[issue35479] multiprocessing.Pool.join() always takes at least 100 ms

[STINNER Victor]

STINNER Victor <vstinner at redhat.com> added the comment:

_worker_handler has two issues:

* It polls the worker status every status every 100 ms: I created bpo-35493 to investigate how to avoid that
* After close() or terminate() has been called, it loops until self._cache is empty. I would like to use result.wait(), but a result never completes after terminate(): I created bpo-35478 to see if tasks can be unblocked in that case (to ensure that result.wait() completes after terminate().

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dependencies: +multiprocessing.Pool._worker_handler(): use SIGCHLD to be notified on worker exit, multiprocessing: ApplyResult.get() hangs if the pool is terminated

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue35479>
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