1 #include <u.h>
2 #include <sys/time.h>
3 #include <time.h>
4 #include <sys/resource.h>
5 #define NOPLAN9DEFINES
6 #include <libc.h>
7 
8 long
9 p9times(long *t)
10 {
11 	struct rusage ru, cru;
12 
13 	if(getrusage(0, &ru) < 0 || getrusage(-1, &cru) < 0)
14 		return -1;
15 
16 	t[0] = ru.ru_utime.tv_sec*1000 + ru.ru_utime.tv_usec/1000;
17 	t[1] = ru.ru_stime.tv_sec*1000 + ru.ru_stime.tv_usec/1000;
18 	t[2] = cru.ru_utime.tv_sec*1000 + cru.ru_utime.tv_usec/1000;
19 	t[3] = cru.ru_stime.tv_sec*1000 + cru.ru_stime.tv_usec/1000;
20 
21 	/* BUG */
22 	return t[0]+t[1]+t[2]+t[3];
23 }
24 
25 double
26 p9cputime(void)
27 {
28 	long t[4];
29 	double d;
30 
31 	if(p9times(t) < 0)
32 		return -1.0;
33 
34 	d = (double)t[0]+(double)t[1]+(double)t[2]+(double)t[3];
35 	return d/1000.0;
36 }
37 
38 vlong
39 p9nsec(void)
40 {
41 	struct timeval tv;
42 
43 	if(gettimeofday(&tv, 0) < 0)
44 		return -1;
45 
46 	return (vlong)tv.tv_sec*1000*1000*1000 + tv.tv_usec*1000;
47 }
48 
49 long
50 p9time(long *tt)
51 {
52 	long t;
53 	t = time(0);
54 	if(tt)
55 		*tt = t;
56 	return t;
57 }