U++ framework: U++ Callbacks and Timers » TimerCallBack interval resolution

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Re: TimerCallBack interval resolution [message #58047 is a reply to message #58046]

Mon, 24 January 2022 10:47

mirek
Messages: 14291
Registered: November 2005

Ultimate Member

deep wrote on Mon, 24 January 2022 09:56

Hi Mirek,

Thanks for explanation.

I was under impression that SetTimeCallback/TimeCallback as independent time trigger.

mirek wrote on Sun, 23 January 2022 00:02

It is supposed to be about 20ms by design and it is not even guaranteed. If you need more precise timing, you need to run it in separate thread.

Small code snippet or link will be helpful to setup repeat callback independent of GUI.

Frankly, the only time I did that was in SDL2 based sound synthetiser and there the period is set by SDL2 sound system.

Still, you can check it here:

https://github.com/ultimatepp/ultimatepp/blob/master/example s/Synth/Core.cpp

(or in examples/SDLSoundDemo)

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[Message index]

		TimerCallBack interval resolution By: deep on Wed, 19 January 2022 07:41
		Re: TimerCallBack interval resolution By: Tom1 on Wed, 19 January 2022 13:19
		Re: TimerCallBack interval resolution By: deep on Wed, 19 January 2022 14:27
		Re: TimerCallBack interval resolution By: Tom1 on Wed, 19 January 2022 14:40
		Re: TimerCallBack interval resolution By: Didier on Thu, 20 January 2022 21:43
		Re: TimerCallBack interval resolution By: deep on Fri, 21 January 2022 07:39
		Re: TimerCallBack interval resolution By: mirek on Sat, 22 January 2022 19:32
		Re: TimerCallBack interval resolution By: deep on Mon, 24 January 2022 09:56
		Re: TimerCallBack interval resolution By: mirek on Mon, 24 January 2022 10:47
		Re: TimerCallBack interval resolution By: superdev on Wed, 04 January 2023 20:19
		Re: TimerCallBack interval resolution By: mirek on Thu, 05 January 2023 09:29
		Re: TimerCallBack interval resolution By: superdev on Fri, 06 January 2023 16:20
		Re: TimerCallBack interval resolution By: mirek on Sat, 07 January 2023 09:10
		Re: TimerCallBack interval resolution By: superdev on Sat, 07 January 2023 11:05
		Re: TimerCallBack interval resolution By: mirek on Sat, 07 January 2023 13:15
		Re: TimerCallBack interval resolution By: superdev on Sun, 08 January 2023 06:38
		Re: TimerCallBack interval resolution By: superdev on Tue, 10 January 2023 19:12
		Re: TimerCallBack interval resolution By: mirek on Wed, 11 January 2023 10:36
		Re: TimerCallBack interval resolution By: superdev on Wed, 11 January 2023 18:17

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