125 lines
2.7 KiB
C
125 lines
2.7 KiB
C
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/*
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* Cross Platform Thread/Mutex abstraction
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* Copyright(C) 2007 Michael Jerris
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so.
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*
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* This work is provided under this license on an "as is" basis, without warranty of any kind,
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* either expressed or implied, including, without limitation, warranties that the covered code
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* is free of defects, merchantable, fit for a particular purpose or non-infringing. The entire
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* risk as to the quality and performance of the covered code is with you. Should any covered
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* code prove defective in any respect, you (not the initial developer or any other contributor)
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* assume the cost of any necessary servicing, repair or correction. This disclaimer of warranty
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* constitutes an essential part of this license. No use of any covered code is authorized hereunder
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* except under this disclaimer.
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*
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*/
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#define _XOPEN_SOURCE 600
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#include <stdlib.h>
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#include "zap_threadmutex.h"
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#ifdef WIN32
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#define _WIN32_WINNT 0x0400
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#include <windows.h>
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struct mutex {
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CRITICAL_SECTION mutex;
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};
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#else
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#include <pthread.h>
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struct mutex {
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pthread_mutex_t mutex;
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};
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#endif
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mutex_status_t zap_mutex_create(mutex_t **mutex)
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{
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mutex_status_t status = MUTEX_FAILURE;
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#ifndef WIN32
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pthread_mutexattr_t attr;
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#endif
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mutex_t *check = NULL;
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check = (mutex_t *)malloc(sizeof(**mutex));
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if (!check)
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goto done;
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#ifdef WIN32
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InitializeCriticalSection(&check->mutex);
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#else
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if (pthread_mutexattr_init(&attr))
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goto done;
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if (pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE))
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goto fail;
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if (pthread_mutex_init(&check->mutex, &attr))
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goto fail;
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goto success;
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fail:
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pthread_mutexattr_destroy(&attr);
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goto done;
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success:
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#endif
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*mutex = check;
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status = MUTEX_SUCCESS;
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done:
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return status;
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}
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mutex_status_t zap_mutex_destroy(mutex_t *mutex)
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{
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#ifdef WIN32
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DeleteCriticalSection(&mutex->mutex);
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#else
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if (pthread_mutex_destroy(&mutex->mutex))
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return MUTEX_FAILURE;
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#endif
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free(mutex);
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return MUTEX_SUCCESS;
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}
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mutex_status_t zap_mutex_lock(mutex_t *mutex)
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{
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#ifdef WIN32
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EnterCriticalSection(&mutex->mutex);
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#else
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if (pthread_mutex_lock(&mutex->mutex))
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return MUTEX_FAILURE;
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#endif
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return MUTEX_SUCCESS;
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}
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mutex_status_t zap_mutex_trylock(mutex_t *mutex)
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{
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#ifdef WIN32
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if (!TryEnterCriticalSection(&mutex->mutex))
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return MUTEX_FAILURE;
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#else
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if (pthread_mutex_trylock(&mutex->mutex))
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return MUTEX_FAILURE;
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#endif
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return MUTEX_SUCCESS;
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}
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mutex_status_t zap_mutex_unlock(mutex_t *mutex)
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{
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#ifdef WIN32
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LeaveCriticalSection(&mutex->mutex);
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#else
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if (pthread_mutex_unlock(&mutex->mutex))
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return MUTEX_FAILURE;
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#endif
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return MUTEX_SUCCESS;
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}
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