> > sufficient for what? > Sufficient to not lock people out of their machine.
Sfront is more paranoid than this -- it uses signals to implement a watchdog timer which, if it goes off, relinquishes SCHED_FIFO. The timer gets reset every time sfront returns from blocking I/O. This catches the case of your program computing audio just "fast enough" to avoid overruns, but not fast enough to cause blocking on audio reads or writes. It also catches naive SAOL programmers who write infinite loops ... See the code in sfront/src/lib/asys/linux.c for more details, search for the SCHED_FIFO function primitives to see what's going on ... ------------------------------------------------------------------------- John Lazzaro -- Research Specialist -- CS Division -- EECS -- UC Berkeley lazzaro [at] cs [dot] berkeley [dot] edu www.cs.berkeley.edu/~lazzaro -------------------------------------------------------------------------
