source: rtems/cpukit/rtems/src/msgqbroadcast.c @ cc18d7b

/**
 *  @file
 *
 *  @brief RTEMS Broadcast Message Queue
 *  @ingroup ClassicMessageQueue
 */

/*
 *  COPYRIGHT (c) 1989-2014.
 *  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/system.h>
#include <rtems/score/chain.h>
#include <rtems/score/isr.h>
#include <rtems/score/coremsgimpl.h>
#include <rtems/score/thread.h>
#include <rtems/score/wkspace.h>
#include <rtems/rtems/status.h>
#include <rtems/rtems/attrimpl.h>
#include <rtems/rtems/messageimpl.h>
#include <rtems/rtems/options.h>
#include <rtems/rtems/support.h>

rtems_status_code rtems_message_queue_broadcast(
  rtems_id    id,
  const void *buffer,
  size_t      size,
  uint32_t   *count
)
{
  Message_queue_Control          *the_message_queue;
  Objects_Locations               location;
  CORE_message_queue_Status       core_status;
  ISR_lock_Context                lock_context;

  if ( !buffer )
    return RTEMS_INVALID_ADDRESS;

  if ( !count )
    return RTEMS_INVALID_ADDRESS;

  the_message_queue = _Message_queue_Get_interrupt_disable(
    id,
    &location,
    &lock_context
  );
  switch ( location ) {

    case OBJECTS_LOCAL:
      core_status = _CORE_message_queue_Broadcast(
                      &the_message_queue->message_queue,
                      buffer,
                      size,
                      id,
                      #if defined(RTEMS_MULTIPROCESSING)
                        _Message_queue_Core_message_queue_mp_support,
                      #else
                        NULL,
                      #endif
                      count,
                      &lock_context
                    );
      return
        _Message_queue_Translate_core_message_queue_return_code( core_status );

#if defined(RTEMS_MULTIPROCESSING)
    case OBJECTS_REMOTE:
      _Thread_Executing->Wait.return_argument = count;

      return
        _Message_queue_MP_Send_request_packet(
          MESSAGE_QUEUE_MP_BROADCAST_REQUEST,
          id,
          buffer,
          &size,
          0,                               /* option_set not used */
          MPCI_DEFAULT_TIMEOUT
        );
#endif

    case OBJECTS_ERROR:
      break;
  }
  return RTEMS_INVALID_ID;
}