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/*
* Barrier Manager -- Wait at a Barrier
*
* 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 <rtems/system.h>
#include <rtems/rtems/status.h>
#include <rtems/rtems/support.h>
#include <rtems/rtems/barrier.h>
#include <rtems/score/thread.h>
#include <rtems/score/threadq.h>
/*
* rtems_barrier_wait
*
* This directive allows a thread to wait at a barrier.
*
* Input parameters:
* id - barrier id
* timeout - number of ticks to wait (0 means wait forever)
*
* Output parameters:
* RTEMS_SUCCESSFUL - if successful
* error code - if unsuccessful
*/
rtems_status_code rtems_barrier_wait(
rtems_id id,
rtems_interval timeout
)
{
Barrier_Control *the_barrier;
Objects_Locations location;
the_barrier = _Barrier_Get( id, &location );
switch ( location ) {
case OBJECTS_REMOTE:
case OBJECTS_ERROR:
return RTEMS_INVALID_ID;
case OBJECTS_LOCAL:
_CORE_barrier_Wait(
&the_barrier->Barrier,
id,
TRUE,
timeout,
NULL
);
_Thread_Enable_dispatch();
return _Barrier_Translate_core_barrier_return_code(
_Thread_Executing->Wait.return_code );
}
return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */
}
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