| /* 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, 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| /* As a special exception, if you link this library with other files, |
| some of which are compiled with GCC, to produce an executable, |
| this library does not by itself cause the resulting executable |
| to be covered by the GNU General Public License. |
| This exception does not however invalidate any other reasons why |
| the executable file might be covered by the GNU General Public License. */ |
| |
| #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; |
| } |