MessagingController.h

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/*
 * i6engine
 * Copyright (2016) Daniel Bonrath, Michael Baer, All rights reserved.
 *
 * This file is part of i6engine; i6engine is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#ifndef __I6ENGINE_CORE_MESSAGINGCONTROLLER_H__
#define __I6ENGINE_CORE_MESSAGINGCONTROLLER_H__

#include <condition_variable>
#include <list>
#include <map>
#include <mutex>

#include "i6engine/utils/DoubleBufferQueue.h"

#include "i6engine/core/messaging/Message.h"
#include "i6engine/core/subsystem/ModuleController.h"

namespace i6e {
namespace core {

        class EngineCoreController;
        class MessageSubscriber;

        class ISIXE_CORE_API MessagingController {
        public:
                MessagingController();

                ~MessagingController();

                void registerMessageType(uint16_t messageType, MessageSubscriber * objMessageSubscriber);

                void unregisterMessageType(uint16_t messageType, MessageSubscriber * objMessageSubscriber);

                void deliverMessage(const Message::Ptr & msg);

                void clear();

        private:
                void deliverMessages();

                void deliverMessageToSubscribers(const Message::Ptr & msg) const;

                std::map<uint16_t, std::vector<MessageSubscriber *>> _objMessageTypeDictionary;

                mutable std::mutex _dictionaryMutex;

                utils::DoubleBufferQueue<Message::Ptr, true, false> _msgQueue;

                boost::thread * _deliverThread;

                std::condition_variable _condVar;
                std::mutex _condMutex;

                bool _running;

                MessagingController(const MessagingController &) = delete;

                MessagingController & operator=(const MessagingController &) = delete;
        };

} /* namespace core */
} /* namespace i6e */

#endif /* __I6ENGINE_CORE_MESSAGINGCONTROLLER_H__ */