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/**
* @file
*
* @brief Wait at 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.com/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <pthread.h>
#include <errno.h>
#include <rtems/system.h>
#include <rtems/posix/spinlockimpl.h>
/**
* This directive allows a thread to wait at a spinlock.
*
* @param[in] spinlock is spinlock id
*
* @return This method returns 0 if there was not an
* error. Otherwise, a status code is returned indicating the
* source of the error.
*/
int pthread_spin_lock(
pthread_spinlock_t *spinlock
)
{
POSIX_Spinlock_Control *the_spinlock = NULL;
Objects_Locations location;
CORE_spinlock_Status status;
if ( !spinlock )
return EINVAL;
the_spinlock = _POSIX_Spinlock_Get( spinlock, &location );
switch ( location ) {
case OBJECTS_LOCAL:
status = _CORE_spinlock_Wait( &the_spinlock->Spinlock, true, 0 );
_Objects_Put( &the_spinlock->Object );
return _POSIX_Spinlock_Translate_core_spinlock_return_code( status );
#if defined(RTEMS_MULTIPROCESSING)
case OBJECTS_REMOTE:
#endif
case OBJECTS_ERROR:
break;
}
return EINVAL;
}
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