122 lines
3.4 KiB
C++
122 lines
3.4 KiB
C++
//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 2000.
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//
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// File: CIRCSTOB.HXX
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//
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// Contents: DownLevel Recoverable Storage Object.
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//
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// Classes: CiRcovStorageObj
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//
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// History: 04-Feb-1994 SrikantS Created.
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//
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//----------------------------------------------------------------------------
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#pragma once
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#include <prcstob.hxx>
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#include <mmstrm.hxx>
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#include <cistore.hxx>
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//+---------------------------------------------------------------------------
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//
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// Class: CiRcovStorageObj ()
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//
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// Purpose: Recoverable Storage Object implementation for the downlevel
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// content index.
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//
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// History: 2-10-94 srikants Created
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// 2-13-98 kitmanh Added fReadOnly for CiRcovStorageObj
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// constructor
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// 2-17-98 kitmanh Added private member _fIsReadOnly
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// 27-Oct-98 KLam Added cbDiskSpaceToLeave to constructor
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// Added private member _cbDiskSpaceToLeave
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//
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// Notes:
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//
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//----------------------------------------------------------------------------
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class CiRcovStorageObj : public PRcovStorageObj
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{
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public:
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CiRcovStorageObj( CiStorage & storage,
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WCHAR * wcsHdr,
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WCHAR * wcsCopy1,
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WCHAR * wcsCopy2,
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ULONG cbDiskSpaceToLeave,
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BOOL fReadOnly);
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virtual ~CiRcovStorageObj();
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void InithdrStrm() { _hdrStrm.InitFIsReadOnly( _fIsReadOnly ); }
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void Open( CRcovStorageHdr::DataCopyNum n, BOOL fWrite );
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void Close( CRcovStorageHdr::DataCopyNum n );
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PMmStream & GetMmStream( CRcovStorageHdr::DataCopyNum n )
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{
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return *_apMmStrm[n];
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}
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BOOL IsOpen( CRcovStorageHdr::DataCopyNum n )
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{
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return _apMmStrm[n] != NULL;
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}
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CMmStreamBuf & GetMmStreamBuf( CRcovStorageHdr::DataCopyNum n )
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{
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Win4Assert( ( CRcovStorageHdr::idxOne == n ) ||
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( CRcovStorageHdr::idxTwo == n ) );
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if ( CRcovStorageHdr::idxOne == n )
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return _sbufOne;
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else
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return _sbufTwo;
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}
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BOOL IsMapped( CRcovStorageHdr::DataCopyNum n )
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{
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return 0 != GetMmStreamBuf( n ).Get();
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}
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void AcquireAccess( ExclusionType et ) { }
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void ReleaseAccess() { }
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void ReadHeader();
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void WriteHeader();
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BOOL IsReadOnly() { return _fIsReadOnly; }
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private:
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PMmStream * QueryMmStream( CRcovStorageHdr::DataCopyNum n, BOOL fWritable );
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WCHAR * _wcsCopy1;
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WCHAR * _wcsCopy2; // Path names of the copy 1 and copy 2
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// objects.
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CMmStream _hdrStrm;
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CMmStreamBuf _hdrSbuf; // Memory mapped stream and buffer for the
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// header.
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// Memory mapped stream buffers for the
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// two copies.
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// These two couldn't be an array of unwindable objects due to
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// a compiler bug. It's probably fixed by now.
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CMmStreamBuf _sbufOne;
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CMmStreamBuf _sbufTwo;
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PMmStream * _apMmStrm[CRcovStorageHdr::NUMCOPIES];
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// Array of the two copies of memory
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// mapped streams.
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PStorage & _storage;
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ULONG _cbDiskSpaceToLeave;
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BOOL _fIsReadOnly;
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};
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