source: rtems/cpukit/rtems/src/msgqbroadcast.c @ 1095ec1

4.104.114.84.9
Last change on this file since 1095ec1 was 1095ec1, checked in by Ralf Corsepius <ralf.corsepius@…>, on Jan 18, 2005 at 9:03:45 AM

Include config.h.

  • Property mode set to 100644
File size: 2.9 KB
Line 
1/*
2 *  Message Queue Manager
3 *
4 *
5 *  COPYRIGHT (c) 1989-1999.
6 *  On-Line Applications Research Corporation (OAR).
7 *
8 *  The license and distribution terms for this file may be
9 *  found in the file LICENSE in this distribution or at
10 *  http://www.rtems.com/license/LICENSE.
11 *
12 *  $Id$
13 */
14
15#if HAVE_CONFIG_H
16#include "config.h"
17#endif
18
19#include <rtems/system.h>
20#include <rtems/score/sysstate.h>
21#include <rtems/score/chain.h>
22#include <rtems/score/isr.h>
23#include <rtems/score/coremsg.h>
24#include <rtems/score/object.h>
25#include <rtems/score/states.h>
26#include <rtems/score/thread.h>
27#include <rtems/score/wkspace.h>
28#if defined(RTEMS_MULTIPROCESSING)
29#include <rtems/score/mpci.h>
30#endif
31#include <rtems/rtems/status.h>
32#include <rtems/rtems/attr.h>
33#include <rtems/rtems/message.h>
34#include <rtems/rtems/options.h>
35#include <rtems/rtems/support.h>
36
37/*PAGE
38 *
39 *  rtems_message_queue_broadcast
40 *
41 *  This directive sends a message for every thread waiting on the queue
42 *  designated by id.
43 *
44 *  Input parameters:
45 *    id     - pointer to message queue
46 *    buffer - pointer to message buffer
47 *    size   - size of message to broadcast
48 *    count  - pointer to area to store number of threads made ready
49 *
50 *  Output parameters:
51 *    count             - number of threads made ready
52 *    RTEMS_SUCCESSFUL  - if successful
53 *    error code        - if unsuccessful
54 */
55
56rtems_status_code rtems_message_queue_broadcast(
57  Objects_Id            id,
58  void                 *buffer,
59  uint32_t              size,
60  uint32_t             *count
61)
62{
63  register Message_queue_Control *the_message_queue;
64  Objects_Locations               location;
65  CORE_message_queue_Status       core_status;
66
67  if ( !buffer )
68    return RTEMS_INVALID_ADDRESS;
69
70  if ( !count )
71    return RTEMS_INVALID_ADDRESS;
72
73  the_message_queue = _Message_queue_Get( id, &location );
74  switch ( location ) {
75    case OBJECTS_REMOTE:
76#if defined(RTEMS_MULTIPROCESSING)
77      _Thread_Executing->Wait.return_argument = count;
78
79      return
80        _Message_queue_MP_Send_request_packet(
81          MESSAGE_QUEUE_MP_BROADCAST_REQUEST,
82          id,
83          buffer,
84          &size,
85          0,                               /* option_set not used */
86          MPCI_DEFAULT_TIMEOUT
87        );
88#endif
89
90    case OBJECTS_ERROR:
91      return RTEMS_INVALID_ID;
92
93    case OBJECTS_LOCAL:
94      core_status = _CORE_message_queue_Broadcast(
95                      &the_message_queue->message_queue,
96                      buffer,
97                      size,
98                      id,
99#if defined(RTEMS_MULTIPROCESSING)
100                      _Message_queue_Core_message_queue_mp_support,
101#else
102                      NULL,
103#endif
104                      count
105                    );
106
107      _Thread_Enable_dispatch();
108      return
109        _Message_queue_Translate_core_message_queue_return_code( core_status );
110
111  }
112  return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */
113}
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