VMAllocator.h

Go to the documentation of this file.
00001 /*
00002 // $Id: //open/dev/fennel/cache/VMAllocator.h#13 $
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_VMAllocator_Included
00025 #define Fennel_VMAllocator_Included
00026 
00027 #include "fennel/cache/CacheAllocator.h"
00028 
00029 FENNEL_BEGIN_NAMESPACE
00030 
00035 class FENNEL_CACHE_EXPORT VMAllocator
00036     : public CacheAllocator
00037 {
00038     size_t cbAlloc;
00039     size_t nAllocs;
00040     bool bLockPages;
00041 
00042 public:
00053     explicit VMAllocator(size_t cbAlloc,size_t nLocked = 0);
00054 
00055     virtual ~VMAllocator();
00056 
00057 // ----------------------------------------------------------------------
00058 // Implementation of CacheAllocator interface
00059 // ----------------------------------------------------------------------
00060     virtual void *allocate(int *pErrorCode = NULL);
00061     virtual int deallocate(void *pMem, int *pErrorCode = NULL);
00062     virtual int setProtection(
00063         void *pMem, uint cb, bool readOnly, int *pErrorCode = NULL);
00064     virtual size_t getBytesAllocated() const;
00065 };
00066 
00067 FENNEL_END_NAMESPACE
00068 
00069 #endif
00070 
00071 // End VMAllocator.h

Generated on Mon Jun 22 04:00:13 2009 for Fennel by  doxygen 1.5.1