On the meaning of modes in uniprocessor real-time systems

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On the meaning of modes in uniprocessor real-time systems

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Symposium on Applied Computing archive
Proceedings of the 2008 ACM symposium on Applied computing table of contents

Fortaleza, Ceara, Brazil

POSTER SESSION: Real-time systems: poster papers table of contents

Pages 324-325

Year of Publication: 2008

ISBN:978-1-59593-753-7

Authors

Paulo Martins	Chaminade University, Honolulu- Hawai'i
Alan Burns	The University of York, York - United Kingdom

Sponsor

SIGAPP: ACM Special Interest Group on Applied Computing

Publisher

ACM New York, NY, USA

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ABSTRACT

One way to manage the complexity of the design and the implementation of large and adaptive real-time systems is to partition the design into modes of operation. This approach allows designers to break down the complexity of these systems into a number of layers of control (modes), which are then multiplexed in time (by means of mode changes) during system operation. However, due to a lack of a uniform view of modes within the literature, the task of successfully designing complex real-time systems with modes of operation becomes more difficult, if not compromised [1]. In this paper we consider the following recurring issues of modes in real-time systems, both from the application and design concerns: 1) What is a mode of operation, i.e. which features are exclusive to a particular mode of operation that allow its identification and distinction from other modes? 2) What can be understood by the concept of mode changes in realtime systems? The examination of these issues is lacking in the literature and will facilitate the analysis, design and construction of the next generation of complex real-time systems.

REFERENCES

Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.

	1	Pedro (Martins), P. 1999. Schedulability of mode changes in flexible real-time distributed systems. Ph.D thesis, YCST-99-11, University of York, Department of Computer Science.
	2	Pedro (Martins), P., and Burns, A. 1998. Schedulabillity analysis for mode changes in real-time systems. In Proceedings of the 10th Euromicro Workshop on Real-Time Systems. Berlin, Germany: IEEE Computer Society Press.
	3	Jorge Real , Alfons Crespo, Mode Change Protocols for Real-Time Systems: A Survey and a New Proposal, Real-Time Systems, v.26 n.2, p.161-197, March 2004 [doi>10.1023/B:TIME.0000016129.97430.c6]
	4	Tindell, K. W., Burns, A., and A. J. Wellings. 1992. Mode Change in Priority Pre-emptively Scheduled Systems. Report RTSS92-TBW, Computer Science, The University of York.