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comparison libgomp/testsuite/libgomp.c/barrier-1.c @ 0:a06113de4d67

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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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1 /* Trivial test of barrier. */
2
3 #include <omp.h>
4 #include <sys/time.h>
5 #include <unistd.h>
6 #include <assert.h>
7 #include "libgomp_g.h"
8
9
10 struct timeval stamps[3][3];
11
12 static void function(void *dummy)
13 {
14 int iam = omp_get_thread_num ();
15
16 gettimeofday (&stamps[iam][0], NULL);
17 if (iam == 0)
18 usleep (10);
19
20 GOMP_barrier ();
21
22 if (iam == 0)
23 {
24 gettimeofday (&stamps[0][1], NULL);
25 usleep (10);
26 }
27
28 GOMP_barrier ();
29
30 gettimeofday (&stamps[iam][2], NULL);
31 }
32
33 int main()
34 {
35 omp_set_dynamic (0);
36
37 GOMP_parallel_start (function, NULL, 3);
38 function (NULL);
39 GOMP_parallel_end ();
40
41 assert (!timercmp (&stamps[0][0], &stamps[0][1], >));
42 assert (!timercmp (&stamps[1][0], &stamps[0][1], >));
43 assert (!timercmp (&stamps[2][0], &stamps[0][1], >));
44
45 assert (!timercmp (&stamps[0][1], &stamps[0][2], >));
46 assert (!timercmp (&stamps[0][1], &stamps[1][2], >));
47 assert (!timercmp (&stamps[0][1], &stamps[2][2], >));
48
49 return 0;
50 }