glibc/sysdeps/unix/bsd/times.c
Andreas Jaeger 41bdb6e20c Update to LGPL v2.1.
2001-07-06  Paul Eggert  <eggert@twinsun.com>

	* manual/argp.texi: Remove ignored LGPL copyright notice; it's
	not appropriate for documentation anyway.
	* manual/libc-texinfo.sh: "Library General Public License" ->
	"Lesser General Public License".

2001-07-06  Andreas Jaeger  <aj@suse.de>

	* All files under GPL/LGPL version 2: Place under LGPL version
	2.1.
2001-07-06 04:58:11 +00:00

73 lines
2.2 KiB
C

/* Copyright (C) 1991,92,93,95,96,97,1998,2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <stddef.h>
#include <sys/resource.h>
#include <sys/times.h>
#include <sys/time.h>
#include <time.h>
/* Time the program started. */
extern time_t _posix_start_time;
#ifdef __GNUC__
__inline
#endif
static clock_t
timeval_to_clock_t (const struct timeval *tv, clock_t clk_tck)
{
return (clock_t) ((tv->tv_sec * clk_tck) +
(tv->tv_usec * clk_tck / 1000000L));
}
/* Store the CPU time used by this process and all its
dead children (and their dead children) in BUFFER.
Return the elapsed real time, or (clock_t) -1 for errors.
All times are in CLK_TCKths of a second. */
clock_t
__times (buffer)
struct tms *buffer;
{
struct rusage usage;
clock_t clk_tck;
if (buffer == NULL)
{
__set_errno (EINVAL);
return (clock_t) -1;
}
clk_tck = __getclktck ();
if (__getrusage (RUSAGE_SELF, &usage) < 0)
return (clock_t) -1;
buffer->tms_utime = (clock_t) timeval_to_clock_t (&usage.ru_utime, clk_tck);
buffer->tms_stime = (clock_t) timeval_to_clock_t (&usage.ru_stime, clk_tck);
if (__getrusage (RUSAGE_CHILDREN, &usage) < 0)
return (clock_t) -1;
buffer->tms_cutime = (clock_t) timeval_to_clock_t (&usage.ru_utime, clk_tck);
buffer->tms_cstime = (clock_t) timeval_to_clock_t (&usage.ru_stime, clk_tck);
return (time ((time_t *) NULL) - _posix_start_time) * clk_tck;
}
weak_alias (__times, times)