This source file includes following definitions.
- main
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19 #include <config.h>
20
21 #include <sys/resource.h>
22
23 #include "signature.h"
24 SIGNATURE_CHECK (getrusage, int, (int, struct rusage *));
25
26 #include <sys/time.h>
27
28 #include "macros.h"
29
30 volatile unsigned int counter;
31
32 int
33 main (void)
34 {
35 struct rusage before;
36 struct rusage after;
37 int ret;
38
39 ret = getrusage (RUSAGE_SELF, &before);
40 ASSERT (ret == 0);
41
42
43 {
44 struct timeval t0;
45 ASSERT (gettimeofday (&t0, NULL) == 0);
46
47 for (;;)
48 {
49 struct timeval t;
50 int i;
51
52 for (i = 0; i < 1000000; i++)
53 counter++;
54
55 ASSERT (gettimeofday (&t, NULL) == 0);
56 if (t.tv_sec - t0.tv_sec > 1
57 || (t.tv_sec - t0.tv_sec == 1 && t.tv_usec >= t0.tv_usec))
58 break;
59 }
60 }
61
62 ret = getrusage (RUSAGE_SELF, &after);
63 ASSERT (ret == 0);
64
65 ASSERT (after.ru_utime.tv_sec >= before.ru_utime.tv_sec);
66 ASSERT (after.ru_stime.tv_sec >= before.ru_stime.tv_sec);
67 {
68
69 unsigned int spent_utime =
70 (after.ru_utime.tv_sec > before.ru_utime.tv_sec
71 ? (after.ru_utime.tv_sec - before.ru_utime.tv_sec - 1) * 1000000U
72 + after.ru_utime.tv_usec + (1000000U - before.ru_utime.tv_usec)
73 : after.ru_utime.tv_usec - before.ru_utime.tv_usec);
74 unsigned int spent_stime =
75 (after.ru_stime.tv_sec > before.ru_stime.tv_sec
76 ? (after.ru_stime.tv_sec - before.ru_stime.tv_sec - 1) * 1000000U
77 + after.ru_stime.tv_usec + (1000000U - before.ru_stime.tv_usec)
78 : after.ru_stime.tv_usec - before.ru_stime.tv_usec);
79
80 ASSERT (spent_utime + spent_stime <= 2 * 1000000U);
81
82 ASSERT (spent_utime + spent_stime > 10000U);
83 }
84
85 return 0;
86 }