Leaked source code of windows server 2003
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89 lines
2.1 KiB

//+---------------------------------------------------------------------------
//
// Microsoft Windows
// Copyright (C) Microsoft Corporation, 1997-1998.
//
// File: usnlist.hxx
//
// Contents: List of usn flush info
//
// History: 07-May-97 SitaramR Created
//
//----------------------------------------------------------------------------
#pragma once
#include <usninfo.hxx>
//+-------------------------------------------------------------------------
//
// Class: CUsnFlushInfoList
//
// Purpose: List of usn flush info
//
// History: 07-May-97 SitaramR Created
//
//--------------------------------------------------------------------------
class CUsnFlushInfoList
{
public:
CUsnFlushInfoList() {}
void SetUsns( ULONG cEntries,
USN_FLUSH_INFO const * const * ppUsnEntries )
{
//
// Make a copy of usn entries
//
_aUsnFlushInfo.Clear();
for ( unsigned i=0; i<cEntries; i++ )
{
XPtr<CUsnFlushInfo> xInfo( new CUsnFlushInfo( ppUsnEntries[i]->volumeId,
ppUsnEntries[i]->usnHighest ) );
_aUsnFlushInfo.Add( xInfo.GetPointer(), i );
xInfo.Acquire();
}
}
USN GetUsn( VOLUMEID volId )
{
//
// Search for volumeId in the list of usn entries
//
for ( unsigned i=0; i<_aUsnFlushInfo.Count(); i++ )
{
if ( _aUsnFlushInfo[i]->VolumeId() == volId )
return _aUsnFlushInfo[i]->UsnHighest();
}
//
// Not found, so return an usn of 0
//
return 0;
}
ULONG Count()
{
return _aUsnFlushInfo.Count();
}
CUsnFlushInfo *Get( unsigned index )
{
return _aUsnFlushInfo.Get( index );
}
void Add( CUsnFlushInfo * pInfo, unsigned i )
{
_aUsnFlushInfo.Add( pInfo, i );
}
private:
CCountedDynArray<CUsnFlushInfo> _aUsnFlushInfo;
};