Callback(3)                      OCaml library                     Callback(3)

NAME
       Callback - Registering OCaml values with the C runtime.

Module
       Module   Callback

Documentation
       Module Callback
        : sig end


       Registering OCaml values with the C runtime.

       This module allows OCaml values to be registered with the C runtime
       under a symbolic name, so that C code can later call back registered
       OCaml functions, or raise registered OCaml exceptions.






       val register : string -> 'a -> unit


       Callback.register n v registers the value v under the name n . C code
       can later retrieve a handle to v by calling caml_named_value(n) .



       val register_exception : string -> exn -> unit


       Callback.register_exception n exn registers the exception contained in
       the exception value exn under the name n . C code can later retrieve a
       handle to the exception by calling caml_named_value(n) . The exception
       value thus obtained is suitable for passing as first argument to
       raise_constant or raise_with_arg .



OCamldoc                          2024-02-29                       Callback(3)