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// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___STOP_TOKEN_STOP_TOKEN_H
#define _LIBCPP___STOP_TOKEN_STOP_TOKEN_H
#include <__config>
#include <__stop_token/intrusive_shared_ptr.h>
#include <__stop_token/stop_state.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_STOP_TOKEN) && !defined(_LIBCPP_HAS_NO_THREADS)
class _LIBCPP_AVAILABILITY_SYNC stop_token {
public:
_LIBCPP_HIDE_FROM_ABI stop_token() noexcept = default;
_LIBCPP_HIDE_FROM_ABI stop_token(const stop_token&) noexcept = default;
_LIBCPP_HIDE_FROM_ABI stop_token(stop_token&&) noexcept = default;
_LIBCPP_HIDE_FROM_ABI stop_token& operator=(const stop_token&) noexcept = default;
_LIBCPP_HIDE_FROM_ABI stop_token& operator=(stop_token&&) noexcept = default;
_LIBCPP_HIDE_FROM_ABI ~stop_token() = default;
_LIBCPP_HIDE_FROM_ABI void swap(stop_token& __other) noexcept { __state_.swap(__other.__state_); }
[[nodiscard]] _LIBCPP_HIDE_FROM_ABI bool stop_requested() const noexcept {
return __state_ != nullptr && __state_->__stop_requested();
}
[[nodiscard]] _LIBCPP_HIDE_FROM_ABI bool stop_possible() const noexcept {
return __state_ != nullptr && __state_->__stop_possible_for_stop_token();
}
[[nodiscard]] _LIBCPP_HIDE_FROM_ABI friend bool operator==(const stop_token&, const stop_token&) noexcept = default;
_LIBCPP_HIDE_FROM_ABI friend void swap(stop_token& __lhs, stop_token& __rhs) noexcept { __lhs.swap(__rhs); }
private:
__intrusive_shared_ptr<__stop_state> __state_;
friend class stop_source;
template <class _Tp>
friend class stop_callback;
_LIBCPP_HIDE_FROM_ABI explicit stop_token(const __intrusive_shared_ptr<__stop_state>& __state) : __state_(__state) {}
};
#endif // _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_STOP_TOKEN) && !defined(_LIBCPP_HAS_NO_THREADS)
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___STOP_TOKEN_STOP_TOKEN_H
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