| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // UNSUPPORTED: no-threads |
| // UNSUPPORTED: c++03, c++11, c++14, c++17 |
| // XFAIL: availability-synchronization_library-missing |
| |
| // friend void swap(stop_token& x, stop_token& y) noexcept; |
| |
| #include <cassert> |
| #include <concepts> |
| #include <stop_token> |
| #include <type_traits> |
| |
| #include "test_macros.h" |
| |
| template <class T> |
| concept IsNoThrowFreeSwappable = requires(T& t) { |
| { swap(t, t) } noexcept; |
| }; |
| |
| static_assert(IsNoThrowFreeSwappable<std::stop_token>); |
| |
| int main(int, char**) { |
| { |
| std::stop_token st1; |
| |
| std::stop_source source; |
| auto st2 = source.get_token(); |
| |
| assert(st1 != st2); |
| |
| source.request_stop(); |
| |
| assert(!st1.stop_requested()); |
| assert(st2.stop_requested()); |
| |
| swap(st1, st2); |
| |
| assert(st1 != st2); |
| assert(st1.stop_requested()); |
| assert(!st2.stop_requested()); |
| } |
| |
| return 0; |
| } |