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/**
* @file
*
* @brief Destroy a Spinlock
* @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/spinlockimpl.h>
#include <errno.h>
int pthread_spin_destroy( pthread_spinlock_t *spinlock )
{
POSIX_Spinlock_Control *the_spinlock;
ISR_lock_Context lock_context;
_Objects_Allocator_lock();
the_spinlock = _POSIX_Spinlock_Get( spinlock, &lock_context );
if ( the_spinlock == NULL ) {
_Objects_Allocator_unlock();
return EINVAL;
}
_CORE_spinlock_Acquire_critical( &the_spinlock->Spinlock, &lock_context );
if ( _CORE_spinlock_Is_busy( &the_spinlock->Spinlock ) ) {
_CORE_spinlock_Release( &the_spinlock->Spinlock, &lock_context );
_Objects_Allocator_unlock();
return EBUSY;
}
_CORE_spinlock_Release( &the_spinlock->Spinlock, &lock_context );
_Objects_Close( &_POSIX_Spinlock_Information, &the_spinlock->Object );
_POSIX_Spinlock_Free( the_spinlock );
_Objects_Allocator_unlock();
return 0;
}
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