Issue 47238: Python threading.Event().wait() depends on the system time

Issue47238

Created on 2022-04-06 10:19 by AleksandrAQ, last changed 2022-04-11 14:59 by admin.

Files
File name	Uploaded	Description	Edit
reproduction.py	AleksandrAQ, 2022-04-06 10:19	You need root privileges to change the system time.

Messages (1)
msg416851 - (view)	Author: Aleksandr (AleksandrAQ)	Date: 2022-04-06 10:19
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?

Messages (1)

msg416851 - (view)

Author: Aleksandr (AleksandrAQ)

Date: 2022-04-06 10:19

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?

History
Date	User	Action	Args
2022-04-11 14:59:58	admin	set	github: 91394
2022-04-06 10:19:09	AleksandrAQ	create