|
150
|
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
|
|
|
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
|
|
|
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
|
