41 lines
1.5 KiB
OCaml
41 lines
1.5 KiB
OCaml
(* Lwt
|
|
* http://www.ocsigen.org
|
|
* Copyright (C) 2008 Jérôme Vouillon
|
|
* Laboratoire PPS - CNRS Université Paris Diderot
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation, with linking exceptions;
|
|
* either version 2.1 of the License, or (at your option) any later version.
|
|
* See COPYING file for details.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*)
|
|
|
|
(** Creating pools (for example pools of connections to a database). *)
|
|
|
|
(** Instead of creating a new connection each time you need one,
|
|
keep a pool of opened connections and reuse opened connections
|
|
that are free.
|
|
*)
|
|
|
|
(** Type of pools *)
|
|
type 'a t
|
|
|
|
(** [create n f] creates a new pool with at most [n] members.
|
|
[f] is the function to use to create a new pool member. *)
|
|
val create :
|
|
int -> ?check:('a -> (bool -> unit) -> unit) -> (unit -> 'a Lwt.t) -> 'a t
|
|
|
|
(** [use p f] takes one free member of the pool [p] and gives it to the function
|
|
[f].
|
|
*)
|
|
val use : 'a t -> ('a -> 'b Lwt.t) -> 'b Lwt.t
|