sl@0: // Copyright (c) 2001-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of the License "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // f32\sfile\sf_cache.h
sl@0: // 
sl@0: //
sl@0: 
sl@0: #if !defined(__SF_CACHE_H__)
sl@0: #define __SF_CACHE_H__
sl@0: #include "sf_image.h"
sl@0: 
sl@0: // Cached information for each file
sl@0: class TRomImageHeader;
sl@0: class TDirectoryCacheHeader;
sl@0: class TFileCacheRecord : public TImageInfo
sl@0: 	{
sl@0: public:
sl@0: 	inline const TText8* NameText() const
sl@0: 		{ return (const TText8*)(this + 1); }
sl@0: 	inline TPtrC8 Name() const
sl@0: 		{ return TPtrC8(NameText(), iNameLength); }
sl@0: 	inline const TUint8* ExportDescription() const
sl@0: 		{ return NameText() + iNameLength; }
sl@0: 	inline TBool ExtrasValid() const
sl@0: 		{ return iUid[0]; }
sl@0: 	inline const TRomImageHeader* RomImageHeader() const
sl@0: 		{ return (const TRomImageHeader*)iUid[0]; }
sl@0: 	inline void SetXIP(const TRomImageHeader* aR)
sl@0: 		{ iUid[0] = (TUint32)aR; }
sl@0: 	inline TBool IsXIP() const
sl@0: 		{ return !(iUid[0]&3); }
sl@0: 	static TInt Order(const TFileCacheRecord& aL, const TFileCacheRecord& aR);
sl@0: 	void Dump(const char* aTitle);
sl@0: public:
sl@0: 	TInt GetImageInfo(RImageInfo& aInfo, const TDesC8& aPathName, TDirectoryCacheHeader* aDirHead, TInt aIndex);
sl@0: public:
sl@0: 	// UID1 must be EXE or DLL, 0 means extra information not valid
sl@0: 	// UID1 nonzero and multiple of 4 means XIP in which case it points to the ROM image header
sl@0: 	// iExportDirCount = number of bytes available for export description if iUid[0]=0
sl@0: 	// 8-bit name follows (store base+ext only, not version)
sl@0: 	// export description follows name
sl@0: 	};
sl@0: 
sl@0: class TFileCacheRecordSearch : public TFileCacheRecord
sl@0: 	{
sl@0: public:
sl@0: 	TFileCacheRecordSearch(const TDesC8& aSearchName);
sl@0: public:
sl@0: 	TUint8 iSearchName[KMaxKernelName];
sl@0: 	};
sl@0: 
sl@0: // Record of a cached path.
sl@0: class TPathListRecord
sl@0: 	{
sl@0: public:
sl@0: 	static TPathListRecord* FindPathNameInList(const TDesC8& aPath);
sl@0: 	inline const TDesC8* PathName() const
sl@0: 		{ return (const TDesC8*)(this + 1); }
sl@0: 	static TInt Init();
sl@0: private:
sl@0: 	void MoveToHead();
sl@0: 	static TPathListRecord* New(const TDesC8& aPath, TBool aKeep);
sl@0: 	static TPathListRecord* DoFindPathNameInList(const TDesC8& aPath);
sl@0: 	static TPathListRecord* AddToPathList(const TDesC8& aPath, TBool aKeep);
sl@0: public:
sl@0: 	TPathListRecord* iNext;
sl@0: 	TBool iKeep;
sl@0: 	// place a TBufC8 immediately after
sl@0: public:
sl@0: 	static TPathListRecord* First;
sl@0: 	static TPathListRecord* LastStatic;
sl@0: 	};
sl@0: 
sl@0: class TCacheHeapList
sl@0: 	{
sl@0: public:
sl@0: 	TCacheHeapList(TInt aSize);
sl@0: 	TAny* Allocate(TInt aBytes);
sl@0: public:
sl@0: 	TCacheHeapList* iNext;
sl@0: private:
sl@0: 	TInt iAllocated;
sl@0: 	TInt iSize;
sl@0: 	};
sl@0: 
sl@0: class TDirectoryCacheHeader;
sl@0: NONSHARABLE_CLASS(CCacheNotifyDirChange) : public CActive
sl@0: 	{
sl@0: public:
sl@0: 	CCacheNotifyDirChange(TDriveNumber aDrive, TDirectoryCacheHeader& aDirHead);
sl@0: 	~CCacheNotifyDirChange();
sl@0: 	TInt RegisterNotification(TPathListRecord* aPathRec, TNotifyType aType);
sl@0: 	void DoCancel();
sl@0: 	void RunL();
sl@0: private:
sl@0:     TDriveNumber iDrive;
sl@0: 	TDirectoryCacheHeader* iDirHead;
sl@0: 	};
sl@0: 
sl@0: class TEntry;
sl@0: class TDirectoryCacheHeader
sl@0: 	{
sl@0: public:
sl@0: 	TDirectoryCacheHeader(TPathListRecord* aPath);
sl@0: 	~TDirectoryCacheHeader();
sl@0: 	TAny* Allocate(const TInt aBytes);
sl@0: 	TFileCacheRecord* NewRecord(const TDesC8& aName, TUint32 aAttr, TUint32 aVer, const TEntry& aEntry);
sl@0: 	TFileCacheRecord* NewRecord(const TFileCacheRecord& aRecord, TInt aEDS);
sl@0: 	TInt PopulateFromDrive(const TDesC8& aPathName);
sl@0: public:
sl@0: 	TDirectoryCacheHeader* iNext;		// list of directories per drive
sl@0: 	TCacheHeapList* iFirstHeapBlock;	// heap blocks to hold TFileCacheRecord entries
sl@0: 	TPathListRecord* iPath;
sl@0: 	TInt iRecordCount;					// number of TFileCacheRecord entries
sl@0: 	TFileCacheRecord** iCache;			// array of pointers to TFileCacheRecord entries
sl@0: 	TBool iNotPresent;
sl@0: 	CCacheNotifyDirChange* iNotify;
sl@0: private:
sl@0: 	TInt GetMoreHeap();
sl@0: 	};
sl@0: 
sl@0: class TDriveCacheHeader
sl@0: 	{
sl@0: public:
sl@0: 	TDriveCacheHeader();
sl@0: 	~TDriveCacheHeader();
sl@0: 	TDirectoryCacheHeader* FindDirCache(TPathListRecord* aPath);
sl@0: 	TInt GetDirCache(TDirectoryCacheHeader*& aCache, TPathListRecord* aPath, const TDesC8& aDriveAndPath);
sl@0: public:
sl@0: 	TDirectoryCacheHeader* iDirectoryList; // List of Directories
sl@0: 	TUint iDriveAtt;
sl@0: 	TInt iDriveNumber;
sl@0: 	};
sl@0: 
sl@0: 
sl@0: void InitializeFileNameCache();
sl@0: TInt CheckLoaderCacheInit();
sl@0: 
sl@0: #endif