| // 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 |