diff -r 000000000000 -r 9cfd9a3ee49c locationrequestmgmt/locationserver/src/EPos_CPosCallbackTimer.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/locationrequestmgmt/locationserver/src/EPos_CPosCallbackTimer.cpp	Tue Feb 02 01:50:39 2010 +0200
@@ -0,0 +1,155 @@
+// Copyright (c) 2005-2009 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:
+//
+
+
+
+// INCLUDE FILES
+#include <e32base.h>
+#include  "EPos_CPosCallbackTimer.h"
+
+// ================= MEMBER FUNCTIONS =======================
+
+/**
+ * C++ default constructor.
+ * @param aCallBack 
+ */
+CPosCallbackTimer::CPosCallbackTimer(TCallBack& aCallBack)
+:   CTimer(EPriorityStandard),
+    iTimeoutCallBack(aCallBack)    
+    {
+    CActiveScheduler::Add(this);
+    }
+/**
+ * Symbian constructor.
+ */
+void CPosCallbackTimer::ConstructL()
+    {
+    CTimer::ConstructL();
+    }
+
+/**
+ * Two-phased constructor.
+ * @param aCallBack 
+ */
+CPosCallbackTimer* CPosCallbackTimer::NewL(TCallBack& aCallBack)
+    {
+    CPosCallbackTimer* self = new (ELeave) CPosCallbackTimer(aCallBack);
+    CleanupStack::PushL(self);
+    self->ConstructL();
+    CleanupStack::Pop(self);
+    return self;
+    }
+
+/**
+ * Destructor.
+ */
+CPosCallbackTimer::~CPosCallbackTimer()
+    {
+    }
+
+/**
+ * Start the callback timer. If there is already a timer running, it
+ * will be restarted.
+ *
+ * @param aTimeout The timeout.
+ */
+void CPosCallbackTimer::StartTimer(const TTimeIntervalMicroSeconds& aTimeOut)
+    {    
+    Cancel();    
+
+    // MaxInt64 = MaxInt32 * MaxUint32
+    // up to MaxUint32 internal rounds by MaxInt32 are possible before final 
+    // timeout of up to MaxInt32
+
+    iNumInternalRounds = static_cast<TUint32>(aTimeOut.Int64() / KMaxTInt32);
+    iTimeOut = static_cast<TInt32>(aTimeOut.Int64() % KMaxTInt32);
+    // iTimeOut can be also zero. It is catered for in NextRound
+
+    NextRound();
+    }
+
+/**
+ *  Activates timer for next period: full round (KMaxTInt32) or 
+ *  small delay stored in iTimeOut
+ */
+TBool CPosCallbackTimer::NextRound()
+    {
+    if (iNumInternalRounds > 0)
+        {
+        After(KMaxTInt32);
+        iNumInternalRounds--;
+        return ETrue;           // timer not yet completed
+        }
+    else if (iTimeOut.Int() > 0)
+        {
+        After(iTimeOut);
+        iTimeOut = 0;           // timer will complete on next round
+        return ETrue;           // timer not yet completed
+        }
+    else
+        {
+        return EFalse;          // timer completed
+        }
+    }
+
+/**
+ * From CActive
+ */
+void CPosCallbackTimer::RunL()
+    {    
+    if (!NextRound())           // timer completed?
+        {
+        if (iStatus.Int() == KErrNone)
+            {
+            iStatus = KErrTimedOut;
+            }
+        iTimeoutCallBack.CallBack();
+        }    
+    }
+
+/**
+ * From CActive
+ */
+TInt CPosCallbackTimer::RunError(TInt /*aError*/)
+    {
+    return KErrNone;
+    }
+
+/**
+ * Returns the request status of this callback timer.
+ * 
+ * @return Returns KErrTimedOut if timer elapsed or KErrCancel
+ *         if timer was cancelled. Otherwise any of the system wide
+ *         error codes.
+ */
+TInt CPosCallbackTimer::Status()
+    {
+    return iStatus.Int();
+    }
+
+void CPosCallbackTimer::ExtendTimeout(const TTimeIntervalMicroSeconds& aAdditionalTime)
+	{
+	if(!IsActive())
+		{
+		return;
+		}
+	//We do not need to cancel here. Just correct the iNumInternalRounds and iTimeOut
+	
+	TInt64 timeout = iNumInternalRounds * KMaxTInt32 + iTimeOut.Int() + aAdditionalTime.Int64();
+	iNumInternalRounds = static_cast<TUint32>(timeout / KMaxTInt32);
+	iTimeOut = static_cast<TInt32>(timeout % KMaxTInt32);
+	}
+
+//  End of File