race condition with eventlet.sleep() in __del__

[unipolar]

python3.6 - python3.10
greenlet-2.0.2
eventlet-0.33.3

This code stuck forever on eventlet.sleep()

import gc
import eventlet

class X:
    def __init__(self):
        self.x = self

    def __del__(self):
        eventlet.sleep()

class Y:
    def y(self):
        pass

y = None
gc.collect()

m = []

for k in range(328):
   m.append(Y().y)

X()
y = Y()   # !!! remove this line to reproduce on python3.6
eventlet.sleep()

can be reproduced with python docker container

docker run -v $PWD:/test --rm -it python:3.10 sh -c "pip3 install eventlet; python3 /test/code.py"

similar to gevent/gevent#1959, but for eventlet I have only artificial example

[4383]

Hello,

First thanks for reporting this issue, and sorry for the late response.

i just ran your code snippet against Python3.12 and I can't reproduce the issue.
Many things have been fixed during the previous months and many new eventlet versions have been released, so please can you recheck your use case with the latest version of eventlet?

Please share your observations.

If you not reproduce the problem, then I think we will be able to close this issue.

Thanks in advance.