// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

#ifndef __SYSMONMONITOR_H__

#define __SYSMONMONITOR_H__

#include <e32std.h>

#include <e32base.h>

#include <startup.hrh>

#include "logoncallback.h"

#include "logonbackofftimer.h"

class CSysMonServer;

class CStartupProperties;

class CLogonBackoffTimer;

class CMonitor;

/**

Utility class used for decrementing the re-launch attempts after interval defined by 

KIntervalForReLaunchRateOfFailure

*/	

NONSHARABLE_CLASS(CRelaunchIntervalTimer) : public CTimer

	{

public:

	static CRelaunchIntervalTimer* NewL(CMonitor& aMonitor);

	void Start();

	~CRelaunchIntervalTimer();

private:

	CRelaunchIntervalTimer(CMonitor& aMonitor);

	void ConstructL();

private: // from CActive

	void RunL();

private:

	CMonitor* iMonitor;

	};

/** 

This class is responsible for monitoring a single process.

@file

@internalComponent

@released

*/

class CMonitor:public CActive, public MLogonCallback

	{

public:

	static CMonitor* NewL(CSysMonServer& aServer, const TProcessId& aId, CStartupProperties* aStartupProperties, TBool aExecuteRecoveryMethodOnFailure);

	void Start();

	TProcessId ProcessId() const;

	~CMonitor();

	void DecrementRelaunchAttempts();

public:

	// From MLogonCallback

	TInt DoProcessLogon();

	void ActivateSelf();

protected:

	static TInt Callback(TAny* aParent);

	void RestartProcessL();

	void RunL();

	void DoCancel();

	TInt RunError(TInt aError);

	void CancelMonitor();

protected:

	CMonitor(CSysMonServer& aServer, const TProcessId& aId);	

	void ConstructL(CStartupProperties* aStartupProperties, TBool aExecuteRecoveryMethodOnFailure);

public : 

    static const TInt iOffset;

private:

	void FailureRecoveryPolicy();

	TBool HasExceededRateOfFailurePolicy();

#ifdef	SYMBIAN_SSM_GRACEFUL_SHUTDOWN

	void RestartSysDll(TBool aUseStartupMode, TInt aStartupMode = 0);

#endif	//SYMBIAN_SSM_GRACEFUL_SHUTDOWN

private:

	CSysMonServer& iSysMonServer;		

	TProcessId iProcessId;	

	RProcess iProcess;

	TTime iLoadTime;

	CStartupProperties* iStartupProperties;	

	TSglQueLink iSglQueLink;

	CLogonBackoffTimer* iLogonBackoffTimer;

	TInt iReLaunchAttempts;	// Persistant count of the number of re-launch attempts.

	CRelaunchIntervalTimer* iReLaunchIntervalTimer;	// Timer used for decrementing the re-launch attempts after interval defined by KIntervalForReLaunchRateOfFailure

#ifdef	SYMBIAN_SSM_GRACEFUL_SHUTDOWN

	RLibrary iRestartSysLib;

	TBool iRestartSysLoaded;

#endif	//SYMBIAN_SSM_GRACEFUL_SHUTDOWN

	};

#endif