[PD-dev] Creating delayed functions in Pd external?

Miller Puckette msp at ucsd.edu
Mon Jun 7 02:36:00 CEST 2021


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 at 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
> >
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> >
> > --
> >

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