| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| |
| // [[nodiscard]] bool operator==(const stop_source& lhs, const stop_source& rhs) noexcept; |
| // Returns: true if lhs and rhs have ownership of the same stop state or if both lhs and rhs do not have ownership of a stop state; otherwise false. |
| |
| #include <cassert> |
| #include <concepts> |
| #include <stop_token> |
| #include <type_traits> |
| |
| #include "test_macros.h" |
| |
| template <class T> |
| concept IsNoThrowEqualityComparable = requires(const T& t1, const T& t2) { |
| { t1 == t2 } noexcept; |
| }; |
| |
| static_assert(IsNoThrowEqualityComparable<std::stop_source>); |
| |
| int main(int, char**) { |
| // both no state |
| { |
| const std::stop_source ss1(std::nostopstate); |
| const std::stop_source ss2(std::nostopstate); |
| assert(ss1 == ss2); |
| assert(!(ss1 != ss2)); |
| } |
| |
| // only one has no state |
| { |
| const std::stop_source ss1(std::nostopstate); |
| const std::stop_source ss2; |
| assert(!(ss1 == ss2)); |
| assert(ss1 != ss2); |
| } |
| |
| // both has states. same state |
| { |
| const std::stop_source ss1; |
| const std::stop_source ss2(ss1); |
| assert(ss1 == ss2); |
| assert(!(ss1 != ss2)); |
| } |
| |
| // both has states. different states |
| { |
| const std::stop_source ss1; |
| const std::stop_source ss2; |
| assert(!(ss1 == ss2)); |
| assert(ss1 != ss2); |
| } |
| |
| return 0; |
| } |