/Src/Dependencies/Boost/boost/asio/detail/win_iocp_socket_service.hpp
http://hadesmem.googlecode.com/ · C++ Header · 509 lines · 373 code · 78 blank · 58 comment · 13 complexity · 45175a9fd187b2fb9c28d1d547faea56 MD5 · raw file
- //
- // detail/win_iocp_socket_service.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_WIN_IOCP_SOCKET_SERVICE_HPP
- #define BOOST_ASIO_DETAIL_WIN_IOCP_SOCKET_SERVICE_HPP
- #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 <cstring>
- #include <boost/utility/addressof.hpp>
- #include <boost/asio/error.hpp>
- #include <boost/asio/io_service.hpp>
- #include <boost/asio/socket_base.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/handler_alloc_helpers.hpp>
- #include <boost/asio/detail/handler_invoke_helpers.hpp>
- #include <boost/asio/detail/mutex.hpp>
- #include <boost/asio/detail/operation.hpp>
- #include <boost/asio/detail/reactive_socket_connect_op.hpp>
- #include <boost/asio/detail/reactor.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/socket_types.hpp>
- #include <boost/asio/detail/win_iocp_io_service.hpp>
- #include <boost/asio/detail/win_iocp_null_buffers_op.hpp>
- #include <boost/asio/detail/win_iocp_socket_accept_op.hpp>
- #include <boost/asio/detail/win_iocp_socket_recvfrom_op.hpp>
- #include <boost/asio/detail/win_iocp_socket_send_op.hpp>
- #include <boost/asio/detail/win_iocp_socket_service_base.hpp>
- #include <boost/asio/detail/push_options.hpp>
- namespace boost {
- namespace asio {
- namespace detail {
- template <typename Protocol>
- class win_iocp_socket_service : public win_iocp_socket_service_base
- {
- public:
- // The protocol type.
- typedef Protocol protocol_type;
- // The endpoint type.
- typedef typename Protocol::endpoint endpoint_type;
- // The native type of a socket.
- class native_handle_type
- {
- public:
- native_handle_type(socket_type s)
- : socket_(s),
- have_remote_endpoint_(false)
- {
- }
- native_handle_type(socket_type s, const endpoint_type& ep)
- : socket_(s),
- have_remote_endpoint_(true),
- remote_endpoint_(ep)
- {
- }
- void operator=(socket_type s)
- {
- socket_ = s;
- have_remote_endpoint_ = false;
- remote_endpoint_ = endpoint_type();
- }
- operator socket_type() const
- {
- return socket_;
- }
- bool have_remote_endpoint() const
- {
- return have_remote_endpoint_;
- }
- endpoint_type remote_endpoint() const
- {
- return remote_endpoint_;
- }
- private:
- socket_type socket_;
- bool have_remote_endpoint_;
- endpoint_type remote_endpoint_;
- };
- // The implementation type of the socket.
- struct implementation_type :
- win_iocp_socket_service_base::base_implementation_type
- {
- // Default constructor.
- implementation_type()
- : protocol_(endpoint_type().protocol()),
- have_remote_endpoint_(false),
- remote_endpoint_()
- {
- }
- // The protocol associated with the socket.
- protocol_type protocol_;
- // Whether we have a cached remote endpoint.
- bool have_remote_endpoint_;
- // A cached remote endpoint.
- endpoint_type remote_endpoint_;
- };
- // Constructor.
- win_iocp_socket_service(boost::asio::io_service& io_service)
- : win_iocp_socket_service_base(io_service)
- {
- }
- // Move-construct a new socket implementation.
- void move_construct(implementation_type& impl,
- implementation_type& other_impl)
- {
- this->base_move_construct(impl, other_impl);
- impl.protocol_ = other_impl.protocol_;
- other_impl.protocol_ = endpoint_type().protocol();
- impl.have_remote_endpoint_ = other_impl.have_remote_endpoint_;
- other_impl.have_remote_endpoint_ = false;
- impl.remote_endpoint_ = other_impl.remote_endpoint_;
- other_impl.remote_endpoint_ = endpoint_type();
- }
- // Move-assign from another socket implementation.
- void move_assign(implementation_type& impl,
- win_iocp_socket_service_base& other_service,
- implementation_type& other_impl)
- {
- this->base_move_assign(impl, other_service, other_impl);
- impl.protocol_ = other_impl.protocol_;
- other_impl.protocol_ = endpoint_type().protocol();
- impl.have_remote_endpoint_ = other_impl.have_remote_endpoint_;
- other_impl.have_remote_endpoint_ = false;
- impl.remote_endpoint_ = other_impl.remote_endpoint_;
- other_impl.remote_endpoint_ = endpoint_type();
- }
- // Open a new socket implementation.
- boost::system::error_code open(implementation_type& impl,
- const protocol_type& protocol, boost::system::error_code& ec)
- {
- if (!do_open(impl, protocol.family(),
- protocol.type(), protocol.protocol(), ec))
- {
- impl.protocol_ = protocol;
- impl.have_remote_endpoint_ = false;
- impl.remote_endpoint_ = endpoint_type();
- }
- return ec;
- }
- // Assign a native socket to a socket implementation.
- boost::system::error_code assign(implementation_type& impl,
- const protocol_type& protocol, const native_handle_type& native_socket,
- boost::system::error_code& ec)
- {
- if (!do_assign(impl, protocol.type(), native_socket, ec))
- {
- impl.protocol_ = protocol;
- impl.have_remote_endpoint_ = native_socket.have_remote_endpoint();
- impl.remote_endpoint_ = native_socket.remote_endpoint();
- }
- return ec;
- }
- // Get the native socket representation.
- native_handle_type native_handle(implementation_type& impl)
- {
- if (impl.have_remote_endpoint_)
- return native_handle_type(impl.socket_, impl.remote_endpoint_);
- return native_handle_type(impl.socket_);
- }
- // Bind the socket to the specified local endpoint.
- boost::system::error_code bind(implementation_type& impl,
- const endpoint_type& endpoint, boost::system::error_code& ec)
- {
- socket_ops::bind(impl.socket_, endpoint.data(), endpoint.size(), ec);
- return ec;
- }
- // Set a socket option.
- template <typename Option>
- boost::system::error_code set_option(implementation_type& impl,
- const Option& option, boost::system::error_code& ec)
- {
- socket_ops::setsockopt(impl.socket_, impl.state_,
- option.level(impl.protocol_), option.name(impl.protocol_),
- option.data(impl.protocol_), option.size(impl.protocol_), ec);
- return ec;
- }
- // Set a socket option.
- template <typename Option>
- boost::system::error_code get_option(const implementation_type& impl,
- Option& option, boost::system::error_code& ec) const
- {
- std::size_t size = option.size(impl.protocol_);
- socket_ops::getsockopt(impl.socket_, impl.state_,
- option.level(impl.protocol_), option.name(impl.protocol_),
- option.data(impl.protocol_), &size, ec);
- if (!ec)
- option.resize(impl.protocol_, size);
- return ec;
- }
- // Get the local endpoint.
- endpoint_type local_endpoint(const implementation_type& impl,
- boost::system::error_code& ec) const
- {
- endpoint_type endpoint;
- std::size_t addr_len = endpoint.capacity();
- if (socket_ops::getsockname(impl.socket_, endpoint.data(), &addr_len, ec))
- return endpoint_type();
- endpoint.resize(addr_len);
- return endpoint;
- }
- // Get the remote endpoint.
- endpoint_type remote_endpoint(const implementation_type& impl,
- boost::system::error_code& ec) const
- {
- endpoint_type endpoint = impl.remote_endpoint_;
- std::size_t addr_len = endpoint.capacity();
- if (socket_ops::getpeername(impl.socket_, endpoint.data(),
- &addr_len, impl.have_remote_endpoint_, ec))
- return endpoint_type();
- endpoint.resize(addr_len);
- return endpoint;
- }
- // Send a datagram to the specified endpoint. Returns the number of bytes
- // sent.
- template <typename ConstBufferSequence>
- size_t send_to(implementation_type& impl, const ConstBufferSequence& buffers,
- const endpoint_type& destination, socket_base::message_flags flags,
- boost::system::error_code& ec)
- {
- buffer_sequence_adapter<boost::asio::const_buffer,
- ConstBufferSequence> bufs(buffers);
- return socket_ops::sync_sendto(impl.socket_, impl.state_,
- bufs.buffers(), bufs.count(), flags,
- destination.data(), destination.size(), ec);
- }
- // Wait until data can be sent without blocking.
- size_t send_to(implementation_type& impl, const null_buffers&,
- const endpoint_type&, socket_base::message_flags,
- boost::system::error_code& ec)
- {
- // Wait for socket to become ready.
- socket_ops::poll_write(impl.socket_, ec);
- return 0;
- }
- // Start an asynchronous send. The data being sent must be valid for the
- // lifetime of the asynchronous operation.
- template <typename ConstBufferSequence, typename Handler>
- void async_send_to(implementation_type& impl,
- const ConstBufferSequence& buffers, const endpoint_type& destination,
- socket_base::message_flags flags, Handler handler)
- {
- // Allocate and construct an operation to wrap the handler.
- typedef win_iocp_socket_send_op<ConstBufferSequence, Handler> op;
- typename op::ptr p = { boost::addressof(handler),
- boost_asio_handler_alloc_helpers::allocate(
- sizeof(op), handler), 0 };
- p.p = new (p.v) op(impl.cancel_token_, buffers, handler);
- BOOST_ASIO_HANDLER_CREATION((p.p, "socket", &impl, "async_send_to"));
- buffer_sequence_adapter<boost::asio::const_buffer,
- ConstBufferSequence> bufs(buffers);
- start_send_to_op(impl, bufs.buffers(), bufs.count(),
- destination.data(), static_cast<int>(destination.size()),
- flags, p.p);
- p.v = p.p = 0;
- }
- // Start an asynchronous wait until data can be sent without blocking.
- template <typename Handler>
- void async_send_to(implementation_type& impl, const null_buffers&,
- const endpoint_type&, socket_base::message_flags, Handler handler)
- {
- // Allocate and construct an operation to wrap the handler.
- typedef win_iocp_null_buffers_op<Handler> op;
- typename op::ptr p = { boost::addressof(handler),
- boost_asio_handler_alloc_helpers::allocate(
- sizeof(op), handler), 0 };
- p.p = new (p.v) op(impl.cancel_token_, handler);
- BOOST_ASIO_HANDLER_CREATION((p.p, "socket",
- &impl, "async_send_to(null_buffers)"));
- start_reactor_op(impl, reactor::write_op, p.p);
- p.v = p.p = 0;
- }
- // Receive a datagram with the endpoint of the sender. Returns the number of
- // bytes received.
- template <typename MutableBufferSequence>
- size_t receive_from(implementation_type& impl,
- const MutableBufferSequence& buffers,
- endpoint_type& sender_endpoint, socket_base::message_flags flags,
- boost::system::error_code& ec)
- {
- buffer_sequence_adapter<boost::asio::mutable_buffer,
- MutableBufferSequence> bufs(buffers);
- std::size_t addr_len = sender_endpoint.capacity();
- std::size_t bytes_recvd = socket_ops::sync_recvfrom(
- impl.socket_, impl.state_, bufs.buffers(), bufs.count(),
- flags, sender_endpoint.data(), &addr_len, ec);
- if (!ec)
- sender_endpoint.resize(addr_len);
- return bytes_recvd;
- }
- // Wait until data can be received without blocking.
- size_t receive_from(implementation_type& impl,
- const null_buffers&, endpoint_type& sender_endpoint,
- socket_base::message_flags, boost::system::error_code& ec)
- {
- // Wait for socket to become ready.
- socket_ops::poll_read(impl.socket_, ec);
- // Reset endpoint since it can be given no sensible value at this time.
- sender_endpoint = endpoint_type();
- return 0;
- }
- // Start an asynchronous receive. The buffer for the data being received and
- // the sender_endpoint object must both be valid for the lifetime of the
- // asynchronous operation.
- template <typename MutableBufferSequence, typename Handler>
- void async_receive_from(implementation_type& impl,
- const MutableBufferSequence& buffers, endpoint_type& sender_endp,
- socket_base::message_flags flags, Handler handler)
- {
- // Allocate and construct an operation to wrap the handler.
- typedef win_iocp_socket_recvfrom_op<
- MutableBufferSequence, endpoint_type, Handler> op;
- typename op::ptr p = { boost::addressof(handler),
- boost_asio_handler_alloc_helpers::allocate(
- sizeof(op), handler), 0 };
- p.p = new (p.v) op(sender_endp, impl.cancel_token_, buffers, handler);
- BOOST_ASIO_HANDLER_CREATION((p.p, "socket", &impl, "async_receive_from"));
- buffer_sequence_adapter<boost::asio::mutable_buffer,
- MutableBufferSequence> bufs(buffers);
- start_receive_from_op(impl, bufs.buffers(), bufs.count(),
- sender_endp.data(), flags, &p.p->endpoint_size(), p.p);
- p.v = p.p = 0;
- }
- // Wait until data can be received without blocking.
- template <typename Handler>
- void async_receive_from(implementation_type& impl,
- const null_buffers&, endpoint_type& sender_endpoint,
- socket_base::message_flags flags, Handler handler)
- {
- // Allocate and construct an operation to wrap the handler.
- typedef win_iocp_null_buffers_op<Handler> op;
- typename op::ptr p = { boost::addressof(handler),
- boost_asio_handler_alloc_helpers::allocate(
- sizeof(op), handler), 0 };
- p.p = new (p.v) op(impl.cancel_token_, handler);
- BOOST_ASIO_HANDLER_CREATION((p.p, "socket", &impl,
- "async_receive_from(null_buffers)"));
- // Reset endpoint since it can be given no sensible value at this time.
- sender_endpoint = endpoint_type();
- start_null_buffers_receive_op(impl, flags, p.p);
- p.v = p.p = 0;
- }
- // Accept a new connection.
- template <typename Socket>
- boost::system::error_code accept(implementation_type& impl, Socket& peer,
- endpoint_type* peer_endpoint, boost::system::error_code& ec)
- {
- // We cannot accept a socket that is already open.
- if (peer.is_open())
- {
- ec = boost::asio::error::already_open;
- return ec;
- }
- std::size_t addr_len = peer_endpoint ? peer_endpoint->capacity() : 0;
- socket_holder new_socket(socket_ops::sync_accept(impl.socket_,
- impl.state_, peer_endpoint ? peer_endpoint->data() : 0,
- peer_endpoint ? &addr_len : 0, ec));
- // On success, assign new connection to peer socket object.
- if (new_socket.get() >= 0)
- {
- if (peer_endpoint)
- peer_endpoint->resize(addr_len);
- if (!peer.assign(impl.protocol_, new_socket.get(), ec))
- new_socket.release();
- }
- return ec;
- }
- // Start an asynchronous accept. The peer and peer_endpoint objects
- // must be valid until the accept's handler is invoked.
- template <typename Socket, typename Handler>
- void async_accept(implementation_type& impl, Socket& peer,
- endpoint_type* peer_endpoint, Handler handler)
- {
- // Allocate and construct an operation to wrap the handler.
- typedef win_iocp_socket_accept_op<Socket, protocol_type, Handler> op;
- typename op::ptr p = { boost::addressof(handler),
- boost_asio_handler_alloc_helpers::allocate(
- sizeof(op), handler), 0 };
- bool enable_connection_aborted =
- (impl.state_ & socket_ops::enable_connection_aborted) != 0;
- p.p = new (p.v) op(*this, impl.socket_, peer, impl.protocol_,
- peer_endpoint, enable_connection_aborted, handler);
- BOOST_ASIO_HANDLER_CREATION((p.p, "socket", &impl, "async_accept"));
- start_accept_op(impl, peer.is_open(), p.p->new_socket(),
- impl.protocol_.family(), impl.protocol_.type(),
- impl.protocol_.protocol(), p.p->output_buffer(),
- p.p->address_length(), p.p);
- p.v = p.p = 0;
- }
- // Connect the socket to the specified endpoint.
- boost::system::error_code connect(implementation_type& impl,
- const endpoint_type& peer_endpoint, boost::system::error_code& ec)
- {
- socket_ops::sync_connect(impl.socket_,
- peer_endpoint.data(), peer_endpoint.size(), ec);
- return ec;
- }
- // Start an asynchronous connect.
- template <typename Handler>
- void async_connect(implementation_type& impl,
- const endpoint_type& peer_endpoint, Handler handler)
- {
- // Allocate and construct an operation to wrap the handler.
- typedef reactive_socket_connect_op<Handler> op;
- typename op::ptr p = { boost::addressof(handler),
- boost_asio_handler_alloc_helpers::allocate(
- sizeof(op), handler), 0 };
- p.p = new (p.v) op(impl.socket_, handler);
- BOOST_ASIO_HANDLER_CREATION((p.p, "socket", &impl, "async_connect"));
- start_connect_op(impl, p.p, peer_endpoint.data(),
- static_cast<int>(peer_endpoint.size()));
- p.v = p.p = 0;
- }
- };
- } // namespace detail
- } // namespace asio
- } // namespace boost
- #include <boost/asio/detail/pop_options.hpp>
- #endif // defined(BOOST_ASIO_HAS_IOCP)
- #endif // BOOST_ASIO_DETAIL_WIN_IOCP_SOCKET_SERVICE_HPP