[issue30975] multiprocessing.Condition.notify_all() blocks indefinitely if a process waiting on it has died

[Antoine Pitrou]

Antoine Pitrou added the comment:

As a matter of fact, the bug is in Condition (which is used by Event.wait() but not by Event.is_set(), hence your workaround).  Here is a reproducer script.

This looks like a hard issue to solve.  There is no way to know whether a process that used to be waiting for a Condition was killed.

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title: Multiprocessing: Event.set() blocks indefinitely if a process waiting on it has died. -> multiprocessing.Condition.notify_all() blocks indefinitely if a process waiting on it has died
Added file: http://bugs.python.org/file47027/WaitersSleepers.py

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<http://bugs.python.org/issue30975>
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