1695138caSHui //===----------------------------------------------------------------------===// 2695138caSHui // 3695138caSHui // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4695138caSHui // See https://llvm.org/LICENSE.txt for license information. 5695138caSHui // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6695138caSHui // 7695138caSHui //===----------------------------------------------------------------------===// 8695138caSHui // 9695138caSHui // UNSUPPORTED: no-threads 10695138caSHui // UNSUPPORTED: c++03, c++11, c++14, c++17 11695138caSHui // XFAIL: availability-synchronization_library-missing 12695138caSHui 13695138caSHui // [[nodiscard]] bool request_stop() noexcept; 14695138caSHui 15695138caSHui #include <cassert> 16695138caSHui #include <concepts> 17695138caSHui #include <stop_token> 18695138caSHui #include <thread> 19695138caSHui #include <type_traits> 20695138caSHui 21*475e1543SLouis Dionne #include "make_test_thread.h" 22695138caSHui #include "test_macros.h" 23695138caSHui 24695138caSHui static_assert(noexcept(std::declval<std::jthread&>().request_stop())); 25695138caSHui 26695138caSHui int main(int, char**) { 27695138caSHui // Represents a thread 28695138caSHui { 29*475e1543SLouis Dionne std::jthread jt = support::make_test_jthread([] {}); 30695138caSHui auto st = jt.get_stop_token(); 31695138caSHui assert(!st.stop_requested()); 32695138caSHui std::same_as<bool> decltype(auto) result = jt.request_stop(); 33695138caSHui assert(result); 34695138caSHui assert(st.stop_requested()); 35695138caSHui } 36695138caSHui 37695138caSHui // Does not represent a thread 38695138caSHui { 39695138caSHui std::jthread jt{}; 40695138caSHui std::same_as<bool> decltype(auto) result = jt.request_stop(); 41695138caSHui assert(!result); 42695138caSHui } 43695138caSHui 44695138caSHui return 0; 45695138caSHui } 46