usbmgmt/usbmgr/device/classdrivers/acm/classimplementation/ecacm/inc/ActiveDataAvailableNotifier.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/usbmgmt/usbmgr/device/classdrivers/acm/classimplementation/ecacm/inc/ActiveDataAvailableNotifier.h Tue Feb 02 02:02:59 2010 +0200
@@ -0,0 +1,60 @@
+/*
+* Copyright (c) 2007-2009 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:
+*
+*/
+
+#ifndef __ACTIVEDATAAVAILABLENOTIFIER_H__
+#define __ACTIVEDATAAVAILABLENOTIFIER_H__
+
+#include <e32base.h>
+#include <d32usbc.h>
+
+class RDevUsbcClient;
+class MNotifyDataAvailableObserver;
+
+NONSHARABLE_CLASS(CActiveDataAvailableNotifier) : public CActive
+/**
+ * Active object used to notify the parent when there is data available
+ * to be read from the LDD. Since the LDD does not support this functionality
+ * directly RDevUsbcClient::ReadOneOrMore() is used instead, specifying a
+ * zero byte read into a descriptor which is owned by the class.
+ */
+ {
+public:
+ static CActiveDataAvailableNotifier* NewL(MNotifyDataAvailableObserver& aParent,
+ RDevUsbcClient& aLdd, TEndpointNumber aEndpoint);
+ ~CActiveDataAvailableNotifier();
+
+public:
+ void NotifyDataAvailable();
+
+private:
+ CActiveDataAvailableNotifier(MNotifyDataAvailableObserver& aParent,
+ RDevUsbcClient& aLdd, TEndpointNumber aEndpoint);
+
+private: // from CActive
+ virtual void DoCancel();
+ virtual void RunL();
+
+private: // unowned
+ MNotifyDataAvailableObserver& iParent;
+ RDevUsbcClient& iLdd;
+
+private: // owned
+ TEndpointNumber iEndpoint;
+ TBuf8<1> iUnusedBuf; // passed to the LDD in order to carry out the zero byte read (length must be > 0)
+ };
+
+#endif // __ACTIVEDATAAVAILABLENOTIFIER_H__