ad2fbea797
This has the benefit of consistent placement for these macros (outside the namespace, not inside it). This, in turn, makes it more obvious that the condition applies to the entire namespace scope. Compile times are also reduced a bit, since the compiler doesn't have to open a namespace just to close it again. This is enforced with a clang-tidy check. As a drive-by this also fixes a few macro comments.
63 lines
2.2 KiB
C++
63 lines
2.2 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___STOP_TOKEN_STOP_TOKEN_H
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#define _LIBCPP___STOP_TOKEN_STOP_TOKEN_H
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#include <__config>
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#include <__stop_token/intrusive_shared_ptr.h>
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#include <__stop_token/stop_state.h>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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#if _LIBCPP_STD_VER >= 20 && _LIBCPP_HAS_THREADS
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_LIBCPP_BEGIN_NAMESPACE_STD
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class stop_token {
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public:
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_LIBCPP_HIDE_FROM_ABI stop_token() noexcept = default;
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_LIBCPP_HIDE_FROM_ABI stop_token(const stop_token&) noexcept = default;
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_LIBCPP_HIDE_FROM_ABI stop_token(stop_token&&) noexcept = default;
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_LIBCPP_HIDE_FROM_ABI stop_token& operator=(const stop_token&) noexcept = default;
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_LIBCPP_HIDE_FROM_ABI stop_token& operator=(stop_token&&) noexcept = default;
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_LIBCPP_HIDE_FROM_ABI ~stop_token() = default;
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_LIBCPP_HIDE_FROM_ABI void swap(stop_token& __other) noexcept { __state_.swap(__other.__state_); }
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[[nodiscard]] _LIBCPP_HIDE_FROM_ABI bool stop_requested() const noexcept {
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return __state_ != nullptr && __state_->__stop_requested();
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}
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[[nodiscard]] _LIBCPP_HIDE_FROM_ABI bool stop_possible() const noexcept {
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return __state_ != nullptr && __state_->__stop_possible_for_stop_token();
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}
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[[nodiscard]] _LIBCPP_HIDE_FROM_ABI friend bool operator==(const stop_token&, const stop_token&) noexcept = default;
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_LIBCPP_HIDE_FROM_ABI friend void swap(stop_token& __lhs, stop_token& __rhs) noexcept { __lhs.swap(__rhs); }
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private:
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__intrusive_shared_ptr<__stop_state> __state_;
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friend class stop_source;
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template <class _Tp>
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friend class stop_callback;
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_LIBCPP_HIDE_FROM_ABI explicit stop_token(const __intrusive_shared_ptr<__stop_state>& __state) : __state_(__state) {}
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};
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP_STD_VER >= 20 && _LIBCPP_HAS_THREADS
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#endif // _LIBCPP___STOP_TOKEN_STOP_TOKEN_H
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