[issue40221] Use new _at_fork_reinit() lock method in multiprocessing

[Dong-hee Na]

Dong-hee Na <donghee.na92 at gmail.com> added the comment:


New changeset a5900ecf9f22e65bef489633692e9ea6941379c5 by Dong-hee Na in branch 'master':
bpo-40221: Update multiprocessing to use _at_fork_reinit (GH-19511)
https://github.com/python/cpython/commit/a5900ecf9f22e65bef489633692e9ea6941379c5


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<https://bugs.python.org/issue40221>
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