userlibandfileserver/fileserver/sfat32/sl_disk.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Sat, 20 Feb 2010 00:10:51 +0200
branchRCL_3
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child 140 2ac1c5c27758
child 249 a179b74831c9
permissions -rw-r--r--
Revision: 201007 Kit: 201007
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// Copyright (c) 1996-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// f32\sfat\sl_disk.cpp
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// 
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//
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#include "sl_disk.h"
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#include "sl_cache.h"
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#include "sl_dir_cache.h"
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/**
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@file
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*/
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//################################################################################################################################
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//#     CRawDisk implementation
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//################################################################################################################################
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/**
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    Factory function. Constructs objects of the classes derived from CRawDisk.
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    @param  aOwner      reference to the onwning FAT Mount class
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    @param  aLocDrvCaps local drive capabilities from the media driver
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    @return pointer to the constructed object. May be NULL on error.
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*/
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CRawDisk* CRawDisk::NewL(CFatMountCB& aOwner, const TLocalDriveCaps& aLocDrvCaps)
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{
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    __PRINT1(_L("CRawDisk::NewL() drv:%d"), aOwner.DriveNumber());
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    if(aLocDrvCaps.iMediaAtt & KMediaAttVariableSize)
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    {//-- this is the RAM drive "attribute"
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        ASSERT((aLocDrvCaps.iDriveAtt & (KDriveAttInternal|KDriveAttLocal)) && aLocDrvCaps.iType == EMediaRam);
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        if(!aLocDrvCaps.iBaseAddress)
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        {
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            ASSERT(0);
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            return NULL;
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        }
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        return CRamDisk::NewL(aOwner);
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    }
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    //-- create CAtaDisk by default
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    return CAtaDisk::NewL(aOwner);
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}
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CRawDisk::CRawDisk(CFatMountCB& aOwner)
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    {
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    iFatMount = &aOwner;
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    }
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/**
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    Default implementation. Initialises and re-initialises the object.
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*/
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void CRawDisk::InitializeL()
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    {
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    ASSERT(iFatMount);
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    }
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TInt CRawDisk::GetLastErrorInfo(TDes8& /*aErrorInfo*/) const
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	{
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	return KErrNotSupported;
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	}
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//################################################################################################################################
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//##    CAtaDisk class implementation
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//################################################################################################################################
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CAtaDisk::CAtaDisk(CFatMountCB& aFatMount)
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         :CRawDisk(aFatMount), iDrive(aFatMount.DriveInterface())
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	{
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	}
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CAtaDisk::~CAtaDisk()
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    {
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    delete ipDirCache;
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    delete iUidCache;
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    }
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//-------------------------------------------------------------------------------------
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/**
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    CAtaDisk factory method.
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    @param  aFatMount reference to the owner.
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    @return pointer to the constructed object.
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*/
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CAtaDisk* CAtaDisk::NewL(CFatMountCB& aFatMount)
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	{
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	__PRINT1(_L("CAtaDisk::NewL() drv:%d"), aFatMount.DriveNumber());
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    CAtaDisk* pSelf = new (ELeave) CAtaDisk(aFatMount);
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    CleanupStack::PushL(pSelf);
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    pSelf->ConstructL();
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    pSelf->InitializeL();
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    CleanupStack::Pop();
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	return pSelf;
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	}
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//-------------------------------------------------------------------------------------
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/** 2nd stage constructor */
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void CAtaDisk::ConstructL()
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    {
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    //===========================  create data WT cache that is primarily used for caching exacutable modules' UIDs
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    const TUint32 KUidCachePageSzLog2 = 9; //-- 512 bytes in page 
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    const TUint32 KUidCachePages = 64;     //-- 64 pages; total cache size is 32K 
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    iUidCache = CMediaWTCache::NewL(iDrive, KUidCachePages, KUidCachePageSzLog2, 0);
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    //=========================== create directory cache
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    //-- Get dir. cache parameters from config. They may be set in estart.txt for a specified drive.
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    const TUint32 KDirCacheSize = iFatMount->FatConfig().DirCacheSize(); //- Total directory cache size, bytes.
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    const TUint32 KMaxDirCachePageSzLog2 = iFatMount->FatConfig().DirCacheMaxPageSizeLog2(); //- Log2 of the Max. dir. cache page.
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    __PRINT2(_L("CAtaDisk::ConstructL() Dir Cache config:%d,%d"),KDirCacheSize,KMaxDirCachePageSzLog2);
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    ASSERT(KDirCacheSize >= K1KiloByte && KDirCacheSize <= K1MegaByte);
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    ASSERT((KMaxDirCachePageSzLog2 >= KDefSectorSzLog2) && (Pow2(KMaxDirCachePageSzLog2) <= KDirCacheSize));
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    //-- calculate the size and number of pages for the dir. cache. 
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    //-- if the mount's cluster size is less than max. page size from config, the page size will be cluster size.
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    //-- otherwise it will be the value from config. I.e  the minimal page size is cluster size; the maximal page size is taken from config.
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    //-- The number of pages depends on total cache size and page size.
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    const TUint clustSizeLog2 = iFatMount->ClusterSizeLog2(); //-- current FAT cluster size Log2
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    const TUint32 pageSzLog2 = (clustSizeLog2 <= KMaxDirCachePageSzLog2) ? clustSizeLog2 : KMaxDirCachePageSzLog2;
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    const TUint32 numPages = KDirCacheSize / (Pow2(pageSzLog2));
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    ASSERT(!ipDirCache);
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#ifdef USE_DP_DIR_CACHE
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    //=========================== create Demand Paging type of the directory cache
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    // initialize cache memory manager as all file systems have mounted by now
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	if(CCacheMemoryManagerFactory::CacheMemoryManager())
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		{
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		// Note: the configuration data of min and max cache size are aligned with the memory size it
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		//	occupies in kernel as we are using demand paging subsystem for dynamic cache size support. 
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		//  Therefore, they are refered as 'Mem Size' in following calculation.
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		//  However, 'Data Size' refers to the logical size of a page, i.e. the actual data size each page
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		//  contains.
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		// The constraints we have to consider when setting up the dynamic cache:
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		// 	1. each page's data size is aligned with cluster size, unless cluster size is bigger than
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		//  	the default maximum page size allowed (typically 32 KB).
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		// 	2. if page's data size is smaller than segment size (typically 4 KB), i.e. the unit size of 
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		//     	demand paging subsystem's page management, we will still use up the whole segment for
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		// 		that page.
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		//  3. the default min and max cache's memory size is pre-defined in  fat_config.cpp file.
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		// 		(see KDef_DynamicDirCacheMin & KDef_DynamicDirCacheMax).
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		// calculate page data size (logical view of page size)
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	    const TUint32 DefMaxCachePageLog2 = iFatMount->FatConfig().DynamicDirCacheMaxPageSizeLog2();
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	    const TUint32 PageDataSizeLog2 = clustSizeLog2 < DefMaxCachePageLog2 ? clustSizeLog2 : DefMaxCachePageLog2;
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		// calculate page number, based on memory size we have reserved
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	    const TUint32 SegmentSizeLog2 = CCacheMemoryManagerFactory::CacheMemoryManager()->SegmentSizeInBytesLog2();
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	    const TUint32 PageMemSizeLog2 = PageDataSizeLog2 < SegmentSizeLog2 ? SegmentSizeLog2 : PageDataSizeLog2;
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	    TUint32 CacheSizeMinInPages = iFatMount->FatConfig().DynamicDirCacheSizeMin() >> PageMemSizeLog2;
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	    TUint32 CacheSizeMaxInPages = iFatMount->FatConfig().DynamicDirCacheSizeMax() >> PageMemSizeLog2;
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	    // cache memory client is connected via name 
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	    TBuf<0x20> clientName = _L("CACHE_MEM_CLIENT:");
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		clientName.Append('A'+iFatMount->DriveNumber());
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		TRAPD(err, ipDirCache = CDynamicDirCache::NewL(iDrive, CacheSizeMinInPages, CacheSizeMaxInPages, PageDataSizeLog2, KDefSectorSzLog2, clientName));
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		if (err == KErrNone)
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	    	return;
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        //-- fall back to constructing old type of cache
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        }
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#endif // USE_DP_DIR_CACHE
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    //=========================== create legacy type of the directory cache
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    ASSERT(!ipDirCache);
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    ipDirCache = CMediaWTCache::NewL(iDrive, numPages, pageSzLog2, KDefSectorSzLog2);
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    __PRINT3(_L("CDirCache::NewL(drive: %C, NumPages=%d, PageSize=%u)"), 'A'+iFatMount->DriveNumber(), numPages, 1<<pageSzLog2);
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    }
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//-------------------------------------------------------------------------------------
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/**
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    Initialises and re-initialises the object.
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*/
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void CAtaDisk::InitializeL()
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{
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    CRawDisk::InitializeL();
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    //-- there is a little issue here. after formatting FAT mounts's cluster size can change.
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    //-- dir. cache page size depends on the cluster size. This method doesn't change the dir. cache page size.
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    //-- At present it is done in CFatMountCB::InitializeL() that deletes this object and then reconstructs it again.
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    //-- invalidate directory cache here
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    ipDirCache->InvalidateCache();
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    TInt64  cacheBasePos;
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    if(iFatMount->FatType() == EFat32)
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        {
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        //-- this is FAT32, all directories including Root are files and aligned to the cluster heap boundary
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        //-- set dir. cache base position to the cluster heap boundary
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        const TUint32 offsetMask = (1 << iFatMount->ClusterSizeLog2() )-1;
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        cacheBasePos = (iFatMount->ClusterBasePosition() & offsetMask);
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        }
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    else
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        {
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        //-- this is FAT12/16. Root directory is a separate volume object and has no alignment.
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        //-- set cache base position to its beginning.
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        cacheBasePos = iFatMount->StartOfRootDirInBytes();
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        }
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    ipDirCache->SetCacheBasePos(cacheBasePos);
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}
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//-------------------------------------------------------------------------------------
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/**
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    Read data from the media through LRU data cache cache. 
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    @param  aPos        absolute media position
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    @param  aLength     how many bytes to read
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    @param  aDes        data descriptor
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    @leave on error
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*/
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void CAtaDisk::ReadCachedL(TInt64 aPos,TInt aLength,TDes8& aDes) const
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	{
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    __PRINT3(_L("CAtaDisk::ReadL() pos:%u:%u, len:%u"), I64HIGH(aPos), I64LOW(aPos), aLength);
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    iUidCache->ReadL(aPos, aLength, aDes);
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	}
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//-------------------------------------------------------------------------------------
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/**
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    Write data to the media through LRU data cache
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    @param  aPos        absolute media position
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    @param  aDes        data descriptor
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    @leave on error
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*/
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void CAtaDisk::WriteCachedL(TInt64 aPos, const TDesC8& aDes)
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	{
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    __PRINT3(_L("CAtaDisk::WriteL() pos:%u:%u, len:%u"), I64HIGH(aPos), I64LOW(aPos), aDes.Size());
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    iUidCache->WriteL(aPos, aDes);
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	}
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//-------------------------------------------------------------------------------------
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/**
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    Read data from the media directly without any caches.
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    Mostly used by file IO
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    @param  aPos        absolute media position
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    @param  aLength     how many bytes to read
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	@param  aTrg		Pointer to the data descriptor, i.e. (const TAny*)(&TDes8)
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	@param  aMessage	Refrence to server message from request
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	@param  anOffset	Offset into read data to write
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    @leave on error
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*/
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void CAtaDisk::ReadL(TInt64 aPos,TInt aLength,const TAny* aTrg,const RMessagePtr2 &aMessage,TInt anOffset) const
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	{
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	__PRINT4(_L("CAtaDisk::ReadL() pos:%u:%u, len:%u, offset:%u"), I64HIGH(aPos), I64LOW(aPos), aLength, anOffset);
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	User::LeaveIfError(iDrive.ReadNonCritical(aPos,aLength,aTrg,aMessage,anOffset));
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	}
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//-------------------------------------------------------------------------------------
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/**
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    Write data to the media directly without any cached.
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    Mostly used by file IO
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    This method shall invalidate some data caches to keep them in synch with the media.
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    @param aPos		Media position in bytes
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    @param aLength	Length in bytes of write
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	@param aTrg		Pointer to the data descriptor, i.e. (const TAny*)(&TDes8)
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	@param aMessage	Refrence to server message from request, contains data
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	@param anOffset	Offset into write data to use in write
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    @leave on error
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*/
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void CAtaDisk::WriteL(TInt64 aPos,TInt aLength,const TAny* aSrc,const RMessagePtr2 &aMessage,TInt anOffset)
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	{
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    __PRINT4(_L("CAtaDisk::WriteL() pos:%u:%u, len:%u, offset:%u"), I64HIGH(aPos), I64LOW(aPos), aLength, anOffset);
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	//-- write data to the media directly
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    User::LeaveIfError(iDrive.WriteNonCritical(aPos,aLength,aSrc,aMessage,anOffset));
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    //-- we need to invalidate UID cache page that corresponds to aPos (if any). This is UID caching specific. UID is stored in the first few bytes of 
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    //-- the executable module and therefore belongs to one cache page only.
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    //-- If someone writes to the beginning of the exe module file, corresponding UID cache page will be invalidated and re-read from the media later
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    iUidCache->InvalidateCachePage(aPos); 
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    //-- invalidate affected(if any) part of the FAT cache in the case if someone used to write data to FAT area, which usually do not happen 
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    iFatMount->FAT().InvalidateCacheL(aPos,aLength);
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	}
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//-------------------------------------------------------------------------------------
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/** Get information for last disk error */
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TInt CAtaDisk::GetLastErrorInfo(TDes8& aErrorInfo) const
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	{
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	return iDrive.GetLastErrorInfo(aErrorInfo);
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	}
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//-------------------------------------------------------------------------------------
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/** Invalidate whole UID cache */
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void CAtaDisk::InvalidateUidCache()
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{
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    ASSERT(iUidCache);
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    iUidCache->InvalidateCache();
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}
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/** 
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    Invalidate the UID cache page that has aPos cached.
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    This method doesn't pay attention to the length of the block being invalidated because
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    UID lives in the very beginning of the exe module and always fits into a single page
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*/
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void CAtaDisk::InvalidateUidCachePage(TUint64 aPos)
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{
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    ASSERT(iUidCache);
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    iUidCache->InvalidateCachePage(aPos);
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}
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//################################################################################################################################
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//##    CRamDisk class implementation
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//################################################################################################################################
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/**
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    CRamDisk factory method.
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    @param  aFatMount reference to the owner.
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    @return pointer to the constructed object.
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diff changeset
   368
*/
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diff changeset
   369
CRamDisk* CRamDisk::NewL(CFatMountCB& aFatMount)
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parents:
diff changeset
   370
	{
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
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diff changeset
   371
    __PRINT1(_L("CRamDisk::NewL() drv:%d"), aFatMount.DriveNumber());
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diff changeset
   372
	CRamDisk* pSelf = new(ELeave)CRamDisk(aFatMount);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   373
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
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parents:
diff changeset
   374
    CleanupStack::PushL(pSelf);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
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parents:
diff changeset
   375
  
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
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parents:
diff changeset
   376
    pSelf->InitializeL();
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John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   377
    
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
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parents:
diff changeset
   378
    CleanupStack::Pop();
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   379
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   380
	return pSelf;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   381
	}
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   382
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   383
CRamDisk::CRamDisk(CFatMountCB& aFatMount)
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   384
	     :CRawDisk(aFatMount)
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   385
    {
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   386
	}
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   387
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   388
//-------------------------------------------------------------------------------------
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John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   389
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   390
/**
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   391
    Initialises and re-initialises the object.
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   392
*/
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   393
void CRamDisk::InitializeL()
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   394
{
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   395
    CRawDisk::InitializeL();
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   396
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   397
    //-- set the RAM disk base
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   398
    TLocalDriveCapsV2 caps;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   399
    TPckg<TLocalDriveCapsV2> capsPckg(caps);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   400
    User::LeaveIfError(iFatMount->LocalDrive()->Caps(capsPckg));
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   401
  
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   402
    ASSERT(caps.iMediaAtt & KMediaAttVariableSize);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   403
    
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   404
    //-- set RAM disk base
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   405
    iRamDiskBase = caps.iBaseAddress; 
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   406
    ASSERT(iRamDiskBase);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   407
}
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   408
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   409
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   410
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   411
/** @return the start address of the Ram Drive in low memory */
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John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   412
TUint8* CRamDisk::RamDiskBase() const
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
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parents:
diff changeset
   413
	{
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
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parents:
diff changeset
   414
	return iRamDiskBase;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   415
	}
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   416
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   417
//-------------------------------------------------------------------------------------
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   418
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   419
// Read aLength of data from the disk
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   420
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   421
void CRamDisk::ReadCachedL(TInt64 aPos,TInt aLength,TDes8& aDes) const
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   422
	{
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   423
	
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   424
	__PRINT3(_L("CRamDisk::ReadL Base 0x%x Pos 0x%x, Len %d"),RamDiskBase(),I64LOW(aPos),aLength);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   425
	__ASSERT_ALWAYS((aPos+aLength<=I64INT(iFatMount->Size())) && (aLength>=0),User::Leave(KErrCorrupt));
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   426
	Mem::Copy((TUint8*)aDes.Ptr(),RamDiskBase()+I64LOW(aPos),aLength);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   427
	aDes.SetLength(aLength);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   428
	}
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   429
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   430
//-------------------------------------------------------------------------------------
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   431
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   432
// Write aLength of data to the disk
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   433
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   434
void CRamDisk::WriteCachedL(TInt64 aPos,const TDesC8& aDes)
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   435
	{
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   436
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   437
	__PRINT3(_L("CRamDisk::WriteL Base 0x%x Pos 0x%x, Len %d"),RamDiskBase(),aPos,aDes.Length());
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   438
	__ASSERT_ALWAYS(aPos+aDes.Length()<=I64INT(iFatMount->Size()),User::Leave(KErrCorrupt));
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   439
	Mem::Copy(RamDiskBase()+I64LOW(aPos),(TUint8*)aDes.Ptr(),aDes.Length());
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   440
	}
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   441
	
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   442
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   443
//-------------------------------------------------------------------------------------
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   444
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   445
// Read from ramDrive into thread relative descriptor
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   446
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   447
void CRamDisk::ReadL(TInt64 aPos,TInt aLength,const TAny* /*aTrg*/,const RMessagePtr2 &aMessage,TInt anOffset) const
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   448
	{
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   449
	__PRINT2(_L("CRamDisk::ReadL TAny* Pos 0x%x, Len %d"),aPos,aLength);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   450
	__ASSERT_ALWAYS((aPos+aLength<=I64INT(iFatMount->Size())) && (aLength>=0),User::Leave(KErrCorrupt));
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   451
	TUint8* pos=RamDiskBase()+I64LOW(aPos);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   452
	TPtrC8 buf(pos,aLength);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   453
	aMessage.WriteL(0,buf,anOffset);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   454
	}
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   455
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   456
//-------------------------------------------------------------------------------------
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   457
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   458
// Write from thread relative descriptor into ramDrive
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   459
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   460
void CRamDisk::WriteL(TInt64 aPos,TInt aLength,const TAny* /*aSrc*/,const RMessagePtr2 &aMessage,TInt anOffset)
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   461
	{
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   462
	__PRINT2(_L("CRamDisk::WriteL TAny* Pos 0x%x, Len %d"),aPos,aLength);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   463
	__ASSERT_ALWAYS(aPos+aLength<=I64INT(iFatMount->Size()),User::Leave(KErrCorrupt));
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   464
	TUint8* pos=RamDiskBase()+I64LOW(aPos);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   465
	TPtr8 buf(pos,aLength);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   466
	aMessage.ReadL(0,buf,anOffset);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   467
	}
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   468
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   469
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   470
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   471
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   472
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   473
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   474
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   475
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   476
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   477
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   478
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   479
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   480
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   481
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   482
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   483
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   484
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   485
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   486
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   487
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   488
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   489
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   490
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   491
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   492
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   493
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   494