TimerManager.h

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/*****************************************************************************
 * Copyright (C) 2011 by Benjamin Hadorn (b_hadorn@bluewin.ch)
 *****************************************************************************
 * Project    : Zeus Base Library
 * Module     : TimerManager
 * Package    : Zeus.ZeusBase.System
 * Author     : Michael Luethi
 * Date       : 27.12.2011
 * System     : Zeus-Framework
 *****************************************************************************
 * Licence:                                                                  *
 *   This library 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 St, Fifth Floor, Boston, MA 02110, USA    *
 *****************************************************************************/

/*****************************************************************************
 * Changes:
 *  27.12.2011 bha: created zeus 2.0
 *****************************************************************************/

#ifndef TimerManagerH
#define TimerManagerH

#include <zeusbase/System/Interfaces/ITimerManager.hpp>
#include <zeusbase/System/Interfaces/IRunnable.hpp>
#include <zeusbase/System/SingleLinkedList.hpp>
#include <zeusbase/System/ZObject.h>

BEGIN_NAMESPACE_Zeus

class ITimerEventObserver;
class TTimerEventGroupContainer;
class TThread;
class TEvent;
class TCriticalSection;
class TTimerEventHandleCreator;
class TTimerEvent;

/*****************************************************************************/
/*****************************************************************************/
class TTimerManager : public TZObject, public ITimerManager, public IRunnable
{
  public:
    //Methods of ITimerManager
    virtual Int MQUALIFIER registerEventObserver(ITimerEventObserver & rObserver, Int iTime, bool bPeriodic);
    virtual void MQUALIFIER deregisterEventObserver(Int& riHandle);
    
    //Methods of IRunnable
    virtual void MQUALIFIER execute();

    static inline TTimerManager& getInstance();
    void setDelegationInterface(ITimerManager& rTimerManager);
    void releaseDelegationInterface();

    //Methods of IZUnknown
    MEMORY_MANAGER_DECL

  protected:
    TTimerManager();
    virtual ~TTimerManager();


  private:
    Int getNormedTimestamp();
    Int normalizeTime(Int iTime);
    void addEventToContainerList(TTimerEvent& rEvent, Int iCurrentTimeStamp);
    void removeEventFromContainerList(Int iHandle);

  private:
    static TAutoPtr<TTimerManager> m_ptrInstance;

    TAutoPtr<ITimerManager> m_ptrDelegation;

    TThread* m_pProcessThread;

    TEvent& m_rSignalisationEvent;

    TCriticalSection& m_rLock;

    Int m_iTimerResolution;

    TSingleLinkedList<TTimerEventGroupContainer*> m_lstFireTimeSortedEventGroups;

    TSingleLinkedList<TTimerEvent*> m_lstRegisteredEvents;

    TTimerEventHandleCreator& m_rHandleCreator;
};

/*****************************************************************************/
/*****************************************************************************/
inline TTimerManager& TTimerManager::getInstance()
{
  return *m_ptrInstance;
}

END_NAMESPACE_Zeus
//---------------------------------------------------------------------------
#endif