Re: [Pyobjc-dev] ObjC GC with PyObjC?

[Barry W. <bar...@gm...>]

On Thu, Jun 4, 2009 at 8:48 AM, Jonathan Saggau<sa...@gm...> wrote:
> Ronald Oussoren wrote:
>>
>> I don't agree. There could be advantages for regular python as well,
>> IMHO removing CPython's refcounting is a necessary first step for
>> removing the GIL.  Removing the GIL would definitely be an advantage
>> for general python code, especially because using multiple independent
>> threads of execution is the only way to seriously improve performance
>> on modern hardware because sadly enough the "wait a year and then my
>> single-threaded code is twice as fast"-era is over. Multiprocessing is
>> a cool hack, but isn't a real solution; I have a number of programs
>> that use multiple threads and need shared memory to get fast enough
>> communications (basicly because large objects get transferred between
>> threads).
>>
>> Ronald
> As a curiosity for those who know the internals of Python better than I
> do, is there any reason to believe that most existing python code would
> even "care" which flavor of GC it's running under?

As an aside, the Google guys think that they can pull this off without
affecting even C-language extensions. I just discovered the Unladed
Swallow project (http://code.google.com/p/unladen-swallow/) appears to
be their attempt to reimplement the Python VM on top of LLVM. Their
goals are performance, but they also mention pluggable GC and some
other very cool tricks. I think it would definitely be worth keeping
an eye on this project. If it progresses as they claim, it may be a
much better starting point for any efforts to bring Python and the
ObjC runtime closer.

-B

>
>
> Jonathan 'usually lurking' Saggau
>
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