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1 | // |
2 | // detail/win_iocp_socket_connect_op.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_DETAIL_WIN_IOCP_SOCKET_CONNECT_OP_HPP | |
12 | #define BOOST_ASIO_DETAIL_WIN_IOCP_SOCKET_CONNECT_OP_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_IOCP) | |
21 | ||
22 | #include <boost/asio/detail/addressof.hpp> | |
23 | #include <boost/asio/detail/bind_handler.hpp> | |
24 | #include <boost/asio/detail/fenced_block.hpp> | |
25 | #include <boost/asio/detail/handler_alloc_helpers.hpp> | |
26 | #include <boost/asio/detail/handler_invoke_helpers.hpp> | |
27 | #include <boost/asio/detail/reactor_op.hpp> | |
28 | #include <boost/asio/detail/socket_ops.hpp> | |
29 | #include <boost/asio/error.hpp> | |
30 | ||
31 | #include <boost/asio/detail/push_options.hpp> | |
32 | ||
33 | namespace boost { | |
34 | namespace asio { | |
35 | namespace detail { | |
36 | ||
37 | class win_iocp_socket_connect_op_base : public reactor_op | |
38 | { | |
39 | public: | |
40 | win_iocp_socket_connect_op_base(socket_type socket, func_type complete_func) | |
41 | : reactor_op(&win_iocp_socket_connect_op_base::do_perform, complete_func), | |
42 | socket_(socket), | |
43 | connect_ex_(false) | |
44 | { | |
45 | } | |
46 | ||
47 | static bool do_perform(reactor_op* base) | |
48 | { | |
49 | win_iocp_socket_connect_op_base* o( | |
50 | static_cast<win_iocp_socket_connect_op_base*>(base)); | |
51 | ||
52 | return socket_ops::non_blocking_connect(o->socket_, o->ec_); | |
53 | } | |
54 | ||
55 | socket_type socket_; | |
56 | bool connect_ex_; | |
57 | }; | |
58 | ||
59 | template <typename Handler> | |
60 | class win_iocp_socket_connect_op : public win_iocp_socket_connect_op_base | |
61 | { | |
62 | public: | |
63 | BOOST_ASIO_DEFINE_HANDLER_PTR(win_iocp_socket_connect_op); | |
64 | ||
65 | win_iocp_socket_connect_op(socket_type socket, Handler& handler) | |
66 | : win_iocp_socket_connect_op_base(socket, | |
67 | &win_iocp_socket_connect_op::do_complete), | |
68 | handler_(BOOST_ASIO_MOVE_CAST(Handler)(handler)) | |
69 | { | |
70 | } | |
71 | ||
72 | static void do_complete(io_service_impl* owner, operation* base, | |
73 | const boost::system::error_code& result_ec, | |
74 | std::size_t /*bytes_transferred*/) | |
75 | { | |
76 | boost::system::error_code ec(result_ec); | |
77 | ||
78 | // Take ownership of the operation object. | |
79 | win_iocp_socket_connect_op* o( | |
80 | static_cast<win_iocp_socket_connect_op*>(base)); | |
81 | ptr p = { boost::asio::detail::addressof(o->handler_), o, o }; | |
82 | ||
83 | if (owner) | |
84 | { | |
85 | if (o->connect_ex_) | |
86 | socket_ops::complete_iocp_connect(o->socket_, ec); | |
87 | else | |
88 | ec = o->ec_; | |
89 | } | |
90 | ||
91 | BOOST_ASIO_HANDLER_COMPLETION((o)); | |
92 | ||
93 | // Make a copy of the handler so that the memory can be deallocated before | |
94 | // the upcall is made. Even if we're not about to make an upcall, a | |
95 | // sub-object of the handler may be the true owner of the memory associated | |
96 | // with the handler. Consequently, a local copy of the handler is required | |
97 | // to ensure that any owning sub-object remains valid until after we have | |
98 | // deallocated the memory here. | |
99 | detail::binder1<Handler, boost::system::error_code> | |
100 | handler(o->handler_, ec); | |
101 | p.h = boost::asio::detail::addressof(handler.handler_); | |
102 | p.reset(); | |
103 | ||
104 | // Make the upcall if required. | |
105 | if (owner) | |
106 | { | |
107 | fenced_block b(fenced_block::half); | |
108 | BOOST_ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_)); | |
109 | boost_asio_handler_invoke_helpers::invoke(handler, handler.handler_); | |
110 | BOOST_ASIO_HANDLER_INVOCATION_END; | |
111 | } | |
112 | } | |
113 | ||
114 | private: | |
115 | Handler handler_; | |
116 | }; | |
117 | ||
118 | } // namespace detail | |
119 | } // namespace asio | |
120 | } // namespace boost | |
121 | ||
122 | #include <boost/asio/detail/pop_options.hpp> | |
123 | ||
124 | #endif // defined(BOOST_ASIO_HAS_IOCP) | |
125 | ||
126 | #endif // BOOST_ASIO_DETAIL_WIN_IOCP_SOCKET_CONNECT_OP_HPP |