llvm-project

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

11
void thread(int tid) {
12
  if (tid == 0) {
13
    for (int i = 0; i < bench_niter; i++)
14
      __atomic_store_n(&x, 0, __ATOMIC_RELEASE);
15
  } else {
16
    for (int i = 0; i < bench_niter; i++)
17
      __atomic_load_n(&x, __ATOMIC_ACQUIRE);
18
  }
19
}
20

21
void bench() {
22
  start_thread_group(bench_nthread, thread);
23
}
24

25
// CHECK: DONE
26

27