ocaml/test/alloc.ml

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(***********************************************************************)
(* *)
(* Objective Caml *)
(* *)
(* Damien Doligez, projet Para, INRIA Rocquencourt *)
(* *)
(* Copyright 1996 Institut National de Recherche en Informatique et *)
(* Automatique. Distributed only by permission. *)
(* *)
(***********************************************************************)
(* $Id$ *)
(* Random allocation test *)
(*
Allocate arrays of strings, of random sizes in [0..1000[, and put them
into an array of 32768. Replace a randomly-selected array with a new
random-length array. Reiterate ad infinitum.
*)
let l = 32768;;
let m = 1000;;
let ar = Array.create l "";;
Random.init 1234;;
let compact_flag = ref false;;
let main () =
while true do
for i = 1 to 100000 do
ar.(Random.int l) <- String.create (Random.int m);
done;
if !compact_flag then Gc.compact () else Gc.full_major ();
print_newline ();
Gc.print_stat stdout;
flush stdout;
done
;;
let argspecs = [
"-c", Arg.Set compact_flag, "do heap compactions";
];;
Arg.parse argspecs (fun _ -> ()) "Usage: alloc [-c]";;
main ();;