source: rtems/cpukit/rtems/src/timercreate.c @ 17bbadd

Last change on this file since 17bbadd was 17bbadd, checked in by Joel Sherrill <joel.sherrill@…>, on 05/06/04 at 19:20:04

2004-05-06 Joel Sherrill <joel@…>

PR 618/rtems

  • include/rtems/rtems/status.h, src/clockget.c, src/clockset.c, src/dpmemcreate.c, src/dpmemexternal2internal.c, src/dpmeminternal2external.c, src/eventmp.c, src/eventreceive.c, src/eventsend.c, src/msgqbroadcast.c, src/msgqcreate.c, src/msgqflush.c, src/msgqgetnumberpending.c, src/msgqreceive.c, src/msgqsubmit.c, src/partcreate.c, src/partdelete.c, src/partgetbuffer.c, src/ratemoncancel.c, src/ratemoncreate.c, src/ratemondelete.c, src/ratemongetstatus.c, src/ratemonident.c, src/ratemonperiod.c, src/regioncreate.c, src/regiondelete.c, src/regionextend.c, src/regiongetsegment.c, src/regiongetsegmentsize.c, src/regionreturnsegment.c, src/semcreate.c, src/semdelete.c, src/semflush.c, src/semident.c, src/taskcreate.c, src/taskgetnote.c, src/taskmode.c, src/taskrestart.c, src/taskresume.c, src/tasksetnote.c, src/tasksuspend.c, src/taskvariableadd.c, src/taskvariabledelete.c, src/taskvariableget.c, src/taskwakewhen.c, src/timercreate.c, src/timerdelete.c, src/timerfireafter.c, src/timerfirewhen.c, src/timerserverfireafter.c, src/timerserverfirewhen.c: Add NULL checks.
  • Property mode set to 100644
File size: 1.5 KB
Line 
1/*
2 *  Timer Manager - rtems_timer_create directive
3 *
4 *
5 *  COPYRIGHT (c) 1989-2002.
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#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_create
27 *
28 *  This directive creates a timer and performs some initialization.
29 *
30 *  Input parameters:
31 *    name - timer name
32 *    id   - pointer to timer id
33 *
34 *  Output parameters:
35 *    id               - timer id
36 *    RTEMS_SUCCESSFUL - if successful
37 *    error code       - if unsuccessful
38 */
39
40rtems_status_code rtems_timer_create(
41  rtems_name    name,
42  Objects_Id   *id
43)
44{
45  Timer_Control *the_timer;
46
47  if ( !rtems_is_name_valid( name ) )
48    return RTEMS_INVALID_NAME;
49
50  if ( !id )
51    return RTEMS_INVALID_ADDRESS;
52
53  _Thread_Disable_dispatch();         /* to prevent deletion */
54
55  the_timer = _Timer_Allocate();
56
57  if ( !the_timer ) {
58    _Thread_Enable_dispatch();
59    return RTEMS_TOO_MANY;
60  }
61
62  the_timer->the_class = TIMER_DORMANT;
63
64  _Objects_Open(
65    &_Timer_Information,
66    &the_timer->Object,
67    (Objects_Name) name
68  );
69
70  *id = the_timer->Object.id;
71  _Thread_Enable_dispatch();
72  return RTEMS_SUCCESSFUL;
73}
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