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Restore 4*Unit heap allocation multiple.

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This commit is contained in:
David Brown 2016-12-28 13:05:16 +00:00
parent 66b7ea0be0
commit 265ac23f6e
1 changed files with 1 additions and 1 deletions
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2
src/runtime/Heap.Mod
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@ -270,7 +270,7 @@ MODULE Heap;
IF firstTry THEN
GC(TRUE); INC(blksz, Unit);
(* Anti-thrashing heuristics: ensure 1/5 of the heap will not be allocated. *)
t := S.LSH(allocated + blksz, -2) (*uDIV 4*) * 5 ; (* Minimum preferred heapsize *)
t := S.LSH(allocated + blksz, -(ldUnit+2)) (*uDIV 4*Unit*) * (5*Unit) ; (* Minimum preferred heapsize *)
IF uLT(heapsize, t) THEN ExtendHeap(t - heapsize) END;
firstTry := FALSE; new := NEWREC(tag);
IF new = NIL THEN (* Heap is 1/5 free but fragmentation prevented allocation *)