chxkeepalive.h
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef CHXKEEPALIVE_H
- #define CHXKEEPALIVE_H
- #include "hxresult.h"
- #include "hxcom.h"
- class CHXKeepAliveImp;
- _INTERFACE IHXScheduler;
- _INTERFACE IHXCallback;
- /*
- * CHXKeepAlive
- * This object implements basic keepalive functionallity. The object
- * is initialized with a IHXScheduler, a keepalive timeout, and a keepalive
- * callback. Anytime that activity occurs, OnActivity() should be called.
- * If a timeout interval goes by without receiving an OnActivity() call,
- * this object calls the keepalive callback passed in the Init() call.
- */
- class CHXKeepAlive
- {
- public:
- CHXKeepAlive();
- ~CHXKeepAlive();
-
- HX_RESULT Init(IHXScheduler* pSched,
- UINT32 timeoutMS,
- IHXCallback* pKeepAliveCB);
- void OnActivity(); // Called when any activity has occured
- void reset(); // Clears the state of this object
- private:
- CHXKeepAliveImp* m_pImp;
- };
- #endif /* CHXKEEPALIVE_H */