1 //
2 // detail/winrt_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_WINRT_SOCKET_CONNECT_OP_HPP
12 #define BOOST_ASIO_DETAIL_WINRT_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_WINDOWS_RUNTIME)
21 
22 #include <boost/asio/detail/addressof.hpp>
23 #include <boost/asio/detail/bind_handler.hpp>
24 #include <boost/asio/detail/buffer_sequence_adapter.hpp>
25 #include <boost/asio/detail/fenced_block.hpp>
26 #include <boost/asio/detail/handler_alloc_helpers.hpp>
27 #include <boost/asio/detail/handler_invoke_helpers.hpp>
28 #include <boost/asio/detail/winrt_async_op.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 template <typename Handler>
38 class winrt_socket_connect_op :
39   public winrt_async_op<void>
40 {
41 public:
42   BOOST_ASIO_DEFINE_HANDLER_PTR(winrt_socket_connect_op);
43 
winrt_socket_connect_op(Handler & handler)44   winrt_socket_connect_op(Handler& handler)
45     : winrt_async_op<void>(&winrt_socket_connect_op::do_complete),
46       handler_(BOOST_ASIO_MOVE_CAST(Handler)(handler))
47   {
48   }
49 
do_complete(io_service_impl * owner,operation * base,const boost::system::error_code &,std::size_t)50   static void do_complete(io_service_impl* owner, operation* base,
51       const boost::system::error_code&, std::size_t)
52   {
53     // Take ownership of the operation object.
54     winrt_socket_connect_op* o(static_cast<winrt_socket_connect_op*>(base));
55     ptr p = { boost::asio::detail::addressof(o->handler_), o, o };
56 
57     BOOST_ASIO_HANDLER_COMPLETION((o));
58 
59     // Make a copy of the handler so that the memory can be deallocated before
60     // the upcall is made. Even if we're not about to make an upcall, a
61     // sub-object of the handler may be the true owner of the memory associated
62     // with the handler. Consequently, a local copy of the handler is required
63     // to ensure that any owning sub-object remains valid until after we have
64     // deallocated the memory here.
65     detail::binder1<Handler, boost::system::error_code>
66       handler(o->handler_, o->ec_);
67     p.h = boost::asio::detail::addressof(handler.handler_);
68     p.reset();
69 
70     // Make the upcall if required.
71     if (owner)
72     {
73       fenced_block b(fenced_block::half);
74       BOOST_ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_, handler.arg2_));
75       boost_asio_handler_invoke_helpers::invoke(handler, handler.handler_);
76       BOOST_ASIO_HANDLER_INVOCATION_END;
77     }
78   }
79 
80 private:
81   Handler handler_;
82 };
83 
84 } // namespace detail
85 } // namespace asio
86 } // namespace boost
87 
88 #include <boost/asio/detail/pop_options.hpp>
89 
90 #endif // defined(BOOST_ASIO_WINDOWS_RUNTIME)
91 
92 #endif // BOOST_ASIO_DETAIL_WINRT_SOCKET_CONNECT_OP_HPP
93