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//
// impl/dispatch.hpp
// ~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2019 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_IMPL_DISPATCH_HPP
#define BOOST_ASIO_IMPL_DISPATCH_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/associated_allocator.hpp>
#include <boost/asio/associated_executor.hpp>
#include <boost/asio/detail/work_dispatcher.hpp>
#include <boost/asio/detail/push_options.hpp>
namespace boost {
namespace asio {
namespace detail {
struct initiate_dispatch
{
template <typename CompletionHandler>
void operator()(BOOST_ASIO_MOVE_ARG(CompletionHandler) handler) const
{
typedef typename decay<CompletionHandler>::type DecayedHandler;
typename associated_executor<DecayedHandler>::type ex(
(get_associated_executor)(handler));
typename associated_allocator<DecayedHandler>::type alloc(
(get_associated_allocator)(handler));
ex.dispatch(BOOST_ASIO_MOVE_CAST(CompletionHandler)(handler), alloc);
}
template <typename CompletionHandler, typename Executor>
void operator()(BOOST_ASIO_MOVE_ARG(CompletionHandler) handler,
BOOST_ASIO_MOVE_ARG(Executor) ex) const
{
typedef typename decay<CompletionHandler>::type DecayedHandler;
typename associated_allocator<DecayedHandler>::type alloc(
(get_associated_allocator)(handler));
ex.dispatch(detail::work_dispatcher<DecayedHandler>(
BOOST_ASIO_MOVE_CAST(CompletionHandler)(handler)), alloc);
}
};
} // namespace detail
template <typename CompletionToken>
BOOST_ASIO_INITFN_RESULT_TYPE(CompletionToken, void()) dispatch(
BOOST_ASIO_MOVE_ARG(CompletionToken) token)
{
return async_initiate<CompletionToken, void()>(
detail::initiate_dispatch(), token);
}
template <typename Executor, typename CompletionToken>
BOOST_ASIO_INITFN_RESULT_TYPE(CompletionToken, void()) dispatch(
const Executor& ex, BOOST_ASIO_MOVE_ARG(CompletionToken) token,
typename enable_if<is_executor<Executor>::value>::type*)
{
return async_initiate<CompletionToken, void()>(
detail::initiate_dispatch(), token, ex);
}
template <typename ExecutionContext, typename CompletionToken>
inline BOOST_ASIO_INITFN_RESULT_TYPE(CompletionToken, void()) dispatch(
ExecutionContext& ctx, BOOST_ASIO_MOVE_ARG(CompletionToken) token,
typename enable_if<is_convertible<
ExecutionContext&, execution_context&>::value>::type*)
{
return (dispatch)(ctx.get_executor(),
BOOST_ASIO_MOVE_CAST(CompletionToken)(token));
}
} // namespace asio
} // namespace boost
#include <boost/asio/detail/pop_options.hpp>
#endif // BOOST_ASIO_IMPL_DISPATCH_HPP
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