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//
// detail/socket_holder.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2017 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_SOCKET_HOLDER_HPP
#define BOOST_ASIO_DETAIL_SOCKET_HOLDER_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include <boost/asio/detail/config.hpp>
#include <boost/asio/detail/noncopyable.hpp>
#include <boost/asio/detail/socket_ops.hpp>
#include <boost/asio/detail/push_options.hpp>
namespace boost {
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)
{
boost::system::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)
{
boost::system::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
} // namespace boost
#include <boost/asio/detail/pop_options.hpp>
#endif // BOOST_ASIO_DETAIL_SOCKET_HOLDER_HPP
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