From: Charles Oliver Nutter <charles.nutter@...>
Date: 2007-10-29T21:08:09+09:00
Subject: Re: JRuby disabling ObjectSpace: what implications?

evanwebb@gmail.com wrote:
> I think of each_object as very much a MRI implementation feature that
> the rest of us
> implementors struggle to implement. Because of this, the community and
> core members of
> each implementation need to really beginning discussing whether or not
> each_object is a
> Ruby feature or an MRI feature.

That's actually a really good point. each_object is more a feature of an 
individual implementation's memory model than a general feature that can 
be applied to every Ruby implementation. In many cases, like ours, you 
simply don't have control over that memory model enough to provide a 
real each_object implementation (and _id2ref requires tricks too, but 
it's at least bounded and explicit). So it may be fair to say that 
each_object is an MRI feature we emulate, but cannot simulate well 
enough for it to translate appropriately.