MappedPageListener.h

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00001 /*
00002 // $Id: //open/dev/fennel/cache/MappedPageListener.h#12 $
00003 // Fennel is a library of data storage and processing components.
00004 // Copyright (C) 2005-2009 The Eigenbase Project
00005 // Copyright (C) 2005-2009 SQLstream, Inc.
00006 // Copyright (C) 2005-2009 LucidEra, Inc.
00007 // Portions Copyright (C) 1999-2009 John V. Sichi
00008 //
00009 // This program is free software; you can redistribute it and/or modify it
00010 // under the terms of the GNU General Public License as published by the Free
00011 // Software Foundation; either version 2 of the License, or (at your option)
00012 // any later version approved by The Eigenbase Project.
00013 //
00014 // This program is distributed in the hope that it will be useful,
00015 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00016 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00017 // GNU General Public License for more details.
00018 //
00019 // You should have received a copy of the GNU General Public License
00020 // along with this program; if not, write to the Free Software
00021 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00022 */
00023 
00024 #ifndef Fennel_MappedPageListener_Included
00025 #define Fennel_MappedPageListener_Included
00026 
00027 FENNEL_BEGIN_NAMESPACE
00028 
00029 class CachePage;
00030 
00037 class FENNEL_CACHE_EXPORT MappedPageListener
00038 {
00039 public:
00040     virtual ~MappedPageListener();
00041 
00050     virtual void notifyPageMap(CachePage &page);
00051 
00059     virtual void notifyPageUnmap(CachePage &page);
00060 
00068     virtual void notifyAfterPageRead(CachePage &page);
00069 
00085     virtual void notifyPageDirty(CachePage &page,bool bDataValid);
00086 
00094     virtual bool canFlushPage(CachePage &page);
00095 
00105     virtual void notifyBeforePageFlush(CachePage &page);
00106 
00114     virtual void notifyAfterPageFlush(CachePage &page);
00115 
00131     virtual MappedPageListener *notifyAfterPageCheckpointFlush(CachePage &page);
00132 
00139     virtual MappedPageListener *getTracingListener() = 0;
00140 };
00141 
00142 FENNEL_END_NAMESPACE
00143 
00144 #endif
00145 
00146 // End MappedPageListener.h

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