[pypy-dev] Misc news

Armin Rigo arigo at tunes.org
Mon Sep 5 14:22:40 CEST 2011

Hi Rodrigo,

On Mon, Sep 5, 2011 at 2:44 AM, Rodrigo Pinheiro Marques de Araújo
<fenrrir at gmail.com> wrote:
> I made a first version of stackless with continulets. Attached the patch and
> the complete stackless.py file for review. Someone have time for look the
> patch?

Great!  Thanks a lot.  All of test_stackless.py passes, so I'm
checking in the patch.  If someone wants to give it a more thorough
review he is welcome :-)

Regarding performance: it's already good to get 1/3 performance
improvement.  I think it corresponds well to the removal of the extra
levels: indeed, our JIT should be good at "compressing" this overhead
(if not completely removing), so getting an extra 33% by manual
rewriting sounds reasonable to me.

About recursion_helper.py: ah, good idea to turn it into a decorator.
Maybe we could include it e.g. in the stackless module.  But of course
the best thing to do would be to have the effect semi-automatically,
e.g. adding a way to ask the interpreter "when you have consumed more
than X% of the stack, automatically do the next call via a switch to
this continulet"...

A bientôt,


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