1 // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #include "LOGCOMP.H"

    17 #include "logservpanic.h"

    18 #include "LogServDatabaseTransactionInterface.h"

    19 

    20 // Constants

    21 const TInt KLogMaxWastedSpacePercentage = 25;

    22 const TInt KLogMaxWastedSpace = 128 * 1024;

    23 const TInt KLogMinWastedSpace = 32 * 1024;

    24 

    25 

    26 CLogCompact::CLogCompact(MLogServDatabaseTransactionInterface& aDatabase, TInt aPriority)

    27 : CLogActive(aPriority), iDatabase(aDatabase)

    28 	{

    29 	}

    30 

    31 void CLogCompact::Start(TRequestStatus& aStatus)

    32 	{

    33 	__ASSERT_DEBUG(!IsActive(), Panic(ELogAlreadyActive5));

    34 	

    35 	TInt error = iOperation.UpdateStats(iDatabase.DTIDatabase(), iStep());

    36 	iCompact = EFalse;

    37 

    38 	Queue(aStatus);

    39 	TRequestStatus* st = &iStatus;

    40 	User::RequestComplete(st, error);

    41 	SetActive();

    42 	}

    43 

    44 void CLogCompact::DoRunL()

    45 	{

    46 	if (iStep() > 0)

    47 		{

    48 		iOperation.Next(iStep, iStatus);

    49 		SetActive();

    50 		}

    51 	else if (!iCompact && CompactRequired())

    52 		{

    53 		iOperation.Close();

    54 

    55 		iCompact = ETrue;

    56 		User::LeaveIfError(iOperation.Compact(iDatabase.DTIDatabase(), iStep()));

    57 

    58 		if (iStep() > 0)

    59 			{

    60 			TRequestStatus* st = &iStatus;

    61 			User::RequestComplete(st, KErrNone);

    62 

    63 			SetActive();

    64 			}

    65 		}

    66 	}

    67 

    68 TBool CLogCompact::CompactRequired() const

    69 	{

    70 	RDbDatabase::TSize size = iDatabase.DTIDatabase().Size();

    71 	if (size.iUsage < 0)

    72 		return EFalse;

    73 

    74 	const TInt wastedSpace = (size.iSize * (100 - size.iUsage)) / 100;

    75 	return (wastedSpace > KLogMinWastedSpace && (100 - size.iUsage) > KLogMaxWastedSpacePercentage) || wastedSpace > KLogMaxWastedSpace;

    76 	}

    77 

    78 void CLogCompact::DoComplete(TInt&)

    79 	{

    80 	iOperation.Close();

    81 	}