1*7c3d14c8STreehugger Robot// RUN: %clang_tsan %s -o %t -framework Foundation 2*7c3d14c8STreehugger Robot// RUN: %env_tsan_opts=ignore_interceptors_accesses=1 %run %t 2>&1 | FileCheck %s 3*7c3d14c8STreehugger Robot 4*7c3d14c8STreehugger Robot#import <Foundation/Foundation.h> 5*7c3d14c8STreehugger Robot 6*7c3d14c8STreehugger Robotlong global; 7*7c3d14c8STreehugger Robot 8*7c3d14c8STreehugger Robotint main(int argc, const char *argv[]) { 9*7c3d14c8STreehugger Robot fprintf(stderr, "Hello world.\n"); 10*7c3d14c8STreehugger Robot 11*7c3d14c8STreehugger Robot dispatch_queue_t q = dispatch_queue_create("my.queue", DISPATCH_QUEUE_SERIAL); 12*7c3d14c8STreehugger Robot dispatch_semaphore_t sem = dispatch_semaphore_create(0); 13*7c3d14c8STreehugger Robot dispatch_source_t timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, q); 14*7c3d14c8STreehugger Robot long long interval_ms = 10; 15*7c3d14c8STreehugger Robot dispatch_source_set_timer(timer, dispatch_time(DISPATCH_TIME_NOW, 0), interval_ms * NSEC_PER_MSEC, 0); 16*7c3d14c8STreehugger Robot dispatch_source_set_event_handler(timer, ^{ 17*7c3d14c8STreehugger Robot fprintf(stderr, "timer\n"); 18*7c3d14c8STreehugger Robot global++; 19*7c3d14c8STreehugger Robot 20*7c3d14c8STreehugger Robot if (global > 50) { 21*7c3d14c8STreehugger Robot dispatch_semaphore_signal(sem); 22*7c3d14c8STreehugger Robot } 23*7c3d14c8STreehugger Robot }); 24*7c3d14c8STreehugger Robot dispatch_resume(timer); 25*7c3d14c8STreehugger Robot 26*7c3d14c8STreehugger Robot dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER); 27*7c3d14c8STreehugger Robot 28*7c3d14c8STreehugger Robot fprintf(stderr, "Done.\n"); 29*7c3d14c8STreehugger Robot} 30*7c3d14c8STreehugger Robot 31*7c3d14c8STreehugger Robot// CHECK: Hello world. 32*7c3d14c8STreehugger Robot// CHECK-NOT: WARNING: ThreadSanitizer 33*7c3d14c8STreehugger Robot// CHECK: Done. 34