forked from OSchip/llvm-project
76 lines
2.2 KiB
Plaintext
76 lines
2.2 KiB
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 <assert.h>
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#import <memory>
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#import <stdatomic.h>
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_Atomic(long) shared_call_counter = 0;
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_Atomic(long) weak_call_counter = 0;
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_Atomic(long) destructor_counter = 0;
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_Atomic(long) weak_destroyed_counter = 0;
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struct MyStruct {
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_Atomic(long) self_counter = 0;
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virtual void shared_call() {
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atomic_fetch_add_explicit(&self_counter, 1, memory_order_relaxed);
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atomic_fetch_add_explicit(&shared_call_counter, 1, memory_order_relaxed);
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}
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virtual void weak_call() {
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atomic_fetch_add_explicit(&weak_call_counter, 1, memory_order_relaxed);
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}
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virtual ~MyStruct() {
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long n = self_counter;
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assert(n == 1000);
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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 < 1000; i++) {
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std::shared_ptr<MyStruct> shared(new MyStruct());
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std::weak_ptr<MyStruct> weak(shared);
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dispatch_group_async(g, q, ^{
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for (int j = 0; j < 1000; j++) {
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std::shared_ptr<MyStruct> shared_copy(shared);
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shared_copy->shared_call();
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}
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});
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dispatch_group_async(g, q, ^{
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for (int j = 0; j < 1000; j++) {
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std::shared_ptr<MyStruct> weak_copy = weak.lock();
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if (weak_copy) {
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weak_copy->weak_call();
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} else {
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atomic_fetch_add_explicit(&weak_destroyed_counter, 1, memory_order_relaxed);
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break;
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}
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}
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});
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}
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dispatch_group_wait(g, DISPATCH_TIME_FOREVER);
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fprintf(stderr, "shared_call_counter = %ld\n", shared_call_counter);
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fprintf(stderr, "weak_call_counter = %ld\n", weak_call_counter);
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fprintf(stderr, "destructor_counter = %ld\n", destructor_counter);
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fprintf(stderr, "weak_destroyed_counter = %ld\n", weak_destroyed_counter);
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fprintf(stderr, "Done.\n");
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}
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// CHECK: Hello world.
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// CHECK: shared_call_counter = 1000000
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// CHECK: destructor_counter = 1000
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// CHECK: Done.
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// CHECK-NOT: WARNING: ThreadSanitizer
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