source: rtems/cpukit/rtems/src/timercancel.c @ 08311cc3

4.104.114.84.95
Last change on this file since 08311cc3 was 08311cc3, checked in by Joel Sherrill <joel.sherrill@…>, on 11/17/99 at 17:51:34

Updated copyright notice.

  • Property mode set to 100644
File size: 1.4 KB
Line 
1/*
2 *  Timer 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.OARcorp.com/rtems/license.html.
11 *
12 *  $Id$
13 */
14
15#include <rtems/system.h>
16#include <rtems/rtems/status.h>
17#include <rtems/rtems/support.h>
18#include <rtems/score/object.h>
19#include <rtems/score/thread.h>
20#include <rtems/rtems/timer.h>
21#include <rtems/score/tod.h>
22#include <rtems/score/watchdog.h>
23
24/*PAGE
25 *
26 *  rtems_timer_cancel
27 *
28 *  This directive allows a thread to cancel a timer.
29 *
30 *  Input parameters:
31 *    id - timer id
32 *
33 *  Output parameters:
34 *    RTEMS_SUCCESSFUL - if successful
35 *    error code - if unsuccessful
36 */
37
38rtems_status_code rtems_timer_cancel(
39  Objects_Id id
40)
41{
42  Timer_Control   *the_timer;
43  Objects_Locations       location;
44
45  the_timer = _Timer_Get( id, &location );
46  switch ( location ) {
47    case OBJECTS_REMOTE:            /* should never return this */
48      return RTEMS_INTERNAL_ERROR;
49
50    case OBJECTS_ERROR:
51      return RTEMS_INVALID_ID;
52
53    case OBJECTS_LOCAL:
54      if ( !_Timer_Is_dormant_class( the_timer->the_class ) )
55        (void) _Watchdog_Remove( &the_timer->Ticker );
56      _Thread_Enable_dispatch();
57      return RTEMS_SUCCESSFUL;
58  }
59
60  return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */
61}
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