ocaml/stdlib/callback.ml

26 lines
1.3 KiB
OCaml

(***********************************************************************)
(* *)
(* OCaml *)
(* *)
(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
(* *)
(* Copyright 1996 Institut National de Recherche en Informatique et *)
(* en Automatique. All rights reserved. This file is distributed *)
(* under the terms of the GNU Library General Public License, with *)
(* the special exception on linking described in file ../LICENSE. *)
(* *)
(***********************************************************************)
(* Registering OCaml values with the C runtime for later callbacks *)
external register_named_value : string -> Obj.t -> unit
= "caml_register_named_value"
let register name v =
register_named_value name (Obj.repr v)
let register_exception name (exn : exn) =
let exn = Obj.repr exn in
let slot = if Obj.tag exn = Obj.object_tag then exn else Obj.field exn 0 in
register_named_value name slot