[Python-Dev] PEP 556: Threaded garbage collection (original) (raw)

Antoine Pitrou solipsis at pitrou.net
Fri Sep 8 13:08:39 EDT 2017

On Fri, 8 Sep 2017 10:03:33 -0700 Nick Coghlan <ncoghlan at gmail.com> wrote:

On 8 September 2017 at 08:05, Antoine Pitrou <solipsis at pitrou.net> wrote: > > Hello, > > I've written a PEP by which you can tell the GC to run in a dedicated > thread. The goal is to solve reentrancy issues with finalizers: > https://www.python.org/dev/peps/pep-0556/

+1 from me for the general concept. (Minor naming idea: "inline" may be a clearer name for the current behaviour). One point that seems worth noting: even with cyclic GC moved out to a separate thread, del methods and weakref callbacks triggered by a refcount going to zero will still be called inline in the current thread.

You're right, that bears mentioning. It's much less of a problem, of course, since such calls happen at deterministic places.

Regards

Antoine.

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