35 lines · cpp
1// RUN: %clangxx_tsan -O1 --std=c++11 %s -o %t && %deflake %run %t 2>&1 | FileCheck %s2#include "custom_mutex.h"3 4// Test that Broadcast does not induce parasitic synchronization.5 6Mutex mu(true, 0);7long data;8 9void *thr(void *arg) {10 barrier_wait(&barrier);11 mu.Lock();12 data++;13 mu.Unlock();14 data++;15 mu.Broadcast();16 return 0;17}18 19int main() {20 barrier_init(&barrier, 2);21 pthread_t th;22 pthread_create(&th, 0, thr, 0);23 mu.Lock();24 barrier_wait(&barrier);25 while (data == 0)26 mu.Wait();27 mu.Unlock();28 pthread_join(th, 0);29 fprintf(stderr, "DONE\n");30 return 0;31}32 33// CHECK: ThreadSanitizer: data race34// CHECK: DONE35