[issue18808] Thread.join returns before PyThreadState is destroyed

[STINNER Victor]

STINNER Victor <vstinner at redhat.com> added the comment:

_thread._set_sentinel() and threading.Thread._tstate_lock is a great enhancement, as Py_EndInterprter() which now calls threading._shutdown().

FYI I found yet another race condition, this time in threading._shutdown(). See bpo-36402 follow-up: "threading._shutdown() race condition: test_threading test_threads_join_2() fails randomly".

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nosy: +vstinner

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue18808>
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