// sampler.h

// 

// Copyright (c) 2010 Accenture. All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the "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:

// Accenture - Initial contribution

//

#ifndef EXTRABTRACE_SAMPLER_H

#define EXTRABTRACE_SAMPLER_H

#include <fshell/extrabtracek.h>

#include <kernel.h>

NONSHARABLE_CLASS(DCpuSampler) : public DBase

	{

public:

	DCpuSampler();

	~DCpuSampler();

	void SetCpuUsageSampling(MExtraBtrace::TCpuUsageCallback aCallbackFn);

	void SetProfilingSampling(TBool aEnabled);

private:

	static void Sample(TAny* aPtr);

	void DoSample();

	void Usample(NThread* aThread);

	void SettingsChanged();

	TBool ShouldRun() const;

private:

	NThread* iContext;

	NTimer iTimer;

	TInt iTimerHeartbeat;

	TUint* iIntStackTop; // I don't understand this, but whover wrote it originally hopefully did!

	TBool iProfiling;

	MExtraBtrace::TCpuUsageCallback iCpuUsageCallbackFn;

	};

#endif