63e88f80
 Hu Chunming
提交三方库
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//
// 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
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