| 1 | // RUN: %clangxx_tsan %s %link_libcxx_tsan -o %t |
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| 2 | // RUN: %run %t 2>&1 | FileCheck %s --implicit-check-not='ThreadSanitizer' |
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| 3 | |
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| 4 | #include <dispatch/dispatch.h> |
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| 5 | |
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| 6 | #include <atomic> |
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| 7 | #include <cstdio> |
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| 8 | #include <memory> |
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| 9 | |
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| 10 | std::atomic<long> destructor_counter(0); |
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| 11 | |
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| 12 | struct MyStruct { |
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| 13 | virtual ~MyStruct() { |
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| 14 | usleep(10000); |
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| 15 | std::atomic_fetch_add_explicit(&destructor_counter, 1, std::memory_order_relaxed); |
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| 16 | } |
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| 17 | }; |
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| 18 | |
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| 19 | int main(int argc, const char *argv[]) { |
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| 20 | std::fprintf(stderr, "Hello world.\n" ); |
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| 21 | |
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| 22 | dispatch_queue_t q = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0); |
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| 23 | dispatch_group_t g = dispatch_group_create(); |
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| 24 | |
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| 25 | for (int i = 0; i < 100; i++) { |
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| 26 | std::shared_ptr<MyStruct> shared(new MyStruct()); |
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| 27 | |
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| 28 | dispatch_group_async(g, q, ^{ |
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| 29 | shared.get(); // just to make sure the object is captured by the block |
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| 30 | }); |
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| 31 | } |
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| 32 | |
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| 33 | dispatch_group_wait(g, DISPATCH_TIME_FOREVER); |
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| 34 | |
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| 35 | if (destructor_counter != 100) { |
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| 36 | std::abort(); |
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| 37 | } |
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| 38 | |
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| 39 | std::fprintf(stderr, "Done.\n" ); |
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| 40 | } |
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| 41 | |
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| 42 | // CHECK: Hello world. |
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| 43 | // CHECK: Done. |
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| 44 | |
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