106c3fb27SDimitry Andric // -*- C++ -*- 206c3fb27SDimitry Andric //===----------------------------------------------------------------------===// 306c3fb27SDimitry Andric // 406c3fb27SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 506c3fb27SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 606c3fb27SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 706c3fb27SDimitry Andric // 806c3fb27SDimitry Andric //===----------------------------------------------------------------------===// 906c3fb27SDimitry Andric 1006c3fb27SDimitry Andric #ifndef _LIBCPP___STOP_TOKEN_STOP_TOKEN_H 1106c3fb27SDimitry Andric #define _LIBCPP___STOP_TOKEN_STOP_TOKEN_H 1206c3fb27SDimitry Andric 1306c3fb27SDimitry Andric #include <__config> 1406c3fb27SDimitry Andric #include <__stop_token/intrusive_shared_ptr.h> 1506c3fb27SDimitry Andric #include <__stop_token/stop_state.h> 1606c3fb27SDimitry Andric 1706c3fb27SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 1806c3fb27SDimitry Andric # pragma GCC system_header 1906c3fb27SDimitry Andric #endif 2006c3fb27SDimitry Andric 2106c3fb27SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 2206c3fb27SDimitry Andric 23*5f757f3fSDimitry Andric #if _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_STOP_TOKEN) && !defined(_LIBCPP_HAS_NO_THREADS) 2406c3fb27SDimitry Andric 2506c3fb27SDimitry Andric class _LIBCPP_AVAILABILITY_SYNC stop_token { 2606c3fb27SDimitry Andric public: 2706c3fb27SDimitry Andric _LIBCPP_HIDE_FROM_ABI stop_token() noexcept = default; 2806c3fb27SDimitry Andric 2906c3fb27SDimitry Andric _LIBCPP_HIDE_FROM_ABI stop_token(const stop_token&) noexcept = default; 3006c3fb27SDimitry Andric _LIBCPP_HIDE_FROM_ABI stop_token(stop_token&&) noexcept = default; 3106c3fb27SDimitry Andric _LIBCPP_HIDE_FROM_ABI stop_token& operator=(const stop_token&) noexcept = default; 3206c3fb27SDimitry Andric _LIBCPP_HIDE_FROM_ABI stop_token& operator=(stop_token&&) noexcept = default; 3306c3fb27SDimitry Andric _LIBCPP_HIDE_FROM_ABI ~stop_token() = default; 3406c3fb27SDimitry Andric swap(stop_token & __other)3506c3fb27SDimitry Andric _LIBCPP_HIDE_FROM_ABI void swap(stop_token& __other) noexcept { __state_.swap(__other.__state_); } 3606c3fb27SDimitry Andric stop_requested()3706c3fb27SDimitry Andric [[nodiscard]] _LIBCPP_HIDE_FROM_ABI bool stop_requested() const noexcept { 3806c3fb27SDimitry Andric return __state_ != nullptr && __state_->__stop_requested(); 3906c3fb27SDimitry Andric } 4006c3fb27SDimitry Andric stop_possible()4106c3fb27SDimitry Andric [[nodiscard]] _LIBCPP_HIDE_FROM_ABI bool stop_possible() const noexcept { 4206c3fb27SDimitry Andric return __state_ != nullptr && __state_->__stop_possible_for_stop_token(); 4306c3fb27SDimitry Andric } 4406c3fb27SDimitry Andric 4506c3fb27SDimitry Andric [[nodiscard]] _LIBCPP_HIDE_FROM_ABI friend bool operator==(const stop_token&, const stop_token&) noexcept = default; 4606c3fb27SDimitry Andric swap(stop_token & __lhs,stop_token & __rhs)4706c3fb27SDimitry Andric _LIBCPP_HIDE_FROM_ABI friend void swap(stop_token& __lhs, stop_token& __rhs) noexcept { __lhs.swap(__rhs); } 4806c3fb27SDimitry Andric 4906c3fb27SDimitry Andric private: 5006c3fb27SDimitry Andric __intrusive_shared_ptr<__stop_state> __state_; 5106c3fb27SDimitry Andric 5206c3fb27SDimitry Andric friend class stop_source; 5306c3fb27SDimitry Andric template <class _Tp> 5406c3fb27SDimitry Andric friend class stop_callback; 5506c3fb27SDimitry Andric stop_token(const __intrusive_shared_ptr<__stop_state> & __state)5606c3fb27SDimitry Andric _LIBCPP_HIDE_FROM_ABI explicit stop_token(const __intrusive_shared_ptr<__stop_state>& __state) : __state_(__state) {} 5706c3fb27SDimitry Andric }; 5806c3fb27SDimitry Andric 59*5f757f3fSDimitry Andric #endif // _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_STOP_TOKEN) && !defined(_LIBCPP_HAS_NO_THREADS) 6006c3fb27SDimitry Andric 6106c3fb27SDimitry Andric _LIBCPP_END_NAMESPACE_STD 6206c3fb27SDimitry Andric 6306c3fb27SDimitry Andric #endif // _LIBCPP___STOP_TOKEN_STOP_TOKEN_H 64