Python threading.Event().wait() depends on the system time · Issue #91394 · python/cpython (original) (raw)

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GitHub fields:

assignee = None closed_at = None created_at = <Date 2022-04-06.10:19:09.231> labels = ['3.8', 'type-bug', 'library'] title = 'Python threading.Event().wait() depends on the system time' updated_at = <Date 2022-04-06.10:19:09.231> user = 'https://github.com/AleksandrAQ'

bugs.python.org fields:

activity = <Date 2022-04-06.10:19:09.231> actor = 'AleksandrAQ' assignee = 'none' closed = False closed_date = None closer = None components = ['Library (Lib)'] creation = <Date 2022-04-06.10:19:09.231> creator = 'AleksandrAQ' dependencies = [] files = ['50725'] hgrepos = [] issue_num = 47238 keywords = [] message_count = 1.0 messages = ['416851'] nosy_count = 1.0 nosy_names = ['AleksandrAQ'] pr_nums = [] priority = 'normal' resolution = None stage = None status = 'open' superseder = None type = 'behavior' url = 'https://bugs.python.org/issue47238' versions = ['Python 3.8']

This happens on Ubuntu on Python versions 3.8.5 and 3.10.4

I have two threads that can change the system time to a day ago.
If the change in the system time for a day occurs at the time of wait, then I hang for one day plus the waiting time.

I thought Event.wait() uses a monotonous clock, but this behavior points to an absolute clock.

Are there any solutions?