examples/ForumNokia/ThreadExample/inc/threadengine.h

/*
* ============================================================================
*  Name     : CThreadEngine from CThreadEngine.h
*  Part of  : Thread
*  Created  : 04.02.2005 by Forum Nokia
*  Description:
*     Declares thread handling operations. Intended as an example of thread
      usage and synchronization between several threads.
*  Version  : 1.0
*  Copyright: Nokia Corporation
* ============================================================================
*/

#ifndef CTHREADENGINE_H
#define CTHREADENGINE_H

// INCLUDES
#include "e32base.h" //CTimer
#include "Threadappview.h"

// CLASS DECLARATION

class CThreadEngine : public CTimer
    {

public: 

    static CThreadEngine* NewL(CThreadAppView* aView);

    static CThreadEngine* NewLC(CThreadAppView* aView);

    ~CThreadEngine(void);

    void DoCancel();

    void RunL();

    TInt RunError(TInt aError);

    void StartL();

    void CreateThreadsL();

    static TInt ExecuteThreadOne(TAny *aPtr);

    static TInt ExecuteThreadTwo(TAny *aPtr);

    static TInt ExecuteThreadThree(TAny *aPtr);

    void KillThread(TInt aThreadCount);

    void SetSyncValue(TInt aValue);

    TInt GetSyncValue() const;

public: //data members
    // Needed for synchronization
    RMutex iMutex;

private: // Basic two-phase EPOC constructors

        void ConstructL(CThreadAppView* aView);

    CThreadEngine(void);
        
        
private: // in-class methods

    void ThreadKilledText(const TDesC& aText, TInt aCount);

private: // data members       
    // for printing 
    CThreadAppView* iView;
        
    // handles for threads, no need to use Open if all threads have handle connected to them.
    RThread iThreadOne;
    RThread iThreadTwo;
    RThread iThreadThree;

    // threadOne uses this to demonstrate usage of an attribute
    TInt iNotSynchonizedCounter;

    // threadOne and Two use the same variable. Synchronization is required. 
    TInt iSynchronizedCounter;

    // Threads cannot be killed before they are created. True if they have been created, 
    // false otherwise.
    TBool iCreatedThreads;
    };

#endif // CTHREADENGINE

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