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