source: rtems/cpukit/rtems/src/tasksuspend.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: 2.0 KB
Line 
1/*
2 *  RTEMS Task 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/rtems/status.h>
21#include <rtems/rtems/support.h>
22#include <rtems/rtems/modes.h>
23#include <rtems/score/object.h>
24#include <rtems/score/stack.h>
25#include <rtems/score/states.h>
26#include <rtems/rtems/tasks.h>
27#include <rtems/score/thread.h>
28#include <rtems/score/threadq.h>
29#include <rtems/score/tod.h>
30#include <rtems/score/userext.h>
31#include <rtems/score/wkspace.h>
32#include <rtems/score/apiext.h>
33#include <rtems/score/sysstate.h>
34
35/*PAGE
36 *
37 *  rtems_task_suspend
38 *
39 *  This directive will place the specified thread in the "suspended"
40 *  state.  Note that the suspended state can be in addition to
41 *  other waiting states.
42 *
43 *  Input parameters:
44 *    id - thread id
45 *
46 *  Output parameters:
47 *    RTEMS_SUCCESSFUL - if successful
48 *    error code        - if unsuccessful
49 */
50
51rtems_status_code rtems_task_suspend(
52  Objects_Id id
53)
54{
55  register Thread_Control *the_thread;
56  Objects_Locations        location;
57
58  the_thread = _Thread_Get( id, &location );
59  switch ( location ) {
60
61    case OBJECTS_LOCAL:
62      if ( !_States_Is_suspended( the_thread->current_state ) ) {
63        _Thread_Suspend( the_thread );
64        _Thread_Enable_dispatch();
65        return RTEMS_SUCCESSFUL;
66      }
67      _Thread_Enable_dispatch();
68      return RTEMS_ALREADY_SUSPENDED;
69
70#if defined(RTEMS_MULTIPROCESSING)
71    case OBJECTS_REMOTE:
72      return _RTEMS_tasks_MP_Send_request_packet(
73        RTEMS_TASKS_MP_SUSPEND_REQUEST,
74        id,
75        0,          /* Not used */
76        0,          /* Not used */
77        0           /* Not used */
78      );
79#endif
80
81    case OBJECTS_ERROR:
82      break;
83  }
84
85  return RTEMS_INVALID_ID;
86}
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