Domain/OS uid_$t
Unique Identifiers, or UIDs, are the fundamental object in Apollo Domain/OS.
They are composed of a timestamp and a machine (node) number, and therefore
every time you call uid_$gen, you get a guaranteed unique object. Domain
uses these to identify everything from filesystem objects to processes to
object types and traits. They are defined in <apollo/base.h>.
31 16 15 0
+----------------------------------+
|CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC| .clock
+--------+--------+----------------+
|iiii----|----NNNN|NNNNNNNNNNNNNNNN| .node
+--------+--------+----------------+
C..C - Top 32-bits of clock (4 mSec units)
iiii - A counter if more than one UID is generated
in one four-millisecond interval
N..N - Node ID