| /* 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 "rts.h" |
| |
| /* |
| * function __remaintime |
| * |
| * parameters: |
| * since pointer to the initial RtsTime |
| * dur the duration value |
| * t pointer to the remaining RtsTime |
| * |
| * returns: |
| * int 0 .. there is a remaining time |
| * 1 .. there is no remaining time |
| * |
| * exceptions: |
| * none |
| * |
| * abstract: |
| * This function writes to t the remaining duration value in RtsTime format |
| * from a given start (since) and the current RtsTime. |
| * |
| */ |
| |
| extern void __convert_duration_rtstime (unsigned long dur, RtsTime *t); |
| |
| int |
| __remaintime (since, dur, t) |
| RtsTime *since; |
| unsigned long dur; |
| RtsTime *t; |
| { |
| RtsTime now, dur_in_rtstime, tmp, diff; |
| |
| __rtstime (&now); |
| __convert_duration_rtstime (dur, &dur_in_rtstime); |
| |
| tmp.secs = since->secs; |
| tmp.nanosecs = since->nanosecs; |
| |
| /* calculate the difference of absolute times */ |
| if (tmp.nanosecs > now.nanosecs) |
| { |
| tmp.secs--; |
| tmp.nanosecs += 1000000000; |
| } |
| diff.secs = now.secs - tmp.secs; |
| diff.nanosecs = now.nanosecs - tmp.nanosecs; |
| |
| /* substract diff from duration */ |
| if (diff.nanosecs > dur_in_rtstime.nanosecs) |
| { |
| dur_in_rtstime.secs--; |
| dur_in_rtstime.nanosecs += 1000000000; |
| } |
| |
| t->secs = dur_in_rtstime.secs - diff.secs; |
| t->nanosecs = dur_in_rtstime.nanosecs - diff.nanosecs; |
| |
| if (t->secs > dur_in_rtstime.secs) |
| return 1; |
| else |
| return 0; |
| } |