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Diffstat (limited to '3rdparty/asio/include/asio/execution/submit.hpp')
-rw-r--r-- | 3rdparty/asio/include/asio/execution/submit.hpp | 450 |
1 files changed, 450 insertions, 0 deletions
diff --git a/3rdparty/asio/include/asio/execution/submit.hpp b/3rdparty/asio/include/asio/execution/submit.hpp new file mode 100644 index 00000000000..7a0bddf83be --- /dev/null +++ b/3rdparty/asio/include/asio/execution/submit.hpp @@ -0,0 +1,450 @@ +// +// execution/submit.hpp +// ~~~~~~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2021 Christopher M. Kohlhoff (chris at kohlhoff dot com) +// +// Distributed under the Boost Software License, Version 1.0. (See accompanying +// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) +// + +#ifndef ASIO_EXECUTION_SUBMIT_HPP +#define ASIO_EXECUTION_SUBMIT_HPP + +#if defined(_MSC_VER) && (_MSC_VER >= 1200) +# pragma once +#endif // defined(_MSC_VER) && (_MSC_VER >= 1200) + +#include "asio/detail/config.hpp" +#include "asio/detail/type_traits.hpp" +#include "asio/execution/detail/submit_receiver.hpp" +#include "asio/execution/executor.hpp" +#include "asio/execution/receiver.hpp" +#include "asio/execution/sender.hpp" +#include "asio/execution/start.hpp" +#include "asio/traits/submit_member.hpp" +#include "asio/traits/submit_free.hpp" + +#include "asio/detail/push_options.hpp" + +#if defined(GENERATING_DOCUMENTATION) + +namespace asio { +namespace execution { + +/// A customisation point that submits a sender to a receiver. +/** + * The name <tt>execution::submit</tt> denotes a customisation point object. For + * some subexpressions <tt>s</tt> and <tt>r</tt>, let <tt>S</tt> be a type such + * that <tt>decltype((s))</tt> is <tt>S</tt> and let <tt>R</tt> be a type such + * that <tt>decltype((r))</tt> is <tt>R</tt>. The expression + * <tt>execution::submit(s, r)</tt> is ill-formed if <tt>sender_to<S, R></tt> is + * not <tt>true</tt>. Otherwise, it is expression-equivalent to: + * + * @li <tt>s.submit(r)</tt>, if that expression is valid and <tt>S</tt> models + * <tt>sender</tt>. If the function selected does not submit the receiver + * object <tt>r</tt> via the sender <tt>s</tt>, the program is ill-formed with + * no diagnostic required. + * + * @li Otherwise, <tt>submit(s, r)</tt>, if that expression is valid and + * <tt>S</tt> models <tt>sender</tt>, with overload resolution performed in a + * context that includes the declaration <tt>void submit();</tt> and that does + * not include a declaration of <tt>execution::submit</tt>. If the function + * selected by overload resolution does not submit the receiver object + * <tt>r</tt> via the sender <tt>s</tt>, the program is ill-formed with no + * diagnostic required. + * + * @li Otherwise, <tt>execution::start((new submit_receiver<S, + * R>{s,r})->state_)</tt>, where <tt>submit_receiver</tt> is an + * implementation-defined class template equivalent to: + * @code template<class S, class R> + * struct submit_receiver { + * struct wrap { + * submit_receiver * p_; + * template<class...As> + * requires receiver_of<R, As...> + * void set_value(As&&... as) && + * noexcept(is_nothrow_receiver_of_v<R, As...>) { + * execution::set_value(std::move(p_->r_), (As&&) as...); + * delete p_; + * } + * template<class E> + * requires receiver<R, E> + * void set_error(E&& e) && noexcept { + * execution::set_error(std::move(p_->r_), (E&&) e); + * delete p_; + * } + * void set_done() && noexcept { + * execution::set_done(std::move(p_->r_)); + * delete p_; + * } + * }; + * remove_cvref_t<R> r_; + * connect_result_t<S, wrap> state_; + * submit_receiver(S&& s, R&& r) + * : r_((R&&) r) + * , state_(execution::connect((S&&) s, wrap{this})) {} + * }; + * @endcode + */ +inline constexpr unspecified submit = unspecified; + +/// A type trait that determines whether a @c submit expression is +/// well-formed. +/** + * Class template @c can_submit is a trait that is derived from + * @c true_type if the expression <tt>execution::submit(std::declval<R>(), + * std::declval<E>())</tt> is well formed; otherwise @c false_type. + */ +template <typename S, typename R> +struct can_submit : + integral_constant<bool, automatically_determined> +{ +}; + +} // namespace execution +} // namespace asio + +#else // defined(GENERATING_DOCUMENTATION) + +namespace asio_execution_submit_fn { + +using asio::declval; +using asio::enable_if; +using asio::execution::is_sender_to; +using asio::traits::submit_free; +using asio::traits::submit_member; + +void submit(); + +enum overload_type +{ + call_member, + call_free, + adapter, + ill_formed +}; + +template <typename S, typename R, typename = void, + typename = void, typename = void> +struct call_traits +{ + ASIO_STATIC_CONSTEXPR(overload_type, overload = ill_formed); + ASIO_STATIC_CONSTEXPR(bool, is_noexcept = false); + typedef void result_type; +}; + +template <typename S, typename R> +struct call_traits<S, void(R), + typename enable_if< + submit_member<S, R>::is_valid + >::type, + typename enable_if< + is_sender_to<S, R>::value + >::type> : + submit_member<S, R> +{ + ASIO_STATIC_CONSTEXPR(overload_type, overload = call_member); +}; + +template <typename S, typename R> +struct call_traits<S, void(R), + typename enable_if< + !submit_member<S, R>::is_valid + >::type, + typename enable_if< + submit_free<S, R>::is_valid + >::type, + typename enable_if< + is_sender_to<S, R>::value + >::type> : + submit_free<S, R> +{ + ASIO_STATIC_CONSTEXPR(overload_type, overload = call_free); +}; + +template <typename S, typename R> +struct call_traits<S, void(R), + typename enable_if< + !submit_member<S, R>::is_valid + >::type, + typename enable_if< + !submit_free<S, R>::is_valid + >::type, + typename enable_if< + is_sender_to<S, R>::value + >::type> +{ + ASIO_STATIC_CONSTEXPR(overload_type, overload = adapter); + ASIO_STATIC_CONSTEXPR(bool, is_noexcept = false); + typedef void result_type; +}; + +struct impl +{ +#if defined(ASIO_HAS_MOVE) + template <typename S, typename R> + ASIO_CONSTEXPR typename enable_if< + call_traits<S, void(R)>::overload == call_member, + typename call_traits<S, void(R)>::result_type + >::type + operator()(S&& s, R&& r) const + ASIO_NOEXCEPT_IF(( + call_traits<S, void(R)>::is_noexcept)) + { + return ASIO_MOVE_CAST(S)(s).submit(ASIO_MOVE_CAST(R)(r)); + } + + template <typename S, typename R> + ASIO_CONSTEXPR typename enable_if< + call_traits<S, void(R)>::overload == call_free, + typename call_traits<S, void(R)>::result_type + >::type + operator()(S&& s, R&& r) const + ASIO_NOEXCEPT_IF(( + call_traits<S, void(R)>::is_noexcept)) + { + return submit(ASIO_MOVE_CAST(S)(s), ASIO_MOVE_CAST(R)(r)); + } + + template <typename S, typename R> + ASIO_CONSTEXPR typename enable_if< + call_traits<S, void(R)>::overload == adapter, + typename call_traits<S, void(R)>::result_type + >::type + operator()(S&& s, R&& r) const + ASIO_NOEXCEPT_IF(( + call_traits<S, void(R)>::is_noexcept)) + { + return asio::execution::start( + (new asio::execution::detail::submit_receiver<S, R>( + ASIO_MOVE_CAST(S)(s), ASIO_MOVE_CAST(R)(r)))->state_); + } +#else // defined(ASIO_HAS_MOVE) + template <typename S, typename R> + ASIO_CONSTEXPR typename enable_if< + call_traits<S&, void(R&)>::overload == call_member, + typename call_traits<S&, void(R&)>::result_type + >::type + operator()(S& s, R& r) const + ASIO_NOEXCEPT_IF(( + call_traits<S&, void(R&)>::is_noexcept)) + { + return s.submit(r); + } + + template <typename S, typename R> + ASIO_CONSTEXPR typename enable_if< + call_traits<const S&, void(R&)>::overload == call_member, + typename call_traits<const S&, void(R&)>::result_type + >::type + operator()(const S& s, R& r) const + ASIO_NOEXCEPT_IF(( + call_traits<const S&, void(R&)>::is_noexcept)) + { + return s.submit(r); + } + + template <typename S, typename R> + ASIO_CONSTEXPR typename enable_if< + call_traits<S&, void(R&)>::overload == call_free, + typename call_traits<S&, void(R&)>::result_type + >::type + operator()(S& s, R& r) const + ASIO_NOEXCEPT_IF(( + call_traits<S&, void(R&)>::is_noexcept)) + { + return submit(s, r); + } + + template <typename S, typename R> + ASIO_CONSTEXPR typename enable_if< + call_traits<const S&, void(R&)>::overload == call_free, + typename call_traits<const S&, void(R&)>::result_type + >::type + operator()(const S& s, R& r) const + ASIO_NOEXCEPT_IF(( + call_traits<const S&, void(R&)>::is_noexcept)) + { + return submit(s, r); + } + + template <typename S, typename R> + ASIO_CONSTEXPR typename enable_if< + call_traits<S&, void(R&)>::overload == adapter, + typename call_traits<S&, void(R&)>::result_type + >::type + operator()(S& s, R& r) const + ASIO_NOEXCEPT_IF(( + call_traits<S&, void(R&)>::is_noexcept)) + { + return asio::execution::start( + (new asio::execution::detail::submit_receiver< + S&, R&>(s, r))->state_); + } + + template <typename S, typename R> + ASIO_CONSTEXPR typename enable_if< + call_traits<const S&, void(R&)>::overload == adapter, + typename call_traits<const S&, void(R&)>::result_type + >::type + operator()(const S& s, R& r) const + ASIO_NOEXCEPT_IF(( + call_traits<const S&, void(R&)>::is_noexcept)) + { + asio::execution::start( + (new asio::execution::detail::submit_receiver< + const S&, R&>(s, r))->state_); + } + + template <typename S, typename R> + ASIO_CONSTEXPR typename enable_if< + call_traits<S&, void(const R&)>::overload == call_member, + typename call_traits<S&, void(const R&)>::result_type + >::type + operator()(S& s, const R& r) const + ASIO_NOEXCEPT_IF(( + call_traits<S&, void(const R&)>::is_noexcept)) + { + return s.submit(r); + } + + template <typename S, typename R> + ASIO_CONSTEXPR typename enable_if< + call_traits<const S&, void(const R&)>::overload == call_member, + typename call_traits<const S&, void(const R&)>::result_type + >::type + operator()(const S& s, const R& r) const + ASIO_NOEXCEPT_IF(( + call_traits<const S&, void(const R&)>::is_noexcept)) + { + return s.submit(r); + } + + template <typename S, typename R> + ASIO_CONSTEXPR typename enable_if< + call_traits<S&, void(const R&)>::overload == call_free, + typename call_traits<S&, void(const R&)>::result_type + >::type + operator()(S& s, const R& r) const + ASIO_NOEXCEPT_IF(( + call_traits<S&, void(const R&)>::is_noexcept)) + { + return submit(s, r); + } + + template <typename S, typename R> + ASIO_CONSTEXPR typename enable_if< + call_traits<const S&, void(const R&)>::overload == call_free, + typename call_traits<const S&, void(const R&)>::result_type + >::type + operator()(const S& s, const R& r) const + ASIO_NOEXCEPT_IF(( + call_traits<const S&, void(const R&)>::is_noexcept)) + { + return submit(s, r); + } + + template <typename S, typename R> + ASIO_CONSTEXPR typename enable_if< + call_traits<S&, void(const R&)>::overload == adapter, + typename call_traits<S&, void(const R&)>::result_type + >::type + operator()(S& s, const R& r) const + ASIO_NOEXCEPT_IF(( + call_traits<S&, void(const R&)>::is_noexcept)) + { + asio::execution::start( + (new asio::execution::detail::submit_receiver< + S&, const R&>(s, r))->state_); + } + + template <typename S, typename R> + ASIO_CONSTEXPR typename enable_if< + call_traits<const S&, void(const R&)>::overload == adapter, + typename call_traits<const S&, void(const R&)>::result_type + >::type + operator()(const S& s, const R& r) const + ASIO_NOEXCEPT_IF(( + call_traits<const S&, void(const R&)>::is_noexcept)) + { + asio::execution::start( + (new asio::execution::detail::submit_receiver< + const S&, const R&>(s, r))->state_); + } +#endif // defined(ASIO_HAS_MOVE) +}; + +template <typename T = impl> +struct static_instance +{ + static const T instance; +}; + +template <typename T> +const T static_instance<T>::instance = {}; + +} // namespace asio_execution_submit_fn +namespace asio { +namespace execution { +namespace { + +static ASIO_CONSTEXPR const asio_execution_submit_fn::impl& + submit = asio_execution_submit_fn::static_instance<>::instance; + +} // namespace + +template <typename S, typename R> +struct can_submit : + integral_constant<bool, + asio_execution_submit_fn::call_traits<S, void(R)>::overload != + asio_execution_submit_fn::ill_formed> +{ +}; + +#if defined(ASIO_HAS_VARIABLE_TEMPLATES) + +template <typename S, typename R> +constexpr bool can_submit_v = can_submit<S, R>::value; + +#endif // defined(ASIO_HAS_VARIABLE_TEMPLATES) + +template <typename S, typename R> +struct is_nothrow_submit : + integral_constant<bool, + asio_execution_submit_fn::call_traits<S, void(R)>::is_noexcept> +{ +}; + +#if defined(ASIO_HAS_VARIABLE_TEMPLATES) + +template <typename S, typename R> +constexpr bool is_nothrow_submit_v + = is_nothrow_submit<S, R>::value; + +#endif // defined(ASIO_HAS_VARIABLE_TEMPLATES) + +template <typename S, typename R> +struct submit_result +{ + typedef typename asio_execution_submit_fn::call_traits< + S, void(R)>::result_type type; +}; + +namespace detail { + +template <typename S, typename R> +void submit_helper(ASIO_MOVE_ARG(S) s, ASIO_MOVE_ARG(R) r) +{ + execution::submit(ASIO_MOVE_CAST(S)(s), ASIO_MOVE_CAST(R)(r)); +} + +} // namespace detail +} // namespace execution +} // namespace asio + +#endif // defined(GENERATING_DOCUMENTATION) + +#include "asio/detail/pop_options.hpp" + +#endif // ASIO_EXECUTION_SUBMIT_HPP |