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 Robot#import "../test.h" 7*7c3d14c8STreehugger Robot 8*7c3d14c8STreehugger Robotdispatch_semaphore_t sem; 9*7c3d14c8STreehugger Robot 10*7c3d14c8STreehugger Robotlong global; 11*7c3d14c8STreehugger Robotlong global2; 12*7c3d14c8STreehugger Robot 13*7c3d14c8STreehugger Robotvoid callback(void *context) { 14*7c3d14c8STreehugger Robot global2 = 48; 15*7c3d14c8STreehugger Robot barrier_wait(&barrier); 16*7c3d14c8STreehugger Robot 17*7c3d14c8STreehugger Robot dispatch_semaphore_signal(sem); 18*7c3d14c8STreehugger Robot} 19*7c3d14c8STreehugger Robot 20*7c3d14c8STreehugger Robotint main() { 21*7c3d14c8STreehugger Robot fprintf(stderr, "Hello world.\n"); 22*7c3d14c8STreehugger Robot barrier_init(&barrier, 2); 23*7c3d14c8STreehugger Robot 24*7c3d14c8STreehugger Robot dispatch_queue_t q = dispatch_queue_create("my.queue", DISPATCH_QUEUE_CONCURRENT); 25*7c3d14c8STreehugger Robot dispatch_group_t g = dispatch_group_create(); 26*7c3d14c8STreehugger Robot sem = dispatch_semaphore_create(0); 27*7c3d14c8STreehugger Robot 28*7c3d14c8STreehugger Robot dispatch_group_enter(g); 29*7c3d14c8STreehugger Robot dispatch_async(q, ^{ 30*7c3d14c8STreehugger Robot global = 47; 31*7c3d14c8STreehugger Robot dispatch_group_leave(g); 32*7c3d14c8STreehugger Robot barrier_wait(&barrier); 33*7c3d14c8STreehugger Robot }); 34*7c3d14c8STreehugger Robot dispatch_group_notify(g, q, ^{ 35*7c3d14c8STreehugger Robot global = 48; 36*7c3d14c8STreehugger Robot barrier_wait(&barrier); 37*7c3d14c8STreehugger Robot 38*7c3d14c8STreehugger Robot dispatch_semaphore_signal(sem); 39*7c3d14c8STreehugger Robot }); 40*7c3d14c8STreehugger Robot dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER); 41*7c3d14c8STreehugger Robot 42*7c3d14c8STreehugger Robot dispatch_group_enter(g); 43*7c3d14c8STreehugger Robot dispatch_async(q, ^{ 44*7c3d14c8STreehugger Robot global2 = 47; 45*7c3d14c8STreehugger Robot dispatch_group_leave(g); 46*7c3d14c8STreehugger Robot barrier_wait(&barrier); 47*7c3d14c8STreehugger Robot }); 48*7c3d14c8STreehugger Robot dispatch_group_notify_f(g, q, NULL, &callback); 49*7c3d14c8STreehugger Robot dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER); 50*7c3d14c8STreehugger Robot 51*7c3d14c8STreehugger Robot fprintf(stderr, "Done.\n"); 52*7c3d14c8STreehugger Robot} 53*7c3d14c8STreehugger Robot 54*7c3d14c8STreehugger Robot// CHECK: Hello world. 55*7c3d14c8STreehugger Robot// CHECK-NOT: WARNING: ThreadSanitizer 56*7c3d14c8STreehugger Robot// CHECK: Done. 57