mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-27 04:41:02 +08:00
45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
/* Copyright (C) 1991, 1997, 1998, 1999 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 Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <sys/resource.h>
|
|
#include <sys/time.h>
|
|
#include <time.h>
|
|
|
|
#ifdef __GNUC__
|
|
__inline
|
|
#endif
|
|
static clock_t
|
|
timeval_to_clock_t (const struct timeval *tv)
|
|
{
|
|
return (clock_t) ((tv->tv_sec * CLOCKS_PER_SEC) +
|
|
(tv->tv_usec * CLOCKS_PER_SEC / 1000000));
|
|
}
|
|
|
|
/* Return the time used by the program so far (user time + system time). */
|
|
clock_t
|
|
clock (void)
|
|
{
|
|
struct rusage usage;
|
|
|
|
if (__getrusage (RUSAGE_SELF, &usage) < 0)
|
|
return (clock_t) -1;
|
|
|
|
return (timeval_to_clock_t (&usage.ru_stime) +
|
|
timeval_to_clock_t (&usage.ru_utime));
|
|
}
|