You can (ab)use Pd's own symbol table by storing the clocks in a "fake"
Pd object and bind it to a symbol. But I wouldn't really recommend this...
Alternatively, you can use one of the existing hash table
implementations in C, e. g. the hash table from the "stb" library:
https://github.com/nothings/stb/blob/master/stb_ds.h.
Or use C++ :-)
Christof
On 07.06.2021 03:22, Iain Duncan wrote:
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 <[email protected]
<mailto:[email protected]>> 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 <[email protected]
<mailto:[email protected]>> 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
> > > [email protected] <mailto:[email protected]>
> > >
> >
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