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

source code of boost/boost/asio/detail/reactive_socket_connect_op.hpp