We've reworked the synchronous control functions that govern the
async daemon and in-flight requests for this class. The
shouldAcceptRequests flag represents the readiness state of the
whole engine class. The in-flight async operations consult the
shouldAcceptRequests flag to determine whether they should return
early.
Now the stop() method is solely for setting the locked flag
shouldAcceptRequests=false.
The pair resetAndAssembleFrame()/assemblyCycleComplete manage the
per-assembly cycle state machine, and they don't need to set or
interfere with the shouldAcceptRequests flag.
hayodea
1df43665c3