non real time priority threads

MarinosK

Question might be basic, but want to make sure I get this right. Everything in render() meant to run with real-time priority, but what about (non-audio related / non critical) recurrent pieces of code I want to run with non real time priority? If I spawn a couple of threads from setup() to run in parallel with render(), are they with real-time priority or not? (I reckon not).

giuliomoro

If you spawn regular pthread or std::thread threads, they will start with regular priority and scheduling policy and you can then change them as usual, unless you call a specific __wrap_pthread_... call, they will stay regular Linux threads. If you create them with Bela_createAuxiliaryTask() you are creating a Xenomai thread with SCHED_FIFO and specified priority which is wrapped in a loop and a xenomai condition variable which allows you to schedule it at will in a real-time safe manner (via Bela_scheduleAuxiliaryTask()) from other real-time threads (including the audio thread that render() is called from).