采用了优先级抢占 Preemptive Priority Scheduling
优先级抢占 preemptive priority ; Preptive Priority Scheduling
基于优先级的抢占调度 Preemptive Priority Based Scheduling
任务优先级抢占机制 preemptive multitasking operating system
抢占优先级 preempting priority
竞争状态仅仅有一种情况下产生，在此处中断或（和）优先抢占是充许的并且有一个临界区存在。
Race conditions are only an issue where interrupts and/or preemption are possible and where critical sections exist.
具有RT优先级的调度线程可以一直执行直至阻塞，通过让步自愿放弃控制权，或被具有更高rt优先级的线程抢占。
A dispatched thread with an RT priority is allowed to execute until it blocks, voluntarily relinquishes control by yielding, or is preempted by a thread with a higher RT priority.
最后，在早期的内核中，抢占是不可能的；这意味着如果有一个低优先级的任务在执行，高优先级的任务只能等待它完成。
Finally, preemption wasn't possible in the earlier scheduler; this meant that a lower priority task could execute while a higher priority task waited for it to complete.
应用推荐