event - Signalable event for concurrent programming
Events are user-signalable objects. The 8 signal bits reserved for userspace (ZX_USER_SIGNAL_0 through ZX_USER_SIGNAL_7) may be set, cleared, and waited upon.
TODO
zx_event_create()
- create an eventzx_object_signal()
- set or clear the user signals on an object
- eventpair - linked pairs of signalable objects