--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/uiacceltk/hitchcock/plugins/alfcrpplugin/src/alfsynchronizer.cpp	Mon Feb 22 17:57:49 2010 +0200
@@ -0,0 +1,153 @@
+/*
+* Copyright (c) 2010 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:  AlfSynchronizer waits for synchronization to complete
+*
+*/
+
+
+#include "alfsynchronizer.h"
+#include "alfrenderstageutils.h"
+
+// Timeout in microseconds - 500 ms.
+const TInt KAlfSyncTimeout = 500000;
+
+// --------------------------------------------------------------------------
+// CAlfSynchronizer::NewL
+// --------------------------------------------------------------------------
+//    
+CAlfSynchronizer* CAlfSynchronizer::NewL()
+    {
+    CAlfSynchronizer* self = new (ELeave) CAlfSynchronizer;
+    CleanupStack::PushL(self);
+    self->ConstructL();
+    CleanupStack::Pop(self);
+    return self;
+    }
+    
+// --------------------------------------------------------------------------
+// CAlfSynchronizer::~CAlfSynchronizer
+// --------------------------------------------------------------------------
+//
+CAlfSynchronizer::~CAlfSynchronizer()
+    {
+    Cancel();
+    
+    iProperty.Close();
+    
+    delete iWait;
+    delete iTimeout;
+    }
+
+// --------------------------------------------------------------------------
+// CAlfSynchronizer::Start
+// --------------------------------------------------------------------------
+//
+void CAlfSynchronizer::Start(TInt aId)
+    {
+    iProperty.Subscribe( iStatus );
+    SetActive();
+    
+    TInt value = 0;
+    iProperty.Get(value);
+    
+    if ( value != aId )
+        {
+        // Launch timeout AO in case there happens to be deadlock in coretoolkit etc.
+        iTimeout->Start( KAlfSyncTimeout, KAlfSyncTimeout, 
+            TCallBack( CallbackSyncTimeout, this ) );
+
+        // Start wait
+        iSynchId = aId;
+        iWait->Start();
+        }
+    }
+    
+// --------------------------------------------------------------------------
+// CAlfSynchronizer::RunL
+// --------------------------------------------------------------------------
+//
+void CAlfSynchronizer::RunL()
+    {
+    if ( !iAsyncStopDone && iStatus.Int() == KErrNone )
+        {
+        iProperty.Subscribe( iStatus );
+        SetActive();
+        }
+    
+    TInt value = 0;
+    iProperty.Get(value);
+        
+    if ( !iAsyncStopDone && value == iSynchId )
+        {
+        iWait->AsyncStop();
+        iAsyncStopDone = ETrue;
+        }
+    }
+
+// --------------------------------------------------------------------------
+// CAlfSynchronizer::CallbackSyncTimeout
+// --------------------------------------------------------------------------
+//
+TInt CAlfSynchronizer::CallbackSyncTimeout( TAny* aPtr )
+    {
+    ((CAlfSynchronizer*)aPtr)->DoCallbackSyncTimeout();
+    return KErrNone;
+    }
+
+// --------------------------------------------------------------------------
+// CAlfSynchronizer::DoCallbackSyncTimeout
+// --------------------------------------------------------------------------
+//
+void CAlfSynchronizer::DoCallbackSyncTimeout()
+    {        
+    iTimeout->Cancel();
+    
+    if (!iAsyncStopDone)
+        {
+        iWait->AsyncStop();
+        iAsyncStopDone = ETrue;
+        }
+    }
+
+// --------------------------------------------------------------------------
+// CAlfSynchronizer::DoCancel
+// --------------------------------------------------------------------------
+//
+void CAlfSynchronizer::DoCancel()
+    {
+    iProperty.Cancel();
+    }
+
+// --------------------------------------------------------------------------
+// CAlfSynchronizer::CAlfSynchronizer
+// --------------------------------------------------------------------------
+//
+CAlfSynchronizer::CAlfSynchronizer()
+    : CActive( EPriorityHigh )
+    {
+    CActiveScheduler::Add(this);
+    }
+
+// --------------------------------------------------------------------------
+// CAlfSynchronizer::ConstructL
+// --------------------------------------------------------------------------
+//
+void CAlfSynchronizer::ConstructL()
+    {
+    User::LeaveIfError( iProperty.Attach( KAlfPSUidSynchronizer, KAlfPSKeySynchronizer ) );
+
+    iWait = new (ELeave) CActiveSchedulerWait;
+    
+    iTimeout = CPeriodic::NewL( CActive::EPriorityHigh );
+    }