source: rtems/cpukit/rtems/src/timercreate.c @ 23fec9f0

4.115
Last change on this file since 23fec9f0 was 23fec9f0, checked in by Sebastian Huber <sebastian.huber@…>, on 03/27/14 at 13:16:12

score: PR2152: Use allocator mutex for objects

Use allocator mutex for objects allocate/free. This prevents that the
thread dispatch latency depends on the workspace/heap fragmentation.

  • Property mode set to 100644
File size: 1.2 KB
Line 
1/**
2 *  @file
3 *
4 *  @brief RTEMS Create Timer
5 *  @ingroup ClassicTimer
6 */
7
8/*
9 *  COPYRIGHT (c) 1989-2002.
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/system.h>
22#include <rtems/rtems/status.h>
23#include <rtems/rtems/support.h>
24#include <rtems/score/thread.h>
25#include <rtems/rtems/timerimpl.h>
26#include <rtems/score/watchdogimpl.h>
27
28rtems_status_code rtems_timer_create(
29  rtems_name  name,
30  rtems_id   *id
31)
32{
33  Timer_Control *the_timer;
34
35  if ( !rtems_is_name_valid( name ) )
36    return RTEMS_INVALID_NAME;
37
38  if ( !id )
39    return RTEMS_INVALID_ADDRESS;
40
41  the_timer = _Timer_Allocate();
42
43  if ( !the_timer ) {
44    _Objects_Allocator_unlock();
45    return RTEMS_TOO_MANY;
46  }
47
48  the_timer->the_class = TIMER_DORMANT;
49  _Watchdog_Initialize( &the_timer->Ticker, NULL, 0, NULL );
50
51  _Objects_Open(
52    &_Timer_Information,
53    &the_timer->Object,
54    (Objects_Name) name
55  );
56
57  *id = the_timer->Object.id;
58  _Objects_Allocator_unlock();
59  return RTEMS_SUCCESSFUL;
60}
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