SubSystemController.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_SUBSYSTEMCONTROLLER_H__
#define __I6ENGINE_CORE_SUBSYSTEMCONTROLLER_H__

#include <cstdint>
#include <mutex>
#include <set>

#include "i6engine/utils/i6eSystemParameters.h"

#include "i6engine/core/configs/SubsystemConfig.h"

#include "boost/thread.hpp"

namespace i6e {
namespace core {

        class EngineControllerInterface;
        class EngineCoreController;
        class ModuleController;

        enum class SubsystemType;

        typedef struct {
                ModuleController * module;
                SubsystemType type;
                uint32_t framerate;
                std::set<Subsystem> waitingFor;
        } QueuedModule;

        class ISIXE_CORE_API SubSystemController {
                /* Only the EngineCoreController should run methods of this class */
                friend class EngineCoreController;

        public:
                SubSystemController();

                inline bool getGlobalShutDown() const { return _bolGlobalShutDown; }

                void ShutDown();

                void JoinAllSubsystems();

                inline void SubSystemInitialized() { _bolWaitForInit = false; }

                void QueueSubSystemStart(ModuleController * objSubsystem, const uint32_t lngFrameTime);

                void QueueSubSystemStart(ModuleController * objSubsystem, const std::set<Subsystem> & waitingFor);

                inline size_t GetSubSystemAmount() const { return _objQueuedSubSystems.size(); }

                bool isShutdownComplete();

                void registerController(EngineCoreController * ecc) { _coreController = ecc; }

        private:
                bool _bolGlobalShutDown;
                bool _bolWaitForInit;
                std::vector<boost::thread *> _objThreadGrp;
                std::vector<QueuedModule> _objQueuedSubSystems;
                EngineCoreController * _coreController;
                std::mutex _lock;

                void Start();

                void startSubSystemTicking(ModuleController * objSubSystem, const uint32_t lngFrameTime);

                void startSubSystemWaiting(ModuleController * objSubSystem, const std::set<Subsystem> & waitingFor);

                SubSystemController(const SubSystemController &) = delete;

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

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

#endif /* __I6ENGINE_CORE_SUBSYSTEMCONTROLLER_H__ */