uC/OS-Ⅱ内核超时等待机制的分析与改进  

Analysis and Improvement of Waiting-timeout Mechanism in uC/OS-Ⅱ Kernel

作　　者：韩明峰[1] 李小滨[1] 郑永志[1] 

机构地区：[1]烟台东方电子信息产业股份有限公司,烟台264000

出　　处：《计算机工程》2009年第7期259-260,266,共3页Computer Engineering

摘　　要：分析uC/OS-Ⅱ内核的超时等待机制,证实在一定情况下超时时间间隔不准确,在时间间隔到期的情况下,内核仍有可能返回成功,不符合一般的操作系统原理,且超时等待机制在有附加的挂起操作时,处理效率低下。指出uC/OS-Ⅱ内核的超时等待机制不完善的原因,对不足之处提出改进方法。This paper analyzes the waiting-timeout mechanism of μC/OS-Ⅱ kernel from source code. It indicates waiting-timeout of μC/OS-Ⅱ is not correst in some cases. The kernel can return success while it is time out. System efficiency is low if kernel waiting-timeout mechanism has additional suspension operation. The reason why waiting-timeout mechanism of μC/OS-Ⅱ kernel is not perfect is analyzed. A method is advanced to resolve these problems.

关 键 词：超时等待 资源 挂起 内核 

分 类 号：TP316.2[自动化与计算机技术—计算机软件与理论]