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1 | // | |
2 | // windows/random_access_handle_service.hpp | |
3 | // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
4 | // | |
5 | // Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com) | |
6 | // | |
7 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | |
8 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
9 | // | |
10 | ||
11 | #ifndef BOOST_ASIO_WINDOWS_RANDOM_ACCESS_HANDLE_SERVICE_HPP | |
12 | #define BOOST_ASIO_WINDOWS_RANDOM_ACCESS_HANDLE_SERVICE_HPP | |
13 | ||
14 | #if defined(_MSC_VER) && (_MSC_VER >= 1200) | |
15 | # pragma once | |
16 | #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) | |
17 | ||
18 | #include <boost/asio/detail/config.hpp> | |
19 | ||
20 | #if defined(BOOST_ASIO_HAS_WINDOWS_RANDOM_ACCESS_HANDLE) \ | |
21 | || defined(GENERATING_DOCUMENTATION) | |
22 | ||
23 | #include <cstddef> | |
24 | #include <boost/asio/async_result.hpp> | |
25 | #include <boost/asio/detail/cstdint.hpp> | |
26 | #include <boost/asio/detail/win_iocp_handle_service.hpp> | |
27 | #include <boost/asio/error.hpp> | |
28 | #include <boost/asio/io_service.hpp> | |
29 | ||
30 | #include <boost/asio/detail/push_options.hpp> | |
31 | ||
32 | namespace boost { | |
33 | namespace asio { | |
34 | namespace windows { | |
35 | ||
36 | /// Default service implementation for a random-access handle. | |
37 | class random_access_handle_service | |
38 | #if defined(GENERATING_DOCUMENTATION) | |
39 | : public boost::asio::io_service::service | |
40 | #else | |
41 | : public boost::asio::detail::service_base<random_access_handle_service> | |
42 | #endif | |
43 | { | |
44 | public: | |
45 | #if defined(GENERATING_DOCUMENTATION) | |
46 | /// The unique service identifier. | |
47 | static boost::asio::io_service::id id; | |
48 | #endif | |
49 | ||
50 | private: | |
51 | // The type of the platform-specific implementation. | |
52 | typedef detail::win_iocp_handle_service service_impl_type; | |
53 | ||
54 | public: | |
55 | /// The type of a random-access handle implementation. | |
56 | #if defined(GENERATING_DOCUMENTATION) | |
57 | typedef implementation_defined implementation_type; | |
58 | #else | |
59 | typedef service_impl_type::implementation_type implementation_type; | |
60 | #endif | |
61 | ||
62 | /// (Deprecated: Use native_handle_type.) The native handle type. | |
63 | #if defined(GENERATING_DOCUMENTATION) | |
64 | typedef implementation_defined native_type; | |
65 | #else | |
66 | typedef service_impl_type::native_handle_type native_type; | |
67 | #endif | |
68 | ||
69 | /// The native handle type. | |
70 | #if defined(GENERATING_DOCUMENTATION) | |
71 | typedef implementation_defined native_handle_type; | |
72 | #else | |
73 | typedef service_impl_type::native_handle_type native_handle_type; | |
74 | #endif | |
75 | ||
76 | /// Construct a new random-access handle service for the specified io_service. | |
77 | explicit random_access_handle_service(boost::asio::io_service& io_service) | |
78 | : boost::asio::detail::service_base< | |
79 | random_access_handle_service>(io_service), | |
80 | service_impl_(io_service) | |
81 | { | |
82 | } | |
83 | ||
84 | /// Construct a new random-access handle implementation. | |
85 | void construct(implementation_type& impl) | |
86 | { | |
87 | service_impl_.construct(impl); | |
88 | } | |
89 | ||
90 | #if defined(BOOST_ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION) | |
91 | /// Move-construct a new random-access handle implementation. | |
92 | void move_construct(implementation_type& impl, | |
93 | implementation_type& other_impl) | |
94 | { | |
95 | service_impl_.move_construct(impl, other_impl); | |
96 | } | |
97 | ||
98 | /// Move-assign from another random-access handle implementation. | |
99 | void move_assign(implementation_type& impl, | |
100 | random_access_handle_service& other_service, | |
101 | implementation_type& other_impl) | |
102 | { | |
103 | service_impl_.move_assign(impl, other_service.service_impl_, other_impl); | |
104 | } | |
105 | #endif // defined(BOOST_ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION) | |
106 | ||
107 | /// Destroy a random-access handle implementation. | |
108 | void destroy(implementation_type& impl) | |
109 | { | |
110 | service_impl_.destroy(impl); | |
111 | } | |
112 | ||
113 | /// Assign an existing native handle to a random-access handle. | |
114 | boost::system::error_code assign(implementation_type& impl, | |
115 | const native_handle_type& handle, boost::system::error_code& ec) | |
116 | { | |
117 | return service_impl_.assign(impl, handle, ec); | |
118 | } | |
119 | ||
120 | /// Determine whether the handle is open. | |
121 | bool is_open(const implementation_type& impl) const | |
122 | { | |
123 | return service_impl_.is_open(impl); | |
124 | } | |
125 | ||
126 | /// Close a random-access handle implementation. | |
127 | boost::system::error_code close(implementation_type& impl, | |
128 | boost::system::error_code& ec) | |
129 | { | |
130 | return service_impl_.close(impl, ec); | |
131 | } | |
132 | ||
133 | /// (Deprecated: Use native_handle().) Get the native handle implementation. | |
134 | native_type native(implementation_type& impl) | |
135 | { | |
136 | return service_impl_.native_handle(impl); | |
137 | } | |
138 | ||
139 | /// Get the native handle implementation. | |
140 | native_handle_type native_handle(implementation_type& impl) | |
141 | { | |
142 | return service_impl_.native_handle(impl); | |
143 | } | |
144 | ||
145 | /// Cancel all asynchronous operations associated with the handle. | |
146 | boost::system::error_code cancel(implementation_type& impl, | |
147 | boost::system::error_code& ec) | |
148 | { | |
149 | return service_impl_.cancel(impl, ec); | |
150 | } | |
151 | ||
152 | /// Write the given data at the specified offset. | |
153 | template <typename ConstBufferSequence> | |
154 | std::size_t write_some_at(implementation_type& impl, uint64_t offset, | |
155 | const ConstBufferSequence& buffers, boost::system::error_code& ec) | |
156 | { | |
157 | return service_impl_.write_some_at(impl, offset, buffers, ec); | |
158 | } | |
159 | ||
160 | /// Start an asynchronous write at the specified offset. | |
161 | template <typename ConstBufferSequence, typename WriteHandler> | |
162 | BOOST_ASIO_INITFN_RESULT_TYPE(WriteHandler, | |
163 | void (boost::system::error_code, std::size_t)) | |
164 | async_write_some_at(implementation_type& impl, | |
165 | uint64_t offset, const ConstBufferSequence& buffers, | |
166 | BOOST_ASIO_MOVE_ARG(WriteHandler) handler) | |
167 | { | |
168 | boost::asio::detail::async_result_init< | |
169 | WriteHandler, void (boost::system::error_code, std::size_t)> init( | |
170 | BOOST_ASIO_MOVE_CAST(WriteHandler)(handler)); | |
171 | ||
172 | service_impl_.async_write_some_at(impl, offset, buffers, init.handler); | |
173 | ||
174 | return init.result.get(); | |
175 | } | |
176 | ||
177 | /// Read some data from the specified offset. | |
178 | template <typename MutableBufferSequence> | |
179 | std::size_t read_some_at(implementation_type& impl, uint64_t offset, | |
180 | const MutableBufferSequence& buffers, boost::system::error_code& ec) | |
181 | { | |
182 | return service_impl_.read_some_at(impl, offset, buffers, ec); | |
183 | } | |
184 | ||
185 | /// Start an asynchronous read at the specified offset. | |
186 | template <typename MutableBufferSequence, typename ReadHandler> | |
187 | BOOST_ASIO_INITFN_RESULT_TYPE(ReadHandler, | |
188 | void (boost::system::error_code, std::size_t)) | |
189 | async_read_some_at(implementation_type& impl, | |
190 | uint64_t offset, const MutableBufferSequence& buffers, | |
191 | BOOST_ASIO_MOVE_ARG(ReadHandler) handler) | |
192 | { | |
193 | boost::asio::detail::async_result_init< | |
194 | ReadHandler, void (boost::system::error_code, std::size_t)> init( | |
195 | BOOST_ASIO_MOVE_CAST(ReadHandler)(handler)); | |
196 | ||
197 | service_impl_.async_read_some_at(impl, offset, buffers, init.handler); | |
198 | ||
199 | return init.result.get(); | |
200 | } | |
201 | ||
202 | private: | |
203 | // Destroy all user-defined handler objects owned by the service. | |
204 | void shutdown_service() | |
205 | { | |
206 | service_impl_.shutdown_service(); | |
207 | } | |
208 | ||
209 | // The platform-specific implementation. | |
210 | service_impl_type service_impl_; | |
211 | }; | |
212 | ||
213 | } // namespace windows | |
214 | } // namespace asio | |
215 | } // namespace boost | |
216 | ||
217 | #include <boost/asio/detail/pop_options.hpp> | |
218 | ||
219 | #endif // defined(BOOST_ASIO_HAS_WINDOWS_RANDOM_ACCESS_HANDLE) | |
220 | // || defined(GENERATING_DOCUMENTATION) | |
221 | ||
222 | #endif // BOOST_ASIO_WINDOWS_RANDOM_ACCESS_HANDLE_SERVICE_HPP |