31 lines · cpp
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