Viewing file:  mutexset1.c (1.13 KB) -rw-r--r--
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/* { dg-shouldfail "tsan" } */
/* { dg-additional-options "-ldl" } */
#include <pthread.h>
#include "tsan_barrier.h"
static pthread_barrier_t barrier;
int Global;
pthread_mutex_t mtx;
void *Thread1(void *x) {
barrier_wait(&barrier);
pthread_mutex_lock(&mtx);
Global++;
pthread_mutex_unlock(&mtx);
return NULL;
}
void *Thread2(void *x) {
Global--;
barrier_wait(&barrier);
return NULL;/* { dg-output ".*" } */
}
int main() {
barrier_init(&barrier, 2);
pthread_mutex_init(&mtx, 0);
pthread_t t[2];
pthread_create(&t[0], NULL, Thread1, NULL);
pthread_create(&t[1], NULL, Thread2, NULL);
pthread_join(t[0], NULL);
pthread_join(t[1], NULL);
pthread_mutex_destroy(&mtx);
return 0;
}
/* { dg-output "WARNING: ThreadSanitizer: data race.*(\n|\r\n|\r)" } */
/* { dg-output " Read of size 4 at 0x\[0-9a-f\]+ by thread T1 \\(mutexes: write M\[0-9\]\\):.*" } */
/* { dg-output " Previous write of size 4 at 0x\[0-9a-f\]+ by thread T2:.*" } */
/* { dg-output " Mutex M\[0-9\] \\(0x.*\\) created at:.*" } */
/* { dg-output " #0 pthread_mutex_init.*" } */
/* { dg-output " #1 main (.*mutexset1.c|\\?{2}):\[0-9]+.*" } */
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