test/tsan/bench_local_mutex.cc

   1 // RUN: %clangxx_tsan %s -o %t
   2 // RUN: %t 2>&1 | FileCheck %s
   3
   4 #include "bench.h"
   5
   6 pthread_mutex_t *mtx;
   7 const int kStride = 16;
   8
   9 void thread(int tid) {
  10   for (int i = 0; i < bench_niter; i++) {
  11     pthread_mutex_lock(&mtx[tid * kStride]);
  12     pthread_mutex_unlock(&mtx[tid * kStride]);
  13   }
  14 }
  15
  16 void bench() {
  17   mtx = (pthread_mutex_t*)malloc(bench_nthread * kStride * sizeof(*mtx));
  18   for (int i = 0; i < bench_nthread; i++) {
  19     pthread_mutex_init(&mtx[i * kStride], 0);
  20     pthread_mutex_lock(&mtx[i * kStride]);
  21     pthread_mutex_unlock(&mtx[i * kStride]);
  22   }
  23   start_thread_group(bench_nthread, thread);
  24 }
  25
  26 // CHECK: DONE
  27