1*bcaeed49SFangrui Song // RUN: %clangxx_tsan %s -o %t 2*bcaeed49SFangrui Song // RUN: %run %t 2>&1 | FileCheck %s 3*bcaeed49SFangrui Song 4*bcaeed49SFangrui Song // bench.h needs pthread barriers which are not available on OS X 5*bcaeed49SFangrui Song // UNSUPPORTED: darwin 6*bcaeed49SFangrui Song 7*bcaeed49SFangrui Song #include "bench.h" 8*bcaeed49SFangrui Song 9*bcaeed49SFangrui Song const int kMutex = 10; 10*bcaeed49SFangrui Song pthread_mutex_t mtx[kMutex]; 11*bcaeed49SFangrui Song thread(int tid)12*bcaeed49SFangrui Songvoid thread(int tid) { 13*bcaeed49SFangrui Song for (int i = 0; i < bench_niter; i++) { 14*bcaeed49SFangrui Song int idx = (i % kMutex); 15*bcaeed49SFangrui Song if (tid == 0) 16*bcaeed49SFangrui Song idx = kMutex - idx - 1; 17*bcaeed49SFangrui Song pthread_mutex_lock(&mtx[idx]); 18*bcaeed49SFangrui Song pthread_mutex_unlock(&mtx[idx]); 19*bcaeed49SFangrui Song } 20*bcaeed49SFangrui Song } 21*bcaeed49SFangrui Song bench()22*bcaeed49SFangrui Songvoid bench() { 23*bcaeed49SFangrui Song for (int i = 0; i < kMutex; i++) 24*bcaeed49SFangrui Song pthread_mutex_init(&mtx[i], 0); 25*bcaeed49SFangrui Song start_thread_group(2, thread); 26*bcaeed49SFangrui Song } 27*bcaeed49SFangrui Song 28*bcaeed49SFangrui Song // CHECK: DONE 29*bcaeed49SFangrui Song 30