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111
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1 /* { dg-options "-fprofile-arcs -ftest-coverage -pthread -fprofile-update=atomic" } */
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2 /* { dg-do run { target native } } */
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3 /* { dg-require-effective-target profile_update_atomic } */
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4
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5 #include <stdint.h>
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6 #include <pthread.h>
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7 #include <assert.h>
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8
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9 #define NR 5
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10
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11 pthread_mutex_t cndMs[NR];
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12 static void *ContentionNoDeadlock_thread(void *start)
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13 {
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14 for (uint32_t k = 0; k < 100000; ++k) /* count(500005) */
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15 {
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16 int starti = *(int*)start; /* count(500000) */
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17 for (uint32_t i = starti; i < NR; ++i)
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18 pthread_mutex_lock (&cndMs[i]);
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19 for (int32_t i = NR - 1; i >= starti; --i)
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20 pthread_mutex_unlock (&cndMs[i]);
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21 }
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131
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22
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23 return 0;
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111
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24 }
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25 int main(int argc, char **argv) {
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26 for (unsigned i = 0; i < NR; i++)
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27 cndMs[i] = PTHREAD_MUTEX_INITIALIZER;
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28
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29 pthread_t t[NR];
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30 int ids[NR];
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31
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32 for (int i = 0; i < NR; i++)
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33 {
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34 ids[i] = i;
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35 int r = pthread_create (&t[i], NULL, ContentionNoDeadlock_thread, &ids[i]);
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131
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36 assert (r == 0); /* count(5*) */
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111
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37 }
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38
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39 int ret;
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40 for (int i = 0; i < NR; i++)
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41 {
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42 int r = pthread_join (t[i], (void**)&ret);
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131
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43 assert (r == 0); /* count(5*) */
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111
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44 }
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45
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46 return 0; /* count(1) */
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47 }
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48
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49 /* { dg-final { run-gcov gcov-threads-1.C } } */
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