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80 lines
2.0 KiB
C
80 lines
2.0 KiB
C
/* Copyright (C) 1996, 1998, 2001 Free Software Foundation, Inc.
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This file is part of GNU Fortran libU77 library.
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This library is free software; you can redistribute it and/or modify it
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under the terms of the GNU Library General Public License as published
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by the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GNU Fortran 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with GNU Fortran; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <sys/types.h>
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#if HAVE_SYS_PARAM_H
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# include <sys/param.h>
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#endif
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#if TIME_WITH_SYS_TIME
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# include <sys/time.h>
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# include <time.h>
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#else
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# if HAVE_SYS_TIME_H
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# include <sys/time.h>
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# else
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# include <time.h>
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# endif
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#endif
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#if HAVE_SYS_TIMES_H
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# include <sys/times.h>
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#endif
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#include <limits.h>
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#if HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include <errno.h> /* for ENOSYS */
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#include "f2c.h"
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int
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G77_system_clock_0 (integer * count, integer * count_rate,
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integer * count_max)
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{
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#if defined (HAVE_TIMES)
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struct tms buffer;
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unsigned long cnt;
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if (count_rate)
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{
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#ifdef _SC_CLK_TCK
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*count_rate = sysconf (_SC_CLK_TCK);
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#elif defined CLOCKS_PER_SECOND
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*count_rate = CLOCKS_PER_SECOND;
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#elif defined CLK_TCK
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*count_rate = CLK_TCK;
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#elif defined HZ
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*count_rate = HZ;
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#else
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#error Dont know clock tick length
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#endif
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}
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if (count_max) /* optional arg present? */
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*count_max = INT_MAX; /* dubious */
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cnt = times (&buffer);
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if (cnt > (unsigned long) (INT_MAX))
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*count = INT_MAX; /* also dubious */
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else
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*count = cnt;
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return 0;
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#else /* ! HAVE_TIMES */
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errno = ENOSYS;
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return -1;
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#endif /* ! HAVE_TIMES */
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}
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