Source code of Windows XP (NT5)
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//+---------------------------------------------------------------------------
//
// Copyright (C) Microsoft Corporation, 1991 - 1998
//
// File: pershash.hxx
//
// Contents: Abstract class for persistent hash table
//
// History: 07-May-97 SitaramR Created from strings.hxx
//
//----------------------------------------------------------------------------
#pragma once
#include <prpstmgr.hxx>
#include <dynstrm.hxx>
#include "chash.hxx"
//+-------------------------------------------------------------------------
//
// Class: CPersHash
//
// Purpose: Abstract class for persistent hash table
//
// History: 07-May-97 SitaramR Created
// 23-Feb-98 KitmanH Added a protected member,
// _fIsReadOnly
//
//--------------------------------------------------------------------------
class CPersHash{public:
CPersHash( CPropStoreManager & PropStoreMgr, BOOL fAggressiveGrowth ); virtual ~CPersHash();
virtual BOOL FastInit ( CiStorage * pStorage, ULONG version, BOOL fIsFileIdMap ); virtual void LongInit ( ULONG version, BOOL fDirtyShutdown ); virtual void Empty(); virtual void LokFlush(); void Shutdown ();
protected:
void GrowHashTable(); void GrowToSize( unsigned cElements );
//
// Error recovery.
//
virtual BOOL ReInit( ULONG version ); virtual void HashAll() = 0;
CPropStoreManager & _PropStoreMgr;// Property store manager
CDynStream * _pStreamHash; // Persistent hash stream
CWidHashTable _hTable; // Map fileids to wids (using hash stream)
BOOL _fIsOpen; // If TRUE, successfully opened
BOOL _fAbort; // To abort long operations
BOOL _fFullInit; // Set to TRUE if fully initialized.
BOOL _fIsReadOnly; // TRUE if the catalog is for read only
};
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