fb11e647
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reseau statique a...
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/*
* Copyright (C) 2013 Freie Universität Berlin
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup pthread
* @{
* @file
* @brief Mutual exclusion.
* @author Christian Mehlis <mehlis@inf.fu-berlin.de>
* @author René Kijewski <kijewski@inf.fu-berlin.de>
* @}
*/
#include <string.h>
#include <stddef.h>
#include "pthread.h"
int pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *mutexattr)
{
(void) mutexattr;
if (!mutex) {
return -1;
}
mutex_init(mutex);
return 0;
}
int pthread_mutex_destroy(pthread_mutex_t *mutex)
{
(void) mutex;
return 0;
}
int pthread_mutex_trylock(pthread_mutex_t *mutex)
{
if (!mutex) {
return -1;
}
/* mutex_trylock() returns 1 on success, and 0 otherwise. */
/* We want the reverse. */
return 1 - mutex_trylock(mutex);
}
int pthread_mutex_lock(pthread_mutex_t *mutex)
{
if (!mutex) {
return -1;
}
mutex_lock(mutex);
return 0;
}
int pthread_mutex_timedlock(pthread_mutex_t *mutex, const struct timespec *abstime)
{
(void) mutex;
(void) abstime;
return -1; /* currently not supported */
}
int pthread_mutex_unlock(pthread_mutex_t *mutex)
{
if (!mutex) {
return -1;
}
mutex_unlock(mutex);
return 0;
}
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