Messages in this thread | | | Subject | Re: [PATCH] [RFC] notify userspace about time changes | From | john stultz <> | Date | Wed, 04 Aug 2010 08:58:46 -0700 |
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On Wed, 2010-08-04 at 15:48 +0300, Alexander Shishkin wrote: > Certain userspace applications (like "clock" desktop applets or ntpd) might > want to be notified when some other application changes the system time. It > might also be important for an application to be able to distinguish between > its own and somebody else's time changes.
So NTP doesn't actually care, as it will notice the STA_UNSYNC flag is set the next time it checks adjtimex.
The clock apps example seems reasonable, but maybe isn't the most compelling argument for adding a new kernel api.
Is there a actual use case that you need this for? I don't really have an issue with the code I just really want to make sure the feature would be useful enough to justify the API and code maintenance going forward.
Doing some of my own googling, I see Apple added such a notification method, which suggests there are apps that want this. http://stackoverflow.com/questions/690326/how-can-i-get-notified-of-a-system-time-change-in-my-cocoa-application
But it doesn't give any specific examples either.
thanks -john
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