From: Gaspard Bucher <gaspard@...>
Date: 2007-10-11T04:02:18+09:00
Subject: Re: retain VALUE from C extension

Yes, I think this is what I was looking for. As I understand, this
"declares" the address as needing "global marking" by adding it to
global_List.
/* mark protected global variables */
    for (list = global_List; list; list = list->next) {
	rb_gc_mark_maybe(*list->varptr);
    }
>
> I'm not sure what you mean by 'increment' or 'retain', but
> rb_global_variable() may be the answer.  See README.EXT.
>
>                                                         matz.
>
Effectivelly, "retain" (objective-C terminology) is not appropriate.
From what I understand the mark & sweep garbage collecting process is
quite different from the reference counting strategy I was familiar
with.

Thanks for the information.

Gaspard