Source file pack_dict.ml

(*
 * Copyright (c) 2018-2021 Tarides <contact@tarides.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *)

open Import

module type S = sig
  include Dict.S

  val v : ?fresh:bool -> ?readonly:bool -> ?capacity:int -> string -> t
end

include Dict.Make (IO.Unix)

(* Add IO caching around Dict.v *)
let IO.Cache.{ v } =
  let v_no_cache ~fresh ~readonly = v ~fresh ~readonly in
  IO.Cache.memoize ~clear:truncate ~valid
    ~v:(fun capacity -> v_no_cache ~capacity)
    Layout.dict

let v ?fresh ?readonly ?(capacity = 100_000) root =
  v capacity ?fresh ?readonly root