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gh-91231: Add shutdown_timeout to multiprocessing BaseManager (#32112)

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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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Victor Stinner 2022-04-19 16:27:00 +02:00 • committed by GitHub
parent 74070085da
commit 061a8bf77c
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4 changed files with 49 additions and 20 deletions
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16
Doc/library/multiprocessing.rst
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@ -1676,7 +1676,7 @@ Manager processes will be shutdown as soon as they are garbage collected or
their parent process exits. The manager classes are defined in the
:mod:`multiprocessing.managers` module:
.. class:: BaseManager([address[, authkey]])
.. class:: BaseManager(address=None, authkey=None, serializer='pickle', ctx=None, *, shutdown_timeout=1.0)
Create a BaseManager object.
@ -1691,6 +1691,20 @@ their parent process exits. The manager classes are defined in the
*authkey* is ``None`` then ``current_process().authkey`` is used.
Otherwise *authkey* is used and it must be a byte string.
*serializer* must be ``'pickle'`` (use :mod:`pickle` serialization) or
``'xmlrpclib'`` (use :mod:`xmlrpc.client` serialization).
*ctx* is a context object, or ``None`` (use the current context). See the
:func:`get_context` function.
*shutdown_timeout* is a timeout in seconds used to wait until the process
used by the manager completes in the :meth:`shutdown` method. If the
shutdown times out, the process is terminated. If terminating the process
also times out, the process is killed.
.. versionchanged: 3.11
Added the *shutdown_timeout* parameter.
.. method:: start([initializer[, initargs]])
Start a subprocess to start the manager. If *initializer* is not ``None``