From: "Iñaki Baz Castillo" <ibc@...>
Date: 2012-05-18T04:24:32+09:00
Subject: Re: rb_gc_register_address() or rb_gc_mark()?

2012/5/17 Iñaki Baz Castillo <ibc@aliax.net>:
> Ok, after some experiment I'm confused:
>
> - I run GC.startt every 0.1 seconds.
>
> - While my_class instance (which wraps the C struct referencing
> my_string VALUE) remains in the scope (or stored in a global variable)
> my_string is NOT GC'd. I know it because I've stored its object_id and
> used it in ObjectSpace._id2ref(id) and it returns my_string.
>
> So... even if I've seen the usage of rb_gc_mark() in some C
> extensions, in my experiments it does nothing. Any help would be
> appreciated.

Forget it please! I was storing my_string in a class attribute :(

Yes, rb_gc_mark() stuf is fully understood. Now I will investigate
what rb_gc_(un)register does, since in my experiments it does NOTHING.

-- 
Iñaki Baz Castillo
<ibc@aliax.net>