--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wmdrm/wmdrmengine/wmdrmserver/server/src/slotenumeratorcache.cpp	Thu Dec 17 08:52:27 2009 +0200
@@ -0,0 +1,219 @@
+/*
+* Copyright (c) 2007 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:  WMDRM Server implementation
+*
+*/
+
+
+#include "slotenumeratorcache.h"
+#include "enumeratordata.h"
+#include "wmdrmserver.h"
+
+#define _LOGGING_FILE L"wmdrmserver.txt"
+
+#include "flogger.h"
+#include "logfn.h"
+
+CSlotEnumeratorCache* CSlotEnumeratorCache::NewL( CWmDrmServer* aServer )
+    {
+    CSlotEnumeratorCache* self = new (ELeave) CSlotEnumeratorCache( aServer );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop();
+    return self;
+    }
+
+void CSlotEnumeratorCache::ConstructL()
+    {
+    LOGFN( "CSlotEnumeratorCache::ConstructL" );
+    iMaxCachedEnumerators = KDefaultMaxCachedEnumerators;
+    }
+    
+CSlotEnumeratorCache::CSlotEnumeratorCache(
+    CWmDrmServer* aServer):
+    iServer( aServer )
+    {
+    LOGFN( "CSlotEnumeratorCache::CSlotEnumeratorCache" );
+    }
+
+CSlotEnumeratorCache::~CSlotEnumeratorCache()
+    {
+    LOGFN( "CSlotEnumeratorCache::~CSlotEnumeratorCache" );
+    iEnumeratorCache.ResetAndDestroy();
+    iEnumeratorCache.Close();
+    }
+
+CEnumeratorData* CSlotEnumeratorCache::GetEnumeratorDataL(
+    const TDesC8& aStore,
+    const TDesC8& aNamespace,
+    const TDesC8& aHashKey )
+    {
+    CEnumeratorData* r = NULL;
+    TInt i = 0;
+    
+    LOGFN( "CSlotEnumeratorCache::GetEnumeratorDataL" );
+    LOG( aNamespace );
+    LOG( aHashKey );
+    for ( i = 0; r == NULL && i < iEnumeratorCache.Count(); i++ )
+        {
+        CEnumeratorData* data = iEnumeratorCache[i];
+        if ( /*data->iStore == aStore &&*/
+             data->iNamespace == aNamespace &&
+             data->iHashKey == aHashKey )
+            {
+            r = iEnumeratorCache[i];
+            Claim( r );
+            }
+        }
+    if ( r == NULL )
+        {
+        Cleanup();
+        r = CEnumeratorData::NewL( iServer, aStore, aNamespace, aHashKey );
+        CleanupStack::PushL( r );
+        iEnumeratorCache.AppendL( r );
+        Claim( r );
+        CleanupStack::Pop( r );
+        }
+    return r;
+    }
+
+void CSlotEnumeratorCache::Claim( CEnumeratorData* aData )
+    {
+    LOGFN( "CSlotEnumeratorCache::ClaimL" );
+    aData->iReferences++;
+    }
+
+void CSlotEnumeratorCache::Release( CEnumeratorData* aData )
+    {
+    LOGFN( "CSlotEnumeratorCache::ReleaseL" );
+    aData->iReferences--;
+    }
+
+TInt CSlotEnumeratorCache::AddEntryL(
+    const TDesC8& /*aStore*/,
+    const TDesC8& aNamespace,
+    const TDesC8& aHashKey,
+    const TDesC8& aUniqueKey )
+    {
+    TInt r = KErrNone;
+    TInt i;
+    CEnumeratorData* entry = NULL;
+    HBufC8* fileName;
+    
+    LOGFNR( "CSlotEnumeratorCache::AddEntryL", r );
+    LOG( aNamespace );
+    LOG( aHashKey );
+    LOG( aUniqueKey );
+    for ( i = 0; entry == NULL && i < iEnumeratorCache.Count(); i++ )
+        {
+        CEnumeratorData* data = iEnumeratorCache[i];
+        if ( /*data->iStore == aStore &&*/
+             data->iNamespace == aNamespace &&
+             data->iHashKey == aHashKey )
+            {
+            entry = iEnumeratorCache[i];
+            }
+        }
+    if ( entry != NULL )
+        {
+        i = 0;
+        while ( i < entry->iEntries.Count() && *entry->iEntries[i] != aUniqueKey )
+            {
+            i++;
+            }
+        if ( i == entry->iEntries.Count() )
+            {
+            fileName = aUniqueKey.AllocLC();
+            entry->iEntries.AppendL( fileName );
+            CleanupStack::Pop( fileName );
+            }
+        }
+    return r;
+    }
+
+TInt CSlotEnumeratorCache::DeleteEntryL(
+    const TDesC8& /*aStore*/,
+    const TDesC8& aNamespace,
+    const TDesC8& aHashKey,
+    const TDesC8& aUniqueKey )
+    {
+    TInt r = KErrNone;
+    TInt i;
+    CEnumeratorData* entry = NULL;
+    
+    LOGFNR( "CSlotEnumeratorCache::DeleteEntryL", r );
+    
+    for ( i = 0; entry == NULL && i < iEnumeratorCache.Count(); i++ )
+        {
+        CEnumeratorData* data = iEnumeratorCache[i];
+        if ( /*data->iStore == aStore &&*/
+             data->iNamespace == aNamespace &&
+             data->iHashKey == aHashKey )
+            {
+            entry = iEnumeratorCache[i];
+            }
+        }
+    if ( entry != NULL )
+        {
+        i = 0;
+        while ( i < entry->iEntries.Count() && *entry->iEntries[i] != aUniqueKey )
+            {
+            i++;
+            }
+        if ( i < entry->iEntries.Count() )
+            {
+            delete entry->iEntries[i];
+            entry->iEntries.Remove( i );
+            }
+        }
+    return r;
+    }
+
+void CSlotEnumeratorCache::Cleanup()
+    {
+    TInt i = 0;
+    TInt minReferencesCount = 0;
+    TInt minReferencesIndex = 0;
+    
+    LOGFN( "CSlotEnumeratorCache::CleanupL" );
+    LOG3( "Used: %d, max: %d", iEnumeratorCache.Count(), iMaxCachedEnumerators );
+    
+    if ( iEnumeratorCache.Count() >= iMaxCachedEnumerators )
+        {
+        minReferencesCount = iEnumeratorCache[minReferencesIndex]->iReferences;
+        
+        while ( iEnumeratorCache.Count() >= iMaxCachedEnumerators && i < iMaxCachedEnumerators ) 
+            {
+            if ( iEnumeratorCache[i]->iReferences == 0 )
+                {
+                LOG2( "Releasing %d", i );
+                delete iEnumeratorCache[i];
+                iEnumeratorCache.Remove( i );
+                }
+            else if ( iEnumeratorCache[i]->iReferences < minReferencesCount )
+                {
+                minReferencesCount = iEnumeratorCache[i]->iReferences;
+                minReferencesIndex = i;
+                }
+            i++;
+            }
+    
+        if ( iEnumeratorCache.Count() >= iMaxCachedEnumerators ) 
+            {
+            LOG2( "Force Releasing %d", minReferencesIndex );
+            delete iEnumeratorCache[minReferencesIndex];
+            iEnumeratorCache.Remove( minReferencesIndex );
+            }
+        }
+    }