1*7c3d14c8STreehugger Robot// RUN: %clang_tsan %s -o %t -framework Foundation 2*7c3d14c8STreehugger Robot// RUN: %env_tsan_opts=ignore_interceptors_accesses=1 %deflake %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 Robotlong global; 9*7c3d14c8STreehugger Robot 10*7c3d14c8STreehugger Robotint main() { 11*7c3d14c8STreehugger Robot fprintf(stderr, "Hello world.\n"); 12*7c3d14c8STreehugger Robot print_address("addr=", 1, &global); 13*7c3d14c8STreehugger Robot barrier_init(&barrier, 2); 14*7c3d14c8STreehugger Robot 15*7c3d14c8STreehugger Robot dispatch_queue_t q = dispatch_queue_create("my.queue", DISPATCH_QUEUE_CONCURRENT); 16*7c3d14c8STreehugger Robot dispatch_queue_t bgq = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0); 17*7c3d14c8STreehugger Robot 18*7c3d14c8STreehugger Robot dispatch_barrier_sync(q, ^{ 19*7c3d14c8STreehugger Robot global = 42; 20*7c3d14c8STreehugger Robot }); 21*7c3d14c8STreehugger Robot 22*7c3d14c8STreehugger Robot dispatch_async(bgq, ^{ 23*7c3d14c8STreehugger Robot dispatch_sync(q, ^{ 24*7c3d14c8STreehugger Robot global = 43; 25*7c3d14c8STreehugger Robot barrier_wait(&barrier); 26*7c3d14c8STreehugger Robot }); 27*7c3d14c8STreehugger Robot }); 28*7c3d14c8STreehugger Robot 29*7c3d14c8STreehugger Robot dispatch_async(bgq, ^{ 30*7c3d14c8STreehugger Robot dispatch_sync(q, ^{ 31*7c3d14c8STreehugger Robot barrier_wait(&barrier); 32*7c3d14c8STreehugger Robot global = 44; 33*7c3d14c8STreehugger Robot 34*7c3d14c8STreehugger Robot dispatch_sync(dispatch_get_main_queue(), ^{ 35*7c3d14c8STreehugger Robot CFRunLoopStop(CFRunLoopGetCurrent()); 36*7c3d14c8STreehugger Robot }); 37*7c3d14c8STreehugger Robot }); 38*7c3d14c8STreehugger Robot }); 39*7c3d14c8STreehugger Robot 40*7c3d14c8STreehugger Robot CFRunLoopRun(); 41*7c3d14c8STreehugger Robot fprintf(stderr, "Done.\n"); 42*7c3d14c8STreehugger Robot} 43*7c3d14c8STreehugger Robot 44*7c3d14c8STreehugger Robot// CHECK: Hello world. 45*7c3d14c8STreehugger Robot// CHECK: addr=[[ADDR:0x[0-9,a-f]+]] 46*7c3d14c8STreehugger Robot// CHECK: WARNING: ThreadSanitizer: data race 47*7c3d14c8STreehugger Robot// CHECK: Location is global 'global' {{(of size 8 )?}}at [[ADDR]] (gcd-barrier-race.mm.tmp+0x{{[0-9,a-f]+}}) 48*7c3d14c8STreehugger Robot// CHECK: Done. 49