1// RUN: %clang_tsan %s -o %t -framework Foundation 2// RUN: %env_tsan_opts=ignore_interceptors_accesses=1 %run %t 2>&1 | FileCheck %s 3 4#import <Foundation/Foundation.h> 5 6#import "../test.h" 7 8long global; 9 10int main() { 11 fprintf(stderr, "Hello world.\n"); 12 print_address("addr=", 1, &global); 13 barrier_init(&barrier, 2); 14 15 dispatch_queue_t q = dispatch_queue_create("my.queue", DISPATCH_QUEUE_CONCURRENT); 16 dispatch_queue_t bgq = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0); 17 18 dispatch_async(bgq, ^{ 19 dispatch_sync(q, ^{ 20 global = 42; 21 }); 22 barrier_wait(&barrier); 23 }); 24 25 dispatch_async(bgq, ^{ 26 barrier_wait(&barrier); 27 dispatch_barrier_sync(q, ^{ 28 global = 43; 29 }); 30 31 dispatch_async(bgq, ^{ 32 barrier_wait(&barrier); 33 global = 44; 34 }); 35 36 barrier_wait(&barrier); 37 38 dispatch_sync(dispatch_get_main_queue(), ^{ 39 CFRunLoopStop(CFRunLoopGetCurrent()); 40 }); 41 }); 42 43 CFRunLoopRun(); 44 fprintf(stderr, "Done.\n"); 45} 46 47// CHECK: Hello world. 48// CHECK: Done. 49// CHECK-NOT: WARNING: ThreadSanitizer 50