sl@0: // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: #include "LOGCOMP.H"
sl@0: #include "logservpanic.h"
sl@0: #include "LogServDatabaseTransactionInterface.h"
sl@0: 
sl@0: // Constants
sl@0: const TInt KLogMaxWastedSpacePercentage = 25;
sl@0: const TInt KLogMaxWastedSpace = 128 * 1024;
sl@0: const TInt KLogMinWastedSpace = 32 * 1024;
sl@0: 
sl@0: 
sl@0: CLogCompact::CLogCompact(MLogServDatabaseTransactionInterface& aDatabase, TInt aPriority)
sl@0: : CLogActive(aPriority), iDatabase(aDatabase)
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: void CLogCompact::Start(TRequestStatus& aStatus)
sl@0: 	{
sl@0: 	__ASSERT_DEBUG(!IsActive(), Panic(ELogAlreadyActive5));
sl@0: 	
sl@0: 	TInt error = iOperation.UpdateStats(iDatabase.DTIDatabase(), iStep());
sl@0: 	iCompact = EFalse;
sl@0: 
sl@0: 	Queue(aStatus);
sl@0: 	TRequestStatus* st = &iStatus;
sl@0: 	User::RequestComplete(st, error);
sl@0: 	SetActive();
sl@0: 	}
sl@0: 
sl@0: void CLogCompact::DoRunL()
sl@0: 	{
sl@0: 	if (iStep() > 0)
sl@0: 		{
sl@0: 		iOperation.Next(iStep, iStatus);
sl@0: 		SetActive();
sl@0: 		}
sl@0: 	else if (!iCompact && CompactRequired())
sl@0: 		{
sl@0: 		iOperation.Close();
sl@0: 
sl@0: 		iCompact = ETrue;
sl@0: 		User::LeaveIfError(iOperation.Compact(iDatabase.DTIDatabase(), iStep()));
sl@0: 
sl@0: 		if (iStep() > 0)
sl@0: 			{
sl@0: 			TRequestStatus* st = &iStatus;
sl@0: 			User::RequestComplete(st, KErrNone);
sl@0: 
sl@0: 			SetActive();
sl@0: 			}
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: TBool CLogCompact::CompactRequired() const
sl@0: 	{
sl@0: 	RDbDatabase::TSize size = iDatabase.DTIDatabase().Size();
sl@0: 	if (size.iUsage < 0)
sl@0: 		return EFalse;
sl@0: 
sl@0: 	const TInt wastedSpace = (size.iSize * (100 - size.iUsage)) / 100;
sl@0: 	return (wastedSpace > KLogMinWastedSpace && (100 - size.iUsage) > KLogMaxWastedSpacePercentage) || wastedSpace > KLogMaxWastedSpace;
sl@0: 	}
sl@0: 
sl@0: void CLogCompact::DoComplete(TInt&)
sl@0: 	{
sl@0: 	iOperation.Close();
sl@0: 	}