1 // Copyright (c) 2004-2009 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 #ifndef CACHEMGR_H

    17 #define CACHEMGR_H

    18 

    19 #include <e32base.h>

    20 #include <cinidata.h>

    21 #include "log.h"

    22 #include "panic.h"

    23 #include "srvdefs.h"

    24 

    25 _LIT(KCacheMgrIniFile, "centrep.ini");

    26 

    27 class CSharedRepository;

    28 

    29 /**

    30 @internalTechnology

    31 This is the class which manages Coarse-Grained cache operations including delayed-unloading of

    32 repositories and forced eviction of repositories under OOM conditions.

    33 */

    34 class CRepositoryCacheManager : public CTimer

    35 	{

    36 	friend class TRepositoryCacheManagerTester;

    37 public:

    38 	static CRepositoryCacheManager* NewLC();

    39 	~CRepositoryCacheManager();

    40 	void ConstructL();

    41 	

    42 	void EnableCache();

    43 	void DisableCache();

    44 	void EnableCache(TInt aDefaultTimeout, TInt aCacheSize);

    45 	

    46 	inline TBool Enabled();

    47 

    48 	TBool StartEviction(CSharedRepository*& aRepository);

    49 	

    50 	void RemoveIdleRepository(CSharedRepository* aRepository);	

    51 	void FlushCache();

    52 

    53 protected:

    54 	/**

    55 	@internalTechnology

    56 	This is the class/structure which keeps eviction-related cache data 

    57 	*/

    58 	class TRepositoryCacheInfo

    59 		{

    60 	public:

    61 		TTime iCacheTime;

    62 		CSharedRepository* iSharedRepository;

    63 		};

    64 

    65 	void RunL();

    66 		

    67 private:

    68 	inline CRepositoryCacheManager(); 

    69 

    70 	void Evict(TInt aIdleRepIndex);

    71 	

    72 	static TInt ForcedEvictionSortOrder(const TRepositoryCacheInfo &aRepository1, const TRepositoryCacheInfo &aRepository2);

    73 	static TInt TimerEvictionSortOrder(const TRepositoryCacheInfo &aRepository1, const TRepositoryCacheInfo &aRepository2);	

    74 	

    75 private:

    76 	TBool iEnabled; 

    77 	TInt  iTotalCacheUsage; 

    78 	RArray<TRepositoryCacheInfo> iIdleRepositories;

    79 	TTimeIntervalMicroSeconds32 iDefaultTimeout;

    80 	TInt  iCacheSize;

    81 	};

    82 

    83 #include "cachemgr.inl"

    84 

    85 #endif // CACHEMGR_H