source: rtems/cpukit/rtems/src/taskissuspended.c @ e7541849

4.104.114.84.95
Last change on this file since e7541849 was 1095ec1, checked in by Ralf Corsepius <ralf.corsepius@…>, on 01/18/05 at 09:03:45

Include config.h.

  • Property mode set to 100644
File size: 1.9 KB
Line 
1/*
2 *  RTEMS Task 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/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_is_suspended
38 *
39 *  This directive returns a status indicating whether or not
40 *  the specified task is suspended.
41 *
42 *  Input parameters:
43 *    id - thread id
44 *
45 *  Output parameters:
46 *    RTEMS_SUCCESSFUL        - if successful and not suspended
47 *    RTEMS_ALREADY_SUSPENDED - if successful and suspended
48 *    error code              - if unsuccessful
49 */
50
51rtems_status_code rtems_task_is_suspended(
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_REMOTE:
62
63#if defined(RTEMS_MULTIPROCESSING)
64      _Thread_Dispatch();
65      return RTEMS_ILLEGAL_ON_REMOTE_OBJECT;
66#endif
67
68    case OBJECTS_ERROR:
69      return RTEMS_INVALID_ID;
70
71    case OBJECTS_LOCAL:
72      if ( !_States_Is_suspended( the_thread->current_state ) ) {
73        _Thread_Enable_dispatch();
74        return RTEMS_SUCCESSFUL;
75      }
76      _Thread_Enable_dispatch();
77      return RTEMS_ALREADY_SUSPENDED;
78  }
79
80  return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */
81}
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