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7c673cae FG |
1 | // |
2 | // detail/winrt_resolve_op.hpp | |
3 | // ~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
4 | // | |
92f5a8d4 | 5 | // Copyright (c) 2003-2019 Christopher M. Kohlhoff (chris at kohlhoff dot com) |
7c673cae FG |
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_RESOLVE_OP_HPP | |
12 | #define BOOST_ASIO_DETAIL_WINRT_RESOLVE_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 | ||
7c673cae FG |
22 | #include <boost/asio/detail/bind_handler.hpp> |
23 | #include <boost/asio/detail/fenced_block.hpp> | |
24 | #include <boost/asio/detail/handler_alloc_helpers.hpp> | |
25 | #include <boost/asio/detail/handler_invoke_helpers.hpp> | |
b32b8144 | 26 | #include <boost/asio/detail/memory.hpp> |
7c673cae | 27 | #include <boost/asio/detail/winrt_async_op.hpp> |
b32b8144 | 28 | #include <boost/asio/ip/basic_resolver_results.hpp> |
7c673cae FG |
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 | ||
92f5a8d4 | 37 | template <typename Protocol, typename Handler, typename IoExecutor> |
7c673cae FG |
38 | class winrt_resolve_op : |
39 | public winrt_async_op< | |
40 | Windows::Foundation::Collections::IVectorView< | |
41 | Windows::Networking::EndpointPair^>^> | |
42 | { | |
43 | public: | |
44 | BOOST_ASIO_DEFINE_HANDLER_PTR(winrt_resolve_op); | |
45 | ||
46 | typedef typename Protocol::endpoint endpoint_type; | |
47 | typedef boost::asio::ip::basic_resolver_query<Protocol> query_type; | |
b32b8144 | 48 | typedef boost::asio::ip::basic_resolver_results<Protocol> results_type; |
7c673cae | 49 | |
92f5a8d4 TL |
50 | winrt_resolve_op(const query_type& query, |
51 | Handler& handler, const IoExecutor& io_ex) | |
7c673cae FG |
52 | : winrt_async_op< |
53 | Windows::Foundation::Collections::IVectorView< | |
54 | Windows::Networking::EndpointPair^>^>( | |
55 | &winrt_resolve_op::do_complete), | |
56 | query_(query), | |
92f5a8d4 TL |
57 | handler_(BOOST_ASIO_MOVE_CAST(Handler)(handler)), |
58 | io_executor_(io_ex) | |
7c673cae | 59 | { |
92f5a8d4 | 60 | handler_work<Handler, IoExecutor>::start(handler_, io_executor_); |
7c673cae FG |
61 | } |
62 | ||
b32b8144 | 63 | static void do_complete(void* owner, operation* base, |
7c673cae FG |
64 | const boost::system::error_code&, std::size_t) |
65 | { | |
66 | // Take ownership of the operation object. | |
67 | winrt_resolve_op* o(static_cast<winrt_resolve_op*>(base)); | |
68 | ptr p = { boost::asio::detail::addressof(o->handler_), o, o }; | |
92f5a8d4 | 69 | handler_work<Handler, IoExecutor> w(o->handler_, o->io_executor_); |
7c673cae | 70 | |
b32b8144 | 71 | BOOST_ASIO_HANDLER_COMPLETION((*o)); |
7c673cae | 72 | |
b32b8144 | 73 | results_type results = results_type(); |
7c673cae FG |
74 | if (!o->ec_) |
75 | { | |
76 | try | |
77 | { | |
b32b8144 | 78 | results = results_type::create(o->result_, o->query_.hints(), |
7c673cae FG |
79 | o->query_.host_name(), o->query_.service_name()); |
80 | } | |
81 | catch (Platform::Exception^ e) | |
82 | { | |
83 | o->ec_ = boost::system::error_code(e->HResult, | |
84 | boost::system::system_category()); | |
85 | } | |
86 | } | |
87 | ||
88 | // Make a copy of the handler so that the memory can be deallocated before | |
89 | // the upcall is made. Even if we're not about to make an upcall, a | |
90 | // sub-object of the handler may be the true owner of the memory associated | |
91 | // with the handler. Consequently, a local copy of the handler is required | |
92 | // to ensure that any owning sub-object remains valid until after we have | |
93 | // deallocated the memory here. | |
b32b8144 FG |
94 | detail::binder2<Handler, boost::system::error_code, results_type> |
95 | handler(o->handler_, o->ec_, results); | |
7c673cae FG |
96 | p.h = boost::asio::detail::addressof(handler.handler_); |
97 | p.reset(); | |
98 | ||
99 | // Make the upcall if required. | |
100 | if (owner) | |
101 | { | |
102 | fenced_block b(fenced_block::half); | |
b32b8144 FG |
103 | BOOST_ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_, "...")); |
104 | w.complete(handler, handler.handler_); | |
7c673cae FG |
105 | BOOST_ASIO_HANDLER_INVOCATION_END; |
106 | } | |
107 | } | |
108 | ||
109 | private: | |
110 | query_type query_; | |
111 | Handler handler_; | |
92f5a8d4 | 112 | IoExecutor io_executor_; |
7c673cae FG |
113 | }; |
114 | ||
115 | } // namespace detail | |
116 | } // namespace asio | |
117 | } // namespace boost | |
118 | ||
119 | #include <boost/asio/detail/pop_options.hpp> | |
120 | ||
121 | #endif // defined(BOOST_ASIO_WINDOWS_RUNTIME) | |
122 | ||
123 | #endif // BOOST_ASIO_DETAIL_WINRT_RESOLVE_OP_HPP |