10 Nov
2009
10 Nov
'09
3:34 p.m.
fons(a)kokkinizita.net wrote:
So you're just reading it, not waiting on it ?
That indeed
should be 'free'.
Yes, we just need to read it. JACK used to use TSC for that, and HPET
support was introduced as similar low-cost alternative to deal with
variable clock frequencies (important on mobile things) and unsynced
TSC. Use of syscalls is kind of fallback.
Audio hardware (interrupts) act as a waitable time source.