NDLI: A Distributed Real-Time Operating System with Location-Transparent System Calls for Task Management and Inter-task Synchronization

Content Provider	IEEE Xplore Digital Library
Author	Chiba, T. Itami, Y. Yoo, M. Yokoyama, T.
Copyright Year	2011
Abstract	The paper presents a distributed real-time operating system (DRTOS) for hard real-time embedded systems such as automotive control systems. A real-time control application program is usually designed as a set of tasks that cooperate with each other through the mechanism of a real-time operating system. In a distributed embedded control system, location-transparent mechanisms are required because the tasks are allocated to multiple nodes. We have developed a DRTOS that provides location-transparent system calls for task management and inter-task synchronization. The DRTOS is an extension to OSEK OS, which is a standard operating system in the automotive control domain. The DRTOS manages distributed tasks based on the global time supported by the clock synchronization of Flex Ray, which is a real-time network based on a TDMA (Time Division Multiple Access) protocol. By using the DRTOS, we can develop a distributed control application program with location-transparent system calls. We can also reallocate the tasks of the application program just by reconfiguration, without rewriting the source code. The worst case response time of a remote system call of the DRTOS is predictable if the Flex Ray communication is well configured.
Starting Page	1133
Ending Page	1138
File Size	319610
Page Count	6
File Format	PDF
ISBN	9781457721359
DOI	10.1109/TrustCom.2011.154
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-11-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Real time systems Embedded systems Operating systems Distributed systems Automotive electronics Control systems Real-time systems Synchronization Time factors Delay Automotive engineering
Content Type	Text
Resource Type	Article

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