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/**
* @file
*
* @brief Initializing and Destroying 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>
/*
* 11.3.2 Initializing and Destroying a Mutex, P1003.1c/Draft 10, p. 87
*/
int pthread_mutex_destroy(
pthread_mutex_t *mutex
)
{
POSIX_Mutex_Control *the_mutex;
Thread_queue_Context queue_context;
int eno;
_Objects_Allocator_lock();
the_mutex = _POSIX_Mutex_Get( mutex, &queue_context );
if ( the_mutex != NULL ) {
_CORE_mutex_Acquire_critical( &the_mutex->Mutex, &queue_context );
/*
* XXX: There is an error for the mutex being locked
* or being in use by a condition variable.
*/
if ( !_CORE_mutex_Is_locked( &the_mutex->Mutex ) ) {
_Objects_Close( &_POSIX_Mutex_Information, &the_mutex->Object );
_CORE_mutex_Release( &the_mutex->Mutex, &queue_context );
_CORE_mutex_Destroy( &the_mutex->Mutex );
_POSIX_Mutex_Free( the_mutex );
eno = 0;
} else {
_CORE_mutex_Release( &the_mutex->Mutex, &queue_context );
eno = EBUSY;
}
} else {
eno = EINVAL;
}
_Objects_Allocator_unlock();
return eno;
}
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