1 /* $Id$ */
2
3 /*
4 *
5 * Copyright (C) 1998 David Mazieres (dm@uun.org)
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2, or (at
10 * your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 * USA
21 *
22 */
23
24
25 #include "sysconf.h"
26
27 #ifndef HAVE_CLOCK_GETTIME
28
29 #include <sys/resource.h>
30
31 int
clock_gettime(int id,struct timespec * tp)32 clock_gettime (int id, struct timespec *tp)
33 {
34 struct timeval tv;
35 struct rusage ru;
36
37 switch (id) {
38 case CLOCK_REALTIME:
39 if (gettimeofday (&tv, NULL) < 0)
40 return -1;
41 tp->tv_sec = tv.tv_sec;
42 tp->tv_nsec = tv.tv_usec * 1000;
43 return 0;
44 case CLOCK_VIRTUAL:
45 if (getrusage (RUSAGE_SELF, &ru) < 0)
46 return -1;
47 tp->tv_sec = ru.ru_utime.tv_sec;
48 tp->tv_nsec = ru.ru_utime.tv_usec * 1000;
49 return 0;
50 case CLOCK_PROF:
51 if (getrusage (RUSAGE_SELF, &ru) < 0)
52 return -1;
53 tp->tv_sec = (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec);
54 tp->tv_nsec = (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) * 1000;
55 while (tp->tv_nsec > 1000000000) {
56 tp->tv_sec++;
57 tp->tv_nsec -= 1000000000;
58 }
59 return 0;
60 default:
61 errno = EINVAL;
62 return -1;
63 }
64 }
65
66 #endif /* !HAVE_CLOCK_GETTIME */
67