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//
// detail/wrapped_handler.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_DETAIL_WRAPPED_HANDLER_HPP
#define ASIO_DETAIL_WRAPPED_HANDLER_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/bind_handler.hpp"
#include "asio/detail/handler_alloc_helpers.hpp"
#include "asio/detail/handler_cont_helpers.hpp"
#include "asio/detail/handler_invoke_helpers.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
struct is_continuation_delegated
{
template <typename Dispatcher, typename Handler>
bool operator()(Dispatcher&, Handler& handler) const
{
return asio_handler_cont_helpers::is_continuation(handler);
}
};
struct is_continuation_if_running
{
template <typename Dispatcher, typename Handler>
bool operator()(Dispatcher& dispatcher, Handler&) const
{
return dispatcher.running_in_this_thread();
}
};
template <typename Dispatcher, typename Handler,
typename IsContinuation = is_continuation_delegated>
class wrapped_handler
{
public:
typedef void result_type;
wrapped_handler(Dispatcher dispatcher, Handler& handler)
: dispatcher_(dispatcher),
handler_(ASIO_MOVE_CAST(Handler)(handler))
{
}
#if defined(ASIO_HAS_MOVE)
wrapped_handler(const wrapped_handler& other)
: dispatcher_(other.dispatcher_),
handler_(other.handler_)
{
}
wrapped_handler(wrapped_handler&& other)
: dispatcher_(other.dispatcher_),
handler_(ASIO_MOVE_CAST(Handler)(other.handler_))
{
}
#endif // defined(ASIO_HAS_MOVE)
void operator()()
{
dispatcher_.dispatch(ASIO_MOVE_CAST(Handler)(handler_));
}
void operator()() const
{
dispatcher_.dispatch(handler_);
}
template <typename Arg1>
void operator()(const Arg1& arg1)
{
dispatcher_.dispatch(detail::bind_handler(handler_, arg1));
}
template <typename Arg1>
void operator()(const Arg1& arg1) const
{
dispatcher_.dispatch(detail::bind_handler(handler_, arg1));
}
template <typename Arg1, typename Arg2>
void operator()(const Arg1& arg1, const Arg2& arg2)
{
dispatcher_.dispatch(detail::bind_handler(handler_, arg1, arg2));
}
template <typename Arg1, typename Arg2>
void operator()(const Arg1& arg1, const Arg2& arg2) const
{
dispatcher_.dispatch(detail::bind_handler(handler_, arg1, arg2));
}
template <typename Arg1, typename Arg2, typename Arg3>
void operator()(const Arg1& arg1, const Arg2& arg2, const Arg3& arg3)
{
dispatcher_.dispatch(detail::bind_handler(handler_, arg1, arg2, arg3));
}
template <typename Arg1, typename Arg2, typename Arg3>
void operator()(const Arg1& arg1, const Arg2& arg2, const Arg3& arg3) const
{
dispatcher_.dispatch(detail::bind_handler(handler_, arg1, arg2, arg3));
}
template <typename Arg1, typename Arg2, typename Arg3, typename Arg4>
void operator()(const Arg1& arg1, const Arg2& arg2, const Arg3& arg3,
const Arg4& arg4)
{
dispatcher_.dispatch(
detail::bind_handler(handler_, arg1, arg2, arg3, arg4));
}
template <typename Arg1, typename Arg2, typename Arg3, typename Arg4>
void operator()(const Arg1& arg1, const Arg2& arg2, const Arg3& arg3,
const Arg4& arg4) const
{
dispatcher_.dispatch(
detail::bind_handler(handler_, arg1, arg2, arg3, arg4));
}
template <typename Arg1, typename Arg2, typename Arg3, typename Arg4,
typename Arg5>
void operator()(const Arg1& arg1, const Arg2& arg2, const Arg3& arg3,
const Arg4& arg4, const Arg5& arg5)
{
dispatcher_.dispatch(
detail::bind_handler(handler_, arg1, arg2, arg3, arg4, arg5));
}
template <typename Arg1, typename Arg2, typename Arg3, typename Arg4,
typename Arg5>
void operator()(const Arg1& arg1, const Arg2& arg2, const Arg3& arg3,
const Arg4& arg4, const Arg5& arg5) const
{
dispatcher_.dispatch(
detail::bind_handler(handler_, arg1, arg2, arg3, arg4, arg5));
}
//private:
Dispatcher dispatcher_;
Handler handler_;
};
template <typename Handler, typename Context>
class rewrapped_handler
{
public:
explicit rewrapped_handler(Handler& handler, const Context& context)
: context_(context),
handler_(ASIO_MOVE_CAST(Handler)(handler))
{
}
explicit rewrapped_handler(const Handler& handler, const Context& context)
: context_(context),
handler_(handler)
{
}
#if defined(ASIO_HAS_MOVE)
rewrapped_handler(const rewrapped_handler& other)
: context_(other.context_),
handler_(other.handler_)
{
}
rewrapped_handler(rewrapped_handler&& other)
: context_(ASIO_MOVE_CAST(Context)(other.context_)),
handler_(ASIO_MOVE_CAST(Handler)(other.handler_))
{
}
#endif // defined(ASIO_HAS_MOVE)
void operator()()
{
handler_();
}
void operator()() const
{
handler_();
}
//private:
Context context_;
Handler handler_;
};
template <typename Dispatcher, typename Handler, typename IsContinuation>
inline void* asio_handler_allocate(std::size_t size,
wrapped_handler<Dispatcher, Handler, IsContinuation>* this_handler)
{
return asio_handler_alloc_helpers::allocate(
size, this_handler->handler_);
}
template <typename Dispatcher, typename Handler, typename IsContinuation>
inline void asio_handler_deallocate(void* pointer, std::size_t size,
wrapped_handler<Dispatcher, Handler, IsContinuation>* this_handler)
{
asio_handler_alloc_helpers::deallocate(
pointer, size, this_handler->handler_);
}
template <typename Dispatcher, typename Handler, typename IsContinuation>
inline bool asio_handler_is_continuation(
wrapped_handler<Dispatcher, Handler, IsContinuation>* this_handler)
{
return IsContinuation()(this_handler->dispatcher_, this_handler->handler_);
}
template <typename Function, typename Dispatcher,
typename Handler, typename IsContinuation>
inline void asio_handler_invoke(Function& function,
wrapped_handler<Dispatcher, Handler, IsContinuation>* this_handler)
{
this_handler->dispatcher_.dispatch(
rewrapped_handler<Function, Handler>(
function, this_handler->handler_));
}
template <typename Function, typename Dispatcher,
typename Handler, typename IsContinuation>
inline void asio_handler_invoke(const Function& function,
wrapped_handler<Dispatcher, Handler, IsContinuation>* this_handler)
{
this_handler->dispatcher_.dispatch(
rewrapped_handler<Function, Handler>(
function, this_handler->handler_));
}
template <typename Handler, typename Context>
inline void* asio_handler_allocate(std::size_t size,
rewrapped_handler<Handler, Context>* this_handler)
{
return asio_handler_alloc_helpers::allocate(
size, this_handler->context_);
}
template <typename Handler, typename Context>
inline void asio_handler_deallocate(void* pointer, std::size_t size,
rewrapped_handler<Handler, Context>* this_handler)
{
asio_handler_alloc_helpers::deallocate(
pointer, size, this_handler->context_);
}
template <typename Dispatcher, typename Context>
inline bool asio_handler_is_continuation(
rewrapped_handler<Dispatcher, Context>* this_handler)
{
return asio_handler_cont_helpers::is_continuation(
this_handler->context_);
}
template <typename Function, typename Handler, typename Context>
inline void asio_handler_invoke(Function& function,
rewrapped_handler<Handler, Context>* this_handler)
{
asio_handler_invoke_helpers::invoke(
function, this_handler->context_);
}
template <typename Function, typename Handler, typename Context>
inline void asio_handler_invoke(const Function& function,
rewrapped_handler<Handler, Context>* this_handler)
{
asio_handler_invoke_helpers::invoke(
function, this_handler->context_);
}
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_DETAIL_WRAPPED_HANDLER_HPP
|
