fix: SaslServer busy-loop causes process hang after test suite#3305
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kevinjqliu wants to merge 2 commits intoapache:mainfrom
Open
fix: SaslServer busy-loop causes process hang after test suite#3305kevinjqliu wants to merge 2 commits intoapache:mainfrom
kevinjqliu wants to merge 2 commits intoapache:mainfrom
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Co-authored-by: Copilot <copilot@github.com>
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not sure if im tripping, but this took me a while to figure out, and only affects python 3.13 |
rambleraptor
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May 1, 2026
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This looks sensible. What a find! Thanks for doing this
| except Exception: | ||
| pass | ||
| self._socket.close() | ||
| self.join(timeout=5) |
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I have the feeling I know the answer, but why 5?
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just randomly picked a value, 5 seconds should be long enough for the threads to shutdown
| self._socket.close() | ||
| self.join(timeout=5) | ||
| for client in self._clients: | ||
| client.close() |
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This should probably be in a try/except block again. If one of these throws an exception, it'll crash.
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ty, made the change!
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Rationale for this change
PYTHON=3.13 make testhangs after all tests pass.The
SaslServertest helper hasexcept Exception: passin its accept loop. Afterclose()is called,accept()raises on every iteration but the exception is swallowed, creating a tight busy-loop that holds the GIL and prevents the process from exiting.This is particularly severe on CPython 3.13+ on macOS, where GIL fairness changes make the main thread unable to make progress against the spinning daemon thread.
Changes
except Exception: pass->except Exception: breakto exit the loop when the socket is closedclose(): close the server socket first (unblocksaccept()), thenjoin()the thread (ensures no more client appends), then close tracked clientsAre these changes tested?
PYTHON=3.13 make testpasses with clean exit.Are there any user-facing changes?
No.