| // |
| // detail/reactive_socket_accept_op.hpp |
| // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2010 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 BOOST_ASIO_DETAIL_REACTIVE_SOCKET_ACCEPT_OP_HPP |
| #define BOOST_ASIO_DETAIL_REACTIVE_SOCKET_ACCEPT_OP_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| # pragma once |
| #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
| |
| #include <boost/asio/detail/config.hpp> |
| #include <boost/utility/addressof.hpp> |
| #include <boost/asio/detail/bind_handler.hpp> |
| #include <boost/asio/detail/buffer_sequence_adapter.hpp> |
| #include <boost/asio/detail/fenced_block.hpp> |
| #include <boost/asio/detail/reactor_op.hpp> |
| #include <boost/asio/detail/socket_holder.hpp> |
| #include <boost/asio/detail/socket_ops.hpp> |
| |
| #include <boost/asio/detail/push_options.hpp> |
| |
| namespace boost { |
| namespace asio { |
| namespace detail { |
| |
| template <typename Socket, typename Protocol> |
| class reactive_socket_accept_op_base : public reactor_op |
| { |
| public: |
| reactive_socket_accept_op_base(socket_type socket, |
| socket_ops::state_type state, Socket& peer, const Protocol& protocol, |
| typename Protocol::endpoint* peer_endpoint, func_type complete_func) |
| : reactor_op(&reactive_socket_accept_op_base::do_perform, complete_func), |
| socket_(socket), |
| state_(state), |
| peer_(peer), |
| protocol_(protocol), |
| peer_endpoint_(peer_endpoint) |
| { |
| } |
| |
| static bool do_perform(reactor_op* base) |
| { |
| reactive_socket_accept_op_base* o( |
| static_cast<reactive_socket_accept_op_base*>(base)); |
| |
| std::size_t addrlen = o->peer_endpoint_ ? o->peer_endpoint_->capacity() : 0; |
| socket_type new_socket = invalid_socket; |
| bool result = socket_ops::non_blocking_accept(o->socket_, |
| o->state_, o->peer_endpoint_ ? o->peer_endpoint_->data() : 0, |
| o->peer_endpoint_ ? &addrlen : 0, o->ec_, new_socket); |
| |
| // On success, assign new connection to peer socket object. |
| if (new_socket >= 0) |
| { |
| socket_holder new_socket_holder(new_socket); |
| if (o->peer_endpoint_) |
| o->peer_endpoint_->resize(addrlen); |
| if (!o->peer_.assign(o->protocol_, new_socket, o->ec_)) |
| new_socket_holder.release(); |
| } |
| |
| return result; |
| } |
| |
| private: |
| socket_type socket_; |
| socket_ops::state_type state_; |
| Socket& peer_; |
| Protocol protocol_; |
| typename Protocol::endpoint* peer_endpoint_; |
| }; |
| |
| template <typename Socket, typename Protocol, typename Handler> |
| class reactive_socket_accept_op : |
| public reactive_socket_accept_op_base<Socket, Protocol> |
| { |
| public: |
| BOOST_ASIO_DEFINE_HANDLER_PTR(reactive_socket_accept_op); |
| |
| reactive_socket_accept_op(socket_type socket, |
| socket_ops::state_type state, Socket& peer, const Protocol& protocol, |
| typename Protocol::endpoint* peer_endpoint, Handler handler) |
| : reactive_socket_accept_op_base<Socket, Protocol>(socket, state, peer, |
| protocol, peer_endpoint, &reactive_socket_accept_op::do_complete), |
| handler_(handler) |
| { |
| } |
| |
| static void do_complete(io_service_impl* owner, operation* base, |
| boost::system::error_code /*ec*/, std::size_t /*bytes_transferred*/) |
| { |
| // Take ownership of the handler object. |
| reactive_socket_accept_op* o(static_cast<reactive_socket_accept_op*>(base)); |
| ptr p = { boost::addressof(o->handler_), o, o }; |
| |
| // 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::binder1<Handler, boost::system::error_code> |
| handler(o->handler_, o->ec_); |
| p.h = boost::addressof(handler.handler_); |
| p.reset(); |
| |
| // Make the upcall if required. |
| if (owner) |
| { |
| boost::asio::detail::fenced_block b; |
| boost_asio_handler_invoke_helpers::invoke(handler, handler.handler_); |
| } |
| } |
| |
| private: |
| Handler handler_; |
| }; |
| |
| } // namespace detail |
| } // namespace asio |
| } // namespace boost |
| |
| #include <boost/asio/detail/pop_options.hpp> |
| |
| #endif // BOOST_ASIO_DETAIL_REACTIVE_SOCKET_ACCEPT_OP_HPP |