source: rtems/cpukit/rtems/src/clockget.c @ 7a39c88

Last change on this file since 7a39c88 was 7a39c88, checked in by Joel Sherrill <joel.sherrill@…>, on 09/04/03 at 18:47:18

2003-09-04 Joel Sherrill <joel@…>

  • include/rtems.h, include/rtems/rtems/asr.h, include/rtems/rtems/attr.h, include/rtems/rtems/cache.h, include/rtems/rtems/clock.h, include/rtems/rtems/config.h, include/rtems/rtems/dpmem.h, include/rtems/rtems/event.h, include/rtems/rtems/eventmp.h, include/rtems/rtems/eventset.h, include/rtems/rtems/intr.h, include/rtems/rtems/message.h, include/rtems/rtems/modes.h, include/rtems/rtems/mp.h, include/rtems/rtems/msgmp.h, include/rtems/rtems/options.h, include/rtems/rtems/part.h, include/rtems/rtems/partmp.h, include/rtems/rtems/ratemon.h, include/rtems/rtems/region.h, include/rtems/rtems/regionmp.h, include/rtems/rtems/rtemsapi.h, include/rtems/rtems/sem.h, include/rtems/rtems/semmp.h, include/rtems/rtems/signal.h, include/rtems/rtems/signalmp.h, include/rtems/rtems/status.h, include/rtems/rtems/support.h, include/rtems/rtems/taskmp.h, include/rtems/rtems/tasks.h, include/rtems/rtems/timer.h, include/rtems/rtems/types.h, inline/rtems/rtems/asr.inl, inline/rtems/rtems/attr.inl, inline/rtems/rtems/dpmem.inl, inline/rtems/rtems/event.inl, inline/rtems/rtems/eventset.inl, inline/rtems/rtems/message.inl, inline/rtems/rtems/modes.inl, inline/rtems/rtems/options.inl, inline/rtems/rtems/part.inl, inline/rtems/rtems/ratemon.inl, inline/rtems/rtems/region.inl, inline/rtems/rtems/sem.inl, inline/rtems/rtems/status.inl, inline/rtems/rtems/support.inl, inline/rtems/rtems/tasks.inl, inline/rtems/rtems/timer.inl, macros/rtems/rtems/asr.inl, macros/rtems/rtems/attr.inl, macros/rtems/rtems/dpmem.inl, macros/rtems/rtems/event.inl, macros/rtems/rtems/eventset.inl, macros/rtems/rtems/message.inl, macros/rtems/rtems/modes.inl, macros/rtems/rtems/options.inl, macros/rtems/rtems/part.inl, macros/rtems/rtems/ratemon.inl, macros/rtems/rtems/region.inl, macros/rtems/rtems/sem.inl, macros/rtems/rtems/status.inl, macros/rtems/rtems/support.inl, macros/rtems/rtems/tasks.inl, macros/rtems/rtems/timer.inl, src/attr.c, src/clockget.c, src/clockset.c, src/clocktick.c, src/dpmem.c, src/dpmemcreate.c, src/dpmemdelete.c, src/dpmemexternal2internal.c, src/dpmemident.c, src/dpmeminternal2external.c, src/event.c, src/eventmp.c, src/eventreceive.c, src/eventseize.c, src/eventsend.c, src/eventsurrender.c, src/eventtimeout.c, src/intr.c, src/intrbody.c, src/intrcatch.c, src/mp.c, src/msg.c, src/msgmp.c, src/msgqallocate.c, src/msgqbroadcast.c, src/msgqcreate.c, src/msgqdelete.c, src/msgqflush.c, src/msgqgetnumberpending.c, src/msgqident.c, src/msgqreceive.c, src/msgqsend.c, src/msgqsubmit.c, src/msgqtranslatereturncode.c, src/msgqurgent.c, src/part.c, src/partcreate.c, src/partdelete.c, src/partgetbuffer.c, src/partident.c, src/partmp.c, src/partreturnbuffer.c, src/ratemon.c, src/ratemoncancel.c, src/ratemoncreate.c, src/ratemondelete.c, src/ratemongetstatus.c, src/ratemonident.c, src/ratemonperiod.c, src/ratemontimeout.c, src/region.c, src/regioncreate.c, src/regiondelete.c, src/regionextend.c, src/regiongetinfo.c, src/regiongetsegment.c, src/regiongetsegmentsize.c, src/regionident.c, src/regionmp.c, src/regionreturnsegment.c, src/rtclock.c, src/rtemstimer.c, src/sem.c, src/semcreate.c, src/semdelete.c, src/semflush.c, src/semident.c, src/semmp.c, src/semobtain.c, src/semrelease.c, src/semtranslatereturncode.c, src/signal.c, src/signalcatch.c, src/signalmp.c, src/signalsend.c, src/taskcreate.c, src/taskdelete.c, src/taskgetnote.c, src/taskident.c, src/taskinitusers.c, src/taskissuspended.c, src/taskmode.c, src/taskmp.c, src/taskrestart.c, src/taskresume.c, src/tasks.c, src/tasksetnote.c, src/tasksetpriority.c, src/taskstart.c, src/tasksuspend.c, src/taskvariableadd.c, src/taskvariabledelete.c, src/taskvariableget.c, src/taskwakeafter.c, src/taskwakewhen.c, src/timercancel.c, src/timercreate.c, src/timerdelete.c, src/timerfireafter.c, src/timerfirewhen.c, src/timergetinfo.c, src/timerident.c, src/timerreset.c, src/timerserver.c, src/timerserverfireafter.c, src/timerserverfirewhen.c: URL for license changed.
  • Property mode set to 100644
File size: 2.3 KB
Line 
1/*
2 *  Clock Manager
3 *
4 *  COPYRIGHT (c) 1989-1999.
5 *  On-Line Applications Research Corporation (OAR).
6 *
7 *  The license and distribution terms for this file may be
8 *  found in the file LICENSE in this distribution or at
9 *  http://www.rtems.com/license/LICENSE.
10 *
11 *  $Id$
12 */
13
14#include <rtems/system.h>
15#include <rtems/rtems/status.h>
16#include <rtems/rtems/clock.h>
17#include <rtems/score/isr.h>
18#include <rtems/score/thread.h>
19#include <rtems/score/tod.h>
20#include <rtems/score/watchdog.h>
21
22/*PAGE
23 *
24 *  rtems_clock_get
25 *
26 *  This directive returns the current date and time.  If the time has
27 *  not been set by a tm_set then an error is returned.
28 *
29 *  Input parameters:
30 *    option      - which value to return
31 *    time_buffer - pointer to output buffer (a time and date structure
32 *                  or an interval)
33 *
34 *  Output parameters:
35 *    time_buffer      - output filled in
36 *    RTEMS_SUCCESSFUL - if successful
37 *    error code       - if unsuccessful
38 */
39
40rtems_status_code rtems_clock_get(
41  rtems_clock_get_options  option,
42  void                    *time_buffer
43)
44{
45  ISR_Level      level;
46  rtems_interval tmp;
47
48  switch ( option ) {
49    case RTEMS_CLOCK_GET_TOD:
50      if ( !_TOD_Is_set )
51        return RTEMS_NOT_DEFINED;
52
53      *(rtems_time_of_day *)time_buffer = _TOD_Current;
54      return RTEMS_SUCCESSFUL;
55
56    case RTEMS_CLOCK_GET_SECONDS_SINCE_EPOCH:
57      if ( !_TOD_Is_set )
58        return RTEMS_NOT_DEFINED;
59
60      *(rtems_interval *)time_buffer = _TOD_Seconds_since_epoch;
61      return RTEMS_SUCCESSFUL;
62
63    case RTEMS_CLOCK_GET_TICKS_SINCE_BOOT:
64      *(rtems_interval *)time_buffer = _Watchdog_Ticks_since_boot;
65      return RTEMS_SUCCESSFUL;
66
67    case RTEMS_CLOCK_GET_TICKS_PER_SECOND:
68      *(rtems_interval *)time_buffer = _TOD_Ticks_per_second;
69      return RTEMS_SUCCESSFUL;
70
71    case RTEMS_CLOCK_GET_TIME_VALUE:
72      if ( !_TOD_Is_set )
73        return RTEMS_NOT_DEFINED;
74
75      _ISR_Disable( level );
76        ((rtems_clock_time_value *)time_buffer)->seconds =
77          _TOD_Seconds_since_epoch;
78        tmp = _TOD_Current.ticks;
79      _ISR_Enable( level );
80
81      tmp *= _TOD_Microseconds_per_tick;
82      ((rtems_clock_time_value *)time_buffer)->microseconds = tmp;
83
84      return RTEMS_SUCCESSFUL;
85  }
86
87  return RTEMS_INTERNAL_ERROR;   /* should never get here */
88
89}
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