #257
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Original file line number | Diff line number | Diff line change |
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/* | ||
* Check: a unit test framework for C | ||
* Copyright (C) 2020 Wander Lairson Costa | ||
* | ||
* This library is free software; you can redistribute it and/or | ||
* modify it under the terms of the GNU Lesser General Public | ||
* License as published by the Free Software Foundation; either | ||
* version 2.1 of the License, or (at your option) any later version. | ||
* | ||
* This library is distributed in the hope that it will be useful, | ||
* but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
* Lesser General Public License for more details. | ||
* | ||
* You should have received a copy of the GNU Lesser General Public | ||
* License along with this library; if not, write to the | ||
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, | ||
* MA 02110-1301, USA. | ||
*/ | ||
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#include "libcompat.h" | ||
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#ifdef HAVE_WIN32_INIT_ONCE | ||
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static int mutex_init(pthread_mutex_t *mutex) | ||
{ | ||
BOOL pending; | ||
int ret = 0; | ||
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if (!InitOnceBeginInitialize(&mutex->init, 0, &pending, NULL)) | ||
return -1; | ||
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if (pending) | ||
{ | ||
mutex->mutex = CreateMutexW(NULL, FALSE, NULL); | ||
if (!mutex->mutex) | ||
ret = -1; | ||
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} | ||
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InitOnceComplete(&mutex->init, 0, NULL); | ||
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return ret; | ||
} | ||
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int pthread_mutex_init(pthread_mutex_t *mutex, pthread_mutexattr_t *attr) | ||
{ | ||
InitOnceInitialize(&mutex->init); | ||
return mutex_init(mutex); | ||
} | ||
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int pthread_mutex_destroy(pthread_mutex_t *mutex) | ||
{ | ||
return CloseHandle(mutex->mutex) ? 0 : -1; | ||
} | ||
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int pthread_mutex_lock(pthread_mutex_t *mutex) | ||
{ | ||
if (mutex_init(mutex) != 0) | ||
return -1; | ||
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return WaitForSingleObject(mutex->mutex, INFINITE) != WAIT_OBJECT_0 | ||
? -1 : 0; | ||
} | ||
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int pthread_mutex_unlock(pthread_mutex_t *mutex) | ||
{ | ||
return ReleaseMutex(mutex->mutex) ? 0 : -1; | ||
} | ||
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#endif |
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I'm not familiar with Windows' versioning. Can you explain this change?
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The One-Time Initialization functions were introduced in Windows Vista. The
WINVER
value for Windows Vista is 0x0600.