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156ab87500
See: * https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc/77319 * https://discourse.llvm.org/t/rfc-project-hand-in-hand-llvm-libc-libc-code-sharing/77701 We're dropping support for C++03 for Zig due to the first change; it would be insane to ship 1018 duplicate header files just for this outdated use case. As a result of the second change, I had to bring in a subset of the headers from llvm-libc since libc++ now depends on these. Hopefully we can continue to get away with not copying the entirety of llvm-libc.
64 lines
2.3 KiB
C++
Vendored
64 lines
2.3 KiB
C++
Vendored
// -*- 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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_LIBCPP_BEGIN_NAMESPACE_STD
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#if _LIBCPP_STD_VER >= 20 && _LIBCPP_HAS_THREADS
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class _LIBCPP_AVAILABILITY_SYNC 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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#endif // _LIBCPP_STD_VER >= 20 && _LIBCPP_HAS_THREADS
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___STOP_TOKEN_STOP_TOKEN_H
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