// // experimental/channel.hpp // ~~~~~~~~~~~~~~~~~~~~~~~~ // // Copyright (c) 2003-2022 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 BOOST_ASIO_EXPERIMENTAL_CHANNEL_HPP #define BOOST_ASIO_EXPERIMENTAL_CHANNEL_HPP #if defined(_MSC_VER) && (_MSC_VER >= 1200) # pragma once #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) #include <boost/asio/detail/config.hpp> #include <boost/asio/any_io_executor.hpp> #include <boost/asio/detail/type_traits.hpp> #include <boost/asio/execution/executor.hpp> #include <boost/asio/is_executor.hpp> #include <boost/asio/experimental/basic_channel.hpp> #include <boost/asio/experimental/channel_traits.hpp> #include <boost/asio/detail/push_options.hpp> namespace boost { namespace asio { namespace experimental { namespace detail { template <typename ExecutorOrSignature, typename = void> struct channel_type { template <typename... Signatures> struct inner { typedef basic_channel<any_io_executor, channel_traits<>, ExecutorOrSignature, Signatures...> type; }; }; template <typename ExecutorOrSignature> struct channel_type<ExecutorOrSignature, typename enable_if< is_executor<ExecutorOrSignature>::value || execution::is_executor<ExecutorOrSignature>::value >::type> { template <typename... Signatures> struct inner { typedef basic_channel<ExecutorOrSignature, channel_traits<>, Signatures...> type; }; }; } // namespace detail /// Template type alias for common use of channel. template <typename ExecutorOrSignature, typename... Signatures> using channel = typename detail::channel_type< ExecutorOrSignature>::template inner<Signatures...>::type; } // namespace experimental } // namespace asio } // namespace boost #include <boost/asio/detail/pop_options.hpp> #endif // BOOST_ASIO_EXPERIMENTAL_CHANNEL_HPP