// 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);

     }