[issue30171] Emit ResourceWarning in multiprocessing Queue destructor

[STINNER Victor]

STINNER Victor added the comment:

> Specifically "the thread wasn't started by a subprocess"...

I'm talking about this check in Queue._start_thread() of multiprocessing.queues:

        created_by_this_process = (self._opid == os.getpid())
        if not self._joincancelled and not created_by_this_process:
            self._jointhread = Finalize(
                self._thread, Queue._finalize_join,
                [weakref.ref(self._thread)],
                exitpriority=-5
                )

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue30171>
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