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/**
* @file
*
* @brief RTEMS Urgent 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.com/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>
#if defined(RTEMS_MULTIPROCESSING)
#define MESSAGE_QUEUE_MP_HANDLER _Message_queue_Core_message_queue_mp_support
#else
#define MESSAGE_QUEUE_MP_HANDLER NULL
#endif
rtems_status_code rtems_message_queue_urgent(
rtems_id id,
const void *buffer,
size_t size
)
{
Message_queue_Control *the_message_queue;
Objects_Locations location;
CORE_message_queue_Status status;
if ( !buffer )
return RTEMS_INVALID_ADDRESS;
the_message_queue = _Message_queue_Get( id, &location );
switch ( location ) {
case OBJECTS_LOCAL:
status = _CORE_message_queue_Urgent(
&the_message_queue->message_queue,
buffer,
size,
id,
MESSAGE_QUEUE_MP_HANDLER,
false, /* sender does not block */
0 /* no timeout */
);
_Objects_Put( &the_message_queue->Object );
/*
* Since this API does not allow for blocking sends, we can directly
* return the returned status.
*/
return _Message_queue_Translate_core_message_queue_return_code(status);
#if defined(RTEMS_MULTIPROCESSING)
case OBJECTS_REMOTE:
return _Message_queue_MP_Send_request_packet(
MESSAGE_QUEUE_MP_URGENT_REQUEST,
id,
buffer,
&size,
0, /* option_set */
MPCI_DEFAULT_TIMEOUT
);
#endif
case OBJECTS_ERROR:
break;
}
return RTEMS_INVALID_ID;
}
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