[3.12] gh-127586: multiprocessing.Pool does not properly restore blocked signals (try 2) (GH-128011) #128299
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…ed signals (try 2) (pythonGH-128011) Correct pthread_sigmask in resource_tracker to restore old signals Using SIG_UNBLOCK to remove blocked "ignored signals" may accidentally cause side effects if the calling parent already had said signals blocked to begin with and did not intend to unblock them when creating a pool. Use SIG_SETMASK instead with the previous mask of blocked signals to restore the original blocked set. (cherry picked from commit aeb9b65) Co-authored-by: Stephen Hansen <[email protected]> Co-authored-by: Peter Bierma <[email protected]> Co-authored-by: Gregory P. Smith <[email protected]>
This was referenced Dec 27, 2024
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Correct pthread_sigmask in resource_tracker to restore old signals
Using SIG_UNBLOCK to remove blocked "ignored signals" may accidentally
cause side effects if the calling parent already had said signals
blocked to begin with and did not intend to unblock them when
creating a pool. Use SIG_SETMASK instead with the previous mask of
blocked signals to restore the original blocked set.
(cherry picked from commit aeb9b65)
Co-authored-by: Stephen Hansen [email protected]
Co-authored-by: Peter Bierma [email protected]
Co-authored-by: Gregory P. Smith [email protected]
multiprocessing.Pooldoes not properly restore blocked signals #127586