| author | sl@SLION-WIN7.fritz.box |
| Fri, 15 Jun 2012 03:10:57 +0200 | |
| changeset 0 | bde4ae8d615e |
| permissions | -rw-r--r-- |
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// Copyright (c) 2006-2009 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 "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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// |
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|
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#include "CacheBase.h" |
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|
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/** |
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Constructor |
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Initialized the iCachedItems array with granularity 8 and an offset to iHandle in TCacheEntry, |
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which will be used to find specific entries later. |
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*/ |
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CCacheBase::CCacheBase() : iCachedItems(8, _FOFF(TCacheEntry, iHandle)) |
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{
|
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|
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} |
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|
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CCacheBase::~CCacheBase() |
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{
|
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for(TInt i = 0; i < iCachedItems.Count(); i++) |
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{
|
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delete iCachedItems[i].iCachedItem; |
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iCachedItems[i].iCachedItem = NULL; |
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} |
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|
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iCachedItems.Reset(); |
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} |
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|
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/** |
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Begins an update of the cache. |
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*/ |
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void CCacheBase::BeginUpdate() |
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{
|
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// Sets all cached items to not used |
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for(TInt i = 0; i < iCachedItems.Count(); i++) |
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{
|
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iCachedItems[i].iIsUsed = EFalse; |
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} |
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} |
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|
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/** |
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End an update of the cache. |
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*/ |
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void CCacheBase::EndUpdate() |
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{
|
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// Removes all cached items that are not used |
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for(TInt i = 0; i < iCachedItems.Count(); i++) |
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{
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if(!iCachedItems[i].iIsUsed) |
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{
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delete iCachedItems[i].iCachedItem; |
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iCachedItems.Remove(i--); |
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} |
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} |
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} |
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|
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/** |
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Returns an item from the cache corresponding to a specific handle. |
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|
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@param aHandle A handle to match against an item in the cache. |
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@return The item that matches the handle provided as a parameter. |
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*/ |
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const CBase* CCacheBase::Resolve(TInt aHandle) |
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{
|
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TCacheEntry entry(aHandle); |
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TInt index = iCachedItems.FindInUnsignedKeyOrder(entry); |
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|
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if(index != KErrNotFound) |
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return iCachedItems[index].iCachedItem; |
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else |
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return NULL; |
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} |
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|
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