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Re: Repeating timers and suspending the computer
From: |
Marcin Borkowski |
Subject: |
Re: Repeating timers and suspending the computer |
Date: |
Sat, 10 Dec 2022 22:39:11 +0100 |
User-agent: |
mu4e 1.1.0; emacs 29.0.50 |
On 2022-12-09, at 08:25, Eli Zaretskii <eliz@gnu.org> wrote:
>> From: Marcin Borkowski <mbork@mbork.pl>
>> Date: Fri, 09 Dec 2022 06:20:22 +0100
>>
>> assume that I said
>>
>> (run-with-timer 0 1
>> (lambda () (message "%s" (format-time-string
>> "%H:%M:%S.%3N"))))
>>
>> and put my laptop in the "sleep mode" for 20 seconds. How many time
>> messages should I get? Assume `timer-max-repeats' is 10 (which seems to
>> be the default).
>>
>> When I did the experiment, it seemed that the timer'd function was run
>> /twice/ after waking up, which looks really strange -- why two times?
>
> I think you have some implicit mental model of what happens when the
I think so, though it is pretty vague ATM.
> number of delayed invocations of the timer function exceeds that
> limit, a model that you didn't describe. You seem to be assuming that
> you will get those 10 invocations, and no more, is that right? But
"Assuming" is probably not the best word. "Suspecting" might fit
better;-).
> that is not the only possible way of dealing with this situation. In
> fact, it isn't even smart: if time has jumped far ahead, why should
> Emacs give you 10 useless invocations of the timer?
Well, I can think of some reasons... (Not to say they are very /good/
reasons.)
> Or if you were expecting something else, please tell what you expected
> and why.
Frankly, I expected my function to be called either once or 10 times,
but not twice.
So, how can I get a better mental model?
--
Marcin Borkowski
http://mbork.pl
- Repeating timers and suspending the computer, Marcin Borkowski, 2022/12/09
- Re: Repeating timers and suspending the computer, Eli Zaretskii, 2022/12/09
- Re: Repeating timers and suspending the computer, Emanuel Berg, 2022/12/10
- Re: Repeating timers and suspending the computer,
Marcin Borkowski <=
- Re: Repeating timers and suspending the computer, Eli Zaretskii, 2022/12/11
- Re: Repeating timers and suspending the computer, Marcin Borkowski, 2022/12/13
- Re: Repeating timers and suspending the computer, Eli Zaretskii, 2022/12/13
- Re: Repeating timers and suspending the computer, Marcin Borkowski, 2022/12/14
- Re: Repeating timers and suspending the computer, Eli Zaretskii, 2022/12/15
- Re: Repeating timers and suspending the computer, Marcin Borkowski, 2022/12/15