针对实时嵌入式操作系统与Internet结合进行的内核改进  

Improvement of Kernel with Combination of Embedded Real Time Operation System and Internet

作　　者：薛玲[1] 

机构地区：[1]泰山职业技术学院信息工程系,山东泰安271000

出　　处：《山东科技大学学报（自然科学版）》2008年第5期100-104,110,共6页Journal of Shandong University of Science and Technology(Natural Science)

摘　　要：嵌入式设备与Internet的结合代表着嵌入式系统和网络技术的真正未来。μC/OS-II是一个源代码公开的实时嵌入式操作系统,根据其内核优先权分配的特点,对其任务调度算法的函数进行了一定的优化和改进,使之更好地应用于"网络服务"这一重大特点。主要研究成果:1)对其任务调度算法进行了一定的优化和改进,实现了局部进程之间的时间片轮转;而在整体上,还可继续保持优先权的调度模式。2)利用操作系统的进程间通信方法,在分配和释放操作时,通过在用于分配存储器缓存的函数中加入了一定的信号量控制,实现对Nbuf资源进行统一调配,在一定程度上避免了死锁发生的可能。The combination of the embedded devices and Internet represents the real future of embedded systems and network technology. μC/OS-Ⅱ is an embedded real-time operating system with the open source codes. According to the characteristics of its kernel priority allocation, the function of task scheduling algorithm is, to a certain extent, optimized and improved so as to give better services for the network. The main research results are： 1） The task scheduling algorithm is, to a certain extent, optimized and improved and a partial-time process between the Webs is achieved; but on the whole, the scheduling mode of priority can still be maintained. 2） By means of the communication method between the processes of operation system, at the time of allocation and release of the operation, we realized the unified deployment of ＂Nbuf＂ resources by adding a certain amount of signal control in the function for the allocation of memory cache, avoiding, to a certain extent, the possibility of a deadlock.

关 键 词：嵌入式 操作系统 任务调度算法 网络协议 

分 类 号：TP316.2[自动化与计算机技术—计算机软件与理论]