1 // Copyright (c) 1995-2009 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 the License "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 // f32\sfile\sf_plugin.h

    15 // 

    16 //

    17 

    18 #if !defined(__SF_PLUGIN_H__)

    19 

    20 #define __SF_PLUGIN_H__

    21 

    22 #include "message.h"

    23 #include <f32fsys.h>

    24 #include <F32plugin.h>

    25 

    26 class CFsSyncMessageScheduler;

    27 class CFsInternalRequest;

    28 

    29 class TFsPluginThread

    30 	{

    31 public:

    32 	TFsPluginThread();

    33 public:

    34 	TInt iDriveNumber;

    35 	TBool iIsAvailable;

    36 	RMutex iPluginLock;

    37 	CPluginThread* iThread;

    38 	TUint iId;

    39 	};

    40 

    41 /**

    42  * Plugin Manager

    43  *

    44  *	- Initialised in main thread

    45  *

    46  *	- Contains array of request chains which represent the

    47  *	  plugins registered for each request type.

    48  *	

    49  *	- Plugins register their interest with each request type,

    50  *	  specifying the associated thread and pre/post processing options.

    51  */

    52 class FsPluginManager

    53 	{

    54 public:

    55 	static void InitialiseL();

    56 

    57 	static TInt MountPlugin(CFsPluginFactory& aPluginFactory, TInt aDrive, TInt aPos);

    58 	static void DismountPlugin(CFsPluginFactory& aPluginFactory, TInt aPos);

    59 

    60 	static TInt InstallPluginFactory(CFsPluginFactory* aFactory,RLibrary aLib);

    61 	static CFsPluginFactory* GetPluginFactory(const TDesC& aName);

    62 

    63 	static TInt NextPlugin(CFsPlugin*& aPlugin, CFsMessageRequest* aMsgRequest, TBool aLock, TBool aCheckCurrentOperation=ETrue);

    64 	static TInt PrevPlugin(CFsPlugin*& aPlugin, CFsMessageRequest* aMsgRequest, TBool aLock);

    65 	static TInt InsertInPluginStack(CFsPlugin*& aPlugin,TInt aPos);

    66 	static TInt IsInChain(TInt aUPos, TInt aPos,TInt aDrive, CFsPluginFactory* aPluginFactory);

    67 	static CFsPlugin* FindByUniquePosition(TInt aPos);

    68 

    69 	static TInt InitPlugin(CFsPlugin& aPlugin);

    70 	static void TransferRequests(CPluginThread* aPluginThread);

    71 	static void CancelPlugin(CFsPlugin* aPlugin,CSessionFs* aSession);

    72 	static TInt ChainCount();

    73 	static TInt Plugin(CFsPlugin*& aPlugin, TInt aPos);

    74 

    75 	static void LockChain();

    76 	static void UnlockChain();

    77 

    78 	static CFsPluginConn* CreatePluginConnL(TInt aUniquePosition, TUint aClientId);

    79 	static CFsPluginConn* GetPluginConnFromHandle(CSessionFs* aSession, TInt aHandle);

    80 

    81 	static TBool IsPluginConnThread(TThreadId tid, CFsPlugin* aPlugin);

    82 

    83 	static void DispatchSync(CFsRequest* aRequest);

    84 	static void CompleteSessionRequests(CSessionFs* aSession, TInt aValue, CFsInternalRequest* aRequest);

    85 

    86 private:

    87 	static TInt UpdateMountedDrive(CFsPlugin* aPlugin, CFsPluginFactory* aFactory,TInt aDrive);

    88 	static void GetNextCancelPluginOpRequest(CPluginThread* aPluginThread, CFsRequest*& aCancelPluginRequest);

    89 private:

    90 	static CFsObjectCon* iPluginFactories;

    91 	static CFsObjectCon* iPluginConns;

    92 

    93 	static RPointerArray<CFsPlugin> iPluginChain;

    94 	static RFastLock iChainLock;

    95 

    96 	static CFsSyncMessageScheduler* iScheduler;

    97 

    98 	friend class RequestAllocator;

    99 	};

   100 

   101 #endif // __SF_PLUGIN_H

   102