【摘要】 使用实时内核时,优先级的反转问题是实时系统中出现得最多的问题。为了解决这一问题,操作系统必须动态地提升获得资源的任务的优先级。该文分析了μC/OS-II的任务调度机制,提出了一种基于优先级继承提升的策略用以解决优先级的反转问题,从而优化了实时操作系统的任务调度,增强了其对高优先级任务调度的实时性。更多还原

【Abstract】 Priority inversion is the most common problem occurring in real-time system when using a real-time kernel.In order to solve the problem,the operation system must dynamically hoist the task priority which occupies the resource.This paper analyses the task scheduling principle of μC/OS-II,and then proposes a method based on the priority inheritance and hoist,which solves the problem.It improves the task scheduling of the real-time system and strengthens its real-time performance for the high-priority task.更多还原