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 int *x;
10 const int kStride = 32;
11 
thread(int tid)12 void thread(int tid) {
13   __atomic_load_n(&x[tid * kStride], __ATOMIC_ACQUIRE);
14   for (int i = 0; i < bench_niter; i++)
15     __atomic_store_n(&x[tid * kStride], 0, __ATOMIC_RELEASE);
16 }
17 
bench()18 void bench() {
19   x = (int*)malloc(bench_nthread * kStride * sizeof(x[0]));
20   for (int i = 0; i < bench_nthread; i++)
21     __atomic_store_n(&x[i * kStride], 0, __ATOMIC_RELEASE);
22   start_thread_group(bench_nthread, thread);
23 }
24 
25 // CHECK: DONE
26 
27