worker
The dedicated worker thread driving this eval off-tick (ParallelLane); null for the heartbeat lanes, whose evals run on the (never-interruptible) tick thread. Set once, before the worker starts.
The dedicated worker thread driving this eval off-tick (ParallelLane); null for the heartbeat lanes, whose evals run on the (never-interruptible) tick thread. Set once, before the worker starts.