| // |
| // impl/detached.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_IMPL_DETACHED_HPP |
| #define ASIO_IMPL_DETACHED_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| # pragma once |
| #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
| |
| #include "asio/detail/config.hpp" |
| #include "asio/async_result.hpp" |
| #include "asio/detail/variadic_templates.hpp" |
| |
| #include "asio/detail/push_options.hpp" |
| |
| namespace asio { |
| namespace detail { |
| |
| // Class to adapt a detached_t as a completion handler. |
| class detached_handler |
| { |
| public: |
| typedef void result_type; |
| |
| detached_handler(detached_t) |
| { |
| } |
| |
| #if defined(ASIO_HAS_VARIADIC_TEMPLATES) |
| |
| template <typename... Args> |
| void operator()(Args...) |
| { |
| } |
| |
| #else // defined(ASIO_HAS_VARIADIC_TEMPLATES) |
| |
| void operator()() |
| { |
| } |
| |
| #define ASIO_PRIVATE_DETACHED_DEF(n) \ |
| template <ASIO_VARIADIC_TPARAMS(n)> \ |
| void operator()(ASIO_VARIADIC_TARGS(n)) \ |
| { \ |
| } \ |
| /**/ |
| ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_DETACHED_DEF) |
| #undef ASIO_PRIVATE_DETACHED_DEF |
| |
| #endif // defined(ASIO_HAS_VARIADIC_TEMPLATES) |
| }; |
| |
| } // namespace detail |
| |
| #if !defined(GENERATING_DOCUMENTATION) |
| |
| template <typename Signature> |
| struct async_result<detached_t, Signature> |
| { |
| typedef asio::detail::detached_handler completion_handler_type; |
| |
| typedef void return_type; |
| |
| explicit async_result(completion_handler_type&) |
| { |
| } |
| |
| void get() |
| { |
| } |
| |
| #if defined(ASIO_HAS_VARIADIC_TEMPLATES) |
| |
| template <typename Initiation, typename RawCompletionToken, typename... Args> |
| static return_type initiate( |
| ASIO_MOVE_ARG(Initiation) initiation, |
| ASIO_MOVE_ARG(RawCompletionToken), |
| ASIO_MOVE_ARG(Args)... args) |
| { |
| ASIO_MOVE_CAST(Initiation)(initiation)( |
| detail::detached_handler(detached_t()), |
| ASIO_MOVE_CAST(Args)(args)...); |
| } |
| |
| #else // defined(ASIO_HAS_VARIADIC_TEMPLATES) |
| |
| template <typename Initiation, typename RawCompletionToken> |
| static return_type initiate( |
| ASIO_MOVE_ARG(Initiation) initiation, |
| ASIO_MOVE_ARG(RawCompletionToken)) |
| { |
| ASIO_MOVE_CAST(Initiation)(initiation)( |
| detail::detached_handler(detached_t())); |
| } |
| |
| #define ASIO_PRIVATE_INITIATE_DEF(n) \ |
| template <typename Initiation, typename RawCompletionToken, \ |
| ASIO_VARIADIC_TPARAMS(n)> \ |
| static return_type initiate( \ |
| ASIO_MOVE_ARG(Initiation) initiation, \ |
| ASIO_MOVE_ARG(RawCompletionToken), \ |
| ASIO_VARIADIC_MOVE_PARAMS(n)) \ |
| { \ |
| ASIO_MOVE_CAST(Initiation)(initiation)( \ |
| detail::detached_handler(detached_t()), \ |
| ASIO_VARIADIC_MOVE_ARGS(n)); \ |
| } \ |
| /**/ |
| ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_INITIATE_DEF) |
| #undef ASIO_PRIVATE_INITIATE_DEF |
| |
| #endif // defined(ASIO_HAS_VARIADIC_TEMPLATES) |
| }; |
| |
| #endif // !defined(GENERATING_DOCUMENTATION) |
| |
| } // namespace asio |
| |
| #include "asio/detail/pop_options.hpp" |
| |
| #endif // ASIO_IMPL_DETACHED_HPP |