| 1 | //===----------------------------------------------------------------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | // |
| 9 | // UNSUPPORTED: no-threads |
| 10 | // UNSUPPORTED: c++03, c++11, c++14, c++17 |
| 11 | |
| 12 | // XFAIL: availability-synchronization_library-missing |
| 13 | |
| 14 | // <semaphore> |
| 15 | |
| 16 | #include <semaphore> |
| 17 | #include <thread> |
| 18 | |
| 19 | #include "make_test_thread.h" |
| 20 | #include "test_macros.h" |
| 21 | |
| 22 | int main(int, char**) |
| 23 | { |
| 24 | std::counting_semaphore<> s(2); |
| 25 | |
| 26 | std::thread t = support::make_test_thread([&](){ |
| 27 | s.acquire(); |
| 28 | }); |
| 29 | t.join(); |
| 30 | |
| 31 | s.acquire(); |
| 32 | |
| 33 | return 0; |
| 34 | } |
| 35 |