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/*
* POSIX Spinlock Manager -- Destroy a Spinlock
*
* 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.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/spinlock.h>
/*
* pthread_spin_destroy
*
* This directive allows a thread to delete a spinlock specified by
* the spinlock id. The spinlock is freed back to the inactive
* spinlock chain.
*
* Input parameters:
* spinlock - spinlock id
*
* Output parameters:
* 0 - if successful
* error code - if unsuccessful
*/
int pthread_spin_destroy(
pthread_spinlock_t *spinlock
)
{
POSIX_Spinlock_Control *the_spinlock = NULL;
Objects_Locations location;
if ( !spinlock )
return EINVAL;
the_spinlock = _POSIX_Spinlock_Get( spinlock, &location );
switch ( location ) {
case OBJECTS_LOCAL:
if ( _CORE_spinlock_Is_busy( &the_spinlock->Spinlock ) ) {
_Thread_Enable_dispatch();
return EBUSY;
}
_Objects_Close( &_POSIX_Spinlock_Information, &the_spinlock->Object );
_POSIX_Spinlock_Free( the_spinlock );
_Thread_Enable_dispatch();
return 0;
#if defined(RTEMS_MULTIPROCESSING)
case OBJECTS_REMOTE:
#endif
case OBJECTS_ERROR:
break;
}
return EINVAL;
}
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