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// RUN: %clangxx_tsan -O1 --std=c++11 %s -o %t && %deflake %run %t 2>&1 | FileCheck %s
#include "custom_mutex.h"
// Test that Broadcast does not induce parasitic synchronization.
Mutex mu(true, 0);
long data;
void *thr(void *arg) {
barrier_wait(&barrier);
mu.Lock();
data++;
mu.Unlock();
data++;
mu.Broadcast();
return 0;
}
int main() {
barrier_init(&barrier, 2);
pthread_t th;
pthread_create(&th, 0, thr, 0);
mu.Lock();
barrier_wait(&barrier);
while (data == 0)
mu.Wait();
mu.Unlock();
pthread_join(th, 0);
fprintf(stderr, "DONE\n");
return 0;
}
// CHECK: ThreadSanitizer: data race
// CHECK: DONE
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