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 ASIO_DETAIL_REACTIVE_SOCKET_CONNECT_OP_HPP
12#define ASIO_DETAIL_REACTIVE_SOCKET_CONNECT_OP_HPP
13
14
15#include "asio/detail/config.hpp"
16#include "asio/detail/addressof.hpp"
17#include "asio/detail/bind_handler.hpp"
18#include "asio/detail/buffer_sequence_adapter.hpp"
19#include "asio/detail/fenced_block.hpp"
20#include "asio/detail/reactor_op.hpp"
21#include "asio/detail/socket_ops.hpp"
22
23#include "asio/detail/push_options.hpp"
24
25namespace asio {
26namespace detail {
27
28class reactive_socket_connect_op_base : public reactor_op
29{
30public:
31  reactive_socket_connect_op_base(socket_type socket, func_type complete_func)
32    : reactor_op(&reactive_socket_connect_op_base::do_perform, complete_func),
33      socket_(socket)
34  {
35  }
36
37  static bool do_perform(reactor_op* base)
38  {
39    reactive_socket_connect_op_base* o(
40        static_cast<reactive_socket_connect_op_base*>(base));
41
42    return socket_ops::non_blocking_connect(o->socket_, o->ec_);
43  }
44
45private:
46  socket_type socket_;
47};
48
49template <typename Handler>
50class reactive_socket_connect_op : public reactive_socket_connect_op_base
51{
52public:
53  ASIO_DEFINE_HANDLER_PTR(reactive_socket_connect_op);
54
55  reactive_socket_connect_op(socket_type socket, Handler& handler)
56    : reactive_socket_connect_op_base(socket,
57        &reactive_socket_connect_op::do_complete),
58      handler_(ASIO_MOVE_CAST(Handler)(handler))
59  {
60  }
61
62  static void do_complete(io_service_impl* owner, operation* base,
63      const asio::error_code& /*ec*/,
64      std::size_t /*bytes_transferred*/)
65  {
66    // Take ownership of the handler object.
67    reactive_socket_connect_op* o
68      (static_cast<reactive_socket_connect_op*>(base));
69    ptr p = { asio::detail::addressof(o->handler_), o, o };
70
71    ASIO_HANDLER_COMPLETION((o));
72
73    // Make a copy of the handler so that the memory can be deallocated before
74    // the upcall is made. Even if we're not about to make an upcall, a
75    // sub-object of the handler may be the true owner of the memory associated
76    // with the handler. Consequently, a local copy of the handler is required
77    // to ensure that any owning sub-object remains valid until after we have
78    // deallocated the memory here.
79    detail::binder1<Handler, asio::error_code>
80      handler(o->handler_, o->ec_);
81    p.h = asio::detail::addressof(handler.handler_);
82    p.reset();
83
84    // Make the upcall if required.
85    if (owner)
86    {
87      fenced_block b(fenced_block::half);
88      ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_));
89      asio_handler_invoke_helpers::invoke(handler, handler);
90      ASIO_HANDLER_INVOCATION_END;
91    }
92  }
93
94private:
95  Handler handler_;
96};
97
98} // namespace detail
99} // namespace asio
100
101#include "asio/detail/pop_options.hpp"
102
103#endif // ASIO_DETAIL_REACTIVE_SOCKET_CONNECT_OP_HPP
104