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[3.13] gh-87135: Hang non-main threads that attempt to acquire the GIL during finalization (GH-105805) #137827

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Merged
gpshead merged 4 commits into from
Aug 17, 2025
Merged

[3.13] gh-87135: Hang non-main threads that attempt to acquire the GIL during finalization (GH-105805) #137827

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f3e301d
[3.13] gh-87135: Hang non-main threads that attempt to acquire the GI…
jbms Oct 2, 2024
d946b3d
state "3.13.7 and earlier"
gpshead Aug 15, 2025
f412737
backport: do not add the deprecated marker
gpshead Aug 15, 2025
d24d14e
fix Py_IsFinalizing doc ref
gpshead Aug 16, 2025
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state "3.13.7 and earlier"
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@gpshead
gpshead committed Aug 15, 2025
commit d946b3d4af98a06b403c4231c26fbc3b8b63b1e8
2 changes: 1 addition & 1 deletion Doc/c-api/init.rst
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Expand Up @@ -1103,7 +1103,7 @@ the blocked thread.

Gross? Yes. This prevents random crashes and/or unexpectedly skipped C++
finalizations further up the call stack when such threads were forcibly exited
here in CPython 3.13 and earlier. The CPython runtime GIL acquiring C APIs
here in CPython 3.13.7 and earlier. The CPython runtime GIL acquiring C APIs
have never had any error reporting or handling expectations at GIL acquisition
time that would've allowed for graceful exit from this situation. Changing that
would require new stable C APIs and rewriting the majority of C code in the
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