compiler-rt/test/tsan/bench_release_only.cpp

   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