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| author | Victor Stinner <vstinner@python.org> | 2021-10-01 07:55:28 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-10-01 07:55:28 (GMT) |
| commit | 1ee0f94d16f150356a4b9b0a39d44ba1d2d5b9fc (patch) | |
| tree | e94381603c5b5f84731ace512dbc7fbf6bc01fc7 /Doc | |
| parent | 3e1c5d989a884cfbeb427b6fc86012b03cb95f62 (diff) | |
| download | cpython-1ee0f94d16f150356a4b9b0a39d44ba1d2d5b9fc.zip cpython-1ee0f94d16f150356a4b9b0a39d44ba1d2d5b9fc.tar.gz cpython-1ee0f94d16f150356a4b9b0a39d44ba1d2d5b9fc.tar.bz2 | |
bpo-41710: PyThread_acquire_lock_timed() uses sem_clockwait() (GH-28662)
On Unix, if the sem_clockwait() function is available in the C
library (glibc 2.30 and newer), the threading.Lock.acquire() method
now uses the monotonic clock (time.CLOCK_MONOTONIC) for the timeout,
rather than using the system clock (time.CLOCK_REALTIME), to not be
affected by system clock changes.
configure now checks if the sem_clockwait() function is available.
Diffstat (limited to 'Doc')
| -rw-r--r-- | Doc/whatsnew/3.11.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Doc/whatsnew/3.11.rst b/Doc/whatsnew/3.11.rst index d01d2e2..ff376d2 100644 --- a/Doc/whatsnew/3.11.rst +++ b/Doc/whatsnew/3.11.rst @@ -239,6 +239,16 @@ sqlite3 (Contributed by Aviv Palivoda, Daniel Shahaf, and Erlend E. Aasland in :issue:`16379`.) +threading +--------- + +* On Unix, if the ``sem_clockwait()`` function is available in the C library + (glibc 2.30 and newer), the :meth:`threading.Lock.acquire` method now uses + the monotonic clock (:data:`time.CLOCK_MONOTONIC`) for the timeout, rather + than using the system clock (:data:`time.CLOCK_REALTIME`), to not be affected + by system clock changes. + (Contributed by Livius and Victor Stinner in :issue:`41710`.) + time ---- |