One possible way to improve the situation is, that if we really believe
python cannot easily support such optimizations because the code is too
dynamic, is to allow manual annotation of functions. For example, gcc
has allowed such annotations using __attribute__ for quite a while. This
would
On 9/1/05, Raymond Hettinger [EMAIL PROTECTED] wrote:
The goal is to determine whether the setobject.c implementation would be
improved by recoding the set_lookkey() function to optimize key
insertion order using Brent's variation of Algorithm D (See Knuth vol.
III, section 6.4, page 525).
Hi,
Brent's variation depends on the next probe position for a key being
derivable just from the key and its current position. The use of
perturbation in set_lookkey() prevents that, as we cannot say, given a
key at a certain position, where the next probe location for that key
would have
Neal Becker wrote:
One possible way to improve the situation is, that if we really believe
python cannot easily support such optimizations because the code is too
dynamic, is to allow manual annotation of functions. For example, gcc
has allowed such annotations using __attribute__ for quite a
-Original Message-
From: Andrew Durdin [mailto:[EMAIL PROTECTED]
Sent: Friday, September 16, 2005 8:25 AM
To: [EMAIL PROTECTED]
Cc: python-dev@python.org
Subject: Re: [Python-Dev] C coding experiment
On 9/1/05, Raymond Hettinger [EMAIL PROTECTED] wrote:
The goal is to
I think this is mainly a question for Guido - where do we stand with respect
to the ast-branch for Python 2.5?
If we're targetting a March release for 2.5a1, then we probably need to land
implementations for PEP 342 and PEP 343 at least a couple of months before
that, and the current patches
Sokolov Yura wrote:
I think I know how to remove GIL Obviously I am an idiot.
Not an idiot, just lazy :-) Please try to implement your ideas,
and I predict that you will find:
1. it is a lot of work to implement
2. it requires changes to all C files, in particular to extension
modules
Martin However, this is really hard to do correctly - if it were
Martin simple, it would have been done long ago.
I don't believe difficulty is the only (or primary) barrier. I think
*someone* would have tackled it since Greg Stein did back in 1.4(?) or his
free-threading changes would
