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