163 lines
4.4 KiB
C++
163 lines
4.4 KiB
C++
//+------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1997 - 1998.
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//
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// File: abortwid.cxx
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//
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// Contents: Tracks aborted wids that are not refiled
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//
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// Classes: CAbortedWids
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//
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// History: 24-Feb-97 SitaramR Created
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//
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// Notes: The data structure is a sequential array of aborted
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// wids. In push filtering, the number of aborted wids
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// should be small and hence the choice of sequential
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// array.
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//
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//-------------------------------------------------------------------
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#include <pch.cxx>
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#pragma hdrstop
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#include "abortwid.hxx"
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//+---------------------------------------------------------------------------
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//
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// Member: CAbortedWids::CAbortedWids
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//
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// Synopsis: Constructor
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//
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// History: 24-Feb-97 SitaramR Created
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//
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//----------------------------------------------------------------------------
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CAbortedWids::CAbortedWids()
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: _aAbortedWids( 0 )
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{
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}
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//+-------------------------------------------------------------------------
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//
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// Method: CAbortedWids::NoFailLokAddWid
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//
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// Synopsis: Adds wid to the aborted list
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//
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// Arguments: [wid] -- Workid to be added
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// [usn] -- USN of the notification
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//
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// History: 24-Feb-1997 SitaramR Created
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//
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//--------------------------------------------------------------------------
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void CAbortedWids::NoFailLokAddWid( WORKID wid, USN usn )
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{
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Win4Assert( wid != widInvalid );
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Win4Assert( usn > 0 );
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// Space for the wid was pre-allocated in Reserve(), since we can't
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// afford to take an exception here.
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Win4Assert( _aAbortedWids.Count() < _aAbortedWids.Size() );
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CAbortedWidEntry widEntry( wid, usn );
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_aAbortedWids.Add( widEntry, _aAbortedWids.Count() );
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} //NoFailLokAddWid
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//+-------------------------------------------------------------------------
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//
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// Method: CAbortedWids::LokRemoveWid
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//
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// Synopsis: Adds wid to the aborted list
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//
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// Arguments: [wid] -- Workid to be added
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// [usn] -- USN of the notification
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//
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// History: 24-Feb-1997 SitaramR Created
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//
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//--------------------------------------------------------------------------
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void CAbortedWids::LokRemoveWid( WORKID wid, USN usn )
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{
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Win4Assert( wid != widInvalid );
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Win4Assert( usn > 0 );
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unsigned count = _aAbortedWids.Count();
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for ( unsigned i=0; i<_aAbortedWids.Count(); i++ )
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{
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if ( _aAbortedWids.Get(i)._wid == wid &&
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_aAbortedWids.Get(i)._usn == usn )
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{
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_aAbortedWids.Remove(i);
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break;
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}
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}
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//
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// Check that the wid was found in the array. We
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// are using count, instead of _aAbortedWids.Count()
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// because the latter will decrease after the Remove().
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//
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Win4Assert( i < count );
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} //LokRemoveWid
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//+-------------------------------------------------------------------------
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//
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// Method: CAbortedWids::LokIsWidAborted
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//
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// Synopsis: Adds wid to the aborted list
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//
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// Arguments: [wid] -- Workid to be added
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// [usn] -- USN of the notification
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//
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// History: 24-Feb-1997 SitaramR Created
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//
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//--------------------------------------------------------------------------
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BOOL CAbortedWids::LokIsWidAborted( WORKID wid, USN usn )
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{
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Win4Assert( wid != widInvalid );
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//
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// Can be called in pull filtering where usn's can be zero, hence
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// no assertion on value of usn
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//
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CAbortedWidEntry widEntry( wid, usn );
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for ( unsigned i=0; i<_aAbortedWids.Count(); i++ )
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{
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if ( _aAbortedWids.Get(i)._wid == wid &&
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_aAbortedWids.Get(i)._usn == usn )
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{
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return TRUE;
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}
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}
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return FALSE;
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} //LokIsWidAborted
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//+-------------------------------------------------------------------------
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//
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// Method: CAbortedWids::LokReserve
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//
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// Synopsis: Reserve space for potentially aborted wids.
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//
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// Arguments: [cWids] -- # of slots to reserve now for failure later
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//
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// History: 27-April-1998 dlee Created
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//
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//--------------------------------------------------------------------------
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void CAbortedWids::LokReserve( unsigned cWids )
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{
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unsigned cPossible = _aAbortedWids.Count() + cWids;
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if ( _aAbortedWids.Size() < cPossible )
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_aAbortedWids.SetSize( cPossible );
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} //LokReserve
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