ConnectionManager.hpp

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/***************************************************************************
  tag: Peter Soetens  Thu Oct 22 11:59:08 CEST 2009  ConnectionManager.hpp

                        ConnectionManager.hpp -  description
                           -------------------
    begin                : Thu October 22 2009
    copyright            : (C) 2009 Peter Soetens
    email                : peter@thesourcworks.com

 ***************************************************************************
 *   This library is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU General Public                   *
 *   License as published by the Free Software Foundation;                 *
 *   version 2 of the License.                                             *
 *                                                                         *
 *   As a special exception, you may use this file as part of a free       *
 *   software library without restriction.  Specifically, if other files   *
 *   instantiate templates or use macros or inline functions from this     *
 *   file, or you compile this file and link it with other files to        *
 *   produce an executable, this file does not by itself cause the         *
 *   resulting executable to be covered by the GNU General Public          *
 *   License.  This exception does not however invalidate any other        *
 *   reasons why the executable file might be covered by the GNU General   *
 *   Public License.                                                       *
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 *   This library is distributed in the hope that it will be useful,       *
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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
 *   Lesser General Public License for more details.                       *
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 *   Foundation, Inc., 59 Temple Place,                                    *
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 ***************************************************************************/


/*
 * ConnectionManager.hpp
 *
 *  Created on: Oct 9, 2009
 *      Author: kaltan
 */

#ifndef CONNECTIONMANAGER_HPP_
#define CONNECTIONMANAGER_HPP_


#include "ConnID.hpp"
#include "List.hpp"
#include "SharedConnection.hpp"
#include "../ConnPolicy.hpp"
#include "../os/Mutex.hpp"
#include "../base/rtt-base-fwd.hpp"
#include "../base/ChannelElementBase.hpp"
#include <boost/tuple/tuple.hpp>
#include <boost/function.hpp>
#include <boost/bind.hpp>
#include <boost/shared_ptr.hpp>

#include <rtt/os/Mutex.hpp>
#include <rtt/os/MutexLock.hpp>
#include <list>


namespace RTT
{

    namespace internal
    {
        class RTT_API ConnectionManager
        {
        public:
            typedef boost::tuple<boost::shared_ptr<ConnID>, base::ChannelElementBase::shared_ptr, ConnPolicy> ChannelDescriptor;

            typedef std::list<ChannelDescriptor> Connections;

            ConnectionManager(base::PortInterface* port);
            ~ConnectionManager();

            bool addConnection(ConnID* port_id, base::ChannelElementBase::shared_ptr channel, ConnPolicy policy);

            bool removeConnection(ConnID* port_id, bool disconnect = true);
            bool removeConnection(base::ChannelElementBase* channel, bool disconnect = true);

            void disconnect();

            bool connected() const;

            bool connectedTo(base::PortInterface* port);


            bool disconnect(base::PortInterface* port);

            bool isSingleConnection() const { return connections.size() == 1; }

            Connections getConnections() const {
                return connections;
            }

            internal::SharedConnectionBase::shared_ptr getSharedConnection() const {
                return shared_connection;
            }

//            /**
//             * Locks the mutex protecting the channel element list.
//             * */
//            void lock() const {
//                connection_lock.lock();
//            };

//            /**
//             * Unlocks the mutex protecting the channel element list.
//             * */
//            void unlock() const {
//                connection_lock.unlock();
//            }

        protected:

            Connections::iterator eraseConnection(const Connections::iterator& descriptor, bool disconnect);

            base::PortInterface* mport;

            std::list< ChannelDescriptor > connections;

            internal::SharedConnectionBase::shared_ptr shared_connection;
        };

    }

}

#endif /* CONNECTIONMANAGER_HPP_ */