3eaf791406
git-svn-id: https://svn.code.sf.net/p/flaim/code/trunk@213 0109f412-320b-0410-ab79-c3e0c5ffbbe6
165 lines
3.8 KiB
C++
165 lines
3.8 KiB
C++
//-------------------------------------------------------------------------
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// Desc: Extended cache manager structures.
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// Tabs: 3
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//
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// Copyright (c) 2001-2006 Novell, Inc. All Rights Reserved.
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of version 2 of the GNU General Public
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// License as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, contact Novell, Inc.
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//
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// To contact Novell about this file by physical or electronic mail,
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// you may find current contact information at www.novell.com
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//
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// $Id: ecache.h 12245 2006-01-19 14:29:51 -0700 (Thu, 19 Jan 2006) dsanders $
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//-------------------------------------------------------------------------
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#ifndef ECACHE_H
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#define ECACHE_H
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#include "fpackon.h"
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// IMPORTANT NOTE: No other include files should follow this one except
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// for fpackoff.h
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typedef FLMUINT64 ESMADDR64;
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// Prototypes
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#ifdef FLM_NLM
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#pragma pack(push, 1)
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#endif
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typedef struct ESMQueryInfo
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{
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FLMUINT64 ui64TotalExtendedMemory;
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FLMUINT64 ui64RemainingExtendedMemory;
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FLMUINT32 ui32TotalMemoryBelow4Gig;
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} ESMQueryInfo;
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#ifdef FLM_NLM
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#pragma pack(pop)
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#endif
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typedef FLMUINT (* ESM_ALLOC_FUNC)(
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FLMUINT64 size,
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FLMUINT options,
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ESMADDR64 * esmAddress);
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typedef FLMUINT (* ESM_FREE_FUNC)(
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ESMADDR64 esmAddress);
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typedef FLMUINT (* ESM_QUERY_FUNC)(
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FLMUINT32 ui32BufferSize,
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ESMQueryInfo * pBuffer);
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typedef FLMUINT (* ESM_ALLOC_WIN_FUNC)(
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FLMUINT32 ui32Size,
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FLMUINT32 * pui32LogicalAddress,
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FLMUINT32 ui32Caller);
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typedef FLMUINT (* ESM_FREE_WIN_FUNC)(
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FLMUINT32 ui32LogicalAddress,
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FLMUINT32 ui32Caller);
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typedef FLMUINT (* ESM_MAP_MEM_FUNC)(
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FLMUINT32 ui32WindowAddress,
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ESMADDR64 esmAddress,
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FLMUINT32 ui32Size);
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typedef struct ECACHE_HDR
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{
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ESMADDR64 esmAddr;
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FLMUINT uiStartBlkAddr;
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} ECACHE_HDR;
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/****************************************************************************
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Desc: Class which provides database caching in extended server memory
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****************************************************************************/
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class FlmECache : public F_Base
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{
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public:
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// Constructor and Destructor
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FlmECache();
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virtual ~FlmECache();
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// Setup
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FLMBOOL setupECache(
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FLMUINT uiBlockSize,
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FLMUINT uiMaxFileSize);
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// Storage methods
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void putBlock(
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FLMUINT uiBlockAddr,
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FLMBYTE * pucBlock,
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FLMBOOL bCalcChecksum = FALSE);
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void invalidateBlock(
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FLMUINT uiBlockAddr);
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// Retrieval methods
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RCODE getBlock(
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FLMUINT uiBlockAddr,
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FLMBYTE * pucBlock,
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FLMUINT uiLength);
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// Statistics
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void getStats(
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FLM_ECACHE_USAGE * pUsage,
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FLMBOOL bAddToCurrent = FALSE);
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FINLINE FLMUINT getPageSize( void)
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{
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return( m_uiPageSize);
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}
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private:
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void cleanup( void);
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void getPosition(
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FLMUINT uiBlockAddr,
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FLMUINT * puiBlkOffsetInPage,
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FLMUINT * puiExpectedPageStartOffset,
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ECACHE_HDR ** ppECacheHdr);
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FLMBOOL mapToWindow(
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ECACHE_HDR * pHeader);
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FLMUINT m_uiDbBlockSize;
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F_MUTEX m_hMutex;
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ECACHE_HDR * m_pAllocTable;
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FLMUINT m_uiAllocTableSize;
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FLMUINT m_uiPageSize;
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void * m_pvWindow;
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FLMUINT64 m_ui64MappedESMAddr;
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FLMUINT64 m_ui64MaxFileSize;
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FLMUINT64 m_ui64BytesAllocated;
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FLMUINT64 m_ui64CacheHits;
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FLMUINT64 m_ui64CacheFaults;
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ESM_ALLOC_FUNC m_fnESMAlloc;
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ESM_FREE_FUNC m_fnESMFree;
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ESM_QUERY_FUNC m_fnESMQuery;
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ESM_ALLOC_WIN_FUNC m_fnESMAllocWindow;
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ESM_FREE_WIN_FUNC m_fnESMFreeWindow;
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ESM_MAP_MEM_FUNC m_fnESMMapMemory;
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};
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#include "fpackoff.h"
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#endif // ECACHE_H
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