| // |
| // detail/winrt_resolve_op.hpp |
| // ~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com) |
| // |
| // Distributed under the Boost Software License, Version 1.0. (See accompanying |
| // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| // |
| |
| #ifndef ASIO_DETAIL_WINRT_RESOLVE_OP_HPP |
| #define ASIO_DETAIL_WINRT_RESOLVE_OP_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| # pragma once |
| #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
| |
| #include "asio/detail/config.hpp" |
| |
| #if defined(ASIO_WINDOWS_RUNTIME) |
| |
| #include "asio/detail/bind_handler.hpp" |
| #include "asio/detail/fenced_block.hpp" |
| #include "asio/detail/handler_alloc_helpers.hpp" |
| #include "asio/detail/handler_invoke_helpers.hpp" |
| #include "asio/detail/memory.hpp" |
| #include "asio/detail/winrt_async_op.hpp" |
| #include "asio/ip/basic_resolver_results.hpp" |
| #include "asio/error.hpp" |
| |
| #include "asio/detail/push_options.hpp" |
| |
| namespace asio { |
| namespace detail { |
| |
| template <typename Protocol, typename Handler> |
| class winrt_resolve_op : |
| public winrt_async_op< |
| Windows::Foundation::Collections::IVectorView< |
| Windows::Networking::EndpointPair^>^> |
| { |
| public: |
| ASIO_DEFINE_HANDLER_PTR(winrt_resolve_op); |
| |
| typedef typename Protocol::endpoint endpoint_type; |
| typedef asio::ip::basic_resolver_query<Protocol> query_type; |
| typedef asio::ip::basic_resolver_results<Protocol> results_type; |
| |
| winrt_resolve_op(const query_type& query, Handler& handler) |
| : winrt_async_op< |
| Windows::Foundation::Collections::IVectorView< |
| Windows::Networking::EndpointPair^>^>( |
| &winrt_resolve_op::do_complete), |
| query_(query), |
| handler_(ASIO_MOVE_CAST(Handler)(handler)) |
| { |
| handler_work<Handler>::start(handler_); |
| } |
| |
| static void do_complete(void* owner, operation* base, |
| const asio::error_code&, std::size_t) |
| { |
| // Take ownership of the operation object. |
| winrt_resolve_op* o(static_cast<winrt_resolve_op*>(base)); |
| ptr p = { asio::detail::addressof(o->handler_), o, o }; |
| handler_work<Handler> w(o->handler_); |
| |
| ASIO_HANDLER_COMPLETION((*o)); |
| |
| results_type results = results_type(); |
| if (!o->ec_) |
| { |
| try |
| { |
| results = results_type::create(o->result_, o->query_.hints(), |
| o->query_.host_name(), o->query_.service_name()); |
| } |
| catch (Platform::Exception^ e) |
| { |
| o->ec_ = asio::error_code(e->HResult, |
| asio::system_category()); |
| } |
| } |
| |
| // Make a copy of the handler so that the memory can be deallocated before |
| // the upcall is made. Even if we're not about to make an upcall, a |
| // sub-object of the handler may be the true owner of the memory associated |
| // with the handler. Consequently, a local copy of the handler is required |
| // to ensure that any owning sub-object remains valid until after we have |
| // deallocated the memory here. |
| detail::binder2<Handler, asio::error_code, results_type> |
| handler(o->handler_, o->ec_, results); |
| p.h = asio::detail::addressof(handler.handler_); |
| p.reset(); |
| |
| // Make the upcall if required. |
| if (owner) |
| { |
| fenced_block b(fenced_block::half); |
| ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_, "...")); |
| w.complete(handler, handler.handler_); |
| ASIO_HANDLER_INVOCATION_END; |
| } |
| } |
| |
| private: |
| query_type query_; |
| Handler handler_; |
| }; |
| |
| } // namespace detail |
| } // namespace asio |
| |
| #include "asio/detail/pop_options.hpp" |
| |
| #endif // defined(ASIO_WINDOWS_RUNTIME) |
| |
| #endif // ASIO_DETAIL_WINRT_RESOLVE_OP_HPP |