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bpo-47075: Add shutdown_timeout to multiprocessing BaseManager #32112

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merged 1 commit into from Apr 19, 2022

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vstinner
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@vstinner vstinner commented Mar 25, 2022

Add an optional keyword 'shutdown_timeout' parameter to the
multiprocessing.BaseManager constructor.

Multiprocessing tests pass test.support.SHORT_TIMEOUT
to BaseManager.shutdown_timeout.

https://bugs.python.org/issue47075

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vstinner commented Mar 25, 2022

I don't think that having two separated timeout parameters, one for wait() and a second for join(), is needed. I prefer to have a single value. The process should be able to handle the shutdown command in 1.0 second, if it doesn't, terminate() should terminate it immediately and 1.0 should be enough to wait until the process is killed, no?

cc @pitrou @pablogsal

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@pitrou pitrou left a comment

LGTM on the principle.

Lib/multiprocessing/managers.py Show resolved Hide resolved
Doc/library/multiprocessing.rst Show resolved Hide resolved
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vstinner commented Apr 1, 2022

@pitrou: Would you mind reviewing the updated PR? I completed the doc and changed the behavior: kill the process if it is still alive shutdown_timeout seconds after being terminated.

Add an optional keyword 'shutdown_timeout' parameter to the
multiprocessing.BaseManager constructor. Kill the process if
terminate() takes longer than the timeout.

Multiprocessing tests pass test.support.SHORT_TIMEOUT
to BaseManager.shutdown_timeout.
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5 participants