compiler-rt/test/tsan/bench_rwmutex.cpp

   1 // RUN: %clangxx_tsan %s -o %t
   2 // RUN: %run %t 2>&1 | FileCheck %s
   3
   4 // bench.h needs pthread barriers which are not available on OS X
   5 // UNSUPPORTED: darwin
   6
   7 #include "bench.h"
   8
   9 pthread_rwlock_t mtx;
  10
  11 void thread(int tid) {
  12   for (int i = 0; i < bench_niter; i++) {
  13     pthread_rwlock_rdlock(&mtx);
  14     pthread_rwlock_unlock(&mtx);
  15   }
  16 }
  17
  18 void bench() {
  19   pthread_rwlock_init(&mtx, 0);
  20   pthread_rwlock_wrlock(&mtx);
  21   pthread_rwlock_unlock(&mtx);
  22   pthread_rwlock_rdlock(&mtx);
  23   pthread_rwlock_unlock(&mtx);
  24   start_thread_group(bench_nthread, thread);
  25 }
  26
  27 // CHECK: DONE
  28