source: rtems/cpukit/rtems/src/taskwakewhen.c @ c55df85

4.104.114.84.95
Last change on this file since c55df85 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: 1.8 KB
Line 
1/*
2 *  RTEMS Task 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/rtems/modes.h>
19#include <rtems/score/object.h>
20#include <rtems/score/stack.h>
21#include <rtems/score/states.h>
22#include <rtems/rtems/tasks.h>
23#include <rtems/score/thread.h>
24#include <rtems/score/threadq.h>
25#include <rtems/score/tod.h>
26#include <rtems/score/userext.h>
27#include <rtems/score/wkspace.h>
28#include <rtems/score/apiext.h>
29#include <rtems/score/sysstate.h>
30
31/*PAGE
32 *
33 *  rtems_task_wake_when
34 *
35 *  This directive blocks the requesting thread until the given date and
36 *  time is reached.
37 *
38 *  Input parameters:
39 *    time_buffer - pointer to the time and date structure
40 *
41 *  Output parameters:
42 *    RTEMS_SUCCESSFUL - if successful
43 *    error code        - if unsuccessful
44 */
45
46rtems_status_code rtems_task_wake_when(
47rtems_time_of_day *time_buffer
48)
49{
50  Watchdog_Interval   seconds;
51
52  if ( !_TOD_Is_set )
53    return RTEMS_NOT_DEFINED;
54
55  time_buffer->ticks = 0;
56
57  if ( !_TOD_Validate( time_buffer ) )
58    return RTEMS_INVALID_CLOCK;
59
60  seconds = _TOD_To_seconds( time_buffer );
61
62  if ( seconds <= _TOD_Seconds_since_epoch )
63    return RTEMS_INVALID_CLOCK;
64
65  _Thread_Disable_dispatch();
66    _Thread_Set_state( _Thread_Executing, STATES_WAITING_FOR_TIME );
67    _Watchdog_Initialize(
68      &_Thread_Executing->Timer,
69      _Thread_Delay_ended,
70      _Thread_Executing->Object.id,
71      NULL
72    );
73    _Watchdog_Insert_seconds(
74      &_Thread_Executing->Timer,
75      seconds - _TOD_Seconds_since_epoch
76    );
77  _Thread_Enable_dispatch();
78  return RTEMS_SUCCESSFUL;
79}
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