1 // RUN: %clang_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s 2 3 // pthread barriers are not available on OS X 4 // UNSUPPORTED: darwin 5 6 #include <pthread.h> 7 #include <stdio.h> 8 #include <stddef.h> 9 #include <unistd.h> 10 11 pthread_barrier_t B; 12 int Global; 13 14 void *Thread1(void *x) { 15 if (pthread_barrier_wait(&B) == PTHREAD_BARRIER_SERIAL_THREAD) 16 pthread_barrier_destroy(&B); 17 return NULL; 18 } 19 20 void *Thread2(void *x) { 21 if (pthread_barrier_wait(&B) == PTHREAD_BARRIER_SERIAL_THREAD) 22 pthread_barrier_destroy(&B); 23 return NULL; 24 } 25 26 int main() { 27 pthread_barrier_init(&B, 0, 2); 28 pthread_t t; 29 pthread_create(&t, NULL, Thread1, NULL); 30 Thread2(0); 31 pthread_join(t, NULL); 32 return 0; 33 } 34 35 // CHECK: WARNING: ThreadSanitizer: data race 36
