[PD] timing question

[Yvan Vander Sanden]

hi.

I am currently working on an external that generates rhythmic pulses in 
a certain way. But I was wondering if I could run into problems with 
calling usleep in an external. Alternatively, I suppose i could use a pd 
timer as an input and let it give a bang each milli-second, but that 
doesn't seem like a good idea to me.

I suppose externals are all separate threads, or am I wrong about that?

Regards,

yvan vander sanden