Subversion Repositories openrisc_2011-10-31

/*

 *  Message Queue Manager

 *

 *

 *  COPYRIGHT (c) 1989-1999.

 *  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.OARcorp.com/rtems/license.html.

 *

 *  $Id: msgqdelete.c,v 1.2 2001-09-27 11:59:19 chris Exp $

 */

#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>

/*PAGE

 *

 *  rtems_message_queue_delete

 *

 *  This directive allows a thread to delete the message queue specified

 *  by the given queue identifier.

 *

 *  Input parameters:

 *    id - queue id

 *

 *  Output parameters:

 *    RTEMS_SUCCESSFUL - if successful

 *    error code        - if unsuccessful

 */

rtems_status_code rtems_message_queue_delete(

  Objects_Id id

)

{

  register Message_queue_Control *the_message_queue;

  Objects_Locations               location;

  the_message_queue = _Message_queue_Get( id, &location );

  switch ( location ) {

    case OBJECTS_REMOTE:

#if defined(RTEMS_MULTIPROCESSING)

      _Thread_Dispatch();

      return RTEMS_ILLEGAL_ON_REMOTE_OBJECT;

#endif

    case OBJECTS_ERROR:

      return RTEMS_INVALID_ID;

    case OBJECTS_LOCAL:

      _Objects_Close( &_Message_queue_Information,

                      &the_message_queue->Object );

      _CORE_message_queue_Close(

        &the_message_queue->message_queue,

#if defined(RTEMS_MULTIPROCESSING)

        _Message_queue_MP_Send_object_was_deleted,

#else

        NULL,

#endif

        CORE_MESSAGE_QUEUE_STATUS_WAS_DELETED

      );

      _Message_queue_Free( the_message_queue );

#if defined(RTEMS_MULTIPROCESSING)

      if ( _Attributes_Is_global( the_message_queue->attribute_set ) ) {

        _Objects_MP_Close(

          &_Message_queue_Information,

          the_message_queue->Object.id

        );

        _Message_queue_MP_Send_process_packet(

          MESSAGE_QUEUE_MP_ANNOUNCE_DELETE,

          the_message_queue->Object.id,

          0,                                 /* Not used */

        );

      }

#endif

      _Thread_Enable_dispatch();

      return RTEMS_SUCCESSFUL;

  }

  return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */

}