/**
* @file
*
* @brief Wait For The Barrier
* @ingroup ScoreBarrier
*/
/*
* 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.org/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/score/corebarrierimpl.h>
#include <rtems/score/isrlevel.h>
#include <rtems/score/statesimpl.h>
#include <rtems/score/threadqimpl.h>
void _CORE_barrier_Wait(
CORE_barrier_Control *the_barrier,
Thread_Control *executing,
Objects_Id id,
bool wait,
Watchdog_Interval timeout,
CORE_barrier_API_mp_support_callout api_barrier_mp_support
)
{
ISR_lock_Context lock_context;
executing->Wait.return_code = CORE_BARRIER_STATUS_SUCCESSFUL;
_Thread_queue_Acquire( &the_barrier->Wait_queue, &lock_context );
the_barrier->number_of_waiting_threads++;
if ( _CORE_barrier_Is_automatic( &the_barrier->Attributes ) ) {
if ( the_barrier->number_of_waiting_threads ==
the_barrier->Attributes.maximum_count) {
executing->Wait.return_code = CORE_BARRIER_STATUS_AUTOMATICALLY_RELEASED;
_Thread_queue_Release( &the_barrier->Wait_queue, &lock_context );
_CORE_barrier_Release( the_barrier, id, api_barrier_mp_support );
return;
}
}
executing->Wait.id = id;
_Thread_queue_Enqueue_critical(
&the_barrier->Wait_queue.Queue,
the_barrier->Wait_queue.operations,
executing,
STATES_WAITING_FOR_BARRIER,
timeout,
CORE_BARRIER_TIMEOUT,
&lock_context
);
}