1 /* $OpenBSD: getrusage.c,v 1.3 2003/07/31 21:48:08 deraadt Exp $ */
2 /*
3 * Written by Thomas Nordin <nordin@openbsd.org> 2002 Public Domain.
4 */
5 #include <err.h>
6 #include <limits.h>
7 #include <stddef.h>
8 #include <stdio.h>
9 #include <stdlib.h>
10
11 #include <sys/time.h>
12 #include <sys/resource.h>
13 #include <sys/types.h>
14
15 int
main(int argc,char * argv[])16 main(int argc, char *argv[])
17 {
18 struct timeval utime;
19 struct timeval stime;
20 struct rusage r;
21 int i;
22
23 timerclear(&utime);
24 timerclear(&stime);
25 do {
26 if (getrusage(RUSAGE_SELF, &r) == -1)
27 err(1, "getrusage");
28
29 if (timercmp(&(r.ru_utime), &utime, <))
30 errx(1, "user time decreased");
31 utime = r.ru_utime;
32
33 if (timercmp(&(r.ru_stime), &stime, <))
34 errx(1, "system time decreased");
35 stime = r.ru_stime;
36 } while (utime.tv_sec < 1 && stime.tv_sec < 1);
37
38 return 0;
39 }
40