[3.12] gh-109974: Fix threading lock_tests race conditions (GH-110057) #110344
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…10057) Fix race conditions in test_threading lock tests. Wait until a condition is met rather than using time.sleep() with a hardcoded number of seconds. * Replace sleeping loops with support.sleeping_retry() which raises an exception on timeout. * Add wait_threads_blocked(nthread) which computes a sleep depending on the number of threads. Remove _wait() function. * test_set_and_clear(): use a way longer Event.wait() timeout. * BarrierTests.test_repr(): wait until the 2 threads are waiting for the barrier. Use a way longer timeout for Barrier.wait() timeout. * test_thread_leak() no longer needs to count len(threading.enumerate()): Bunch uses threading_helper.wait_threads_exit() internally which does it in wait_for_finished(). * Add BaseLockTests.wait_phase() which implements a timeout. test_reacquire() and test_recursion_count() use wait_phase(). (cherry picked from commit 4e356ad) Co-authored-by: Victor Stinner <vstinner@python.org>
This was referenced Oct 4, 2023
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Fix race conditions in test_threading lock tests. Wait until a
condition is met rather than using time.sleep() with a hardcoded
number of seconds.
an exception on timeout.
on the number of threads. Remove _wait() function.
the barrier. Use a way longer timeout for Barrier.wait() timeout.
len(threading.enumerate()): Bunch uses
threading_helper.wait_threads_exit() internally which does it in
wait_for_finished().
test_reacquire() and test_recursion_count() use wait_phase().
(cherry picked from commit 4e356ad)
Co-authored-by: Victor Stinner vstinner@python.org