detached.hpp
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//
// impl/detached.hpp
// ~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2020 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