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Date: -- (:)
From: Sylvain Kerjean <skerjean@i...>
Subject: [Caml-list] interfacing with C++
let me share my experience :
believe it or not but i am able to create and manipulate windows and
menu bars under BeOS 
frome OCaml :)


i modify some files in the compiler (adding some extern "C" stuff in
mlvalues.h etc)
i recompile my ocaml compiler , all is ok.
I compile the following files with the good options, all works well.
When i run my programs all is ok except that i get some seg fault when
my programs create lots of new instances. 

Maybe it comes from the register_global_root ?
Any idea ?




i have two files one in C++ , one in ocaml (here are only the
skeletons):

file.ml
------------
type b ;; (* abstract type representing value encapsulating pointer to a
C++ instance*)
external be : unit -> b = "be"


class cl =
object

  val interne = be ()	
end;;


file.c++
-------------

extern "C" {
value be(value unit);
}

value be(value unit) {
CAMLparam1(unit);
CAMLlocal1(be);

be = alloc(1, Abstract_tag);

register_global_root(&be);

Store_field(be, 0, (value) new CL());

CAMLreturn(be)
}

-- 
Sylvain Kerjean
IRISA-INRIA, Campus de Beaulieu, 35042 Rennes cedex, France
Tél: +33 (0) 2 99 84 75 99, Fax: +33 (0) 2 99 84 71 71
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