GC thread safe?

[Neil Schemenauer]

Dieter Maurer wrote:
> Is the cyclic garbage collector known to be thread safe?

It is not.  It is protected by the big interpreter lock.  It's possible
that Zope is incorrectly dropping the interpreter lock and calling a
Python API but it's much more likely that you have run into a bug in an
extension module.  Finding it will not be easy since the symptom is far
away from the source.

  Neil