1 // RUN: %clangxx_tsan %s -o %t
2 // RUN: %run %t 2>&1 | FileCheck %s
3 
4 // bench.h needs pthread barriers which are not available on OS X
5 // UNSUPPORTED: darwin
6 
7 #include "bench.h"
8 
9 pthread_rwlock_t mtx;
10 
thread(int tid)11 void thread(int tid) {
12   for (int i = 0; i < bench_niter; i++) {
13     pthread_rwlock_rdlock(&mtx);
14     pthread_rwlock_unlock(&mtx);
15   }
16 }
17 
bench()18 void bench() {
19   pthread_rwlock_init(&mtx, 0);
20   pthread_rwlock_wrlock(&mtx);
21   pthread_rwlock_unlock(&mtx);
22   pthread_rwlock_rdlock(&mtx);
23   pthread_rwlock_unlock(&mtx);
24   start_thread_group(bench_nthread, thread);
25 }
26 
27 // CHECK: DONE
28 
29