[Webkit-unassigned] [Bug 205280] Python 3: Multiprocessing doesn't do well when nested

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=205280

--- Comment #3 from Alexey Proskuryakov <ap at webkit.org> ---
In Python 3, one can choose the underlying method for how multiprocessing works, it's called "start method". See <https://docs.python.org/3/library/multiprocessing.html>.

As this bug is about multiprocessing having some strange behavior on tests with Python 3, it's relevant which of the methods you are using. I'm guessing that it is 'spawn' because that's the default. Since 'fork' was the only one that Python 2 supported, that would be the 1:1 replacement, but of course we shouldn't be using that on macOS.

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