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/**
* @file
*
* @brief Locking and Unlocking a Mutex
* @ingroup POSIXAPI
*/
/*
* COPYRIGHT (c) 1989-2007.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/posix/muteximpl.h>
/*
* 11.3.3 Locking and Unlocking a Mutex, P1003.1c/Draft 10, p. 93
*
* NOTE: P1003.4b/D8 adds pthread_mutex_timedlock(), p. 29
*/
int pthread_mutex_unlock(
pthread_mutex_t *mutex
)
{
POSIX_Mutex_Control *the_mutex;
CORE_mutex_Status status;
ISR_lock_Context lock_context;
the_mutex = _POSIX_Mutex_Get( mutex, &lock_context );
if ( the_mutex == NULL ) {
return EINVAL;
}
status = _CORE_mutex_Surrender(
&the_mutex->Mutex,
NULL,
0,
&lock_context
);
return _POSIX_Mutex_Translate_core_mutex_return_code( status );
}
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