From: "trans.  (T. Onoma)" <transami@...>
Date: 2004-09-28T21:25:15+09:00
Subject: Re: Best name for "this method" ?

On Tuesday 28 September 2004 04:29 am, Florian Gross wrote:
> trans. (T. Onoma) wrote:
> >>Binding.of_caller? Could you explain this more? I'm not sure to what you
> >>are referring.
> >
> > Okay, I see. I did some research to understand. The problem I see with
> > this is that it might have too large an overhead --in effect creating a
> > binding prior to every method invocation. Is that so? On the other hand,
> > I see no reason for 'self' of caller not to be available.
>
> Why? As you can see from my trace_func implementation Ruby already knows
> how to fetch the binding on demand (via ruby_frame->prev) -- it just
> doesn't provide a way to do it from within Ruby.

Well, that's my question. Does it just retrieve a reference or does it have to 
create the binding? If it's just grabbing a reference to an already existing 
binding, that's fine, but then I don't see why using set_trace_function 
should slow a program down as much as it does. So I'm guessing it has to 
create a binding. Although ruby_frame->prev suggests it already exists.

I just don't know the internals well enough, and am wondering.

T.