// Copyright (c) 1996-2009 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:

// e32test\bench\t_membm.cpp

// 

//

#include <e32std.h>

#include <e32std_private.h>

#include <e32base.h>

#include <e32base_private.h>

#include <e32test.h>

#include <e32svr.h>

#define ALIGN_UP(x, y) (TInt8*)(_ALIGN_UP((TInt)(x), (y)))

#define ALIGN_DOWN(x, y) (TInt8*)(_ALIGN_DOWN((TInt)(x), (y)))

const TInt KHeapSize=720*1024;

const TInt KAverageOverInMilliseconds=500;

const TInt Len64K = 64*1024;

volatile TInt count;

volatile TInt iters;

TInt8* trg;

TInt8* src;

TInt8* dummy;

TInt8 trgoffset;

TInt8 srcoffset;

TInt len=64*1024;

TInt64 result;

RTest test(_L("T_MEMBM"));

GLREF_C TInt MemBaseline(TAny*);

GLREF_C TInt MemCopy(TAny*);

GLREF_C TInt MemMove(TAny*);

GLREF_C TInt MemFill(TAny*);

GLREF_C TInt MemSwap(TAny*);

GLREF_C TInt WordMove(TAny*);

GLREF_C TInt MemCopyUncached(TAny*);

GLREF_C TInt WordMoveUncached(TAny*);

GLREF_C TInt MemFillUncached(TAny*);

GLREF_C TInt PurgeCache();

TInt nextLen(TInt aTestLength)

	{

	if (len == Len64K)

		return 0;

	if (!aTestLength)

		return Len64K;

	TInt inc = aTestLength;

	for (TInt i = len >> 5 ; i ; i >>= 1)

		inc <<= 1;

	return len + inc;

	}

/**

 * Run benchmarks on the supplied function.

 *

 * @param aFunction			The function to benchmark

 * @param aTestBackwards	Run copy tests with overlapping areas to test backwards copy

 * @param aTestSrcAlign		Run tests for source alignments 0 - 31

 * @param aTestDestAlign	Run tests for destination alignments 0 - 31

 * @param aTestLength		If non-zero, run tests for different lengths starting at aTestLength

 */

TInt64 runTest(TThreadFunction aFunction,const TDesC& aTitle, TBool aTestBackwards, TBool aTestSrcAlign, TBool aTestDestAlign, TInt aTestLength)

    {

	TInt8* buffer = (TInt8*)User::Alloc(640 * 1024 + 32);

	test(buffer != 0);

	test(!(aTestLength && aTestBackwards)); // not supported

	TBool goingforward=ETrue;

	FOREVER

		{

		if (aTestLength)

			test.Printf(_L("Running length experiment on %S.  Results follow:\n"), &aTitle);

		len = 0;

		while(len = nextLen(aTestLength), len)

			{

			src = ALIGN_UP(buffer, 32);

			if (goingforward)

				trg = src + 512 * 1024;					// blow half a meg

			else

				trg = ALIGN_DOWN(src + len - 1, 32);	// ensure overlapping, doesn't work for length < 32

			if (aTestLength)

				test.Printf(_L("%d, "), len);

			else

				test.Printf(_L("Test array bases trg=0x%08x, src=0x%08x.  Running experiment on %S.  Results follow:\n"), trg, src, &aTitle);

			const TInt xsquare = aTestDestAlign ? 32 : 1;

			const TInt ysquare = aTestSrcAlign ? 32 : 1;

			for (srcoffset = 0 ; srcoffset < ysquare ; srcoffset++)

				{

				for (trgoffset = 0 ; trgoffset < xsquare ; trgoffset++)

					{

					RThread thread;

					TInt r=thread.Create(aTitle,aFunction,KDefaultStackSize,KHeapSize,KHeapSize,NULL);

					if(r!=KErrNone)

						{

						test.Printf(_L("Failed to create thread with error %d\n"),r);

						return(r);

						}

					thread.SetPriority(EPriorityLess);

					thread.Resume();

					User::After(50000);  // 50 msec is more than enough in EKA2

					count=0;

					User::After(5000);   // even if the second reset fails, max inaccuracy is 5000 usecs

					count=0;			 // try and reduce the probability of failing to reset

					User::After(KAverageOverInMilliseconds*1000);

					result=count;

					thread.Kill(0);

					CLOSE_AND_WAIT(thread);

					PurgeCache();

					result *= 1000;

					result /= KAverageOverInMilliseconds;

					TInt s = I64INT(result);

					test.Printf(_L("%d, "),s);

					}

				test.Printf(_L("\n"));

				}

			}

		if (aTestBackwards && goingforward)

			goingforward = EFalse;

		else

			break;

		}

	User::Free(buffer);

	return(result);

    }

enum TTestType

	{

	ENormalTests,

	EFullTests,

	ELengthTests,

	};

// Return whether we should run the full alignment benchmarks

TTestType ParseCommandLine()

	{

	TBuf<32> args;

	User::CommandLine(args);

	if (args == _L("-f"))

		return EFullTests;

	else if (args == _L("-l"))

		return ELengthTests;

	else if (args != KNullDesC)

		{

		test.Printf(_L("usage: t_membm [OPTIONS]\n"));

		test.Printf(_L("  -f  Run full alignment benchmarks\n"));

		test.Printf(_L("  -l  Run memcpy length benchmarks\n"));

		test(EFalse);

		}

	return ENormalTests;

	}

TInt E32Main()

//

// Benchmark for Mem functions

//

    {

    test.Title();

    test.Start(_L("Benchmarks for Mem functions"));

	TTestType testType = ParseCommandLine();

	switch (testType)

		{

		case ENormalTests:

		case EFullTests:

			{

			TBool srcAlign = testType == EFullTests;

			if (srcAlign)

				test.Printf(_L("Running full alignment benchmarks (may take a long time)\n"));

			else

				test.Printf(_L("Not testing source alignment (run with -f if you want this)\n"));

			runTest(MemBaseline,     _L("Processor baseline"),   EFalse, EFalse,   EFalse, 0);

			runTest(MemFill,	     _L("Memory fill"),		     EFalse, EFalse,   ETrue,  0);

			runTest(MemCopy,	     _L("Memory copy"),		     ETrue,  srcAlign, ETrue,  0);

			runTest(MemSwap,	     _L("Memory swap"),		     ETrue,  srcAlign, ETrue,  0);

			}

			break;

		case ELengthTests:

			test.Printf(_L("Running length benchmarks (may take a long time)\n"));

			runTest(MemFill,         _L("Fill length cached"),        EFalse,  EFalse,  EFalse, 1);

			runTest(MemFillUncached, _L("Fill length uncached"),      EFalse,  EFalse,  EFalse, 1);

			runTest(MemCopy,         _L("Copy length cached"),        EFalse,  EFalse,  EFalse, 1);

			runTest(MemCopyUncached, _L("Copy length uncached"),      EFalse,  EFalse,  EFalse, 1);

			runTest(WordMove,        _L("Word move length cached"),   EFalse,  EFalse,  EFalse, 4);

			runTest(WordMoveUncached,_L("Word move length uncached"), EFalse,  EFalse,  EFalse, 4);

			break;

		default:

			test(EFalse);

			break;

		}

    test.End();

	return(KErrNone);

    }