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/* Implement timing-related runtime actions for CHILL.
Copyright (C) 1992,1993 Free Software Foundation, Inc.
Author: Wilfried Moser
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "rtltypes.h"
#include "rts.h"
EXCEPTION (timerfail);
/*
* function __wait_until
*
* parameters:
* abstime absolute time value
* filename
* linenumber
*
* returns:
* int 0 on success, 1 on failure
*
* exceptions:
* timerfail
*
* abstract:
* check for given argument is valid, calculate how long to wait in
* seconds and call os to do it.
*
*/
int
__wait_until (abstime, filename, linenumber)
unsigned long abstime;
char *filename;
int linenumber;
{
RtsTime now, delta, abs_rtstime;
/* get current time */
__rtstime (&now);
abs_rtstime.secs = abstime;
abs_rtstime.nanosecs = 0;
if (abs_rtstime.nanosecs < now.nanosecs)
{
abs_rtstime.secs--;
abs_rtstime.nanosecs += 1000000000;
}
delta.secs = abs_rtstime.secs - now.secs;
delta.nanosecs = abs_rtstime.nanosecs - now.nanosecs;
if (delta.secs > abs_rtstime.secs)
/* cannot wait into past */
return 1;
return __delay_this (wait_wait, &delta, filename, linenumber) == 1 ? 0 : 1;
}
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