Real-Time Java™ Platform Programming

Periodic Threads without Handlers

Although the default scheduler is fixed-priority preemptive, the RTSJ includes periodic scheduling services in the default priority scheduler (see Chapter 7). Several features of the priority scheduler support periodic scheduling, as listed in Table 12-3.

Table 12-3. Optional features of periodic scheduling

Feature	Description
Feasibility analysis	The implementation may implement feasibility analysis algorithms to support the feasibility methods of the PriorityScheduler class: addToFeasibility, changeIfFeasible, isFeasible, and removeFromFeasibility. If feasibility analysis is not implemented, all loads are treated as feasible.
Deadline aware	The scheduler may notice when threads miss their deadlines. If the scheduler ...