| // |
| // detail/socket_holder.hpp |
| // ~~~~~~~~~~~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2016 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_SOCKET_HOLDER_HPP |
| #define ASIO_DETAIL_SOCKET_HOLDER_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| # pragma once |
| #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
| |
| #include "asio/detail/config.hpp" |
| #include "asio/detail/noncopyable.hpp" |
| #include "asio/detail/socket_ops.hpp" |
| |
| #include "asio/detail/push_options.hpp" |
| |
| namespace asio { |
| namespace detail { |
| |
| // Implement the resource acquisition is initialisation idiom for sockets. |
| class socket_holder |
| : private noncopyable |
| { |
| public: |
| // Construct as an uninitialised socket. |
| socket_holder() |
| : socket_(invalid_socket) |
| { |
| } |
| |
| // Construct to take ownership of the specified socket. |
| explicit socket_holder(socket_type s) |
| : socket_(s) |
| { |
| } |
| |
| // Destructor. |
| ~socket_holder() |
| { |
| if (socket_ != invalid_socket) |
| { |
| asio::error_code ec; |
| socket_ops::state_type state = 0; |
| socket_ops::close(socket_, state, true, ec); |
| } |
| } |
| |
| // Get the underlying socket. |
| socket_type get() const |
| { |
| return socket_; |
| } |
| |
| // Reset to an uninitialised socket. |
| void reset() |
| { |
| if (socket_ != invalid_socket) |
| { |
| asio::error_code ec; |
| socket_ops::state_type state = 0; |
| socket_ops::close(socket_, state, true, ec); |
| socket_ = invalid_socket; |
| } |
| } |
| |
| // Reset to take ownership of the specified socket. |
| void reset(socket_type s) |
| { |
| reset(); |
| socket_ = s; |
| } |
| |
| // Release ownership of the socket. |
| socket_type release() |
| { |
| socket_type tmp = socket_; |
| socket_ = invalid_socket; |
| return tmp; |
| } |
| |
| private: |
| // The underlying socket. |
| socket_type socket_; |
| }; |
| |
| } // namespace detail |
| } // namespace asio |
| |
| #include "asio/detail/pop_options.hpp" |
| |
| #endif // ASIO_DETAIL_SOCKET_HOLDER_HPP |