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/*
Miranda NG: the free IM client for Microsoft* Windows*
Copyright 2012 Miranda NG project,
all portions of this codebase are copyrighted to the people
listed in contributors.txt.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <m_db_int.h>
#include "..\..\Db3x_mmap\src\database.h"
#include "..\..\Db3x_mmap\src\dbintf.h"
#define CACHESECTIONSIZE 4096
#define CACHESECTIONCOUNT 32
#define SETTINGSGROUPOFSCOUNT 32
struct CDb3x : public CDb3Base
{
CDb3x(const TCHAR* tszFileName);
~CDb3x();
__inline HANDLE getFile() const { return m_hDbFile; }
protected:
virtual DWORD GetSettingsGroupOfsByModuleNameOfs(DBContact *dbc,DWORD ofsContact,DWORD ofsModuleName);
virtual void DBMoveChunk(DWORD ofsDest, DWORD ofsSource, int bytes);
virtual PBYTE DBRead(DWORD ofs, int bytesRequired, int *bytesAvail);
virtual void DBWrite(DWORD ofs, PVOID pData, int bytes);
virtual void DBFill(DWORD ofs, int bytes);
virtual void DBFlush(int setting);
virtual int InitCache(void);
PBYTE m_pDbCache;
DWORD m_lastUseCounter;
struct DBCacheSectionInfo
{
DWORD ofsBase;
DWORD lastUsed;
}
cacheSectionInfo[CACHESECTIONCOUNT];
int nextSGOCacheEntry;
struct SettingsGroupOfsCacheEntry {
DWORD ofsContact;
DWORD ofsModuleName;
DWORD ofsSettingsGroup;
}
settingsGroupOfsCache[SETTINGSGROUPOFSCOUNT];
int FindSectionForOffset(const DWORD ofs);
int FindLRUSection(void);
void LoadSection(const int i,DWORD ofs);
void MoveSection(int *sectId,int dest);
void InvalidateSettingsGroupOfsCacheEntry(DWORD ofsSettingsGroup);
};
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