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[WIN32K]

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- There is currently no need to lock more than three objects at a time, this permits code simplification/speed
  - Keep the handles order in GDIOBJ_LockMultipleObjs
Still unused...

svn path=/branches/reactos-yarotows/; revision=46899
This commit is contained in:
Jérôme Gardou 2010-04-16 16:55:52 +00:00
parent 6a8d2ef675
commit 4ec4675b9e
1 changed files with 23 additions and 21 deletions
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44
subsystems/win32/win32k/objects/gdiobj.c
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@ -1625,37 +1625,39 @@ GDI_MapHandleTable(PSECTION_OBJECT SectionObject, PEPROCESS Process)
return MappedView;
}
/* Locks multiple objects at a time */
/* Locks up to 3 objects at a time */
VOID
INTERNAL_CALL
GDIOBJ_LockMultipleObjs(ULONG ulCount,
IN HGDIOBJ* ahObj,
OUT PGDIOBJ* apObj)
{
UINT i;
HGDIOBJ hTmp ;
BOOL unsorted = TRUE;
/* We bubble-sort them */
while(unsorted)
UINT iFirst = 0, iSecond = 0, iThird = 0;
UINT i ;
/* First is greatest */
for(i=1; i<ulCount; i++)
{
unsorted = FALSE ;
for(i=0; i<ulCount - 1; i++)
if((ULONG_PTR)ahObj[i] >= (ULONG_PTR)ahObj[iFirst])
{
/* The greatest the first */
if((ULONG_PTR)ahObj[i] < (ULONG_PTR)ahObj[i+1])
{
hTmp = ahObj[i];
ahObj[i]=ahObj[i+1];
ahObj[i+1] = hTmp;
unsorted = TRUE ;
}
iSecond = iFirst ;
iFirst = i;
continue ;
}
if((ULONG_PTR)ahObj[i] >= (ULONG_PTR)ahObj[iSecond])
{
iSecond = i;
continue;
}
iThird = i;
}
/* Then we lock them */
for(i=0; i<ulCount; i++)
{
apObj[i]=GDIOBJ_LockObj(ahObj[i], GDI_OBJECT_TYPE_DONTCARE);
}
/* We consider that at least two handles were passed */
apObj[iFirst] = GDIOBJ_LockObj(ahObj[iFirst], GDI_OBJECT_TYPE_DONTCARE);
apObj[iSecond] = GDIOBJ_LockObj(ahObj[iSecond], GDI_OBJECT_TYPE_DONTCARE);
if(ulCount == 3)
apObj[iThird] = GDIOBJ_LockObj(ahObj[iThird], GDI_OBJECT_TYPE_DONTCARE);
}