[issue46464] concurrent.futures.ProcessPoolExecutor can deadlock when tcmalloc is used

[Gregory P. Smith]

Gregory P. Smith <greg at krypto.org> added the comment:

It sounds like we need to introspect the mp_context= passed to ProcessPoolExecutor (and it's default when None) to raise an error when max_tasks_per_child is incompatible with it.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue46464>
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