Thanks Miller. That brings up one more question.. ;-)

In Scheme for Max, the way I do it is I keep a hash-table in C going with keys that are created on Scheme delay calls, so that one can cancel clocks by fetching them from the hashtable. In Max, there's a cross-platform hash-table implementation that I'm using. Is there something similar for Pd, or if not, is there an approach you would recommend for keeping a key-value store in C for the clocks by a symbolic key? I guess a good question might be if this is even necessary, given there can't be *that* many clocks scheduled for the future. And association list type thing might do just as well.

thanks for the help, it's going well, now that I can finally work on it! ought to have a first alpha folks can play with in the next couple of weeks.

iain

On Sun, Jun 6, 2021 at 5:36 PM Miller Puckette <msp@ucsd.edu> wrote:

clock() is the only mechanism - for repeats, the easiest thing is often
to just re-use a clock() and re-set it each time it goes off (as in
the metro obejct). You can indeed create clock obejcts on the fly -
that's what pipe does. But you'll want to keep track of them so you can
cancel them if the owning object goes away.

cheers
M

On Sun, Jun 06, 2021 at 05:16:09PM -0700, Iain Duncan wrote:
> Ah fantastic, thanks. I was looking in pipe and not seeing it, but was
> probably just lost in other new details and not seeing the forest for the
> trees. :-)
>
> Couple of follow ups:
> - is there a separate facility for making a repeated callback (ie not
> one-shot), or does one just do both with clock?
> - is it safe to make clocks as we need them (ie during a method call, not
> necessarily at object instantiation time), or is this the kind of thing
> where for real time use one needs to make a clock pool and a pool manager
> and all that?
>
> thanks!
> iain
>
> On Sun, Jun 6, 2021 at 5:12 PM Miller Puckette <msp@ucsd.edu> wrote:
>
> > Yep, clock_delay() . Simples example is in Pd's "delay" object, x_time.c
> >
> > cheers
> > Miller
> >
> > On Sun, Jun 06, 2021 at 04:21:46PM -0700, Iain Duncan wrote:
> > > Hi folks, I'm hoping someone can point me in the right direction here.
> > I'm
> > > porting Scheme for Max to pure data and I'm stuck figuring out how to get
> > > delayed functions going. In Max, the SDK has a facility to make register
> > a
> > > callback to executed at some point in the future, a few different ways.
> > Is
> > > there a Pd equivalent, and if so, could anyone point me at resources or
> > > code for it? I basically just need to be able to have a callback fire
> > off
> > > at the right time with one argument, which can be void pointer to the
> > rest
> > > of the stuff i want to get.
> > >
> > > thanks!
> > > iain
> >
> > > _______________________________________________
> > > Pd-dev mailing list
> > > Pd-dev@lists.iem.at
> > >
> > https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.puredata.info_listinfo_pd-2Ddev&d=DwICAg&c=-35OiAkTchMrZOngvJPOeA&r=XprZV3Fxus2L1LCw80hE4Q&m=uekrR-wLMB9CDNku0beRkRmoSJoExinRbBSlb0UQknQ&s=98jkGlO1FFE0Ea5fhSopCbZt6bmZH580Y0IUfgX4Rwk&e=
> >
> >
> > --
> >

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