(************************************************************************)
(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2017     *)
(*   \VV/  **************************************************************)
(*    //   *      This file is distributed under the terms of the       *)
(*         *       GNU Lesser General Public License Version 2.1        *)
(************************************************************************)

(** Global control of Coq. *)

(** Will periodically call [Thread.delay] if set to true *)
val enable_thread_delay : bool ref

val interrupt : bool ref
(** Coq interruption: set the following boolean reference to interrupt Coq
    (it eventually raises [Break], simulating a Ctrl-C) *)

val check_for_interrupt : unit -> unit
(** Use this function as a potential yield function. If {!interrupt} has been
    set, il will raise [Sys.Break]. *)

val timeout : int -> ('a -> 'b) -> 'a -> exn -> 'b
(** [timeout n f x e] tries to compute [f x], and if it fails to do so
    before [n] seconds, it raises [e] instead. *)