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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\asio\detail\socket_holder.hpp

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//
// socket_holder.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_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/push_options.hpp>

#include <boost/asio/detail/noncopyable.hpp>
#include <boost/asio/detail/socket_ops.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::close(socket_, 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::close(socket_, 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

socket_holder.hpp

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