コード例 #1
0
ファイル: msgqdelete.c プロジェクト: epicsdeb/rtems
rtems_status_code rtems_message_queue_delete(
  rtems_id id
)
{
  register Message_queue_Control *the_message_queue;
  Objects_Locations               location;

  the_message_queue = _Message_queue_Get( id, &location );
  switch ( location ) {

    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 */
          0
        );
      }
#endif
      _Thread_Enable_dispatch();
      return RTEMS_SUCCESSFUL;

#if defined(RTEMS_MULTIPROCESSING)
    case OBJECTS_REMOTE:
      _Thread_Dispatch();
      return RTEMS_ILLEGAL_ON_REMOTE_OBJECT;
#endif

    case OBJECTS_ERROR:
      break;
  }

  return RTEMS_INVALID_ID;
}
コード例 #2
0
epos_status_code epos_message_queue_create(
  epos_name       name,
  uint32_t         count,
  size_t           max_message_size,
  epos_attribute  attribute_set,
  epos_id        *id
)
{
  register Message_queue_Control *the_message_queue;
  CORE_message_queue_Attributes   the_msgq_attributes;
#if defined(RTEMS_MULTIPROCESSING)
  bool                            is_global;
#endif

  if ( !epos_is_name_valid( name ) )
    return RTEMS_INVALID_NAME;

  if ( !id )
    return RTEMS_INVALID_ADDRESS;

#if defined(RTEMS_MULTIPROCESSING)
  if ( (is_global = _Attributes_Is_global( attribute_set ) ) &&
       !_System_state_Is_multiprocessing )
    return RTEMS_MP_NOT_CONFIGURED;
#endif

  if ( count == 0 )
      return RTEMS_INVALID_NUMBER;

  if ( max_message_size == 0 )
      return RTEMS_INVALID_SIZE;

#if defined(RTEMS_MULTIPROCESSING)
#if 1
  /*
   * I am not 100% sure this should be an error.
   * It seems reasonable to create a que with a large max size,
   * and then just send smaller msgs from remote (or all) nodes.
   */

  if ( is_global && (_MPCI_table->maximum_packet_size < max_message_size) )
    return RTEMS_INVALID_SIZE;
#endif
#endif


  _Thread_Disable_dispatch();              /* protects object pointer */

  the_message_queue = _Message_queue_Allocate();

  if ( !the_message_queue ) {
    _Thread_Enable_dispatch();
    return RTEMS_TOO_MANY;
  }

#if defined(RTEMS_MULTIPROCESSING)
  if ( is_global &&
    !( _Objects_MP_Allocate_and_open( &_Message_queue_Information,
                              name, the_message_queue->Object.id, false ) ) ) {
    _Message_queue_Free( the_message_queue );
    _Thread_Enable_dispatch();
    return RTEMS_TOO_MANY;
  }
#endif

  the_message_queue->attribute_set = attribute_set;

  if (_Attributes_Is_priority( attribute_set ) )
    the_msgq_attributes.discipline = CORE_MESSAGE_QUEUE_DISCIPLINES_PRIORITY;
  else
    the_msgq_attributes.discipline = CORE_MESSAGE_QUEUE_DISCIPLINES_FIFO;

  if ( ! _CORE_message_queue_Initialize(
           &the_message_queue->message_queue,
           &the_msgq_attributes,
           count,
           max_message_size
         ) ) {
#if defined(RTEMS_MULTIPROCESSING)
    if ( is_global )
        _Objects_MP_Close(
          &_Message_queue_Information, the_message_queue->Object.id);
#endif

    _Message_queue_Free( the_message_queue );
    _Thread_Enable_dispatch();
    return RTEMS_UNSATISFIED;
  }

  _Objects_Open(
    &_Message_queue_Information,
    &the_message_queue->Object,
    (Objects_Name) name
  );

  *id = the_message_queue->Object.id;

#if defined(RTEMS_MULTIPROCESSING)
  if ( is_global )
    _Message_queue_MP_Send_process_packet(
      MESSAGE_QUEUE_MP_ANNOUNCE_CREATE,
      the_message_queue->Object.id,
      name,
      0
    );
#endif

  _Thread_Enable_dispatch();
  return RTEMS_SUCCESSFUL;
}