blob: 99f971ab17b31d06d1b01d9db44c3eb64e10de07 (
plain) (
tree)
|
|
/*
* POSIX RWLock Manager -- Release a lock held on a RWLock Instance
*
* COPYRIGHT (c) 1989-2006.
* 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.com/license/LICENSE.
*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <pthread.h>
#include <errno.h>
#include <rtems/system.h>
#include <rtems/posix/rwlock.h>
/*
* pthread_rwlock_unlock
*
* This directive attempts to release a lock on an RWLock.
*
* Input parameters:
* rwlock - pointer to rwlock id
*
* Output parameters:
* 0 - if successful
* error code - if unsuccessful
*/
int pthread_rwlock_unlock(
pthread_rwlock_t *rwlock
)
{
POSIX_RWLock_Control *the_rwlock;
Objects_Locations location;
if ( !rwlock )
return EINVAL;
the_rwlock = _POSIX_RWLock_Get( rwlock, &location );
switch ( location ) {
case OBJECTS_REMOTE:
case OBJECTS_ERROR:
return EINVAL;
case OBJECTS_LOCAL:
/* XXX */
_Thread_Enable_dispatch();
return 0;
}
return POSIX_BOTTOM_REACHED();
}
|