mirror of git://gcc.gnu.org/git/gcc.git
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
/* { dg-options "-fprofile-arcs -ftest-coverage -pthread -fprofile-update=atomic" } */
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/* { dg-do run { target native } } */
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#include <stdint.h>
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#include <pthread.h>
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#include <assert.h>
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#define NR 5
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pthread_mutex_t cndMs[NR];
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static void *ContentionNoDeadlock_thread(void *start)
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{
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for (uint32_t k = 0; k < 100000; ++k) /* count(500005) */
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{
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int starti = *(int*)start; /* count(500000) */
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for (uint32_t i = starti; i < NR; ++i)
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pthread_mutex_lock (&cndMs[i]);
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for (int32_t i = NR - 1; i >= starti; --i)
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pthread_mutex_unlock (&cndMs[i]);
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}
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}
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int main(int argc, char **argv) {
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for (unsigned i = 0; i < NR; i++)
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cndMs[i] = PTHREAD_MUTEX_INITIALIZER;
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pthread_t t[NR];
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int ids[NR];
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for (int i = 0; i < NR; i++)
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{
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ids[i] = i;
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int r = pthread_create (&t[i], NULL, ContentionNoDeadlock_thread, &ids[i]);
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assert (r == 0); /* count(5) */
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}
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int ret;
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for (int i = 0; i < NR; i++)
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{
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int r = pthread_join (t[i], (void**)&ret);
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assert (r == 0); /* count(5) */
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}
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return 0; /* count(1) */
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}
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/* { dg-final { run-gcov gcov-threads-1.C } } */
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