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(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2012 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(* Thread safe queue with some extras *)
type 'a t
val create : unit -> 'a t
val pop : ?picky:('a -> bool) -> 'a t -> 'a
val push : 'a t -> 'a -> unit
val set_order : 'a t -> ('a -> 'a -> int) -> unit
val wait_until_n_are_waiting_and_queue_empty : int -> 'a t -> unit
(* Non destructive *)
val wait_until_n_are_waiting_then_snapshot : int -> 'a t -> 'a list
val clear : 'a t -> unit
val is_empty : 'a t -> bool
exception BeingDestroyed
(* Threads blocked in pop can get this exception if the queue is being
* destroyed *)
val destroy : 'a t -> unit
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