[issue34128] Do not block threads when pickle/unpickle

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

This is about releasing the GIL periodically to allow other threads to run, as Python already does in its main interpreter loop.

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nosy: +pitrou
versions: +Python 3.8 -Python 3.6

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue34128>
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