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7c673cae FG |
1 | // |
2 | // detail/reactive_socket_service_base.ipp | |
3 | // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
4 | // | |
b32b8144 | 5 | // Copyright (c) 2003-2017 Christopher M. Kohlhoff (chris at kohlhoff dot com) |
7c673cae FG |
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_DETAIL_IMPL_REACTIVE_SOCKET_SERVICE_BASE_IPP | |
12 | #define BOOST_ASIO_DETAIL_IMPL_REACTIVE_SOCKET_SERVICE_BASE_IPP | |
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_IOCP) \ | |
21 | && !defined(BOOST_ASIO_WINDOWS_RUNTIME) | |
22 | ||
23 | #include <boost/asio/detail/reactive_socket_service_base.hpp> | |
24 | ||
25 | #include <boost/asio/detail/push_options.hpp> | |
26 | ||
27 | namespace boost { | |
28 | namespace asio { | |
29 | namespace detail { | |
30 | ||
31 | reactive_socket_service_base::reactive_socket_service_base( | |
b32b8144 FG |
32 | boost::asio::io_context& io_context) |
33 | : io_context_(io_context), | |
34 | reactor_(use_service<reactor>(io_context)) | |
7c673cae FG |
35 | { |
36 | reactor_.init_task(); | |
37 | } | |
38 | ||
b32b8144 | 39 | void reactive_socket_service_base::base_shutdown() |
7c673cae FG |
40 | { |
41 | } | |
42 | ||
43 | void reactive_socket_service_base::construct( | |
44 | reactive_socket_service_base::base_implementation_type& impl) | |
45 | { | |
46 | impl.socket_ = invalid_socket; | |
47 | impl.state_ = 0; | |
48 | } | |
49 | ||
50 | void reactive_socket_service_base::base_move_construct( | |
51 | reactive_socket_service_base::base_implementation_type& impl, | |
52 | reactive_socket_service_base::base_implementation_type& other_impl) | |
53 | { | |
54 | impl.socket_ = other_impl.socket_; | |
55 | other_impl.socket_ = invalid_socket; | |
56 | ||
57 | impl.state_ = other_impl.state_; | |
58 | other_impl.state_ = 0; | |
59 | ||
60 | reactor_.move_descriptor(impl.socket_, | |
61 | impl.reactor_data_, other_impl.reactor_data_); | |
62 | } | |
63 | ||
64 | void reactive_socket_service_base::base_move_assign( | |
65 | reactive_socket_service_base::base_implementation_type& impl, | |
66 | reactive_socket_service_base& other_service, | |
67 | reactive_socket_service_base::base_implementation_type& other_impl) | |
68 | { | |
69 | destroy(impl); | |
70 | ||
71 | impl.socket_ = other_impl.socket_; | |
72 | other_impl.socket_ = invalid_socket; | |
73 | ||
74 | impl.state_ = other_impl.state_; | |
75 | other_impl.state_ = 0; | |
76 | ||
77 | other_service.reactor_.move_descriptor(impl.socket_, | |
78 | impl.reactor_data_, other_impl.reactor_data_); | |
79 | } | |
80 | ||
81 | void reactive_socket_service_base::destroy( | |
82 | reactive_socket_service_base::base_implementation_type& impl) | |
83 | { | |
84 | if (impl.socket_ != invalid_socket) | |
85 | { | |
b32b8144 FG |
86 | BOOST_ASIO_HANDLER_OPERATION((reactor_.context(), |
87 | "socket", &impl, impl.socket_, "close")); | |
7c673cae FG |
88 | |
89 | reactor_.deregister_descriptor(impl.socket_, impl.reactor_data_, | |
90 | (impl.state_ & socket_ops::possible_dup) == 0); | |
91 | ||
92 | boost::system::error_code ignored_ec; | |
93 | socket_ops::close(impl.socket_, impl.state_, true, ignored_ec); | |
b32b8144 FG |
94 | |
95 | reactor_.cleanup_descriptor_data(impl.reactor_data_); | |
7c673cae FG |
96 | } |
97 | } | |
98 | ||
99 | boost::system::error_code reactive_socket_service_base::close( | |
100 | reactive_socket_service_base::base_implementation_type& impl, | |
101 | boost::system::error_code& ec) | |
102 | { | |
103 | if (is_open(impl)) | |
104 | { | |
b32b8144 FG |
105 | BOOST_ASIO_HANDLER_OPERATION((reactor_.context(), |
106 | "socket", &impl, impl.socket_, "close")); | |
7c673cae FG |
107 | |
108 | reactor_.deregister_descriptor(impl.socket_, impl.reactor_data_, | |
109 | (impl.state_ & socket_ops::possible_dup) == 0); | |
7c673cae | 110 | |
b32b8144 FG |
111 | socket_ops::close(impl.socket_, impl.state_, false, ec); |
112 | ||
113 | reactor_.cleanup_descriptor_data(impl.reactor_data_); | |
114 | } | |
115 | else | |
116 | { | |
117 | ec = boost::system::error_code(); | |
118 | } | |
7c673cae FG |
119 | |
120 | // The descriptor is closed by the OS even if close() returns an error. | |
121 | // | |
122 | // (Actually, POSIX says the state of the descriptor is unspecified. On | |
123 | // Linux the descriptor is apparently closed anyway; e.g. see | |
124 | // http://lkml.org/lkml/2005/9/10/129 | |
125 | // We'll just have to assume that other OSes follow the same behaviour. The | |
126 | // known exception is when Windows's closesocket() function fails with | |
127 | // WSAEWOULDBLOCK, but this case is handled inside socket_ops::close(). | |
128 | construct(impl); | |
129 | ||
130 | return ec; | |
131 | } | |
132 | ||
b32b8144 FG |
133 | socket_type reactive_socket_service_base::release( |
134 | reactive_socket_service_base::base_implementation_type& impl, | |
135 | boost::system::error_code& ec) | |
136 | { | |
137 | if (!is_open(impl)) | |
138 | { | |
139 | ec = boost::asio::error::bad_descriptor; | |
140 | return invalid_socket; | |
141 | } | |
142 | ||
143 | BOOST_ASIO_HANDLER_OPERATION((reactor_.context(), | |
144 | "socket", &impl, impl.socket_, "release")); | |
145 | ||
146 | reactor_.deregister_descriptor(impl.socket_, impl.reactor_data_, false); | |
147 | reactor_.cleanup_descriptor_data(impl.reactor_data_); | |
148 | socket_type sock = impl.socket_; | |
149 | construct(impl); | |
150 | ec = boost::system::error_code(); | |
151 | return sock; | |
152 | } | |
153 | ||
7c673cae FG |
154 | boost::system::error_code reactive_socket_service_base::cancel( |
155 | reactive_socket_service_base::base_implementation_type& impl, | |
156 | boost::system::error_code& ec) | |
157 | { | |
158 | if (!is_open(impl)) | |
159 | { | |
160 | ec = boost::asio::error::bad_descriptor; | |
161 | return ec; | |
162 | } | |
163 | ||
b32b8144 FG |
164 | BOOST_ASIO_HANDLER_OPERATION((reactor_.context(), |
165 | "socket", &impl, impl.socket_, "cancel")); | |
7c673cae FG |
166 | |
167 | reactor_.cancel_ops(impl.socket_, impl.reactor_data_); | |
168 | ec = boost::system::error_code(); | |
169 | return ec; | |
170 | } | |
171 | ||
172 | boost::system::error_code reactive_socket_service_base::do_open( | |
173 | reactive_socket_service_base::base_implementation_type& impl, | |
174 | int af, int type, int protocol, boost::system::error_code& ec) | |
175 | { | |
176 | if (is_open(impl)) | |
177 | { | |
178 | ec = boost::asio::error::already_open; | |
179 | return ec; | |
180 | } | |
181 | ||
182 | socket_holder sock(socket_ops::socket(af, type, protocol, ec)); | |
183 | if (sock.get() == invalid_socket) | |
184 | return ec; | |
185 | ||
186 | if (int err = reactor_.register_descriptor(sock.get(), impl.reactor_data_)) | |
187 | { | |
188 | ec = boost::system::error_code(err, | |
189 | boost::asio::error::get_system_category()); | |
190 | return ec; | |
191 | } | |
192 | ||
193 | impl.socket_ = sock.release(); | |
194 | switch (type) | |
195 | { | |
196 | case SOCK_STREAM: impl.state_ = socket_ops::stream_oriented; break; | |
197 | case SOCK_DGRAM: impl.state_ = socket_ops::datagram_oriented; break; | |
198 | default: impl.state_ = 0; break; | |
199 | } | |
200 | ec = boost::system::error_code(); | |
201 | return ec; | |
202 | } | |
203 | ||
204 | boost::system::error_code reactive_socket_service_base::do_assign( | |
205 | reactive_socket_service_base::base_implementation_type& impl, int type, | |
206 | const reactive_socket_service_base::native_handle_type& native_socket, | |
207 | boost::system::error_code& ec) | |
208 | { | |
209 | if (is_open(impl)) | |
210 | { | |
211 | ec = boost::asio::error::already_open; | |
212 | return ec; | |
213 | } | |
214 | ||
215 | if (int err = reactor_.register_descriptor( | |
216 | native_socket, impl.reactor_data_)) | |
217 | { | |
218 | ec = boost::system::error_code(err, | |
219 | boost::asio::error::get_system_category()); | |
220 | return ec; | |
221 | } | |
222 | ||
223 | impl.socket_ = native_socket; | |
224 | switch (type) | |
225 | { | |
226 | case SOCK_STREAM: impl.state_ = socket_ops::stream_oriented; break; | |
227 | case SOCK_DGRAM: impl.state_ = socket_ops::datagram_oriented; break; | |
228 | default: impl.state_ = 0; break; | |
229 | } | |
230 | impl.state_ |= socket_ops::possible_dup; | |
231 | ec = boost::system::error_code(); | |
232 | return ec; | |
233 | } | |
234 | ||
235 | void reactive_socket_service_base::start_op( | |
236 | reactive_socket_service_base::base_implementation_type& impl, | |
237 | int op_type, reactor_op* op, bool is_continuation, | |
238 | bool is_non_blocking, bool noop) | |
239 | { | |
240 | if (!noop) | |
241 | { | |
242 | if ((impl.state_ & socket_ops::non_blocking) | |
243 | || socket_ops::set_internal_non_blocking( | |
244 | impl.socket_, impl.state_, true, op->ec_)) | |
245 | { | |
246 | reactor_.start_op(op_type, impl.socket_, | |
247 | impl.reactor_data_, op, is_continuation, is_non_blocking); | |
248 | return; | |
249 | } | |
250 | } | |
251 | ||
252 | reactor_.post_immediate_completion(op, is_continuation); | |
253 | } | |
254 | ||
255 | void reactive_socket_service_base::start_accept_op( | |
256 | reactive_socket_service_base::base_implementation_type& impl, | |
257 | reactor_op* op, bool is_continuation, bool peer_is_open) | |
258 | { | |
259 | if (!peer_is_open) | |
b32b8144 | 260 | start_op(impl, reactor::read_op, op, is_continuation, true, false); |
7c673cae FG |
261 | else |
262 | { | |
263 | op->ec_ = boost::asio::error::already_open; | |
264 | reactor_.post_immediate_completion(op, is_continuation); | |
265 | } | |
266 | } | |
267 | ||
268 | void reactive_socket_service_base::start_connect_op( | |
269 | reactive_socket_service_base::base_implementation_type& impl, | |
270 | reactor_op* op, bool is_continuation, | |
271 | const socket_addr_type* addr, size_t addrlen) | |
272 | { | |
273 | if ((impl.state_ & socket_ops::non_blocking) | |
274 | || socket_ops::set_internal_non_blocking( | |
275 | impl.socket_, impl.state_, true, op->ec_)) | |
276 | { | |
277 | if (socket_ops::connect(impl.socket_, addr, addrlen, op->ec_) != 0) | |
278 | { | |
279 | if (op->ec_ == boost::asio::error::in_progress | |
280 | || op->ec_ == boost::asio::error::would_block) | |
281 | { | |
282 | op->ec_ = boost::system::error_code(); | |
283 | reactor_.start_op(reactor::connect_op, impl.socket_, | |
284 | impl.reactor_data_, op, is_continuation, false); | |
285 | return; | |
286 | } | |
287 | } | |
288 | } | |
289 | ||
290 | reactor_.post_immediate_completion(op, is_continuation); | |
291 | } | |
292 | ||
293 | } // namespace detail | |
294 | } // namespace asio | |
295 | } // namespace boost | |
296 | ||
297 | #include <boost/asio/detail/pop_options.hpp> | |
298 | ||
299 | #endif // !defined(BOOST_ASIO_HAS_IOCP) | |
300 | // && !defined(BOOST_ASIO_WINDOWS_RUNTIME) | |
301 | ||
302 | #endif // BOOST_ASIO_DETAIL_IMPL_REACTIVE_SOCKET_SERVICE_BASE_IPP |