source: rtems/cpukit/rtems/src/msgqbroadcast.c @ ebe61382

4.104.114.95
Last change on this file since ebe61382 was ebe61382, checked in by Joel Sherrill <joel.sherrill@…>, on 11/30/07 at 21:49:41

2007-11-30 Joel Sherrill <joel.sherrill@…>

  • rtems/src/barrierdelete.c, rtems/src/barrierrelease.c, rtems/src/barriertranslatereturncode.c, rtems/src/barrierwait.c, rtems/src/clockget.c, rtems/src/dpmemdelete.c, rtems/src/dpmemexternal2internal.c, rtems/src/dpmeminternal2external.c, rtems/src/eventsend.c, rtems/src/eventtimeout.c, rtems/src/msgqbroadcast.c, rtems/src/msgqdelete.c, rtems/src/msgqflush.c, rtems/src/msgqgetnumberpending.c, rtems/src/msgqreceive.c, rtems/src/msgqsend.c, rtems/src/msgqurgent.c, rtems/src/partdelete.c, rtems/src/partgetbuffer.c, rtems/src/partreturnbuffer.c, rtems/src/ratemoncancel.c, rtems/src/ratemondelete.c, rtems/src/ratemongetstatistics.c, rtems/src/ratemongetstatus.c, rtems/src/ratemonperiod.c, rtems/src/ratemonresetstatistics.c, rtems/src/ratemontimeout.c, rtems/src/semdelete.c, rtems/src/semflush.c, rtems/src/semobtain.c, rtems/src/semrelease.c, rtems/src/semtranslatereturncode.c, rtems/src/signalsend.c, rtems/src/taskdelete.c, rtems/src/taskgetnote.c, rtems/src/taskissuspended.c, rtems/src/taskrestart.c, rtems/src/taskresume.c, rtems/src/tasksetnote.c, rtems/src/tasksetpriority.c, rtems/src/taskstart.c, rtems/src/tasksuspend.c, rtems/src/taskvariableadd.c, rtems/src/taskvariabledelete.c, rtems/src/taskvariableget.c, rtems/src/timercancel.c, rtems/src/timerdelete.c, rtems/src/timerfirewhen.c, rtems/src/timergetinfo.c, rtems/src/timerreset.c, rtems/src/timerserverfireafter.c, rtems/src/timerserverfirewhen.c: Restructured all code with the switch (location) pattern so that OBJECTS_LOCAL is first and we can fall into it and the OBJECTS_ERROR case breaks to a return RTEMS_INVALID_ID. This eliminates the return RTEMS_INTERNAL_ERROR at the bottom of each of these files which was unreachable and untestable code. This resulted in a code savings of approximately 20 bytes per file on the SPARC/ERC32.
  • Property mode set to 100644
File size: 2.9 KB
Line 
1/*
2 *  Message Queue Manager
3 *
4 *
5 *  COPYRIGHT (c) 1989-2007.
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  size_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
76    case OBJECTS_LOCAL:
77      core_status = _CORE_message_queue_Broadcast(
78                      &the_message_queue->message_queue,
79                      buffer,
80                      size,
81                      id,
82                      #if defined(RTEMS_MULTIPROCESSING)
83                        _Message_queue_Core_message_queue_mp_support,
84                      #else
85                        NULL,
86                      #endif
87                      count
88                    );
89
90      _Thread_Enable_dispatch();
91      return
92        _Message_queue_Translate_core_message_queue_return_code( core_status );
93
94#if defined(RTEMS_MULTIPROCESSING)
95    case OBJECTS_REMOTE:
96      _Thread_Executing->Wait.return_argument = count;
97
98      return
99        _Message_queue_MP_Send_request_packet(
100          MESSAGE_QUEUE_MP_BROADCAST_REQUEST,
101          id,
102          buffer,
103          &size,
104          0,                               /* option_set not used */
105          MPCI_DEFAULT_TIMEOUT
106        );
107#endif
108
109    case OBJECTS_ERROR:
110      break;
111  }
112  return RTEMS_INVALID_ID;
113}
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