1 /*

     2 * Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies). 

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 *    This is the definition for CDosharedDataBase class.

    16 *

    17 */

    18 

    19 

    20 

    21 #ifndef __DOSSHAREDDATABASE_H__

    22 #define __DOSSHAREDDATABASE_H__

    23 

    24 // INCLUDES

    25 #include "dosservice.h"

    26 //#include <e32base.h>

    27 #include <s32file.h>

    28 

    29 

    30 // CONSTANTS

    31 //const TInt KSDReserveFileMaxSize = 64*1024;

    32 

    33 

    34 // FORWARD DECLARATIONS

    35 class CSharedDataFileSystemNotifier;

    36 

    37 /**

    38 * Server side object for RDosAudio class in the client side and the plug-in

    39 * side Audio service derives from this,

    40 */

    41 class CDosSharedDataBase : public CDosService

    42 {

    43 public:

    44 

    45 	IMPORT_C static CDosSharedDataBase* NewL(CSharedDataFileSystemNotifier* fileSystemNotifier);

    46 	IMPORT_C static CDosSharedDataBase* NewLC(CSharedDataFileSystemNotifier* fileSystemNotifier);

    47 	

    48 	virtual ~CDosSharedDataBase();

    49 

    50 private:

    51 	/**

    52 	* Processes the message sent by the client.

    53 	* @param aMessage Client-server message.

    54 	* @return Symbian error code.

    55 	*/

    56 

    57 	IMPORT_C TInt ExecuteMessageL(const RMessage2& aMessage);

    58 

    59     void ConstructL(CSharedDataFileSystemNotifier* fileSystemNotifier);

    60 

    61 protected:

    62 

    63 	/**

    64 	* Provide default implementation for plug-in methods incase plug-in

    65 	* module doesn't provide the actual implementation.

    66 	*/

    67 

    68     void RequestFreeDiskSpace( TInt* aRequest );

    69 

    70     void RequestFreeDiskSpaceCancel( TInt* aRequest );

    71         

    72     /**

    73     * Adjusts the size of the reserve file as close to the maximum size

    74     * as possible so that the current minimum free disk space

    75     * request is still fulfilled.

    76     *

    77     * @param aRequiredFreeDiskSpace current minimum requirement for the

    78     *                               amount of free disk space

    79     */

    80     void SetReserveFileSize( const TInt aRequiredFreeDiskSpace );

    81     

    82     

    83 

    84 

    85 private:

    86     // free disk space notifier

    87     //CSharedDataFileSystemNotifier* iFileSystemNotifier;

    88 

    89     // highest outstanding free disk space request

    90     //TInt* iCurrentFreeDiskSpaceRequest;

    91         

    92     //TInt iFreeDiskSpaceRequest;

    93     const RMessage2* iMessage;  // Kernel owns

    94     CSharedDataFileSystemNotifier* iFileSystemNotifier;

    95     RFs iFs;

    96     TInt iFreeDiskSpaceRequest;

    97 

    98 //	inline CSharedDataServer* Server();

    99 

   100     // friend classes

   101     friend class CSharedDataFileSystemNotifier;

   102 };

   103 

   104 #endif //__DOSSHAREDDATABASE_H__