87 lines
2.4 KiB
C++
87 lines
2.4 KiB
C++
//
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// Copyright (c) 2022 Klemens Morgenstern (klemens.morgenstern@gmx.net)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef BOOST_COBALT_DETAIL_DETACHED_HPP
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#define BOOST_COBALT_DETAIL_DETACHED_HPP
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#include <boost/cobalt/detail/exception.hpp>
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#include <boost/cobalt/detail/forward_cancellation.hpp>
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#include <boost/cobalt/detail/wrapper.hpp>
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#include <boost/cobalt/detail/this_thread.hpp>
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#include <boost/cobalt/op.hpp>
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#include <boost/asio/cancellation_signal.hpp>
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#include <boost/core/exchange.hpp>
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#include <coroutine>
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#include <optional>
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#include <utility>
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#include <boost/asio/bind_allocator.hpp>
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namespace boost::cobalt
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{
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struct detached;
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namespace detail
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{
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struct detached_promise
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: promise_memory_resource_base,
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promise_cancellation_base<asio::cancellation_slot, asio::enable_total_cancellation>,
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promise_throw_if_cancelled_base,
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enable_awaitables<detached_promise>,
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enable_await_allocator<detached_promise>,
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enable_await_executor<detached_promise>,
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enable_await_deferred
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{
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using promise_cancellation_base<asio::cancellation_slot, asio::enable_total_cancellation>::await_transform;
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using promise_throw_if_cancelled_base::await_transform;
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using enable_awaitables<detached_promise>::await_transform;
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using enable_await_allocator<detached_promise>::await_transform;
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using enable_await_executor<detached_promise>::await_transform;
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using enable_await_deferred::await_transform;
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[[nodiscard]] detached get_return_object();
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std::suspend_never await_transform(
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cobalt::this_coro::reset_cancellation_source_t<asio::cancellation_slot> reset) noexcept
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{
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this->reset_cancellation_source(reset.source);
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return {};
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}
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using executor_type = executor;
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executor_type exec;
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const executor_type & get_executor() const {return exec;}
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template<typename ... Args>
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detached_promise(Args & ...args)
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:
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#if !defined(BOOST_COBALT_NO_PMR)
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promise_memory_resource_base(detail::get_memory_resource_from_args(args...)),
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#endif
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exec{detail::get_executor_from_args(args...)}
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{
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}
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std::suspend_never initial_suspend() noexcept {return {};}
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std::suspend_never final_suspend() noexcept {return {};}
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void return_void() {}
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#if !defined(BOOST_NO_EXCEPTIONS)
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void unhandled_exception() { throw ; }
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#endif
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};
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}
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}
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#endif //BOOST_COBALT_DETAIL_DETACHED_HPP
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