kerneltest/e32test/lffs/bf_raw.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 07 Jan 2010 13:38:45 +0200
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permissions -rw-r--r--
Revision: 201001 Kit: 201001
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// Copyright (c) 1996-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// Performs some benchmarking of the LFFS media driver
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// 
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//
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/**
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 @file bf_raw.cpp
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*/
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#include <e32std.h>
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#include <e32std_private.h>
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#include <e32base.h>
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#include <e32base_private.h>
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#include <e32test.h>
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#include <e32svr.h>
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#include "bf_raw.h"
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#include "user_config.h"
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const TInt KAverageOverInSeconds=10;	///< Number of seconds to run tests for
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//TInt64 Count;				///< Global variable used to count number of operations completed
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TUint32 Count;
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RTest test(_L("BF_RAW"));
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TTestInfo	TestInfo;		///< Data passed to exector thread
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TBusLocalDrive	drive;
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TLocalDriveCapsV2Buf driveInfo;
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GLDEF_D	HBufC8*	writeBuffer;	///< Buffer for transferring data
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GLDEF_D	HBufC8*	readBuffer;		///< Buffer for transferring data
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GLDEF_D TBool StopTest;		///< set to ETrue to stop the test
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GLREF_C TInt BmWrite(TAny*);
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GLREF_C TInt BmWriteThread(TAny*);
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GLREF_C TInt BmRead(TAny*);
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GLREF_C TInt BmReadThread(TAny*);
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GLDEF_D TInt	mainThreadHandle;
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TUint32 runTest(TThreadFunction aFunction)
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    /**
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	 * Function which actually runs the test.
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	 *
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	 * It creates a new thread to exeute the operations and then waits
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	 * for a pre-determined time. The executor thread increments a counter
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	 * each time it completes one operation. After the time period expires
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	 * the counter is averaged to get an "operations per second". This is
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	 * then multiplied by the data size to obtain tranfer rate
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	 */
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	{
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    RThread thread;
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	TInt r=thread.Create(_L("TESTER"),aFunction,KDefaultStackSize,&User::Heap(),NULL);
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	if(r!=KErrNone)
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		{
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		test.Printf(_L("Failed to create thread with error %d\n"),r);
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		return(r);
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		}
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	StopTest = EFalse;	// allow the test to run
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    TRequestStatus deadStat;
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	thread.Logon( deadStat );
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	RThread().SetPriority( EPriorityMuchMore );
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	thread.Resume();
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    User::After(1000000);
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    Count=0;
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    User::After(KAverageOverInSeconds*1000000);
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    TUint32 result=Count;
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	// tell test to stop and wait for thread to exit.
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	StopTest = ETrue;
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	User::WaitForRequest( deadStat );
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	CLOSE_AND_WAIT(thread);
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    return(result);
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    }
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void PrintResult( TUint32 aCount, const TDesC& aTitle )
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	/**
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	 * Prints result of test
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	 */
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	{
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	TInt64 count(static_cast<TUint>(aCount));
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	TInt64 transferRate = (count * TestInfo.iLength) / KAverageOverInSeconds;
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    test.Printf(_L("%S: %d bytes/second\n"),
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					&aTitle,
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					I64LOW(transferRate) );
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	}
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LOCAL_C TInt EraseSegment( TInt aSegmentNumber )
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	/**
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	 * Erases a segment on Flash
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	 *
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	 * @param aSegmentNumber index of segment to erase
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	 * @return KErrNone or error code
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	 */
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	{
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	TInt offset = aSegmentNumber * driveInfo().iEraseBlockSize;
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	TInt r = drive.Format( offset, driveInfo().iEraseBlockSize );
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	return  r;
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	}
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   123
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   124
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/**
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 * Structure defining tests
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 */
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class TTestData
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	{
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	public:
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		TThreadFunction		iFunction;	///< function to execute, NULL for end of list
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		TInt				iLength;	///< data length
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		TInt				iOffset;	///< Flash offset
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		const TDesC*				iDescription;	///< descriptive text
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	};
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   137
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_LIT( KErasingSegment0, "Erasing segment 0" );
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_LIT( KWrite1Start, "Write, 1 byte, 32-byte boundary, current thread" );
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_LIT( KWrite24Start, "Write, 24 bytes, 32-byte boundary, current thread" );
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_LIT( KWrite64Start, "Write, 64 bytes, 32-byte boundary, current thread" );
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_LIT( KWrite512Start, "Write, 512 bytes, 32-byte boundary, current thread" );
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_LIT( KRead1Start, "Read, 1 byte, 32-byte boundary, current thread" );
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_LIT( KRead24Start, "Read, 24 bytes, 32-byte boundary, current thread" );
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_LIT( KRead64Start, "Read, 64 bytes, 32-byte boundary, current thread" );
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_LIT( KRead512Start, "Read, 512 bytes, 32-byte boundary, current thread" );
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const TThreadFunction KEraseSegment = (TThreadFunction)0x000000F1;
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const TTestData testData[] =		///< the test data
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	{
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		{ KEraseSegment, 0, 0, &KErasingSegment0 },
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		{ BmWrite, 1, 0, &KWrite1Start },
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		{ BmWrite, 24, 32, &KWrite24Start },
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		{ BmWrite, 64, 64, &KWrite64Start },
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		{ BmWrite, 512, 128, &KWrite512Start },
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		{ BmRead, 1, 0, &KRead1Start },
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		{ BmRead, 24, 0, &KRead24Start },
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		{ BmRead, 64, 0, &KRead64Start },
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		{ BmRead, 512, 0, &KRead512Start },
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		{ NULL, 0, 0, NULL }
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	};
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void Initialize()
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	/**
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	 * Open channel to media driver
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	 */
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	{
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	//
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	// Load the media driver
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	//
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#ifndef SKIP_PDD_LOAD
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	test.Printf( _L("Loading %S\n"), &KLfsDriverName );
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	TInt r = User::LoadPhysicalDevice( KLfsDriverName );
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	test( KErrNone == r || KErrAlreadyExists == r );
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#endif
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#ifdef UNMOUNT_DRIVE
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	RFs fs;
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	test( KErrNone == fs.Connect() );
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#if 0
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	// XXX - not EKA2
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	test( KErrNone == fs.SetDefaultPath( _L("Z:\\") ) );
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#endif
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	TFullName name;
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	fs.FileSystemName( name, KLffsLogicalDriveNumber );
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	if( name.Length() > 0 )
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		{
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		test.Printf( _L("Unmounting drive") );
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		test( KErrNone == fs.DismountFileSystem( _L("Lffs"), KLffsLogicalDriveNumber) );
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		User::After( 2000000 );
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		test.Printf( _L("Drive unmounted") );
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		}
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	fs.Close();
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#endif
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   203
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	//
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	// Open a TBusLogicalDevice to it
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	//
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	test.Printf( _L("Opening media channel\n") );
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	TBool changedFlag = EFalse;
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	test( KErrNone == drive.Connect( KDriveNumber, changedFlag ) );
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   210
	
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	//
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	// Get size of Flash drive, block size, block count
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	//
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    drive.Caps(driveInfo);
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   215
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	//
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	// Create data buffer
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	//
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	writeBuffer = HBufC8::New( 1024 );
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	test( NULL != writeBuffer );
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	writeBuffer->Des().FillZ(1024);
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	readBuffer = HBufC8::New( 1024 );
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	test( NULL != readBuffer );
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	readBuffer->Des().FillZ(1024);
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	mainThreadHandle = RThread().Handle();
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	}
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TInt E32Main()
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    {
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    test.Title();
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    test.Start(_L("Benchmarks for media driver"));
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	Initialize();
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	const TTestData* pTest = &testData[0];
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	while( pTest->iFunction )
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		{
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		if( KEraseSegment == pTest->iFunction )
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			{
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			test.Printf( *pTest->iDescription );
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			TInt r = EraseSegment( pTest->iOffset );
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			test( KErrNone == r );
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			test.Printf( _L("Segment erased") );
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			}
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		else
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			{
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			TestInfo.iLength = pTest->iLength;
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			TestInfo.iOffset = pTest->iOffset;
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			PrintResult( runTest( pTest->iFunction ), *pTest->iDescription );
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			}
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		++pTest;
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		}
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	drive.Disconnect();
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    test.End();
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	return(KErrNone);
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    }
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