source: rtems/cpukit/rtems/src/taskresume.c @ e6b31b27

4.115
Last change on this file since e6b31b27 was edcf89b, checked in by Sebastian Huber <sebastian.huber@…>, on 03/27/15 at 20:08:21

rtems: Atomically suspend/resume tasks

  • Property mode set to 100644
File size: 1.3 KB
Line 
1/**
2 *  @file
3 *
4 *  @brief RTEMS Resume Task
5 *  @ingroup ClassicTasks
6 */
7
8/*
9 *  COPYRIGHT (c) 1989-2014.
10 *  On-Line Applications Research Corporation (OAR).
11 *
12 *  The license and distribution terms for this file may be
13 *  found in the file LICENSE in this distribution or at
14 *  http://www.rtems.org/license/LICENSE.
15 */
16
17#if HAVE_CONFIG_H
18#include "config.h"
19#endif
20
21#include <rtems/rtems/tasksimpl.h>
22#include <rtems/score/threadimpl.h>
23
24rtems_status_code rtems_task_resume(
25  rtems_id id
26)
27{
28  Thread_Control          *the_thread;
29  Objects_Locations        location;
30  States_Control           previous_state;
31
32  the_thread = _Thread_Get( id, &location );
33  switch ( location ) {
34
35    case OBJECTS_LOCAL:
36      previous_state = _Thread_Clear_state( the_thread, STATES_SUSPENDED );
37      _Objects_Put( &the_thread->Object );
38
39      return _States_Is_suspended( previous_state ) ?
40        RTEMS_SUCCESSFUL : RTEMS_INCORRECT_STATE;
41
42#if defined(RTEMS_MULTIPROCESSING)
43    case OBJECTS_REMOTE:
44      return _RTEMS_tasks_MP_Send_request_packet(
45          RTEMS_TASKS_MP_RESUME_REQUEST,
46          id,
47          0,          /* Not used */
48          0,          /* Not used */
49          0           /* Not used */
50        );
51#endif
52
53    case OBJECTS_ERROR:
54      break;
55  }
56
57  return RTEMS_INVALID_ID;
58}
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