192 lines
4.4 KiB
C++
192 lines
4.4 KiB
C++
|
//+-------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Microsoft Windows
|
||
|
|
// Copyright (C) Microsoft Corporation, 1992 - 1992.
|
||
|
|
//
|
||
|
|
// File: difat.hxx
|
||
|
|
//
|
||
|
|
// Contents: Double-indirect Fat class headers
|
||
|
|
//
|
||
|
|
// Classes: CDIFat
|
||
|
|
// CDIFatVector
|
||
|
|
//
|
||
|
|
// Functions:
|
||
|
|
//
|
||
|
|
// History: 02-Sep-92 PhilipLa Created.
|
||
|
|
//
|
||
|
|
//--------------------------------------------------------------------------
|
||
|
|
|
||
|
|
#ifndef __DIFAT_HXX__
|
||
|
|
#define __DIFAT_HXX__
|
||
|
|
|
||
|
|
//+-------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Class: CDIFat (dif)
|
||
|
|
//
|
||
|
|
// Purpose: Double Indirect Fat class for MSF
|
||
|
|
//
|
||
|
|
// Interface: See below.
|
||
|
|
//
|
||
|
|
// History: 11-May-92 PhilipLa Created.
|
||
|
|
//
|
||
|
|
//--------------------------------------------------------------------------
|
||
|
|
|
||
|
|
class CDIFat
|
||
|
|
{
|
||
|
|
|
||
|
|
public:
|
||
|
|
CDIFat();
|
||
|
|
#ifndef REF
|
||
|
|
CDIFat(CDIFat *pfatOld);
|
||
|
|
#endif //!REF
|
||
|
|
inline ~CDIFat();
|
||
|
|
|
||
|
|
VOID Empty(VOID);
|
||
|
|
|
||
|
|
|
||
|
|
SCODE GetFatSect(const FSINDEX oSect, SECT *psect);
|
||
|
|
SCODE SetFatSect(const FSINDEX oSect, const SECT sect);
|
||
|
|
|
||
|
|
SCODE GetSect(const FSINDEX oSect, SECT *psect);
|
||
|
|
|
||
|
|
SCODE Init(CMStream *pmsParent, const FSINDEX cFatSect);
|
||
|
|
#ifndef REF
|
||
|
|
inline void InitCopy(CDIFat *pfatOld);
|
||
|
|
#endif //!REF
|
||
|
|
SCODE InitConvert(CMStream *pmsParent, SECT sectMax);
|
||
|
|
SCODE InitNew(CMStream *pmsParent);
|
||
|
|
|
||
|
|
#ifndef REF
|
||
|
|
SCODE Lookup(const SECT sect, SECT *psectRet);
|
||
|
|
|
||
|
|
SCODE Fixup(CMStream * pmsShadow);
|
||
|
|
|
||
|
|
SCODE Remap(const FSINDEX oSect, SECT *psectReturn);
|
||
|
|
|
||
|
|
SCODE RemapSelf(VOID);
|
||
|
|
#endif //!REF
|
||
|
|
|
||
|
|
SCODE Flush(void);
|
||
|
|
|
||
|
|
#ifdef DIFAT_LOOKUP_ARRAY
|
||
|
|
inline void CacheUnmarkedSect(SECT sectNew, SECT sectMark, SECT sectFree);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
inline void SetParent(CMStream *pms);
|
||
|
|
private:
|
||
|
|
|
||
|
|
CFatVector _fv;
|
||
|
|
CBasedMStreamPtr _pmsParent;
|
||
|
|
FSINDEX _cfsTable;
|
||
|
|
|
||
|
|
#ifdef DIFAT_LOOKUP_ARRAY
|
||
|
|
#define DIFAT_ARRAY_SIZE 8
|
||
|
|
|
||
|
|
BOOL _fDoingFixup;
|
||
|
|
USHORT _cUnmarked;
|
||
|
|
SECT _sectUnmarked[DIFAT_ARRAY_SIZE];
|
||
|
|
SECT _sectMarkTo[DIFAT_ARRAY_SIZE];
|
||
|
|
SECT _sectFree[DIFAT_ARRAY_SIZE];
|
||
|
|
#endif
|
||
|
|
|
||
|
|
SCODE Resize(FSINDEX fsiSize);
|
||
|
|
|
||
|
|
inline VOID SectToPair(
|
||
|
|
SECT sect,
|
||
|
|
FSINDEX *pipfs,
|
||
|
|
FSOFFSET *pisect) const;
|
||
|
|
|
||
|
|
SECT PairToSect(FSINDEX ipfs, FSOFFSET isect) const;
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
//+-------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Method: CDIFat::~CDIFat, public
|
||
|
|
//
|
||
|
|
// Synopsis: CDIFat destructor
|
||
|
|
//
|
||
|
|
// History: 11-May-92 PhilipLa Created.
|
||
|
|
//
|
||
|
|
//--------------------------------------------------------------------------
|
||
|
|
|
||
|
|
inline CDIFat::~CDIFat()
|
||
|
|
{
|
||
|
|
msfDebugOut((DEB_ITRACE, "In CDIFat destructor\n"));
|
||
|
|
msfDebugOut((DEB_ITRACE, "Out CDIFat destructor\n"));
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifndef REF
|
||
|
|
//+-------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Method: CDIFat::InitCopy, public
|
||
|
|
//
|
||
|
|
// Synopsis: Init function for copying
|
||
|
|
//
|
||
|
|
// Arguments: [pfatOld] -- reference to CDIFat to be copied.
|
||
|
|
//
|
||
|
|
// Returns: S_OK if call completed OK.
|
||
|
|
//
|
||
|
|
// Algorithm: *Finish This*
|
||
|
|
//
|
||
|
|
// History: 11-May-92 PhilipLa Created.
|
||
|
|
//
|
||
|
|
// Notes:
|
||
|
|
//
|
||
|
|
//--------------------------------------------------------------------------
|
||
|
|
|
||
|
|
inline void CDIFat::InitCopy(CDIFat *pfatOld)
|
||
|
|
{
|
||
|
|
msfDebugOut((DEB_ITRACE, "In CDIFat copy constructor\n"));
|
||
|
|
|
||
|
|
_pmsParent = pfatOld->_pmsParent;
|
||
|
|
_cfsTable = pfatOld->_cfsTable;
|
||
|
|
|
||
|
|
_fv.InitCommon(pfatOld->_fv.GetSectBlock(), pfatOld->_fv.GetSectTable());
|
||
|
|
_fv.InitCopy(&pfatOld->_fv);
|
||
|
|
|
||
|
|
msfDebugOut((DEB_ITRACE, "Out CDIFat copy constructor\n"));
|
||
|
|
}
|
||
|
|
#endif //!REF
|
||
|
|
|
||
|
|
inline VOID CDIFat::SectToPair(FSINDEX sect, FSINDEX *pipfs, FSOFFSET *pisect) const
|
||
|
|
{
|
||
|
|
msfAssert(sect >= CSECTFAT);
|
||
|
|
|
||
|
|
sect = sect - CSECTFAT;
|
||
|
|
*pipfs = (FSINDEX)(sect / _fv.GetSectTable());
|
||
|
|
*pisect = (FSOFFSET)(sect % _fv.GetSectTable());
|
||
|
|
}
|
||
|
|
|
||
|
|
inline SECT CDIFat::PairToSect(FSINDEX ipfs, FSOFFSET isect) const
|
||
|
|
{
|
||
|
|
return ipfs * _fv.GetSectTable() + isect + CSECTFAT;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
inline void CDIFat::SetParent(CMStream *pms)
|
||
|
|
{
|
||
|
|
_pmsParent = P_TO_BP(CBasedMStreamPtr, pms);
|
||
|
|
_fv.SetParent(pms);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#ifdef DIFAT_LOOKUP_ARRAY
|
||
|
|
inline void CDIFat::CacheUnmarkedSect(SECT sectNew,
|
||
|
|
SECT sectMark,
|
||
|
|
SECT sectFree)
|
||
|
|
{
|
||
|
|
if (_cUnmarked < DIFAT_ARRAY_SIZE)
|
||
|
|
{
|
||
|
|
_sectUnmarked[_cUnmarked] = sectNew;
|
||
|
|
_sectMarkTo[_cUnmarked] = sectMark;
|
||
|
|
_sectFree[_cUnmarked] = sectFree;
|
||
|
|
}
|
||
|
|
_cUnmarked++;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif //__DIFAT_HXX__
|