Simple thread-safe counter?

[Michael Hudson]

Paul Rubin <http://phr.cx@NOSPAM.invalid> writes:

> Tim Peters <tim.peters at gmail.com> writes:
> > The GIL is your friend here:
> > 
> >     import itertools
> >     f = itertools.count().next
> 
> Thanks, I was hoping something like this would work but was not sure I
> could rely on it.
> 
> > A similar thing can be done with xrange.  But either way sucks if you
> > call it often enough to exceed the size of a Python short int
> > (platform C long).  The obvious way with an explicit mutex doesn't
> > have that problem.
> 
> Xrange, of course :).  I don't need to exceed the size of a short int,
> so either of these should work fine.  I wonder what measures the Pypy
> implementers will take (if any) to make sure these things keep
> working, but for now I won't worry about it.

Well, for now we don't support threads.  Easy!

Cheers,
mwh
(no, really, this is for the future)

-- 
  Two things I learned for sure during a particularly intense acid
  trip in my own lost youth: (1) everything is a trivial special case
  of something else; and, (2) death is a bunch of blue spheres.
                                             -- Tim Peters, 1 May 1998