Jython

Dear Jython list,

Since discovering Jython a few weeks ago, I've had tons of fun coding=20
different stuff. Everything I've wanted to do has so far been pretty=20
easy to work out (Swing, Servlets, SAX, DOM, etc) and super-fun.

The one area in which I'm a little fuzzy is Synchronization. I've=20
managed to subclass java.lang.Thread and the Runnable interface in a=20
the usual ways... and even discovered inner classes in Jython!! (does=20
anyone else do this... can't find it documented). Inner Jython classes=20=

seem to work particularly well with threading when you want to spin off=20=

a new thread quickly (a case when you would probably just do an=20
anonymous inner class in Java).

However, you obviously can't use the synchronized keyword in Jython=20
(right?)... I'd prefer to stick to Java's Threading API as much as=20
possible (just because)... but I guess this is an area where I don't=20
have a choice. Seems like locks and synchronization will have to come=20
from Python...

Can anyone confirm/refute this? Or perhaps provide advice or examples=20
of best-practices for threading and synchronization in this area?

I hear that Python has both the 'thread' and 'threading' modules, and=20
that the later was inspired by Java. I guess what I'm asking for is=20
personal anecdotes of how some of you guys prefer to handle this=20
important area of Jython programming. (I can look up the Python=20
documentation on my own, but I really would like some advice from=20
someone who's walked this road before)


THANKS!!!!


__
Todd Ditchendorf, Web Developer
Email: todd@...
Web=A0 : http://www.ditchnet.org
Cell: (205) 243-9318

Re: [Jython-users] Synchronization/Threading best practices in Jython... From: Diez B. Roggisch <deets@we...> - 2004-07-02 16:07 > I hear that Python has both the 'thread' and 'threading' modules, and > that the later was inspired by Java. I guess what I'm asking for is > personal anecdotes of how some of you guys prefer to handle this > important area of Jython programming. (I can look up the Python > documentation on my own, but I really would like some advice from > someone who's walked this road before) While python has no built-in sync-mechanisms as you observed correctly, you can reach quite similarily declarative results using the more flexibility of the language. I personally created wrappers around my functions that perform the neccessary syncing. By placing special tags in the docstring (similar to javadoc, but more powerful due to the fact that they are available at runtime) and using factories, I determined which function to wrap. So while this is somewhat less convinient than the synchronized keyword, it is usable enough and given the advantages of python over java in general, I prefer it. Now on c.l.python and simlar groups of interests there are discussions about introduction of decorators - these are more or less user-definable declarations on function/method-level that are declared and used in a standarized fashion. This would allow for sync-magic beeing performed in a concise and well-known manner. If and when and how these become part of python and later on jython - well, thats a subject I can't say much on. Regards, Diez

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