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(* TEST *)
let n = 500
let loop = 2
let alive = ref (Array.init n (fun _ -> Array.make 10 0))
let create_weaks () =
Array.init n (fun i ->
let w = Weak.create 1 in
Weak.set w 0 (Some (!alive.(i)));
w
)
(** We are trying to keep the weak pointer of weak2 set when the
weak pointer of weak1 and weak3 are wrongly unset.
[weak1], [weak2] and [weak3] are identical.
*)
let weak1 = create_weaks ()
let weak2 = create_weaks ()
let weak3 = create_weaks ()
(** put the weak pointers in the major heap *)
let () =
let dummy = ref [||] in
for l=0 to 10 do
dummy := Array.make 300 0
done
let gccount () = (Gc.quick_stat ()).Gc.major_collections;;
let () =
for _l=1 to loop do
let bad = ref 0 in
for i=0 to n-1 do
(** make *this* weak key alive *)
for _j=0 to n*10 do
ignore (Weak.get weak2.(i) 0);
done;
(** Check that if it is alive in weak2 it is alive in weak1 *)
if Weak.check weak2.(i) 0 &&
not (Weak.check weak1.(i) 0) &&
Weak.check weak2.(i) 0
then incr bad;
(** Check that if it is alive in weak2 it is alive in weak3
This case was failing before the addition of the clean phase in the gc
*)
if Weak.check weak2.(i) 0 &&
not (Weak.check weak3.(i) 0) &&
Weak.check weak2.(i) 0
then incr bad;
!alive.(i) <- Array.make 10 0;
done;
(* Printf.printf "bad: %i\ gccount:%i\n%!" !bad (gccount ()); *)
if !bad > 0
then Printf.printf "failing\n%!"
else Printf.printf "success\n%!"
done
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