1 // 2 // detail/win_iocp_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_WIN_IOCP_SOCKET_CONNECT_OP_HPP 12 #define BOOST_ASIO_DETAIL_WIN_IOCP_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_HAS_IOCP) 21 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/reactor_op.hpp> 28 #include <boost/asio/detail/socket_ops.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 class win_iocp_socket_connect_op_base : public reactor_op 38 { 39 public: win_iocp_socket_connect_op_base(socket_type socket,func_type complete_func)40 win_iocp_socket_connect_op_base(socket_type socket, func_type complete_func) 41 : reactor_op(&win_iocp_socket_connect_op_base::do_perform, complete_func), 42 socket_(socket), 43 connect_ex_(false) 44 { 45 } 46 do_perform(reactor_op * base)47 static bool do_perform(reactor_op* base) 48 { 49 win_iocp_socket_connect_op_base* o( 50 static_cast<win_iocp_socket_connect_op_base*>(base)); 51 52 return socket_ops::non_blocking_connect(o->socket_, o->ec_); 53 } 54 55 socket_type socket_; 56 bool connect_ex_; 57 }; 58 59 template <typename Handler> 60 class win_iocp_socket_connect_op : public win_iocp_socket_connect_op_base 61 { 62 public: 63 BOOST_ASIO_DEFINE_HANDLER_PTR(win_iocp_socket_connect_op); 64 win_iocp_socket_connect_op(socket_type socket,Handler & handler)65 win_iocp_socket_connect_op(socket_type socket, Handler& handler) 66 : win_iocp_socket_connect_op_base(socket, 67 &win_iocp_socket_connect_op::do_complete), 68 handler_(BOOST_ASIO_MOVE_CAST(Handler)(handler)) 69 { 70 } 71 do_complete(io_service_impl * owner,operation * base,const boost::system::error_code & result_ec,std::size_t)72 static void do_complete(io_service_impl* owner, operation* base, 73 const boost::system::error_code& result_ec, 74 std::size_t /*bytes_transferred*/) 75 { 76 boost::system::error_code ec(result_ec); 77 78 // Take ownership of the operation object. 79 win_iocp_socket_connect_op* o( 80 static_cast<win_iocp_socket_connect_op*>(base)); 81 ptr p = { boost::asio::detail::addressof(o->handler_), o, o }; 82 83 if (owner) 84 { 85 if (o->connect_ex_) 86 socket_ops::complete_iocp_connect(o->socket_, ec); 87 else 88 ec = o->ec_; 89 } 90 91 BOOST_ASIO_HANDLER_COMPLETION((o)); 92 93 // Make a copy of the handler so that the memory can be deallocated before 94 // the upcall is made. Even if we're not about to make an upcall, a 95 // sub-object of the handler may be the true owner of the memory associated 96 // with the handler. Consequently, a local copy of the handler is required 97 // to ensure that any owning sub-object remains valid until after we have 98 // deallocated the memory here. 99 detail::binder1<Handler, boost::system::error_code> 100 handler(o->handler_, ec); 101 p.h = boost::asio::detail::addressof(handler.handler_); 102 p.reset(); 103 104 // Make the upcall if required. 105 if (owner) 106 { 107 fenced_block b(fenced_block::half); 108 BOOST_ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_)); 109 boost_asio_handler_invoke_helpers::invoke(handler, handler.handler_); 110 BOOST_ASIO_HANDLER_INVOCATION_END; 111 } 112 } 113 114 private: 115 Handler handler_; 116 }; 117 118 } // namespace detail 119 } // namespace asio 120 } // namespace boost 121 122 #include <boost/asio/detail/pop_options.hpp> 123 124 #endif // defined(BOOST_ASIO_HAS_IOCP) 125 126 #endif // BOOST_ASIO_DETAIL_WIN_IOCP_SOCKET_CONNECT_OP_HPP 127