basic_io_object.hpp 2.62 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97
//
// basic_io_object.hpp
// ~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2010 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_BASIC_IO_OBJECT_HPP
#define ASIO_BASIC_IO_OBJECT_HPP

#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)

#include "asio/detail/push_options.hpp"

#include "asio/io_service.hpp"
#include "asio/detail/noncopyable.hpp"

namespace asio {

/// Base class for all I/O objects.
template <typename IoObjectService>
class basic_io_object
  : private noncopyable
{
public:
  /// The type of the service that will be used to provide I/O operations.
  typedef IoObjectService service_type;

  /// The underlying implementation type of I/O object.
  typedef typename service_type::implementation_type implementation_type;

  /// (Deprecated: use get_io_service().) Get the io_service associated with
  /// the object.
  /**
   * This function may be used to obtain the io_service object that the I/O
   * object uses to dispatch handlers for asynchronous operations.
   *
   * @return A reference to the io_service object that the I/O object will use
   * to dispatch handlers. Ownership is not transferred to the caller.
   */
  asio::io_service& io_service()
  {
    return service.get_io_service();
  }

  /// Get the io_service associated with the object.
  /**
   * This function may be used to obtain the io_service object that the I/O
   * object uses to dispatch handlers for asynchronous operations.
   *
   * @return A reference to the io_service object that the I/O object will use
   * to dispatch handlers. Ownership is not transferred to the caller.
   */
  asio::io_service& get_io_service()
  {
    return service.get_io_service();
  }

protected:
  /// Construct a basic_io_object.
  /**
   * Performs:
   * @code service.construct(implementation); @endcode
   */
  explicit basic_io_object(asio::io_service& io_service)
    : service(asio::use_service<IoObjectService>(io_service))
  {
    service.construct(implementation);
  }

  /// Protected destructor to prevent deletion through this type.
  /**
   * Performs:
   * @code service.destroy(implementation); @endcode
   */
  ~basic_io_object()
  {
    service.destroy(implementation);
  }

  /// The service associated with the I/O object.
  service_type& service;

  /// The underlying implementation of the I/O object.
  implementation_type implementation;
};

} // namespace asio

#include "asio/detail/pop_options.hpp"

#endif // ASIO_BASIC_IO_OBJECT_HPP