Abstract: Based on the analysis of a real-time embedded operating system μC/OS-II which is open source, some improvements about schedule mechanism are put forward to support more than 64 scheduling tasks. Divided into different groups, different schedule algorithms can be adopted according to the requirements of practical application. Implementation of the round-robin scheduling and priority schedule in local are put forward. Meanwhile, priority-based schedule algorithm is kept in the whole.

Key words: embedded operating system, real-time, multi-task, schedule algorithm

摘要： 基于源码公开的实时嵌入式操作系统μC/OS-II及对内核的分析，该文对μC/OS-II的调度算法提出了改进，即扩充了任务数目，采用了任务分类的方法，使其能支持多于64个任务的调度。并可根据实际要求，对任务分组采用不同的调度算法，同时在整体上保持优先级调度模式。该文给出了局部时间片轮转调度和优先级调度算法的实现。

关键词: 嵌入式操作系统, 实时, 多任务, 调度算法

CLC Number: 

• TP316