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1// RUN: %clangxx_tsan %s -o %t2// RUN: %run %t 2>&1 | FileCheck %s3 4// bench.h needs pthread barriers which are not available on OS X5// UNSUPPORTED: darwin6 7#include "bench.h"8 9pthread_mutex_t *mtx;10const int kStride = 16;11 12void thread(int tid) {13  for (int i = 0; i < bench_niter; i++) {14    pthread_mutex_lock(&mtx[tid * kStride]);15    pthread_mutex_unlock(&mtx[tid * kStride]);16  }17}18 19void bench() {20  mtx = (pthread_mutex_t*)malloc(bench_nthread * kStride * sizeof(*mtx));21  for (int i = 0; i < bench_nthread; i++) {22    pthread_mutex_init(&mtx[i * kStride], 0);23    pthread_mutex_lock(&mtx[i * kStride]);24    pthread_mutex_unlock(&mtx[i * kStride]);25  }26  start_thread_group(bench_nthread, thread);27}28 29// CHECK: DONE30 31