2 // detail/winrt_resolve_op.hpp
3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~
5 // Copyright (c) 2003-2017 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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)
11 #ifndef BOOST_ASIO_DETAIL_WINRT_RESOLVE_OP_HPP
12 #define BOOST_ASIO_DETAIL_WINRT_RESOLVE_OP_HPP
14 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
16 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
18 #include <boost/asio/detail/config.hpp>
20 #if defined(BOOST_ASIO_WINDOWS_RUNTIME)
22 #include <boost/asio/detail/addressof.hpp>
23 #include <boost/asio/detail/bind_handler.hpp>
24 #include <boost/asio/detail/fenced_block.hpp>
25 #include <boost/asio/detail/handler_alloc_helpers.hpp>
26 #include <boost/asio/detail/handler_invoke_helpers.hpp>
27 #include <boost/asio/detail/winrt_async_op.hpp>
28 #include <boost/asio/ip/basic_resolver_iterator.hpp>
29 #include <boost/asio/error.hpp>
31 #include <boost/asio/detail/push_options.hpp>
37 template <typename Protocol, typename Handler>
38 class winrt_resolve_op :
39 public winrt_async_op<
40 Windows::Foundation::Collections::IVectorView<
41 Windows::Networking::EndpointPair^>^>
44 BOOST_ASIO_DEFINE_HANDLER_PTR(winrt_resolve_op);
46 typedef typename Protocol::endpoint endpoint_type;
47 typedef boost::asio::ip::basic_resolver_query<Protocol> query_type;
48 typedef boost::asio::ip::basic_resolver_iterator<Protocol> iterator_type;
50 winrt_resolve_op(const query_type& query, Handler& handler)
52 Windows::Foundation::Collections::IVectorView<
53 Windows::Networking::EndpointPair^>^>(
54 &winrt_resolve_op::do_complete),
56 handler_(BOOST_ASIO_MOVE_CAST(Handler)(handler))
60 static void do_complete(io_service_impl* owner, operation* base,
61 const boost::system::error_code&, std::size_t)
63 // Take ownership of the operation object.
64 winrt_resolve_op* o(static_cast<winrt_resolve_op*>(base));
65 ptr p = { boost::asio::detail::addressof(o->handler_), o, o };
67 BOOST_ASIO_HANDLER_COMPLETION((o));
69 iterator_type iterator = iterator_type();
74 iterator = iterator_type::create(
75 o->result_, o->query_.hints(),
76 o->query_.host_name(), o->query_.service_name());
78 catch (Platform::Exception^ e)
80 o->ec_ = boost::system::error_code(e->HResult,
81 boost::system::system_category());
85 // Make a copy of the handler so that the memory can be deallocated before
86 // the upcall is made. Even if we're not about to make an upcall, a
87 // sub-object of the handler may be the true owner of the memory associated
88 // with the handler. Consequently, a local copy of the handler is required
89 // to ensure that any owning sub-object remains valid until after we have
90 // deallocated the memory here.
91 detail::binder2<Handler, boost::system::error_code, iterator_type>
92 handler(o->handler_, o->ec_, iterator);
93 p.h = boost::asio::detail::addressof(handler.handler_);
96 // Make the upcall if required.
99 fenced_block b(fenced_block::half);
100 BOOST_ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_, handler.arg2_));
101 boost_asio_handler_invoke_helpers::invoke(handler, handler.handler_);
102 BOOST_ASIO_HANDLER_INVOCATION_END;
111 } // namespace detail
115 #include <boost/asio/detail/pop_options.hpp>
117 #endif // defined(BOOST_ASIO_WINDOWS_RUNTIME)
119 #endif // BOOST_ASIO_DETAIL_WINRT_RESOLVE_OP_HPP