--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/persistentstorage/centralrepository/cenrepsrv/cachemgr.h	Fri Jan 22 11:06:30 2010 +0200
@@ -0,0 +1,145 @@
+// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+
+#ifndef CACHEMGR_H
+#define CACHEMGR_H
+
+#include <e32base.h>
+#include "log.h"
+#include "panic.h"
+#include "srvdefs.h"
+#include <f32file.h>
+
+_LIT(KCacheMgrIniFile, "centrep.ini");
+
+#ifndef DEFAULT_CENTREP_CACHE_SIZE
+	/** 
+	The default size of the coarse-grained cache, used when there is no .ini setting defined.
+	The default value is approximately the size needed to cache everything during device boot-up
+	@internalComponent
+	*/
+	#define DEFAULT_CENTREP_CACHE_SIZE 100000
+#else
+	#if DEFAULT_CENTREP_CACHE_SIZE <= 0
+		#error "DEFAULT_CENTREP_CACHE_SIZE macro value must be greater than 0"
+	#endif
+#endif
+
+/** 
+The default size of the coarse-grained cache. 
+@internalComponent
+*/
+const TInt KDefaultCacheSize=DEFAULT_CENTREP_CACHE_SIZE;
+
+/** 
+The special cache size value used for enabling the cache without changing the current cache size value.
+@internalComponent
+*/
+const TInt KInvalidCacheSize	= -1;
+
+#ifndef DEFAULT_CENTREP_CACHE_EVICTION_TIMEOUT
+	/** 
+	The default timeout value of the coarse-grained cache, used when there is no .ini setting defined.
+	The default value is approximately the timeout needed to keep everything in cache during device boot-up
+	@internalComponent
+	*/
+	// If this value will need to be changed, please ensure the KTimeoutToSizeConversion is adjusted accordingly.
+	#define DEFAULT_CENTREP_CACHE_EVICTION_TIMEOUT 120000000
+#else
+	#if DEFAULT_CENTREP_CACHE_EVICTION_TIMEOUT <= 0
+		#error "DEFAULT_CENTREP_CACHE_EVICTION_TIMEOUT macro value must be greater than 0"
+	#endif
+#endif
+
+/** 
+The default timeout value (in microseconds) for the coarse-grained cache repository eviction. 
+@internalComponent
+*/
+const TInt KDefaultEvictionTimeout=DEFAULT_CENTREP_CACHE_EVICTION_TIMEOUT;
+
+/** 
+The constant used in forced evicition sorting algorithm for converting microsecond-based timeout 
+values to an intermediary unit compatible with byte-based size values.
+@internalComponent
+*/
+const TInt KTimeoutToSizeConversion=DEFAULT_CENTREP_CACHE_EVICTION_TIMEOUT/(100000*24);
+
+/** 
+The special timeout value used for enabling the cache without changing the current timeout value.
+@internalComponent
+*/
+const TInt KInvalidEvictionTimeout=-1;
+
+
+class CSharedRepository;
+
+/**
+@internalTechnology
+This is the class which manages Coarse-Grained cache operations including delayed-unloading of
+repositories and forced eviction of repositories under OOM conditions.
+*/
+class CRepositoryCacheManager : public CTimer
+	{
+	friend class TRepositoryCacheManagerTester;
+public:
+	static CRepositoryCacheManager* NewLC(RFs& aFs);
+	~CRepositoryCacheManager();
+	void ConstructL(RFs& aFs);
+	
+	void EnableCache();
+	void DisableCache(TBool aFullFlush = EFalse);
+	void EnableCache(TInt aDefaultTimeout, TInt aCacheSize);
+	
+	inline TBool Enabled();
+
+	TBool StartEviction(CSharedRepository*& aRepository);
+	
+	void RemoveIdleRepository(CSharedRepository* aRepository);	
+	void FlushCache(TBool aFullFlush = ETrue);
+
+protected:
+	/**
+	@internalTechnology
+	This is the class/structure which keeps eviction-related cache data 
+	*/
+	class TRepositoryCacheInfo
+		{
+	public:
+		TTime iCacheTime;
+		CSharedRepository* iSharedRepository;
+		};
+
+	void RunL();
+		
+private:
+	inline CRepositoryCacheManager(); 
+
+	void Evict(TInt aIdleRepIndex);
+	void RescheduleTimer(const TTime& aTimeInUTC);
+	
+	static TInt ForcedEvictionSortOrder(const TRepositoryCacheInfo &aRepository1, const TRepositoryCacheInfo &aRepository2);
+	static TInt TimerEvictionSortOrder(const TRepositoryCacheInfo &aRepository1, const TRepositoryCacheInfo &aRepository2);	
+	
+private:
+	TBool iEnabled; 
+	TInt  iTotalCacheUsage; 
+	RArray<TRepositoryCacheInfo> iIdleRepositories;
+	TTimeIntervalMicroSeconds32 iDefaultTimeout;
+	TInt  iCacheSize;
+	};
+
+#include "cachemgr.inl"
+
+#endif // CACHEMGR_H