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/* times.c - times(3) library function */
/* Copyright (C) 1999 Free Software Foundation, Inc.
This file is part of GNU Bash, the Bourne Again SHell.
Bash 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.
Bash 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 Bash; see the file COPYING. If not, write to the Free Software
Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
#include <config.h>
#if !defined (HAVE_TIMES)
#include <sys/types.h>
#include <posixtime.h>
#include <systimes.h>
#if defined (HAVE_SYS_RESOURCE_H) && defined (HAVE_GETRUSAGE)
# include <sys/resource.h>
#endif /* HAVE_SYS_RESOURCE_H && HAVE_GETRUSAGE */
extern long get_clk_tck __P((void));
#define CONVTCK(r) (r.tv_sec * clk_tck + r.tv_usec / (1000000 / clk_tck))
clock_t
times(tms)
struct tms *tms;
{
clock_t rv;
static long clk_tck = -1;
#if defined (HAVE_GETRUSAGE)
struct timeval tv;
struct rusage ru;
if (clk_tck == -1)
clk_tck = get_clk_tck();
if (getrusage(RUSAGE_SELF, &ru) < 0)
return ((clock_t)-1);
tms->tms_utime = CONVTCK(ru.ru_utime);
tms->tms_stime = CONVTCK(ru.ru_stime);
if (getrusage(RUSAGE_CHILDREN, &ru) < 0)
return ((clock_t)-1);
tms->tms_cutime = CONVTCK(ru.ru_utime);
tms->tms_cstime = CONVTCK(ru.ru_stime);
if (gettimeofday(&tv, (struct timezone *) 0) < 0)
return ((clock_t)-1);
rv = (clock_t)(CONVTCK(tv));
#else /* !HAVE_GETRUSAGE */
if (clk_tck == -1)
clk_tck = get_clk_tck();
/* We can't do anything. */
tms->tms_utime = tms->tms_stime = (clock_t)0;
tms->tms_cutime = tms->tms_cstime = (clock_t)0;
rv = (clock_t)time((time_t *)0) * clk_tck;
# endif /* HAVE_GETRUSAGE */
return rv;
}
#endif /* !HAVE_TIMES */
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