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//
// impl/defer.hpp
// ~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 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_DEFER_HPP
#define ASIO_IMPL_DEFER_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include "asio/associated_allocator.hpp"
#include "asio/associated_executor.hpp"
#include "asio/detail/work_dispatcher.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
template <typename CompletionToken>
ASIO_INITFN_RESULT_TYPE(CompletionToken, void()) defer(
ASIO_MOVE_ARG(CompletionToken) token)
{
typedef ASIO_HANDLER_TYPE(CompletionToken, void()) handler;
async_completion<CompletionToken, void()> init(token);
typename associated_executor<handler>::type ex(
(get_associated_executor)(init.completion_handler));
typename associated_allocator<handler>::type alloc(
(get_associated_allocator)(init.completion_handler));
ex.defer(ASIO_MOVE_CAST(handler)(init.completion_handler), alloc);
return init.result.get();
}
template <typename Executor, typename CompletionToken>
ASIO_INITFN_RESULT_TYPE(CompletionToken, void()) defer(
const Executor& ex, ASIO_MOVE_ARG(CompletionToken) token,
typename enable_if<is_executor<Executor>::value>::type*)
{
typedef ASIO_HANDLER_TYPE(CompletionToken, void()) handler;
async_completion<CompletionToken, void()> init(token);
typename associated_allocator<handler>::type alloc(
(get_associated_allocator)(init.completion_handler));
ex.defer(detail::work_dispatcher<handler>(init.completion_handler), alloc);
return init.result.get();
}
template <typename ExecutionContext, typename CompletionToken>
inline ASIO_INITFN_RESULT_TYPE(CompletionToken, void()) defer(
ExecutionContext& ctx, ASIO_MOVE_ARG(CompletionToken) token,
typename enable_if<is_convertible<
ExecutionContext&, execution_context&>::value>::type*)
{
return (defer)(ctx.get_executor(),
ASIO_MOVE_CAST(CompletionToken)(token));
}
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_IMPL_DEFER_HPP
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