boost/asio/detail/impl/reactive_socket_service_base.ipp
//
// detail/reactive_socket_service_base.ipp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2013 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_IMPL_REACTIVE_SOCKET_SERVICE_BASE_IPP
#define BOOST_ASIO_DETAIL_IMPL_REACTIVE_SOCKET_SERVICE_BASE_IPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include <boost/asio/detail/config.hpp>
#if !defined(BOOST_ASIO_HAS_IOCP)
#include <boost/asio/detail/reactive_socket_service_base.hpp>
#include <boost/asio/detail/push_options.hpp>
namespace boost {
namespace asio {
namespace detail {
reactive_socket_service_base::reactive_socket_service_base(
boost::asio::io_service& io_service)
: reactor_(use_service<reactor>(io_service))
{
reactor_.init_task();
}
void reactive_socket_service_base::shutdown_service()
{
}
void reactive_socket_service_base::construct(
reactive_socket_service_base::base_implementation_type& impl)
{
impl.socket_ = invalid_socket;
impl.state_ = 0;
}
void reactive_socket_service_base::base_move_construct(
reactive_socket_service_base::base_implementation_type& impl,
reactive_socket_service_base::base_implementation_type& other_impl)
{
impl.socket_ = other_impl.socket_;
other_impl.socket_ = invalid_socket;
impl.state_ = other_impl.state_;
other_impl.state_ = 0;
reactor_.move_descriptor(impl.socket_,
impl.reactor_data_, other_impl.reactor_data_);
}
void reactive_socket_service_base::base_move_assign(
reactive_socket_service_base::base_implementation_type& impl,
reactive_socket_service_base& other_service,
reactive_socket_service_base::base_implementation_type& other_impl)
{
destroy(impl);
impl.socket_ = other_impl.socket_;
other_impl.socket_ = invalid_socket;
impl.state_ = other_impl.state_;
other_impl.state_ = 0;
other_service.reactor_.move_descriptor(impl.socket_,
impl.reactor_data_, other_impl.reactor_data_);
}
void reactive_socket_service_base::destroy(
reactive_socket_service_base::base_implementation_type& impl)
{
if (impl.socket_ != invalid_socket)
{
BOOST_ASIO_HANDLER_OPERATION(("socket", &impl, "close"));
reactor_.deregister_descriptor(impl.socket_, impl.reactor_data_,
(impl.state_ & socket_ops::possible_dup) == 0);
boost::system::error_code ignored_ec;
socket_ops::close(impl.socket_, impl.state_, true, ignored_ec);
}
}
boost::system::error_code reactive_socket_service_base::close(
reactive_socket_service_base::base_implementation_type& impl,
boost::system::error_code& ec)
{
if (is_open(impl))
{
BOOST_ASIO_HANDLER_OPERATION(("socket", &impl, "close"));
reactor_.deregister_descriptor(impl.socket_, impl.reactor_data_,
(impl.state_ & socket_ops::possible_dup) == 0);
}
socket_ops::close(impl.socket_, impl.state_, false, ec);
// The descriptor is closed by the OS even if close() returns an error.
//
// (Actually, POSIX says the state of the descriptor is unspecified. On
// Linux the descriptor is apparently closed anyway; e.g. see
// http://lkml.org/lkml/2005/9/10/129
// We'll just have to assume that other OSes follow the same behaviour. The
// known exception is when Windows's closesocket() function fails with
// WSAEWOULDBLOCK, but this case is handled inside socket_ops::close().
construct(impl);
return ec;
}
boost::system::error_code reactive_socket_service_base::cancel(
reactive_socket_service_base::base_implementation_type& impl,
boost::system::error_code& ec)
{
if (!is_open(impl))
{
ec = boost::asio::error::bad_descriptor;
return ec;
}
BOOST_ASIO_HANDLER_OPERATION(("socket", &impl, "cancel"));
reactor_.cancel_ops(impl.socket_, impl.reactor_data_);
ec = boost::system::error_code();
return ec;
}
boost::system::error_code reactive_socket_service_base::do_open(
reactive_socket_service_base::base_implementation_type& impl,
int af, int type, int protocol, boost::system::error_code& ec)
{
if (is_open(impl))
{
ec = boost::asio::error::already_open;
return ec;
}
socket_holder sock(socket_ops::socket(af, type, protocol, ec));
if (sock.get() == invalid_socket)
return ec;
if (int err = reactor_.register_descriptor(sock.get(), impl.reactor_data_))
{
ec = boost::system::error_code(err,
boost::asio::error::get_system_category());
return ec;
}
impl.socket_ = sock.release();
switch (type)
{
case SOCK_STREAM: impl.state_ = socket_ops::stream_oriented; break;
case SOCK_DGRAM: impl.state_ = socket_ops::datagram_oriented; break;
default: impl.state_ = 0; break;
}
ec = boost::system::error_code();
return ec;
}
boost::system::error_code reactive_socket_service_base::do_assign(
reactive_socket_service_base::base_implementation_type& impl, int type,
const reactive_socket_service_base::native_handle_type& native_socket,
boost::system::error_code& ec)
{
if (is_open(impl))
{
ec = boost::asio::error::already_open;
return ec;
}
if (int err = reactor_.register_descriptor(
native_socket, impl.reactor_data_))
{
ec = boost::system::error_code(err,
boost::asio::error::get_system_category());
return ec;
}
impl.socket_ = native_socket;
switch (type)
{
case SOCK_STREAM: impl.state_ = socket_ops::stream_oriented; break;
case SOCK_DGRAM: impl.state_ = socket_ops::datagram_oriented; break;
default: impl.state_ = 0; break;
}
impl.state_ |= socket_ops::possible_dup;
ec = boost::system::error_code();
return ec;
}
void reactive_socket_service_base::start_op(
reactive_socket_service_base::base_implementation_type& impl,
int op_type, reactor_op* op, bool is_continuation,
bool is_non_blocking, bool noop)
{
if (!noop)
{
if ((impl.state_ & socket_ops::non_blocking)
|| socket_ops::set_internal_non_blocking(
impl.socket_, impl.state_, true, op->ec_))
{
reactor_.start_op(op_type, impl.socket_,
impl.reactor_data_, op, is_continuation, is_non_blocking);
return;
}
}
reactor_.post_immediate_completion(op, is_continuation);
}
void reactive_socket_service_base::start_accept_op(
reactive_socket_service_base::base_implementation_type& impl,
reactor_op* op, bool is_continuation, bool peer_is_open)
{
if (!peer_is_open)
start_op(impl, reactor::read_op, op, true, is_continuation, false);
else
{
op->ec_ = boost::asio::error::already_open;
reactor_.post_immediate_completion(op, is_continuation);
}
}
void reactive_socket_service_base::start_connect_op(
reactive_socket_service_base::base_implementation_type& impl,
reactor_op* op, bool is_continuation,
const socket_addr_type* addr, size_t addrlen)
{
if ((impl.state_ & socket_ops::non_blocking)
|| socket_ops::set_internal_non_blocking(
impl.socket_, impl.state_, true, op->ec_))
{
if (socket_ops::connect(impl.socket_, addr, addrlen, op->ec_) != 0)
{
if (op->ec_ == boost::asio::error::in_progress
|| op->ec_ == boost::asio::error::would_block)
{
op->ec_ = boost::system::error_code();
reactor_.start_op(reactor::connect_op, impl.socket_,
impl.reactor_data_, op, is_continuation, false);
return;
}
}
}
reactor_.post_immediate_completion(op, is_continuation);
}
} // namespace detail
} // namespace asio
} // namespace boost
#include <boost/asio/detail/pop_options.hpp>
#endif // !defined(BOOST_ASIO_HAS_IOCP)
#endif // BOOST_ASIO_DETAIL_IMPL_REACTIVE_SOCKET_SERVICE_BASE_IPP