diff options
Diffstat (limited to 'test/tsan')
-rw-r--r-- | test/tsan/Darwin/objc-synchronize.mm | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/test/tsan/Darwin/objc-synchronize.mm b/test/tsan/Darwin/objc-synchronize.mm new file mode 100644 index 000000000..0bf06370a --- /dev/null +++ b/test/tsan/Darwin/objc-synchronize.mm @@ -0,0 +1,57 @@ +// RUN: %clangxx_tsan %s -o %t -framework Foundation -fobjc-arc %darwin_min_target_with_full_runtime_arc_support +// RUN: %run %t 2>&1 | FileCheck %s + +#import <Foundation/Foundation.h> + +@interface MyClass : NSObject { + long field; +} +@property (nonatomic, readonly) long value; +@end + +dispatch_group_t group; + +@implementation MyClass + +- (void) start { + dispatch_queue_t q = dispatch_queue_create(NULL, NULL); + dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ + for (int i = 0; i < 1000; i++) { + dispatch_async(q, ^{ + @synchronized(self) { + self->field = i; + } + }); + } + }); +} + +- (long) value { + @synchronized(self) { + return self->field; + } +} + +- (void)dealloc { + dispatch_group_leave(group); +} + +@end + +int main() { + group = dispatch_group_create(); + @autoreleasepool { + for (int j = 0; j < 100; ++j) { + dispatch_group_enter(group); + MyClass *obj = [[MyClass alloc] init]; + [obj start]; + long x = obj.value; + (void)x; + } + } + dispatch_group_wait(group, DISPATCH_TIME_FOREVER); + NSLog(@"Hello world"); +} + +// CHECK: Hello world +// CHECK-NOT: WARNING: ThreadSanitizer |