summaryrefslogtreecommitdiffstats
blob: 3b112233ab9ffc7d150bfed6a0c85db63fce4831 (plain)
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
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
//
// random_access_handle_service.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_WINDOWS_RANDOM_ACCESS_HANDLE_SERVICE_HPP
#define BOOST_ASIO_WINDOWS_RANDOM_ACCESS_HANDLE_SERVICE_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/push_options.hpp>
#include <cstddef>
#include <boost/config.hpp>
#include <boost/cstdint.hpp>
#include <boost/asio/detail/pop_options.hpp>

#include <boost/asio/error.hpp>
#include <boost/asio/io_service.hpp>
#include <boost/asio/detail/service_base.hpp>
#include <boost/asio/detail/win_iocp_handle_service.hpp>

#if !defined(BOOST_ASIO_DISABLE_WINDOWS_RANDOM_ACCESS_HANDLE)
# if defined(BOOST_ASIO_HAS_IOCP)
#  define BOOST_ASIO_HAS_WINDOWS_RANDOM_ACCESS_HANDLE 1
# endif // defined(BOOST_ASIO_HAS_IOCP)
#endif // !defined(BOOST_ASIO_DISABLE_WINDOWS_RANDOM_ACCESS_HANDLE)

#if defined(BOOST_ASIO_HAS_WINDOWS_RANDOM_ACCESS_HANDLE) \
  || defined(GENERATING_DOCUMENTATION)

namespace boost {
namespace asio {
namespace windows {

/// Default service implementation for a random-access handle.
class random_access_handle_service
#if defined(GENERATING_DOCUMENTATION)
  : public boost::asio::io_service::service
#else
  : public boost::asio::detail::service_base<random_access_handle_service>
#endif
{
public:
#if defined(GENERATING_DOCUMENTATION)
  /// The unique service identifier.
  static boost::asio::io_service::id id;
#endif

private:
  // The type of the platform-specific implementation.
  typedef detail::win_iocp_handle_service service_impl_type;

public:
  /// The type of a random-access handle implementation.
#if defined(GENERATING_DOCUMENTATION)
  typedef implementation_defined implementation_type;
#else
  typedef service_impl_type::implementation_type implementation_type;
#endif

  /// The native handle type.
#if defined(GENERATING_DOCUMENTATION)
  typedef implementation_defined native_type;
#else
  typedef service_impl_type::native_type native_type;
#endif

  /// Construct a new random-access handle service for the specified io_service.
  explicit random_access_handle_service(boost::asio::io_service& io_service)
    : boost::asio::detail::service_base<
        random_access_handle_service>(io_service),
      service_impl_(boost::asio::use_service<service_impl_type>(io_service))
  {
  }

  /// Destroy all user-defined handler objects owned by the service.
  void shutdown_service()
  {
  }

  /// Construct a new random-access handle implementation.
  void construct(implementation_type& impl)
  {
    service_impl_.construct(impl);
  }

  /// Destroy a random-access handle implementation.
  void destroy(implementation_type& impl)
  {
    service_impl_.destroy(impl);
  }

  /// Assign an existing native handle to a random-access handle.
  boost::system::error_code assign(implementation_type& impl,
      const native_type& native_handle, boost::system::error_code& ec)
  {
    return service_impl_.assign(impl, native_handle, ec);
  }

  /// Determine whether the handle is open.
  bool is_open(const implementation_type& impl) const
  {
    return service_impl_.is_open(impl);
  }

  /// Close a random-access handle implementation.
  boost::system::error_code close(implementation_type& impl,
      boost::system::error_code& ec)
  {
    return service_impl_.close(impl, ec);
  }

  /// Get the native handle implementation.
  native_type native(implementation_type& impl)
  {
    return service_impl_.native(impl);
  }

  /// Cancel all asynchronous operations associated with the handle.
  boost::system::error_code cancel(implementation_type& impl,
      boost::system::error_code& ec)
  {
    return service_impl_.cancel(impl, ec);
  }

  /// Write the given data at the specified offset.
  template <typename ConstBufferSequence>
  std::size_t write_some_at(implementation_type& impl, boost::uint64_t offset,
      const ConstBufferSequence& buffers, boost::system::error_code& ec)
  {
    return service_impl_.write_some_at(impl, offset, buffers, ec);
  }

  /// Start an asynchronous write at the specified offset.
  template <typename ConstBufferSequence, typename WriteHandler>
  void async_write_some_at(implementation_type& impl, boost::uint64_t offset,
      const ConstBufferSequence& buffers, WriteHandler handler)
  {
    service_impl_.async_write_some_at(impl, offset, buffers, handler);
  }

  /// Read some data from the specified offset.
  template <typename MutableBufferSequence>
  std::size_t read_some_at(implementation_type& impl, boost::uint64_t offset,
      const MutableBufferSequence& buffers, boost::system::error_code& ec)
  {
    return service_impl_.read_some_at(impl, offset, buffers, ec);
  }

  /// Start an asynchronous read at the specified offset.
  template <typename MutableBufferSequence, typename ReadHandler>
  void async_read_some_at(implementation_type& impl, boost::uint64_t offset,
      const MutableBufferSequence& buffers, ReadHandler handler)
  {
    service_impl_.async_read_some_at(impl, offset, buffers, handler);
  }

private:
  // The service that provides the platform-specific implementation.
  service_impl_type& service_impl_;
};

} // namespace windows
} // namespace asio
} // namespace boost

#endif // defined(BOOST_ASIO_HAS_WINDOWS_RANDOM_ACCESS_HANDLE)
       //   || defined(GENERATING_DOCUMENTATION)

#include <boost/asio/detail/pop_options.hpp>

#endif // BOOST_ASIO_WINDOWS_RANDOM_ACCESS_HANDLE_SERVICE_HPP