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