实时操作系统事件响应机制剖析  

Analysis of Event Response Mechanism of Real-Time Operating System

作　　者：刘长勇 王宜怀[3] LIU Changyong;WANG Yihuai(Department of Mathematics and Computer Science,Wuyi University,Wuyishan 354300,China;Fujian Key Laboratory of Big Data Application and Intellectualization for Tea Industry,Wuyi University,Wuyishan 354300,China;School of Computer Science and Technology,Soochow University,Suzhou 215006,China)

机构地区：[1]武夷学院数学与计算机学院,福建武夷山354300 [2]武夷学院福建省茶产业大数据应用与智能化重点实验室,福建武夷山354300 [3]苏州大学计算机科学与技术学院,江苏苏州215006

出　　处：《吉林大学学报（信息科学版）》2024年第4期717-725,共9页Journal of Jilin University（Information Science Edition）

基　　金：福建省自然科学基金资助项目(2022J011202)。

摘　　要：为了能清晰理解事件的工作原理与机制,通过分析事件在实时操作系统中的作用、响应原理及流程,基于KL36微控制器采用类PC机的printf输出法,从调度过程时序、响应时间性能等方面剖析了mbedOS的事件响应机制。实验结果表明,通过printf函数能将事件响应过程的线程地址、队列地址,队列内容、线程进出队列情况以及事件位等信息直观输出,为读者从底层理解mbedOS的事件响应原理和流程提供便利,也为分析mbedOS的其他同步与通信手段的脉络结构提供方法借鉴。In order to clearly understand the working principle and mechanism of events,to analyze the role,response principle,and response process of events in real-time operating systems,based on the KL36 microcontroller,a PC-like printf output method is adopted to analyze the event response mechanism of mbedOS from the aspects of scheduling process timing,response time performance,etc.The experimental results show that the printf function can intuitively output information such as thread address,queue address,queue content,thread in and out queue status,and event bits during the event response process.This provides convenience for readers to understand the event response principle and process of mbedOS from the bottom layer,and also provides a method reference for analyzing the context structure of other synchronization and communication methods of mbedOS.

关 键 词：实时操作系统 事件响应机制 printf 输出 mbedOS 实时操作系统 KL36 芯片 

分 类 号：TP316.2[自动化与计算机技术—计算机软件与理论]