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 6long global; 7 8int main(int argc, const char *argv[]) { 9 fprintf(stderr, "Hello world.\n"); 10 11 dispatch_queue_t q = dispatch_queue_create("my.queue", DISPATCH_QUEUE_SERIAL); 12 dispatch_semaphore_t sem = dispatch_semaphore_create(0); 13 dispatch_source_t timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, q); 14 long long interval_ms = 10; 15 dispatch_source_set_timer(timer, dispatch_time(DISPATCH_TIME_NOW, 0), interval_ms * NSEC_PER_MSEC, 0); 16 dispatch_source_set_event_handler(timer, ^{ 17 fprintf(stderr, "timer\n"); 18 global++; 19 20 if (global > 50) { 21 dispatch_semaphore_signal(sem); 22 } 23 }); 24 dispatch_resume(timer); 25 26 dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER); 27 28 fprintf(stderr, "Done.\n"); 29} 30 31// CHECK: Hello world. 32// CHECK-NOT: WARNING: ThreadSanitizer 33// CHECK: Done. 34