[Python-Dev] PEP 318: Let's propose some useful built-in decorators

[Phillip J. Eby]

At 09:07 AM 4/3/04 -0800, Guido van Rossum wrote:
> > > We could also add a standard implementation of synchronized.  Or
> > > perhaps that should be imported from threading.  (But is that really
> > > a good thing to copy from Java?)
> >
> > I don't want to sound FUDdy, but I was under the impression that
> > people didn't think this is something we actually want...
>
>Hence my parenthetical remark.
>
>But given that it is quite simple to do using decorators, surely
>*someone* will implement it.  How useful it will be remains to be
>seen.  Maybe someone should take this idea, run with it, and report
>how it enhanced their project?

For what it's worth, Jim Fulton's ExtensionClass package has had a 
"synchronized" metaclass implemented in C since about...  1997?  I don't 
know of anybody actually using it, though.

For my few dabblings into objects being shared across threads, though, I've 
typically needed rather precise control over when things get locked and 
unlocked and how, so I've never bothered implementing a synchronizing 
decorator.