--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wmdrm/wmdrmengine/wmdrmserver/server/src/slotdatacache.cpp	Thu Dec 17 08:52:27 2009 +0200
@@ -0,0 +1,187 @@
+/*
+* 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 "wmdrmserver.h"
+#include "slotdata.h"
+#include "slotdatacache.h"
+#include "wmdrmkeystorage.h"
+#include "wmdrmdb.h"
+
+#define _LOGGING_FILE L"wmdrmserver.txt"
+
+#include "flogger.h"
+#include "logfn.h"
+
+
+CSlotDataCache* CSlotDataCache::NewL( CWmDrmServer* aServer )
+    {
+    CSlotDataCache* self = new (ELeave) CSlotDataCache( aServer );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop();
+    return self;
+    }
+    
+void CSlotDataCache::ConstructL()
+    {
+    LOGFN( "CSlotDataCache::ConstructL" );
+#ifndef __WINSCW__    
+	iKeyStorage = CWmDrmKeyStorage::NewL();
+    if ( !iKeyStorage )
+        {
+        User::Leave( KErrNotSupported );
+        }
+#endif // __WINSCW__
+    iMaxCachedSlots = KDefaultMaxCachedSlots;
+    }
+    
+CSlotDataCache::CSlotDataCache(
+    CWmDrmServer* aServer):
+    iServer( aServer )
+    {
+    }
+
+CSlotDataCache::~CSlotDataCache()
+    {
+    iSlotCache.ResetAndDestroy();
+    iSlotCache.Close();
+    delete iKeyStorage;
+    }
+
+CSlotData* CSlotDataCache::GetSlotDataL( 
+    const TDesC8& aStore,
+    const TDesC8& aNamespace,
+    const TDesC8& aHashKey,
+    const TDesC8& aUniqueKey )
+    {
+    CSlotData* r = NULL;
+    TInt i = 0;
+    
+    LOGFN( "CSlotDataCache::GetSlotDataL" );
+    LOG( aNamespace );
+    LOG( aHashKey );
+    LOG( aUniqueKey );
+    for ( i = 0; r == NULL && i < iSlotCache.Count(); i++ )
+        {
+        CSlotData* data = iSlotCache[i];
+        if ( /*iSlotCache[i]->iStore == aStore &&*/
+             iSlotCache[i]->iNamespace == aNamespace &&
+             iSlotCache[i]->iHashKey == aHashKey && 
+             iSlotCache[i]->iUniqueKey == aUniqueKey )
+            {
+            r = iSlotCache[i];
+            Claim( r );
+            }
+        }
+    if ( r == NULL )
+        {
+        Cleanup();
+        r = CSlotData::NewL( iServer, 
+                             aStore, 
+                             aNamespace, 
+                             aHashKey, 
+                             aUniqueKey );
+        CleanupStack::PushL( r );
+        iSlotCache.AppendL( r );
+        Claim( r );
+        CleanupStack::Pop( r );
+        }
+    return r;
+    }
+
+void CSlotDataCache::Claim( CSlotData* aSlot )
+    {
+    LOGFN( "CSlotDataCache::ClaimL" );
+    aSlot->iReferences++;
+    }
+
+TInt CSlotDataCache::Delete( CSlotData* aSlot )
+    {
+    TInt r = KErrNone;
+    LOGFNR( "CSlotDataCache::Delete", r );
+    aSlot->CloseFile();
+    TRAP( r, iServer->Db()->DeleteRecordL( aSlot->iStore,
+                                           aSlot->iNamespace,
+                                           aSlot->iHashKey,
+                                           aSlot->iUniqueKey  ) );
+    return r;
+	}
+    
+void CSlotDataCache::Release( CSlotData* aSlot )
+    {
+    TInt i = 0;
+    
+    LOGFN( "CSlotDataCache::ReleaseL" );
+    while ( i < iSlotCache.Count() && iSlotCache[i] != aSlot )
+        {
+        i++;
+        }
+    if ( i < iSlotCache.Count() )
+        {
+        iSlotCache[i]->iReferences--;
+        }
+    }
+
+void CSlotDataCache::Cleanup()
+    {
+    TInt i = 0;
+    TInt minReferencesCount = 0;
+    TInt minReferencesIndex = 0;
+    
+    LOGFN( "CSlotDataCache::CleanupL" );
+    LOG3( "Used: %d, max: %d", iSlotCache.Count(), iMaxCachedSlots );
+    
+    if ( iSlotCache.Count() >= iMaxCachedSlots )
+        {
+        minReferencesCount = iSlotCache[minReferencesIndex]->iReferences;
+        
+        while ( iSlotCache.Count() >= iMaxCachedSlots && i < iMaxCachedSlots ) 
+            {
+            if ( iSlotCache[i]->iReferences == 0 )
+                {
+                LOG2( "Releasing %d", i );
+                delete iSlotCache[i];
+                iSlotCache.Remove( i );
+                }
+            else if ( iSlotCache[i]->iReferences < minReferencesCount )
+                {
+                minReferencesCount = iSlotCache[i]->iReferences;
+                minReferencesIndex = i;
+                }
+            i++;
+            }
+    
+        if ( iSlotCache.Count() >= iMaxCachedSlots ) 
+            {
+            LOG2( "Force Releasing %d", minReferencesIndex );
+            delete iSlotCache[minReferencesIndex];
+            iSlotCache.Remove( minReferencesIndex );
+            }
+        }
+    }
+    
+void CSlotDataCache::FlushL()
+    {
+    TInt i;
+    
+    LOGFN( "CSlotDataCache::FlushL" );
+    for ( i = 0; i < iSlotCache.Count(); i++ )
+        {
+        iSlotCache[i]->FlushL();
+        }
+    }