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Corrected the cell search algorithm so that it allocates memory 

for BPEnum instead of putting it in the local frame.  The structure
is half a megabyte and will severely limit the hierarchy depth
because it is used in the recursive cell search.
This commit is contained in:
Tim Edwards 2022-09-27 10:58:49 -04:00
parent 65b54e0cd5
commit bc46a7d469
1 changed files with 9 additions and 4 deletions
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13
database/DBcellsrch.c
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@ -76,19 +76,23 @@ struct seeTypesArg
* Returns 1 if the func() returns 1; otherwise returns 0 to keep the
* search alive.
*
* NOTE: struct BPEnum has an array size 10000, causing this routine to
* take up a half megabyte of stack space if the variable is declared
* inside the local frame. Use mallocMagic() instead.
*-----------------------------------------------------------------------------
*/
int
DBSrCellPlaneArea(BPlane *plane, Rect *rect, int (*func)(), ClientData arg)
{
BPEnum bpe;
BPEnum *bpe;
CellUse *use;
int rval = 0;
BPEnumInit(&bpe, plane, rect, BPE_OVERLAP, "DBSrCellPlaneArea");
bpe = (BPEnum *)mallocMagic(sizeof(BPEnum));
BPEnumInit(bpe, plane, rect, BPE_OVERLAP, "DBSrCellPlaneArea");
while (use = BPEnumNext(&bpe))
while (use = BPEnumNext(bpe))
{
if ((*func)(use, arg))
{
@ -97,7 +101,8 @@ DBSrCellPlaneArea(BPlane *plane, Rect *rect, int (*func)(), ClientData arg)
}
}
BPEnumTerm(&bpe);
BPEnumTerm(bpe);
freeMagic(bpe);
return rval;
}