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45 lines
1.2 KiB
45 lines
1.2 KiB
// RUN: %clang_tsan %s -o %t -framework Foundation
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// RUN: %env_tsan_opts=ignore_interceptors_accesses=1 %deflake %run %t 2>&1 | FileCheck %s
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#import <Foundation/Foundation.h>
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#import "../test.h"
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long global;
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int main() {
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NSLog(@"Hello world.");
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print_address("addr=", 1, &global);
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barrier_init(&barrier, 2);
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dispatch_queue_t q1 = dispatch_queue_create("my.queue1", DISPATCH_QUEUE_CONCURRENT);
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dispatch_queue_t q2 = dispatch_queue_create("my.queue2", DISPATCH_QUEUE_CONCURRENT);
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global = 42;
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dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
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dispatch_sync(q1, ^{
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global = 43;
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barrier_wait(&barrier);
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});
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});
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dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
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dispatch_sync(q2, ^{
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barrier_wait(&barrier);
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global = 44;
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dispatch_sync(dispatch_get_main_queue(), ^{
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CFRunLoopStop(CFRunLoopGetCurrent());
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});
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});
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});
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CFRunLoopRun();
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NSLog(@"Done.");
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}
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// CHECK: Hello world.
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// CHECK: addr=[[ADDR:0x[0-9,a-f]+]]
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// CHECK: WARNING: ThreadSanitizer: data race
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// CHECK: Location is global 'global' {{(of size 8 )?}}at [[ADDR]] (gcd-sync-race.mm.tmp+0x{{[0-9,a-f]+}})
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// CHECK: Done.
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