/*

* Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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: 

*

*/

#include "tmontgomeryperformance.h"

#include "t_input.h"

#include "t_output.h"

#include <bigint.h>

#include "../../source/bigint/mont.h"

_LIT(KPerfConstFormat, "\tConstruction Time\t%f");

_LIT(KPerfMultiplyFormat, "\tMultiply Time\t%f");

_LIT(KPerfSquareFormat, "\tSquare Time\t%f");

_LIT(KPerfExpFormat, "\tExponentiate Time\t%f");

_LIT(KPerfReduceFormat, "\tReduce Time\t%f");

CTestAction* CMontgomeryPerformance::NewL(RFs& aFs, CConsoleBase& aConsole, 

	Output& aOut, const TTestActionSpec& aTestActionSpec)

	{

	CTestAction* self = CMontgomeryPerformance::NewLC(aFs, aConsole,

		aOut, aTestActionSpec);

	CleanupStack::Pop();

	return self;

	}

CTestAction* CMontgomeryPerformance::NewLC(RFs& aFs, CConsoleBase& aConsole, 

	Output& aOut, const TTestActionSpec& aTestActionSpec)

	{

	CMontgomeryPerformance* self = new(ELeave) CMontgomeryPerformance(aFs, aConsole, aOut);

	CleanupStack::PushL(self);

	self->ConstructL(aTestActionSpec);

	return self;

	}

CMontgomeryPerformance::~CMontgomeryPerformance()

	{

	delete iBody;

	iA.Close();

	iB.Close();

	iModulus.Close();

	}

CMontgomeryPerformance::CMontgomeryPerformance(RFs& aFs, CConsoleBase& aConsole, 

	Output& aOut) : CTestAction(aConsole, aOut), iFs(aFs)

	{

	}

void CMontgomeryPerformance::ConstructL(const TTestActionSpec& aTestActionSpec)

	{

	CTestAction::ConstructL(aTestActionSpec);

	iBody = HBufC8::NewL(aTestActionSpec.iActionBody.Length());

	iBody->Des().Copy(aTestActionSpec.iActionBody);

	iIterations = Input::ParseIntElement(*iBody, _L8("<iterations>"), _L8("</iterations>"));

	TUint bits = Input::ParseIntElement(*iBody, _L8("<bits>"), _L8("</bits>"));

	do 

		{

		if(*((TUint*)&iModulus)) //if the size is zero, ie iModulus hasn't been initialised so don't clean it up

			{

			iModulus.Close();

			}

		iModulus = RInteger::NewRandomL(bits);

		}

	while(iModulus.IsEven());

	iA = RInteger::NewRandomL(TInteger::One(), iModulus);

	iB = RInteger::NewRandomL(TInteger::One(), iModulus);

	}

void CMontgomeryPerformance::DoPerformPrerequisite(TRequestStatus& aStatus)

	{

	TRequestStatus* status = &aStatus;

	User::RequestComplete(status, KErrNone);

	iActionState = CTestAction::EAction;

	}

void CMontgomeryPerformance::DoPerformPostrequisite(TRequestStatus& aStatus)

	{

	TRequestStatus* status = &aStatus;

	iFinished = ETrue;

	User::RequestComplete(status, KErrNone);

	}

void CMontgomeryPerformance::DoReportAction(void)

	{

	}

void CMontgomeryPerformance::DoCheckResult(TInt)

	{

	}

void CMontgomeryPerformance::PerformAction(TRequestStatus& aStatus)

	{

	TRequestStatus* status = &aStatus;

	iResult = ETrue;

	CMontgomeryStructure* montConst;

	TUint iterations = 0;

	TTime start, end;

	TTimeIntervalSeconds diff(0);

	const TTimeIntervalSeconds iterationTime(iIterations);

	start.UniversalTime();

	while (diff < iterationTime)

		{

		montConst = CMontgomeryStructure::NewL(iModulus);

		delete montConst;

		iterations++;

		end.UniversalTime();

		end.SecondsFrom(start, diff);

		}

	end.UniversalTime();

	TTimeIntervalMicroSeconds time = end.MicroSecondsFrom(start);

	TReal rate = I64REAL(time.Int64()) / (iterations);

	TReal rtime = I64REAL(time.Int64());

    HBufC* realbuf = HBufC::NewLC(128);

	TPtr buf = realbuf->Des();

	buf.Format(KPerfConstFormat, rate, iterations, rtime);

	iOut.writeString(buf);

	iConsole.Printf(_L("."));

	CMontgomeryStructure* mont = CMontgomeryStructure::NewLC(iModulus); 

//Multiply

	diff  = 0;

	iterations = 0;

	start.UniversalTime();

	while (diff < iterationTime)

		{

		mont->MultiplyL(iA, iB);

		iterations++;

		end.UniversalTime();

		end.SecondsFrom(start, diff);

		}

	end.UniversalTime();

	time = end.MicroSecondsFrom(start);

	rate = I64REAL(time.Int64()) / iterations;

    rtime = I64REAL(time.Int64());

	buf.Zero();

	buf.Format(KPerfMultiplyFormat, rate, iterations, rtime);

	iOut.writeString(buf);

	iConsole.Printf(_L("."));

//Square

	diff  = 0;

	iterations = 0;

	start.UniversalTime();

	while (diff < iterationTime)

		{

		mont->SquareL(iA);

		iterations++;

		end.UniversalTime();

		end.SecondsFrom(start, diff);

		}

	end.UniversalTime();

	time = end.MicroSecondsFrom(start);

	rate = I64REAL(time.Int64()) / iterations;

    rtime = I64REAL(time.Int64());

	buf.Zero();

	buf.Format(KPerfSquareFormat, rate, iterations, rtime);

	iOut.writeString(buf);

	iConsole.Printf(_L("."));

//Exponentiate

	diff  = 0;

	iterations = 0;

	start.UniversalTime();

	while (diff < iterationTime)

		{

		mont->ExponentiateL(iA, iB);

		iterations++;

		end.UniversalTime();

		end.SecondsFrom(start, diff);

		}

	end.UniversalTime();

	time = end.MicroSecondsFrom(start);

	rate = I64REAL(time.Int64()) / iterations;

    rtime = I64REAL(time.Int64());

	buf.Zero();

	buf.Format(KPerfExpFormat, rate, iterations, rtime);

	iOut.writeString(buf);

	iConsole.Printf(_L("."));

//Reduce

	RInteger top = iA.TimesL(iB);

	CleanupStack::PushL(top);

	diff  = 0;

	iterations = 0;

	start.UniversalTime();

	while (diff < iterationTime)

		{

		mont->ReduceL(top);

		iterations++;

		end.UniversalTime();

		end.SecondsFrom(start, diff);

		}

	end.UniversalTime();

	CleanupStack::PopAndDestroy(&top);

	time = end.MicroSecondsFrom(start);

	rate = I64REAL(time.Int64()) / iterations;

    rtime = I64REAL(time.Int64());

	buf.Zero();

	buf.Format(KPerfReduceFormat, rate, iterations, rtime);

	iOut.writeString(buf);

	iConsole.Printf(_L("."));

	CleanupStack::PopAndDestroy(mont);

	CleanupStack::PopAndDestroy(realbuf);

	User::RequestComplete(status, KErrNone);

	iActionState = CTestAction::EPostrequisite;

	}