rom/timer/getsystime.c

   1 /*
   2     Copyright © 1995-2007, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: GetSysTime() - Find out what time it is.
   6     Lang: english
   7 */
   8 #include "timer_intern.h"
   9 #include <proto/exec.h>
  10
  11 /*****************************************************************************
  12
  13     NAME */
  14 #include <devices/timer.h>
  15 #include <proto/timer.h>
  16
  17         AROS_LH1(void, GetSysTime,
  18
  19 /*  SYNOPSIS */
  20         AROS_LHA(struct timeval *, dest, A0),
  21
  22 /*  LOCATION */
  23         struct Device *, TimerBase, 11, Timer)
  24
  25 /*  FUNCTION
  26         GetSysTime() will fill in the supplied timeval with the current
  27         system time.
  28
  29     INPUTS
  30         dest    -   A pointer to the timeval you want the time stored in.
  31
  32     RESULT
  33         The timeval "dest" will be filled with the current system time.
  34
  35     NOTES
  36         This function is safe to call from interrupts.
  37
  38     EXAMPLE
  39
  40     BUGS
  41
  42     SEE ALSO
  43         TR_GETSYSTIME, TR_SETSYSTIME
  44
  45     INTERNALS
  46
  47     HISTORY
  48         18-02-1997  iaint   Implemented.
  49
  50 *****************************************************************************/
  51 {
  52     AROS_LIBFUNC_INIT
  53
  54     struct TimerBase *timerBase = (struct TimerBase *)TimerBase;
  55
  56     Disable();
  57     dest->tv_secs = timerBase->tb_CurrentTime.tv_secs;
  58     dest->tv_micro = timerBase->tb_CurrentTime.tv_micro;
  59 #if 0 /* Messes up (accelerates) time if called very often
  60          in short period of time (Doom). */
  61
  62     timerBase->tb_CurrentTime.tv_micro += 1;
  63     if(timerBase->tb_CurrentTime.tv_micro > 999999)
  64     {
  65         timerBase->tb_CurrentTime.tv_secs += 1;
  66         /* MUST be zero since we are only adding 1 */
  67         timerBase->tb_CurrentTime.tv_micro = 0;
  68     }
  69 #endif
  70     Enable();
  71
  72     AROS_LIBFUNC_EXIT
  73 } /* GetSysTime */