// Copyright (c) 2006-2009 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/defrag/perf/t_perf.cpp

// t_pagemove loads and opens the logical device driver ("D_PAGEMOVE.LDD"). 

// Following this, it requests that the driver attempt to move various kinds of pages

// directly amd notes time taken for each of the moves.

// Platforms/Drives/Compatibility:

// Hardware only. No defrag support on emulator. 

// 2  -  Test the performance of moving user chunk pages

// 3  -  Test the performance of moving dll pages

// 4  -  Test the performance of moving kernel stack pages

// 

//

//! @SYMTestCaseID			KBASE-T_DEFRAGPERF-0601

//! @SYMTestType			CT

//! @SYMPREQ				PREQ308

//! @SYMTestCaseDesc		Testing performace of page moving

//! @SYMTestActions			1  -  Test the performance of moving code chunk pages

//! @SYMTestExpectedResults Finishes if the system behaves as expected, panics otherwise

//! @SYMTestPriority        High

//! @SYMTestStatus          Implemented

//--------------------------------------------------------------------------------------------------

#define __E32TEST_EXTENSION__

#include <e32test.h>

#include <e32std.h>

#include <e32std_private.h>

#include "..\d_pagemove.h"

#include "..\..\mmu\mmudetect.h"

#include "t_perf.h"

LOCAL_D RTest test(_L("T_DEFRAGPERF"));

const TPtrC KLddFileName=_L("D_PAGEMOVE.LDD");

const TUint KRepetitions=50;

const TUint KPageMoves = 2000;	// default to moving a page 2000 times

TInt gPageSize;

#define DEFRAG_CHUNK_MAX (4 * 1024 * 1024)

#define DEFRAG_CHUNK_MIN (1 * 1024 * 1024)

#define MIN_PROCS 10

#define MAX_PROCS 50

#define PROC_INCREMENTS 10

_LIT(BaseFileName,   "t_defragtestperf");

_LIT(BaseFileNameExt, ".exe");

LOCAL_C void TestUserDataMove(RPageMove& pagemove)

{

	RChunk chunk;

	TInt size; 

	TInt r = KErrGeneral;

	DefragLatency timer;

	timer.CalibrateTimer(test);

	size = DEFRAG_CHUNK_MAX; 

	while (size > DEFRAG_CHUNK_MIN) 

		{

		/* Create a local chunk */

		r = chunk.CreateLocal(size,size);

		if (r == KErrNone)

			{

			TEST_PRINTF(_L("Created %dMB chunk\n"), size/(1024 * 1024));

			break;

			}

		size = size / 2;

		}

	test(r == KErrNone);

	/* Initialise the Chunk */

	TUint8* base = (TUint8 *)chunk.Base();	

	for (TUint i = 0; i < size/sizeof(*base); i++) 

		{

		base[i] = i;

		}

	TEST_PRINTF(_L("Starting to move chunk pages (%x %d) ...\n"), chunk.Base(), size);

	TUint j = 0;

	for (; j < KRepetitions; j++) 

		{

		TInt size2 = size;

		base = (TUint8 *)chunk.Base();	

		timer.StartTimer();

		while (size2)

			{

			test_KErrNone(pagemove.TryMovingUserPage(base));

			base += gPageSize;

			size2 -= gPageSize;

			}

		test(timer.StopTimer(test) > 0);

		}

	DTime_t average, max, min, delay;

	TEST_PRINTF(_L("Finished moving chunk pages\n"));

	average = timer.GetResult(max, min, delay);

	test.Printf(_L("Fast counter ticks to move %d chunk pages: Av %d Min %d Max %d (Overhead %d)\n"), size/gPageSize, average, min, max, delay);

	test.Printf(_L("Average of %d ticks to move one page\n\n"), average / (size/gPageSize));

	base = (TUint8 *)chunk.Base();	

	for (TUint i = 0; i < size/sizeof(*base); i++) 

		{

		test_Equal((TUint8)i, base[i]);

		}

}

TInt CreateProc(RProcess& aProcess, TInt aIndex)

	{

	TFileName filename; 

	TRequestStatus status;

	TBuf<64> command;

	filename.Format(_L("%S%S"), &BaseFileName, &BaseFileNameExt);		

	TInt r=aProcess.Create(filename, command);

	if (r!=KErrNone)

		{

		test.Printf(_L("Process %d could not be loaded!\n"), aIndex);

		return r;

		}

	aProcess.Rendezvous(status);

	aProcess.Resume();

	User::WaitForRequest(status);

	return KErrNone; 

	}

void KillAllProcs(RProcess *aProcess, TInt aNum, TInt aError)

	{

	TInt i;

	for (i = 0; i < aNum; i++) 

		{

		aProcess[i].Kill(aError);

		}

	}

TInt TestDLL(int aNumProcess, RPageMove& aPageMove)

	{

	RProcess *process;

	TInt retVal;

	process = new RProcess[aNumProcess];

	if (process == NULL)

		return KErrGeneral;

	TEST_PRINTF(_L("Starting %d processes\n"), aNumProcess);

	for (TInt i = 0; i < aNumProcess; i++) 

		{

		retVal = CreateProc(process[i], i);

		if (retVal != KErrNone)

			{

			// More Cleanup ? 

			KillAllProcs(process, i, KErrNone);

			delete[] process;

			return retVal;

			}

		}

	/* Now Map the DLL to this process and Run the tests */

	DllDefrag dll;

	TEST_PRINTF(_L("Main Proc Loading The DLL ... \n"));

	retVal = dll.LoadTheLib(0, test);

	if (retVal != KErrNone)

		{

		KillAllProcs(process, aNumProcess, retVal);

		test.Printf(_L("Error (%d) Loading The DLLs!\n"), retVal);

		delete[] process;

		return KErrGeneral;

		}

	retVal = dll.TestDLLPerformance(0, aPageMove, test);

	KillAllProcs(process, aNumProcess, KErrNone);

	delete[] process;

	return retVal;

	}

/*  

 * Is this portable .. Hell No, so dont ask.

 */

#define isNum(a) ((a) >= '0' && (a) <= '9')

TInt atoi(const TBuf<64>& buf, TInt pos)

	{

	TInt i = pos;

	TInt num = 0;

	TInt len = User::CommandLineLength();

	while(i < len)

	{

		TInt8 ch = buf[i++];

		if (!isNum(ch)) 

			{

			test.Printf(_L("Invalid Argument!\n"));

			return KErrGeneral;

			}

		num = (num * 10) + (ch - '0');

	}

	return num;

	}

void TestCodeChunkMoving(RPageMove aPageMove)

	{

	_LIT(ELOCL_DEFAULT, "");

	_LIT(ELOCLUS, "T_LOCLUS_RAM");

	// Change locale and move the locale page repeatedly

	// On multiple memmodel this is the easiest way to move CodeChunk pages.

	// Setup the RAM loaded US Locale DLL

	test_KErrNone(UserSvr::ChangeLocale(ELOCLUS));

	TLocale locale;

	locale.Refresh();

	// Now get a pointer to some data in the DLL. This will be used to move a

	// page from the dll 

	SLocaleLanguage localeLanguage;

	TPckg<SLocaleLanguage> localeLanguageBuf(localeLanguage);

	TInt r = RProperty::Get(KUidSystemCategory, KLocaleLanguageKey, localeLanguageBuf);

	test_KErrNone(r);

	TAny* localeAddr = (TAny *) localeLanguage.iDateSuffixTable;

	test(localeAddr != NULL);

	// Now we have a RAM loaded locale page determine the performance

	TEST_PRINTF(_L("Start moving a RAM loaded locale page\n"));

	// Setup the timer

	DefragLatency timer;

	timer.CalibrateTimer(test);

	TUint reps = 0;

	for (; reps < KRepetitions; reps++)

		{

		timer.StartTimer();

		TUint i = 0;

		for (; i < KPageMoves; i++)

			{

			test_KErrNone(aPageMove.TryMovingLocaleDll(localeAddr));

			}

		test_Compare(timer.StopTimer(test), >, 0);

		}

	DTime_t max, min, delay;

	TUint average = timer.GetResult(max, min, delay);

	test.Printf(_L("Fast counter ticks to move code chunk page %d times: Av %d Min %d Max %d (Overhead %d)\n"), KPageMoves, average, min, max, delay);

	test.Printf(_L("Average of %d ticks to move one page\n\n"), average/ KPageMoves);

	// Reset the Locale to the default

	r=UserSvr::ChangeLocale(ELOCL_DEFAULT);	

	test(r==KErrNone);

	locale.Refresh();

	}

GLDEF_C TInt E32Main()

    {

	test.Title();	

	TInt procs = 1;

	_LIT(KStart,"-procs=");

	const TInt offset = KStart().Length();

	TBuf<64> cmd;

	User::CommandLine(cmd);

	if (!HaveMMU())

		{

		test.Printf(_L("This test requires an MMU\n"));

		return KErrNone;

		}

	test.Start(_L("Load test LDD"));

	TInt r=User::LoadLogicalDevice(KLddFileName);

	test(r==KErrNone || r==KErrAlreadyExists);

	r=UserHal::PageSizeInBytes(gPageSize);

	test_KErrNone(r);

	RPageMove pagemove;

	test.Next(_L("Open test LDD"));

	r=pagemove.Open();

	test_KErrNone(r);

	DefragLatency timer;

	timer.CalibrateTimer(test);

	test.Printf(_L("\nFast Counter Frequency = %dHz \n\n"), timer.iFastCounterFreq);

	test.Next(_L("Test performance of moving code chunk pages"));

	TestCodeChunkMoving(pagemove);

	/* 

	 * Test User Data.

	 * Create a large chunk ~ 4MB (> L2 Cache) and move pages from that chunk

	 */

	test.Next(_L("Test performance of moving user chunk pages"));

	TestUserDataMove(pagemove);

	/* Test DLL Move */

	test.Next(_L("Test performance of moving dll pages"));	

	TInt pos = cmd.FindF(KStart);

	if (pos >= 0) 

		{

		pos += offset;

		procs = atoi(cmd, pos);

		}

	if (procs < MIN_PROCS)

		procs = MIN_PROCS;

	else if (procs > MAX_PROCS)

		procs = MAX_PROCS;

	for (TInt i = 1; ; )

		{ 

		test.Printf(_L("Testing with %d Processes mapping a DLL\n"), i);

		TestDLL(i, pagemove);

		if (i >= procs)

			break;

		if (i + PROC_INCREMENTS >= procs)

			i = procs;

		else

			i += PROC_INCREMENTS;

		}

	if ((MemModelAttributes()&EMemModelTypeMask) != EMemModelTypeFlexible)

		{

		test.Next(_L("Test performance of moving kernel stack pages"));

		r = pagemove.TestKernelDataMovePerformance();

		test_KErrNone(r);

		}

	test.Next(_L("Close test LDD"));

	pagemove.Close();

	User::FreeLogicalDevice(KLddFileName);

	test.End();

	return(KErrNone);

    }