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 }
51