94 lines
2.9 KiB
OCaml
94 lines
2.9 KiB
OCaml
(***********************************************************************)
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(* *)
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(* Objective Caml *)
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(* *)
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(* Damien Doligez, projet Para, INRIA Rocquencourt *)
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(* *)
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(* Copyright 1996 Institut National de Recherche en Informatique et *)
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(* en Automatique. All rights reserved. This file is distributed *)
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(* under the terms of the GNU Library General Public License. *)
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(* *)
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(***********************************************************************)
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(* $Id$ *)
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type stat = {
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minor_words : float;
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promoted_words : float;
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major_words : float;
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minor_collections : int;
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major_collections : int;
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heap_words : int;
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heap_chunks : int;
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live_words : int;
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live_blocks : int;
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free_words : int;
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free_blocks : int;
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largest_free : int;
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fragments : int;
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compactions : int
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};;
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type control = {
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mutable minor_heap_size : int;
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mutable major_heap_increment : int;
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mutable space_overhead : int;
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mutable verbose : int;
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mutable max_overhead : int;
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mutable stack_limit : int
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};;
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external stat : unit -> stat = "gc_stat";;
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external counters : unit -> (float * float * float) = "gc_counters";;
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external get : unit -> control = "gc_get";;
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external set : control -> unit = "gc_set";;
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external minor : unit -> unit = "gc_minor";;
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external major : unit -> unit = "gc_major";;
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external full_major : unit -> unit = "gc_full_major";;
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external compact : unit -> unit = "gc_compaction";;
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open Printf;;
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let print_stat c =
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let st = stat () in
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fprintf c "minor_words: %.0f\n" st.minor_words;
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fprintf c "promoted_words: %.0f\n" st.promoted_words;
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fprintf c "major_words: %.0f\n" st.major_words;
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fprintf c "minor_collections: %d\n" st.minor_collections;
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fprintf c "major_collections: %d\n" st.major_collections;
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fprintf c "heap_words: %d\n" st.heap_words;
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fprintf c "heap_chunks: %d\n" st.heap_chunks;
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fprintf c "live_words: %d\n" st.live_words;
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fprintf c "live_blocks: %d\n" st.live_blocks;
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fprintf c "free_words: %d\n" st.free_words;
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fprintf c "free_blocks: %d\n" st.free_blocks;
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fprintf c "largest_free: %d\n" st.largest_free;
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fprintf c "fragments: %d\n" st.fragments;
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fprintf c "compactions: %d\n" st.compactions;
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;;
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let allocated_bytes () =
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let (mi, pro, ma) = counters () in
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(mi +. ma -. pro) *. float_of_int (Sys.word_size / 8)
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;;
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external finalise : ('a -> unit) -> 'a -> unit = "final_register";;
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type alarm = {mutable active : bool; f : unit -> unit};;
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let rec call_alarm a =
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if a.active then begin
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finalise call_alarm a;
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a.f ();
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end;
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;;
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let create_alarm f =
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let a = { active = true; f = f } in
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finalise call_alarm a;
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a
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;;
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let delete_alarm a = a.active <- false;;
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