1 | // |
2 | // detail/reactive_socket_send_op.hpp |
3 | // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
4 | // |
5 | // Copyright (c) 2003-2015 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_REACTIVE_SOCKET_SEND_OP_HPP |
12 | #define BOOST_ASIO_DETAIL_REACTIVE_SOCKET_SEND_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 | #include <boost/asio/detail/addressof.hpp> |
20 | #include <boost/asio/detail/bind_handler.hpp> |
21 | #include <boost/asio/detail/buffer_sequence_adapter.hpp> |
22 | #include <boost/asio/detail/fenced_block.hpp> |
23 | #include <boost/asio/detail/reactor_op.hpp> |
24 | #include <boost/asio/detail/socket_ops.hpp> |
25 | |
26 | #include <boost/asio/detail/push_options.hpp> |
27 | |
28 | namespace boost { |
29 | namespace asio { |
30 | namespace detail { |
31 | |
32 | template <typename ConstBufferSequence> |
33 | class reactive_socket_send_op_base : public reactor_op |
34 | { |
35 | public: |
36 | reactive_socket_send_op_base(socket_type socket, |
37 | const ConstBufferSequence& buffers, |
38 | socket_base::message_flags flags, func_type complete_func) |
39 | : reactor_op(&reactive_socket_send_op_base::do_perform, complete_func), |
40 | socket_(socket), |
41 | buffers_(buffers), |
42 | flags_(flags) |
43 | { |
44 | } |
45 | |
46 | static bool do_perform(reactor_op* base) |
47 | { |
48 | reactive_socket_send_op_base* o( |
49 | static_cast<reactive_socket_send_op_base*>(base)); |
50 | |
51 | buffer_sequence_adapter<boost::asio::const_buffer, |
52 | ConstBufferSequence> bufs(o->buffers_); |
53 | |
54 | return socket_ops::non_blocking_send(s: o->socket_, |
55 | bufs: bufs.buffers(), count: bufs.count(), flags: o->flags_, |
56 | ec&: o->ec_, bytes_transferred&: o->bytes_transferred_); |
57 | } |
58 | |
59 | private: |
60 | socket_type socket_; |
61 | ConstBufferSequence buffers_; |
62 | socket_base::message_flags flags_; |
63 | }; |
64 | |
65 | template <typename ConstBufferSequence, typename Handler> |
66 | class reactive_socket_send_op : |
67 | public reactive_socket_send_op_base<ConstBufferSequence> |
68 | { |
69 | public: |
70 | BOOST_ASIO_DEFINE_HANDLER_PTR(reactive_socket_send_op); |
71 | |
72 | reactive_socket_send_op(socket_type socket, |
73 | const ConstBufferSequence& buffers, |
74 | socket_base::message_flags flags, Handler& handler) |
75 | : reactive_socket_send_op_base<ConstBufferSequence>(socket, |
76 | buffers, flags, &reactive_socket_send_op::do_complete), |
77 | handler_(BOOST_ASIO_MOVE_CAST(Handler)(handler)) |
78 | { |
79 | } |
80 | |
81 | static void do_complete(io_service_impl* owner, operation* base, |
82 | const boost::system::error_code& /*ec*/, |
83 | std::size_t /*bytes_transferred*/) |
84 | { |
85 | // Take ownership of the handler object. |
86 | reactive_socket_send_op* o(static_cast<reactive_socket_send_op*>(base)); |
87 | ptr p = { boost::asio::detail::addressof(o->handler_), o, o }; |
88 | |
89 | BOOST_ASIO_HANDLER_COMPLETION((o)); |
90 | |
91 | // Make a copy of the handler so that the memory can be deallocated before |
92 | // the upcall is made. Even if we're not about to make an upcall, a |
93 | // sub-object of the handler may be the true owner of the memory associated |
94 | // with the handler. Consequently, a local copy of the handler is required |
95 | // to ensure that any owning sub-object remains valid until after we have |
96 | // deallocated the memory here. |
97 | detail::binder2<Handler, boost::system::error_code, std::size_t> |
98 | handler(o->handler_, o->ec_, o->bytes_transferred_); |
99 | p.h = boost::asio::detail::addressof(handler.handler_); |
100 | p.reset(); |
101 | |
102 | // Make the upcall if required. |
103 | if (owner) |
104 | { |
105 | fenced_block b(fenced_block::half); |
106 | BOOST_ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_, handler.arg2_)); |
107 | boost_asio_handler_invoke_helpers::invoke(handler, handler.handler_); |
108 | BOOST_ASIO_HANDLER_INVOCATION_END; |
109 | } |
110 | } |
111 | |
112 | private: |
113 | Handler handler_; |
114 | }; |
115 | |
116 | } // namespace detail |
117 | } // namespace asio |
118 | } // namespace boost |
119 | |
120 | #include <boost/asio/detail/pop_options.hpp> |
121 | |
122 | #endif // BOOST_ASIO_DETAIL_REACTIVE_SOCKET_SEND_OP_HPP |
123 | |