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/*
* SuperCore Barrier Handler
*
* DESCRIPTION:
*
* This package is part of the implementation of the SuperCore Barrier Handler.
*
* 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/score/isr.h>
#include <rtems/score/corebarrier.h>
#include <rtems/score/states.h>
#include <rtems/score/thread.h>
#include <rtems/score/threadq.h>
/*
* _CORE_barrier_Release
*
* Input parameters:
* the_barrier - the barrier to be flushed
* id - id of the object for a remote unblock
* api_barrier_mp_support - api dependent MP support actions
*
* Output parameters:
* CORE_BARRIER_STATUS_SUCCESSFUL - if successful
* core error code - if unsuccessful
*
* Output parameters:
* returns number of threads unblocked
*/
uint32_t _CORE_barrier_Release(
CORE_barrier_Control *the_barrier,
#if defined(RTEMS_MULTIPROCESSING)
Objects_Id id,
CORE_barrier_API_mp_support_callout api_barrier_mp_support
#else
Objects_Id id __attribute__((unused)),
CORE_barrier_API_mp_support_callout api_barrier_mp_support __attribute__((unused))
#endif
)
{
Thread_Control *the_thread;
uint32_t count;
count = 0;
while ( (the_thread = _Thread_queue_Dequeue(&the_barrier->Wait_queue)) ) {
#if defined(RTEMS_MULTIPROCESSING)
if ( !_Objects_Is_local_id( the_thread->Object.id ) )
(*api_barrier_mp_support) ( the_thread, id );
#endif
count++;
}
the_barrier->number_of_waiting_threads = 0;
return count;
}
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