| /* 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 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 <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)); |
| } |