summaryrefslogtreecommitdiffstats
path: root/cpukit/rtems/src/taskrestart.c
blob: 953dce194d42b63603296eac179e70e6adbb49cc (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
/*
 *  RTEMS Task Manager
 *
 *
 *  COPYRIGHT (c) 1989-2007.
 *  On-Line Applications Research Corporation (OAR).
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *  http://www.rtems.com/license/LICENSE.
 *
 *  $Id$
 */

#if HAVE_CONFIG_H
#include "config.h"
#endif

#include <rtems/system.h>
#include <rtems/rtems/status.h>
#include <rtems/rtems/support.h>
#include <rtems/rtems/modes.h>
#include <rtems/score/object.h>
#include <rtems/score/stack.h>
#include <rtems/score/states.h>
#include <rtems/rtems/tasks.h>
#include <rtems/score/thread.h>
#include <rtems/score/threadq.h>
#include <rtems/score/tod.h>
#include <rtems/score/userext.h>
#include <rtems/score/wkspace.h>
#include <rtems/score/apiext.h>
#include <rtems/score/sysstate.h>

/*
 *  rtems_task_restart
 *
 *  This directive readies the specified thread.  It restores
 *  the thread environment to the original values established
 *  at thread creation and start time.  A thread can be restarted
 *  from any state except the dormant state.
 *
 *  Input parameters:
 *    id       - thread id
 *    argument - thread argument
 *
 *  Output parameters:
 *    RTEMS_SUCCESSFUL - if successful
 *    error code       - if unsuccessful
 */

rtems_status_code rtems_task_restart(
  rtems_id  id,
  uint32_t  argument
)
{
  register Thread_Control *the_thread;
  Objects_Locations        location;

  the_thread = _Thread_Get( id, &location );
  switch ( location ) {

    case OBJECTS_LOCAL:
      if ( _Thread_Restart( the_thread, NULL, argument ) ) {
        _Thread_Enable_dispatch();
        return RTEMS_SUCCESSFUL;
      }
      _Thread_Enable_dispatch();
      return RTEMS_INCORRECT_STATE;

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

    case OBJECTS_ERROR:
      break;
  }

  return RTEMS_INVALID_ID;
}