// | |
// detail/reactive_socket_accept_op.hpp | |
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
// | |
// Copyright (c) 2003-2011 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 |