| // |
| // handler_base_from_member.hpp |
| // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2008 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_DETAIL_HANDLER_BASE_FROM_MEMBER_HPP |
| #define BOOST_ASIO_DETAIL_HANDLER_BASE_FROM_MEMBER_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| # pragma once |
| #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
| |
| #include <boost/asio/detail/push_options.hpp> |
| |
| #include <boost/asio/detail/handler_alloc_helpers.hpp> |
| #include <boost/asio/detail/handler_invoke_helpers.hpp> |
| |
| namespace boost { |
| namespace asio { |
| namespace detail { |
| |
| // Base class for classes that need a handler data member. Forwards the custom |
| // allocation and invocation hooks to the contained handler. |
| template <typename Handler> |
| class handler_base_from_member |
| { |
| public: |
| handler_base_from_member(Handler handler) |
| : handler_(handler) |
| { |
| } |
| |
| //protected: |
| Handler handler_; |
| |
| protected: |
| // Protected destructor to prevent deletion through this type. |
| ~handler_base_from_member() |
| { |
| } |
| }; |
| |
| template <typename Handler> |
| inline void* asio_handler_allocate(std::size_t size, |
| handler_base_from_member<Handler>* this_handler) |
| { |
| return boost_asio_handler_alloc_helpers::allocate( |
| size, &this_handler->handler_); |
| } |
| |
| template <typename Handler> |
| inline void asio_handler_deallocate(void* pointer, std::size_t size, |
| handler_base_from_member<Handler>* this_handler) |
| { |
| boost_asio_handler_alloc_helpers::deallocate( |
| pointer, size, &this_handler->handler_); |
| } |
| |
| template <typename Function, typename Handler> |
| inline void asio_handler_invoke(const Function& function, |
| handler_base_from_member<Handler>* this_handler) |
| { |
| boost_asio_handler_invoke_helpers::invoke( |
| function, &this_handler->handler_); |
| } |
| |
| } // namespace detail |
| } // namespace asio |
| } // namespace boost |
| |
| #include <boost/asio/detail/pop_options.hpp> |
| |
| #endif // BOOST_ASIO_DETAIL_HANDLER_BASE_FROM_MEMBER_HPP |