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951a2682 | 1 | /* Copyright (C) 1991, 1997, 1998, 1999 Free Software Foundation, Inc. |
ebbad4cc | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
ebbad4cc | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
28f540f4 | 8 | |
ebbad4cc UD |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
28f540f4 | 17 | |
28f540f4 | 18 | #include <sys/resource.h> |
28f540f4 | 19 | #include <sys/time.h> |
951a2682 | 20 | #include <time.h> |
28f540f4 RM |
21 | |
22 | #ifdef __GNUC__ | |
23 | __inline | |
24 | #endif | |
25 | static clock_t | |
4875f665 | 26 | timeval_to_clock_t (const struct timeval *tv) |
28f540f4 | 27 | { |
951a2682 RM |
28 | return (clock_t) ((tv->tv_sec * CLOCKS_PER_SEC) + |
29 | (tv->tv_usec * CLOCKS_PER_SEC / 1000000)); | |
28f540f4 RM |
30 | } |
31 | ||
32 | /* Return the time used by the program so far (user time + system time). */ | |
33 | clock_t | |
4875f665 | 34 | clock (void) |
28f540f4 RM |
35 | { |
36 | struct rusage usage; | |
37 | ||
ebbad4cc | 38 | if (__getrusage (RUSAGE_SELF, &usage) < 0) |
28f540f4 RM |
39 | return (clock_t) -1; |
40 | ||
ebbad4cc UD |
41 | return (timeval_to_clock_t (&usage.ru_stime) + |
42 | timeval_to_clock_t (&usage.ru_utime)); | |
28f540f4 | 43 | } |