[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [sc-dev] Timers




On 30 Dec 2012, at 03:58, Jonatan Liljedahl <lijon@xxxxxxxxxxxx> wrote:

> There's also the case of stopping a periodic timer, then it's not only
> enough to disable the evaluation of a function.

I'm not sure I understand. You'd just do periodic timers in the traditional fashion, by returning a rescheduling value. That's perhaps not the most intuitive method, but it's very flexible, and users must learn about it anyway, as it can trip them up otherwise.

S.
> 
> Surely one can combine stuff to get a cancelable timer, but that would
> never be as straight forward as a dedicated timer class.
> 
> Another solution would be to add the ability to unschedule an item
> previously scheduled on a clock. I think it would work by popping all
> items from the prioQ, and discard the one to be removed, and push the
> rest back again. This might be a good thing to have anyway, even if we
> add a dedicated simple timer class.
> 
> 
> On Sun, Dec 30, 2012 at 4:58 AM, Scott Wilson <s.d.wilson@xxxxxxxxxx> wrote:
>> Perhaps something more general would be useful, i.e. a wrapper which evaluates only conditionally would give the cancel-ability and also be useful for other purposes.
>> 
>> Fdef could be used for this already I suppose.
>> 
>> S.
>> 
>> On 29 Dec 2012, at 15:11, Jonatan Liljedahl wrote:
>> 
>>> SkipJack has a few differences:
>>> - the name of the class has nothing to do with "timer"
>>> - survives cmdPeriod (as you said)
>>> - most importantly, it always repeats, no one-shot timers
>>> 
>>> Also it's rather complex compared to a simple lightweight timer, due
>>> to the cmdperiod-survival and storing skipjacks by name, etc. I think
>>> SkipJack has a clear and useful purpose (periodic timer that survives
>>> cmdPeriod), and that it would be nice with a separate simple and clear
>>> timer class similar or equal to the one I posted, instead of extending
>>> SkipJack.
>>> 
>>> On Sat, Dec 29, 2012 at 9:31 PM, Jakob Leben <jakob.leben@xxxxxxxxx> wrote:
>>>> On Sat, Dec 29, 2012 at 4:54 PM, Jonatan Liljedahl <lijon@xxxxxxxxxxxx> wrote:
>>>>> sclang does not have Timers, in the usual sense of timers in other
>>>>> languages, like NSTimer in obj-c.
>>>>> 
>>>>> There is someClock.sched, but those are not cancelable.
>>>> 
>>>> Well, there is SkipJack. It survives CmdPeriod, but could easily be
>>>> extended to not...
>>>> 
>>>> _______________________________________________
>>>> sc-dev mailing list
>>>> 
>>>> info (subscription, etc.): http://www.beast.bham.ac.uk/research/sc_mailing_lists.shtml
>>>> archive: https://listarc.bham.ac.uk/marchives/sc-dev/
>>>> search: https://listarc.bham.ac.uk/lists/sc-dev/search/
>>> 
>>> 
>>> 
>>> --
>>> /Jonatan
>>> http://kymatica.com
>>> 
>>> _______________________________________________
>>> sc-dev mailing list
>>> 
>>> info (subscription, etc.): http://www.beast.bham.ac.uk/research/sc_mailing_lists.shtml
>>> archive: https://listarc.bham.ac.uk/marchives/sc-dev/
>>> search: https://listarc.bham.ac.uk/lists/sc-dev/search/
>> 
>> 
>> _______________________________________________
>> sc-dev mailing list
>> 
>> info (subscription, etc.): http://www.beast.bham.ac.uk/research/sc_mailing_lists.shtml
>> archive: https://listarc.bham.ac.uk/marchives/sc-dev/
>> search: https://listarc.bham.ac.uk/lists/sc-dev/search/
> 
> 
> 
> -- 
> /Jonatan
> http://kymatica.com
> 
> _______________________________________________
> sc-dev mailing list
> 
> info (subscription, etc.): http://www.beast.bham.ac.uk/research/sc_mailing_lists.shtml
> archive: https://listarc.bham.ac.uk/marchives/sc-dev/
> search: https://listarc.bham.ac.uk/lists/sc-dev/search/

_______________________________________________
sc-dev mailing list

info (subscription, etc.): http://www.beast.bham.ac.uk/research/sc_mailing_lists.shtml
archive: https://listarc.bham.ac.uk/marchives/sc-dev/
search: https://listarc.bham.ac.uk/lists/sc-dev/search/