嵌入式实时操作系统Nucleus中线程控制部件的实现方法  

The Implementation Method of Thread Control Component in the Embedded Real-time Operating System Nucleus

作　　者：魏振华[1] 洪炳熔[1] 乔永强[2] 蔡则苏[1] 彭俊杰[1] 

机构地区：[1]哈尔滨工业大学计算机科学与工程系,黑龙江哈尔滨150001 [2]中国航天科技集团九院,陕西西安710075

出　　处：《计算机应用研究》2003年第4期97-99,共3页Application Research of Computers

基　　金：国防科工委"十五"预研基金资助项目(417010402)

摘　　要：随着嵌入式系统的飞速发展,Nucleus实时操作系统已成为嵌入式应用的潮流和方向。深入全面地探讨了Nucleus中线程控制的实现方法。首先,对Nucleus的内核进行了概述,并给出了各模块之间的联系;其次,阐述了Nucleus的任务调度算法、优先级表示及其计算方法;最后,讨论了Nucleus的中断实现和临界区的保护方法。With the embedded system developing rapidly, the realtime operating system Nucleus has been the trend and direction of embedded application. The implementation method of thread control in Nucleus is described in this paper. Firstly, the microkernel of Nucleus is introducedSecondly, the task scheduling algorithm, priority presentation and its computation method is explainedFinally,the interrupt implementation and the critical section protection is discussed.

关 键 词：嵌入式系统 任务调度 优先级 临界区 

分 类 号：TP311.5[自动化与计算机技术—计算机软件与理论]