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/*
* Message Queue Manager - rtems_message_queue_send
*
* COPYRIGHT (c) 1989-2007.
* 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/sysstate.h>
#include <rtems/score/chain.h>
#include <rtems/score/isr.h>
#include <rtems/score/coremsg.h>
#include <rtems/score/object.h>
#include <rtems/score/states.h>
#include <rtems/score/thread.h>
#include <rtems/score/wkspace.h>
#if defined(RTEMS_MULTIPROCESSING)
#include <rtems/score/mpci.h>
#endif
#include <rtems/rtems/status.h>
#include <rtems/rtems/attr.h>
#include <rtems/rtems/message.h>
#include <rtems/rtems/options.h>
#include <rtems/rtems/support.h>
/*
*
* rtems_message_queue_send
*
* This routine implements the directive rtems_message_queue_send. It sends a
* message to the specified message queue.
*
* Input parameters:
* id - pointer to message queue
* buffer - pointer to message buffer
* size - size of message to send
*
* Output parameters:
* RTEMS_SUCCESSFUL - if successful
* error code - if unsuccessful
*/
#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_send(
rtems_id id,
const void *buffer,
size_t size
)
{
register 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_Send(
&the_message_queue->message_queue,
buffer,
size,
id,
MESSAGE_QUEUE_MP_HANDLER,
false, /* sender does not block */
0 /* no timeout */
);
_Thread_Enable_dispatch();
/*
* 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_SEND_REQUEST,
id,
buffer,
&size,
0, /* option_set */
MPCI_DEFAULT_TIMEOUT
);
break;
#endif
case OBJECTS_ERROR:
break;
}
return RTEMS_INVALID_ID;
}
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