[linux-audio-dev] jack_callback <-> rest of the world

[Richard Spindler]

2005/10/30, Lars Luthman <larsl at users.sourceforge.net>:
> It depends on how detailed information you want in the non-RT thread. If
> you just want to say "something happened!" you can use a counter of a
> datatype that you know is read and written atomically (int usually
> works) and increase it every time something happens. The non-RT thread
> can then compare the counter's value to the value it had last time it
> looked at it, and if it's different it knows that something has
> happened.

This would imply busy waiting, right?

related question, what happens if I use the lockfree ringbuffer, and
the non-realtime-thread tries to access it while it's full, how do I
know when to try again?

BTW. @all: thx for all the detailed answers.

-Richard