Ah thanks for pointing that out, Hans.

m_callbackscheduler() is soooo much more simple than m_pollingscheduler(), I'm wondering what the performance differences are..

Cheers,
Rich


On Sun, Oct 9, 2011 at 4:26 PM, Hans-Christoph Steiner <hans@at.or.at> wrote:

I think that stuff is the polling versus callback scheduling when talking to the audio device.  If you look in the audio preferences, there is a check box that says "use callbacks".  My guess is that will enable m_callbackscheduler().

.hc


On Oct 8, 2011, at 11:39 PM, Rich E wrote:

Hi all,

I've been stepping through the pd source and trying to understand the scheduling system, would anyone who knows mind helping me to this effect?

There are two options that m_mainloop() has for scheduling, m_pollingscheduler() and m_callbackscheduler().  On OS X, I am only getting a hit on m_pollingscheduler, since sched_useaudio = SCHED_AUDIO_POLL.  Does sched_useaudio ever equal SCHED_AUDIO_CALLBACK, which would then cause m_callbackscheduler() to be used instead?

I'm wondering if sched_tick() is ever called from a non-main thread.

Cheers,
Rich
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