mirror of
https://github.com/VCMP-SqMod/SqMod.git
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Initial preparations for CURL and Discord integration.
This commit is contained in:
Sandu Liviu Catalin
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//
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// execution/bulk_execute.hpp
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2021 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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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 ASIO_EXECUTION_BULK_EXECUTE_HPP
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#define ASIO_EXECUTION_BULK_EXECUTE_HPP
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#if defined(_MSC_VER) && (_MSC_VER >= 1200)
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# pragma once
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#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
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#include "asio/detail/config.hpp"
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#include "asio/detail/type_traits.hpp"
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#include "asio/execution/bulk_guarantee.hpp"
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#include "asio/execution/detail/bulk_sender.hpp"
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#include "asio/execution/executor.hpp"
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#include "asio/execution/sender.hpp"
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#include "asio/traits/bulk_execute_member.hpp"
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#include "asio/traits/bulk_execute_free.hpp"
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#include "asio/detail/push_options.hpp"
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#if defined(GENERATING_DOCUMENTATION)
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namespace asio {
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namespace execution {
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/// A customisation point that creates a bulk sender.
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/**
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* The name <tt>execution::bulk_execute</tt> denotes a customisation point
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* object. If <tt>is_convertible_v<N, size_t></tt> is true, then the expression
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* <tt>execution::bulk_execute(S, F, N)</tt> for some subexpressions
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* <tt>S</tt>, <tt>F</tt>, and <tt>N</tt> is expression-equivalent to:
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*
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* @li <tt>S.bulk_execute(F, N)</tt>, if that expression is valid. If the
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* function selected does not execute <tt>N</tt> invocations of the function
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* object <tt>F</tt> on the executor <tt>S</tt> in bulk with forward progress
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* guarantee <tt>asio::query(S, execution::bulk_guarantee)</tt>, and
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* the result of that function does not model <tt>sender<void></tt>, the
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* program is ill-formed with no diagnostic required.
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*
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* @li Otherwise, <tt>bulk_execute(S, F, N)</tt>, if that expression is valid,
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* with overload resolution performed in a context that includes the
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* declaration <tt>void bulk_execute();</tt> and that does not include a
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* declaration of <tt>execution::bulk_execute</tt>. If the function selected
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* by overload resolution does not execute <tt>N</tt> invocations of the
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* function object <tt>F</tt> on the executor <tt>S</tt> in bulk with forward
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* progress guarantee <tt>asio::query(E,
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* execution::bulk_guarantee)</tt>, and the result of that function does not
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* model <tt>sender<void></tt>, the program is ill-formed with no diagnostic
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* required.
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*
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* @li Otherwise, if the types <tt>F</tt> and
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* <tt>executor_index_t<remove_cvref_t<S>></tt> model <tt>invocable</tt> and
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* if <tt>asio::query(S, execution::bulk_guarantee)</tt> equals
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* <tt>execution::bulk_guarantee.unsequenced</tt>, then
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*
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* - Evaluates <tt>DECAY_COPY(std::forward<decltype(F)>(F))</tt> on the
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* calling thread to create a function object <tt>cf</tt>. [Note:
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* Additional copies of <tt>cf</tt> may subsequently be created. --end
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* note.]
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*
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* - For each value of <tt>i</tt> in <tt>N</tt>, <tt>cf(i)</tt> (or copy of
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* <tt>cf</tt>)) will be invoked at most once by an execution agent that is
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* unique for each value of <tt>i</tt>.
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*
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* - May block pending completion of one or more invocations of <tt>cf</tt>.
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*
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* - Synchronizes with (C++Std [intro.multithread]) the invocations of
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* <tt>cf</tt>.
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*
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* @li Otherwise, <tt>execution::bulk_execute(S, F, N)</tt> is ill-formed.
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*/
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inline constexpr unspecified bulk_execute = unspecified;
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/// A type trait that determines whether a @c bulk_execute expression is
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/// well-formed.
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/**
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* Class template @c can_bulk_execute is a trait that is derived from @c
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* true_type if the expression <tt>execution::bulk_execute(std::declval<S>(),
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* std::declval<F>(), std::declval<N>)</tt> is well formed; otherwise @c
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* false_type.
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*/
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template <typename S, typename F, typename N>
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struct can_bulk_execute :
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integral_constant<bool, automatically_determined>
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{
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};
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} // namespace execution
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} // namespace asio
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#else // defined(GENERATING_DOCUMENTATION)
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namespace asio_execution_bulk_execute_fn {
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using asio::declval;
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using asio::enable_if;
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using asio::execution::bulk_guarantee_t;
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using asio::execution::detail::bulk_sender;
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using asio::execution::executor_index;
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using asio::execution::is_sender;
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using asio::is_convertible;
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using asio::is_same;
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using asio::remove_cvref;
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using asio::result_of;
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using asio::traits::bulk_execute_free;
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using asio::traits::bulk_execute_member;
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using asio::traits::static_require;
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void bulk_execute();
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enum overload_type
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{
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call_member,
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call_free,
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adapter,
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ill_formed
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};
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template <typename S, typename Args, typename = void, typename = void,
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typename = void, typename = void, typename = void, typename = void>
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struct call_traits
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{
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ASIO_STATIC_CONSTEXPR(overload_type, overload = ill_formed);
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ASIO_STATIC_CONSTEXPR(bool, is_noexcept = false);
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typedef void result_type;
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};
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template <typename S, typename F, typename N>
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struct call_traits<S, void(F, N),
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typename enable_if<
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is_convertible<N, std::size_t>::value
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>::type,
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typename enable_if<
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bulk_execute_member<S, F, N>::is_valid
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>::type,
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typename enable_if<
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is_sender<
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typename bulk_execute_member<S, F, N>::result_type
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>::value
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>::type> :
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bulk_execute_member<S, F, N>
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{
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ASIO_STATIC_CONSTEXPR(overload_type, overload = call_member);
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};
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template <typename S, typename F, typename N>
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struct call_traits<S, void(F, N),
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typename enable_if<
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is_convertible<N, std::size_t>::value
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>::type,
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typename enable_if<
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!bulk_execute_member<S, F, N>::is_valid
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>::type,
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typename enable_if<
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bulk_execute_free<S, F, N>::is_valid
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>::type,
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typename enable_if<
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is_sender<
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typename bulk_execute_free<S, F, N>::result_type
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>::value
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>::type> :
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bulk_execute_free<S, F, N>
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{
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ASIO_STATIC_CONSTEXPR(overload_type, overload = call_free);
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};
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template <typename S, typename F, typename N>
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struct call_traits<S, void(F, N),
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typename enable_if<
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is_convertible<N, std::size_t>::value
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>::type,
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typename enable_if<
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!bulk_execute_member<S, F, N>::is_valid
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>::type,
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typename enable_if<
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!bulk_execute_free<S, F, N>::is_valid
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>::type,
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typename enable_if<
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is_sender<S>::value
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>::type,
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typename enable_if<
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is_same<
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typename result_of<
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F(typename executor_index<typename remove_cvref<S>::type>::type)
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>::type,
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typename result_of<
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F(typename executor_index<typename remove_cvref<S>::type>::type)
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>::type
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>::value
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>::type,
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typename enable_if<
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static_require<S, bulk_guarantee_t::unsequenced_t>::is_valid
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>::type>
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{
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ASIO_STATIC_CONSTEXPR(overload_type, overload = adapter);
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ASIO_STATIC_CONSTEXPR(bool, is_noexcept = false);
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typedef bulk_sender<S, F, N> result_type;
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};
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struct impl
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{
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#if defined(ASIO_HAS_MOVE)
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template <typename S, typename F, typename N>
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ASIO_CONSTEXPR typename enable_if<
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call_traits<S, void(F, N)>::overload == call_member,
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typename call_traits<S, void(F, N)>::result_type
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>::type
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operator()(S&& s, F&& f, N&& n) const
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ASIO_NOEXCEPT_IF((
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call_traits<S, void(F, N)>::is_noexcept))
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{
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return ASIO_MOVE_CAST(S)(s).bulk_execute(
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ASIO_MOVE_CAST(F)(f), ASIO_MOVE_CAST(N)(n));
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}
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template <typename S, typename F, typename N>
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ASIO_CONSTEXPR typename enable_if<
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call_traits<S, void(F, N)>::overload == call_free,
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typename call_traits<S, void(F, N)>::result_type
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>::type
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operator()(S&& s, F&& f, N&& n) const
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ASIO_NOEXCEPT_IF((
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call_traits<S, void(F, N)>::is_noexcept))
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{
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return bulk_execute(ASIO_MOVE_CAST(S)(s),
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ASIO_MOVE_CAST(F)(f), ASIO_MOVE_CAST(N)(n));
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}
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template <typename S, typename F, typename N>
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ASIO_CONSTEXPR typename enable_if<
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call_traits<S, void(F, N)>::overload == adapter,
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typename call_traits<S, void(F, N)>::result_type
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>::type
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operator()(S&& s, F&& f, N&& n) const
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ASIO_NOEXCEPT_IF((
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call_traits<S, void(F, N)>::is_noexcept))
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{
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return typename call_traits<S, void(F, N)>::result_type(
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ASIO_MOVE_CAST(S)(s), ASIO_MOVE_CAST(F)(f),
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ASIO_MOVE_CAST(N)(n));
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}
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#else // defined(ASIO_HAS_MOVE)
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template <typename S, typename F, typename N>
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ASIO_CONSTEXPR typename enable_if<
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call_traits<S, void(const F&, const N&)>::overload == call_member,
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typename call_traits<S, void(const F&, const N&)>::result_type
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>::type
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operator()(S& s, const F& f, const N& n) const
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ASIO_NOEXCEPT_IF((
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call_traits<S, void(const F&, const N&)>::is_noexcept))
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{
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return s.bulk_execute(ASIO_MOVE_CAST(F)(f),
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ASIO_MOVE_CAST(N)(n));
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}
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template <typename S, typename F, typename N>
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ASIO_CONSTEXPR typename enable_if<
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call_traits<S, void(const F&, const N&)>::overload == call_member,
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typename call_traits<S, void(const F&, const N&)>::result_type
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>::type
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operator()(const S& s, const F& f, const N& n) const
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ASIO_NOEXCEPT_IF((
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call_traits<S, void(const F&, const N&)>::is_noexcept))
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{
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return s.bulk_execute(ASIO_MOVE_CAST(F)(f),
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ASIO_MOVE_CAST(N)(n));
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}
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template <typename S, typename F, typename N>
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ASIO_CONSTEXPR typename enable_if<
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call_traits<S, void(const F&, const N&)>::overload == call_free,
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typename call_traits<S, void(const F&, const N&)>::result_type
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>::type
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operator()(S& s, const F& f, const N& n) const
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ASIO_NOEXCEPT_IF((
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call_traits<S, void(const F&, const N&)>::is_noexcept))
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{
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return bulk_execute(s, ASIO_MOVE_CAST(F)(f),
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ASIO_MOVE_CAST(N)(n));
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}
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template <typename S, typename F, typename N>
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ASIO_CONSTEXPR typename enable_if<
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call_traits<S, void(const F&, const N&)>::overload == call_free,
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typename call_traits<S, void(const F&, const N&)>::result_type
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>::type
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operator()(const S& s, const F& f, const N& n) const
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ASIO_NOEXCEPT_IF((
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call_traits<S, void(const F&, const N&)>::is_noexcept))
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{
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return bulk_execute(s, ASIO_MOVE_CAST(F)(f),
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ASIO_MOVE_CAST(N)(n));
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}
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template <typename S, typename F, typename N>
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ASIO_CONSTEXPR typename enable_if<
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call_traits<S, void(const F&, const N&)>::overload == adapter,
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typename call_traits<S, void(const F&, const N&)>::result_type
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>::type
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operator()(S& s, const F& f, const N& n) const
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ASIO_NOEXCEPT_IF((
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call_traits<S, void(const F&, const N&)>::is_noexcept))
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{
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return typename call_traits<S, void(const F&, const N&)>::result_type(
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s, ASIO_MOVE_CAST(F)(f), ASIO_MOVE_CAST(N)(n));
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}
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template <typename S, typename F, typename N>
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ASIO_CONSTEXPR typename enable_if<
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call_traits<S, void(const F&, const N&)>::overload == adapter,
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typename call_traits<S, void(const F&, const N&)>::result_type
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>::type
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operator()(const S& s, const F& f, const N& n) const
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ASIO_NOEXCEPT_IF((
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call_traits<S, void(const F&, const N&)>::is_noexcept))
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{
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return typename call_traits<S, void(const F&, const N&)>::result_type(
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s, ASIO_MOVE_CAST(F)(f), ASIO_MOVE_CAST(N)(n));
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}
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#endif // defined(ASIO_HAS_MOVE)
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};
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template <typename T = impl>
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struct static_instance
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{
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static const T instance;
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};
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template <typename T>
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const T static_instance<T>::instance = {};
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} // namespace asio_execution_bulk_execute_fn
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namespace asio {
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namespace execution {
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namespace {
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static ASIO_CONSTEXPR
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const asio_execution_bulk_execute_fn::impl& bulk_execute =
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asio_execution_bulk_execute_fn::static_instance<>::instance;
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} // namespace
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template <typename S, typename F, typename N>
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struct can_bulk_execute :
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integral_constant<bool,
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asio_execution_bulk_execute_fn::call_traits<S, void(F, N)>::overload !=
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asio_execution_bulk_execute_fn::ill_formed>
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{
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};
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#if defined(ASIO_HAS_VARIABLE_TEMPLATES)
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template <typename S, typename F, typename N>
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constexpr bool can_bulk_execute_v = can_bulk_execute<S, F, N>::value;
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#endif // defined(ASIO_HAS_VARIABLE_TEMPLATES)
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template <typename S, typename F, typename N>
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struct is_nothrow_bulk_execute :
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integral_constant<bool,
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asio_execution_bulk_execute_fn::call_traits<S, void(F, N)>::is_noexcept>
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{
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};
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#if defined(ASIO_HAS_VARIABLE_TEMPLATES)
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template <typename S, typename F, typename N>
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constexpr bool is_nothrow_bulk_execute_v
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= is_nothrow_bulk_execute<S, F, N>::value;
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#endif // defined(ASIO_HAS_VARIABLE_TEMPLATES)
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template <typename S, typename F, typename N>
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struct bulk_execute_result
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{
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typedef typename asio_execution_bulk_execute_fn::call_traits<
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S, void(F, N)>::result_type type;
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};
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} // namespace execution
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} // namespace asio
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#endif // defined(GENERATING_DOCUMENTATION)
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#include "asio/detail/pop_options.hpp"
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#endif // ASIO_EXECUTION_BULK_EXECUTE_HPP
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