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 pthread_rwlock_t mtx; 10*bcaeed49SFangrui Song thread(int tid)11*bcaeed49SFangrui Songvoid thread(int tid) { 12*bcaeed49SFangrui Song for (int i = 0; i < bench_niter; i++) { 13*bcaeed49SFangrui Song pthread_rwlock_rdlock(&mtx); 14*bcaeed49SFangrui Song pthread_rwlock_unlock(&mtx); 15*bcaeed49SFangrui Song } 16*bcaeed49SFangrui Song } 17*bcaeed49SFangrui Song bench()18*bcaeed49SFangrui Songvoid bench() { 19*bcaeed49SFangrui Song pthread_rwlock_init(&mtx, 0); 20*bcaeed49SFangrui Song pthread_rwlock_wrlock(&mtx); 21*bcaeed49SFangrui Song pthread_rwlock_unlock(&mtx); 22*bcaeed49SFangrui Song pthread_rwlock_rdlock(&mtx); 23*bcaeed49SFangrui Song pthread_rwlock_unlock(&mtx); 24*bcaeed49SFangrui Song start_thread_group(bench_nthread, thread); 25*bcaeed49SFangrui Song } 26*bcaeed49SFangrui Song 27*bcaeed49SFangrui Song // CHECK: DONE 28*bcaeed49SFangrui Song 29