gh-119369: Fix deadlock during thread exit in free-threaded build #119528
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Release the GIL before calling `_Py_qsbr_unregister`. The deadlock could occur when the GIL was enabled at runtime. The `_Py_qsbr_unregister` call might block while holding the GIL because the thread state was not active, but the GIL was still held.
colesbury
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topic-free-threading
needs backport to 3.13
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Thanks @colesbury for the PR 🌮🎉.. I'm working now to backport this PR to: 3.13. |
miss-islington
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May 31, 2024
…ld (pythonGH-119528) Release the GIL before calling `_Py_qsbr_unregister`. The deadlock could occur when the GIL was enabled at runtime. The `_Py_qsbr_unregister` call might block while holding the GIL because the thread state was not active, but the GIL was still held. (cherry picked from commit 078b8c8) Co-authored-by: Sam Gross <colesbury@gmail.com>
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GH-119868 is a backport of this pull request to the 3.13 branch. |
colesbury
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May 31, 2024
…ild (GH-119528) (#119868) Release the GIL before calling `_Py_qsbr_unregister`. The deadlock could occur when the GIL was enabled at runtime. The `_Py_qsbr_unregister` call might block while holding the GIL because the thread state was not active, but the GIL was still held. (cherry picked from commit 078b8c8) Co-authored-by: Sam Gross <colesbury@gmail.com>
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Release the GIL before calling
_Py_qsbr_unregister.The deadlock could occur when the GIL was enabled at runtime. The
_Py_qsbr_unregistercall might block while holding the GIL because the thread state was not active, but the GIL was still held.pool_in_threads.py(test_multiprocessing_pool_circular_import) in free-threaded build #119369