author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 31 Aug 2010 16:34:26 +0300 | |
branch | RCL_3 |
changeset 43 | c1f20ce4abcf |
parent 2 | 4122176ea935 |
child 44 | 3e88ff8f41d5 |
permissions | -rw-r--r-- |
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// Copyright (c) 2008-2009 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_dir_cache.inl |
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// |
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// |
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|
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/** |
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@file |
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@internalTechnology |
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*/ |
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#ifndef SL_DIR_CACHE_INL |
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#define SL_DIR_CACHE_INL |
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#include "sl_dir_cache.h" |
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/** |
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Get function of TDynamicDirCachePage. |
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@return TInt64 the starting media address of the page content. |
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*/ |
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TInt64 TDynamicDirCachePage::StartPos() const |
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{ |
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return iStartMedPos; |
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} |
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/** |
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Get function of TDynamicDirCachePage. |
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@return TUint8* the starting ram content of the page content. |
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*/ |
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TUint8* TDynamicDirCachePage::StartPtr() const |
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{ |
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return iStartRamAddr; |
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} |
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/** |
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Set function of TDynamicDirCachePage. |
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@param aPtr starting RAM Ptr that holds the cache page data. |
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*/ |
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void TDynamicDirCachePage::SetStartPtr(TUint8* aPtr) |
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{ |
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iStartRamAddr = aPtr; |
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} |
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/** |
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Set function of TDynamicDirCachePage. |
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@param aIsValid boolean value to set validity of the page content. |
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*/ |
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void TDynamicDirCachePage::SetValid(TBool aIsValid) |
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{ |
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iValid = aIsValid; |
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} |
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/** |
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Get function of TDynamicDirCachePage. |
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@return TBool boolean value that indicates validity of the page content. |
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*/ |
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TBool TDynamicDirCachePage::IsValid() const |
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{ |
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return iValid; |
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} |
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/** |
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Set function of TDynamicDirCachePage. |
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@param aLocked flag that sets if the page is locked or not. |
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*/ |
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void TDynamicDirCachePage::SetLocked(TBool aLocked) |
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{ |
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iLocked = aLocked; |
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} |
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/** |
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Get function of TDynamicDirCachePage. |
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@return TBool boolean value that indicates if the page is locked. |
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*/ |
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TBool TDynamicDirCachePage::IsLocked() const |
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{ |
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return iLocked; |
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} |
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/** |
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Set function of TDynamicDirCachePage. |
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@param aType set page type: EUnknown, ELocked, EUnlocked or EActivePage. |
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*/ |
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void TDynamicDirCachePage::SetPageType(TDynamicDirCachePage::TPageType aType) |
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{ |
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iType = aType; |
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} |
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/** |
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Get function of TDynamicDirCachePage. |
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@return TPageType get page type: EUnknown, ELocked, EUnlocked or EActivePage. |
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*/ |
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TDynamicDirCachePage::TPageType TDynamicDirCachePage::PageType() |
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{ |
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return iType; |
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} |
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/** |
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Get function of TDynamicDirCachePage. |
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@return TUint32 page size in bytes. |
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*/ |
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TUint32 TDynamicDirCachePage::PageSizeInBytes() const |
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{ |
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return 1 << iOwnerCache->PageSizeInBytesLog2(); |
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} |
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/** |
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Deque the page from its queue. |
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@see TDblQueLink::Deque() |
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*/ |
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void TDynamicDirCachePage::Deque() |
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iLink.Deque(); |
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} |
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/** |
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Get function of TDynamicDirCachePage. |
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@return TUint32 page size in segments. |
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*/ |
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TUint32 TDynamicDirCachePage::PageSizeInSegs() const |
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{ |
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return iOwnerCache->PageSizeInSegs(); |
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} |
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/** |
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Interpret the media address into ram address. |
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@param aPos the media address to be interpreted |
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@return TUint8* the ram content pointer that contains that media content. |
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*/ |
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TUint8* TDynamicDirCachePage::PtrInPage(TInt64 aPos) const |
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{ |
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ASSERT(PosCachedInPage(aPos)); |
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return iStartRamAddr + (((TUint32)aPos - (TUint32)iStartMedPos) & (PageSizeInBytes() - 1)); |
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} |
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/** |
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Query function, to check if the media address is contained in the page. |
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@param aPos the media address to be queried. |
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@return TBool ETrue if the media address is cached in the page, otherwise EFalse. |
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*/ |
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TBool TDynamicDirCachePage::PosCachedInPage(TInt64 aPos) const |
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{ |
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return (aPos >= iStartMedPos && aPos < iStartMedPos + PageSizeInBytes()); |
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} |
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/** |
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Reset the media address to 0, invalidate page content. |
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*/ |
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void TDynamicDirCachePage::ResetPos() |
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{ |
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iStartMedPos = 0; |
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SetValid(EFalse); |
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} |
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/** |
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Set page starting media address, invalidate page content. |
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@param aPos the new media address to be set. |
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*/ |
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void TDynamicDirCachePage::SetPos(TInt64 aPos) |
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{ |
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iStartMedPos = aPos; |
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SetValid(EFalse); |
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return; |
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} |
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//======================================================================== |
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/** |
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Calculate the page starting media address, aligned with page size. |
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@param aPos the media address to be aligned. |
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@return TInt64 the aligned media address. |
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*/ |
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TInt64 CDynamicDirCache::CalcPageStartPos(TInt64 aPos) const |
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{ |
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ASSERT(aPos >= iCacheBasePos); |
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return (((aPos - iCacheBasePos) >> iPageSizeLog2) << iPageSizeLog2) + iCacheBasePos; |
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} |
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/** |
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Check if the cache has reached its limited page number. |
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@return TBool ETrue if cache is full, otherwise EFalse. |
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*/ |
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TBool CDynamicDirCache::CacheIsFull() const |
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{ |
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// active page, locked page and unlocked page |
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return (iLockedQCount + iUnlockedQCount >= iMaxSizeInPages); |
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} |
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/** |
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Return the maximum allowed page number of the cache. |
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*/ |
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TUint32 CDynamicDirCache::MaxCacheSizeInPages() const |
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{ |
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return iMaxSizeInPages; |
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} |
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#endif //SL_DIR_CACHE_INL |
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