From: Gyoung-Yoon Noh <nohmad@...>
Date: 2005-05-04T11:48:25+09:00
Subject: Re: I rock.

On 5/4/05, Eric Hodel <drbrain@segment7.net> wrote:
> On 03 May 2005, at 15:21, Ryan Davis wrote:
> 
> > On May 3, 2005, at 1:32 PM, Gyoung-Yoon Noh wrote:
> >
> >> Python has PyRex which enables writing CPython extensions
> >> with python-like syntax. I guess Ruby2RubyC can do a foundation
> >> role for future great works such as writing extensions with ruby
> >> syntax, enhancing performance easily with type conversion,
> >> or can be used as intermediate format for translating Ruby to C.
> >
> > Ruby2RubyC will probably not, for the first few months at least,
> > improve performance with any sort of type conversion at all. In fact,
> > I suspect that Eric's current version will start to get fairly severe
> > penalties until we move away from using rb_funcall for everything.
> 
> Yup, it only bypasses the fast parts of eval.c (AST walking), and none
> of the slow parts (rb_funcall) so you get almost zero speed benefit out
> of it currently.  (See the "time factorial(9999)" output further up the
> thread).


Oops, by 'type conversion', I meant PyRex-style C types usage.
PyRex enables feeding native C types, instead of PythonC types,
easily within its python-like syntax anywhere. In case of ruby, I think 
it will be much greater if it's possible to use RubyDL's type wrapper
against native C types.

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