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/* Return time used so far, in microseconds.
Copyright (C) 1994 Free Software Foundation, Inc.
This file is part of the libiberty library.
Libiberty is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
Libiberty 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with libiberty; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include "ansidecl.h"
#include "libiberty.h"
/* There are several ways to get elapsed execution time; unfortunately no
single way is available for all host systems, nor are there reliable
ways to find out which way is correct for a given host. */
#include <time.h>
/* These should go away when libiberty uses autoconf. */
#if defined(__sun__) && !defined(__svr4__)
#define HAVE_GETRUSAGE
#endif
#ifdef HAVE_SYSCONF
#define HAVE_TIMES
#endif
#ifdef HAVE_GETRUSAGE
#include <sys/time.h>
#include <sys/resource.h>
#endif
#ifdef HAVE_TIMES
#include <sys/param.h>
#include <sys/times.h>
#endif
/* This is a fallback; if wrong, it will likely make obviously wrong
results. */
#ifndef CLOCKS_PER_SEC
#define CLOCKS_PER_SEC 1
#endif
long
get_run_time ()
{
#ifdef HAVE_GETRUSAGE
struct rusage rusage;
getrusage (0, &rusage);
return (rusage.ru_utime.tv_sec * 1000000 + rusage.ru_utime.tv_usec
+ rusage.ru_stime.tv_sec * 1000000 + rusage.ru_stime.tv_usec);
#else /* ! HAVE_GETRUSAGE */
#ifdef HAVE_TIMES
struct tms tms;
times (&tms);
return (tms.tms_utime + tms.tms_stime) * (1000000 / HZ);
#else /* ! HAVE_TIMES */
/* Fall back on clock and hope it's correctly implemented. */
#if CLOCKS_PER_SEC <= 1000000
return clock () * (1000000 / CLOCKS_PER_SEC);
#else
return clock () / CLOCKS_PER_SEC;
#endif
#endif /* HAVE_TIMES */
#endif /* HAVE_GETRUSAGE */
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.