1Callback(3)                      OCaml library                     Callback(3)
2
3
4

NAME

6       Callback - Registering OCaml values with the C runtime.
7

Module

9       Module   Callback
10

Documentation

12       Module Callback
13        : sig end
14
15
16       Registering OCaml values with the C runtime.
17
18       This module allows OCaml values to be registered with the C runtime un‐
19       der a symbolic name, so that C code  can  later  call  back  registered
20       OCaml functions, or raise registered OCaml exceptions.
21
22
23
24
25
26
27       val register : string -> 'a -> unit
28
29
30       Callback.register  n  v registers the value v under the name n . C code
31       can later retrieve a handle to v by calling caml_named_value(n) .
32
33
34
35       val register_exception : string -> exn -> unit
36
37
38       Callback.register_exception n exn registers the exception contained  in
39       the  exception value exn under the name n . C code can later retrieve a
40       handle to the exception by calling caml_named_value(n) . The  exception
41       value  thus  obtained  is  suitable  for  passing  as first argument to
42       raise_constant or raise_with_arg .
43
44
45
46
47
48OCamldoc                          2022-02-04                       Callback(3)