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/**
* @file
*
* @brief Wait at a Barrier
* @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/barrierimpl.h>
THREAD_QUEUE_OBJECT_ASSERT( POSIX_Barrier_Control, Barrier.Wait_queue );
/**
* This directive allows a thread to wait at a barrier.
*
* @param[in] barrier is the barrier id
*
* @retval 0 if successful
* @retval PTHREAD_BARRIER_SERIAL_THREAD if successful
* @retval error_code if unsuccessful
*/
int pthread_barrier_wait(
pthread_barrier_t *barrier
)
{
POSIX_Barrier_Control *the_barrier;
Thread_queue_Context queue_context;
Thread_Control *executing;
if ( barrier == NULL ) {
return EINVAL;
}
the_barrier = _POSIX_Barrier_Get( barrier, &queue_context );
if ( the_barrier == NULL ) {
return EINVAL;
}
executing = _Thread_Executing;
_CORE_barrier_Seize(
&the_barrier->Barrier,
executing,
true,
0,
&queue_context
);
return _POSIX_Barrier_Translate_core_barrier_return_code(
executing->Wait.return_code
);
}
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