Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 1 | // RUN: %clang_tsan %s -o %t -framework Foundation |
| 2 | // RUN: %run %t 2>&1 |
| 3 | |
| 4 | #import <Foundation/Foundation.h> |
| 5 | |
| 6 | void notify_callback(void *context) { |
| 7 | // Do nothing. |
| 8 | } |
| 9 | |
| 10 | int main() { |
| 11 | NSLog(@"Hello world."); |
| 12 | |
| 13 | dispatch_queue_t q = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0); |
| 14 | |
| 15 | for (int i = 0; i < 300000; i++) { |
| 16 | dispatch_group_t g = dispatch_group_create(); |
| 17 | dispatch_group_enter(g); |
| 18 | dispatch_async(q, ^{ |
| 19 | dispatch_group_leave(g); |
| 20 | }); |
| 21 | dispatch_group_notify(g, q, ^{ |
| 22 | // Do nothing. |
| 23 | }); |
| 24 | dispatch_release(g); |
| 25 | } |
| 26 | |
| 27 | for (int i = 0; i < 300000; i++) { |
| 28 | dispatch_group_t g = dispatch_group_create(); |
| 29 | dispatch_group_enter(g); |
| 30 | dispatch_async(q, ^{ |
| 31 | dispatch_group_leave(g); |
| 32 | }); |
| 33 | dispatch_group_notify_f(g, q, nullptr, ¬ify_callback); |
| 34 | dispatch_release(g); |
| 35 | } |
| 36 | |
| 37 | NSLog(@"Done."); |
| 38 | } |
| 39 | |
| 40 | // CHECK: Hello world. |
| 41 | // CHECK: Done. |
| 42 | // CHECK-NOT: WARNING: ThreadSanitizer |
| 43 | // CHECK-NOT: CHECK failed |