forked from OSchip/llvm-project
44 lines
991 B
Plaintext
44 lines
991 B
Plaintext
// RUN: %clangxx_tsan %s -o %t -framework Foundation
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// RUN: %run %t 2>&1 | FileCheck %s
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#import <Foundation/Foundation.h>
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#import <memory>
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#import <stdatomic.h>
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_Atomic(long) destructor_counter = 0;
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struct MyStruct {
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virtual ~MyStruct() {
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usleep(10000);
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atomic_fetch_add_explicit(&destructor_counter, 1, memory_order_relaxed);
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}
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};
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int main(int argc, const char *argv[]) {
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fprintf(stderr, "Hello world.\n");
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dispatch_queue_t q = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
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dispatch_group_t g = dispatch_group_create();
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for (int i = 0; i < 100; i++) {
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std::shared_ptr<MyStruct> shared(new MyStruct());
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dispatch_group_async(g, q, ^{
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shared.get(); // just to make sure the object is captured by the block
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});
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}
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dispatch_group_wait(g, DISPATCH_TIME_FOREVER);
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if (destructor_counter != 100) {
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abort();
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}
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fprintf(stderr, "Done.\n");
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}
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// CHECK: Hello world.
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// CHECK-NOT: WARNING: ThreadSanitizer
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// CHECK: Done.
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