Sentry

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Sentry: A novel hardware implementation of classic operating system mechanisms

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International Symposium on Computer Architecture archive
Proceedings of the 9th annual symposium on Computer Architecture table of contents

Austin, Texas, United States

Pages: 140 - 147

Year of Publication: 1982

Also published in ...

Author

Gene C. Barton

Department of Electrical Engineering, United States Military Academy, West Point, N.Y.

Sponsors

IEEE-CS : Computer Society
SIGARCH: ACM Special Interest Group on Computer Architecture

Publisher

IEEE Computer Society Press Los Alamitos, CA, USA

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Downloads (6 Weeks): 1, Downloads (12 Months): 7, Citation Count: 0

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ABSTRACT

A hardware protection mechanism called the Sentry is introduced which requires minimal overhead to be invoked and no overhead when providing protection. It is fail-safe, fault tolerant, and can be added to most existing architectures. It provides a convenient low level service suitable as the underlying primitive around which more sophisticated mechanisms can be established.

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	Agerwala, T. K. "Some Extended Semaphore Primitives," Acta Informatica, 8 (1977), pp. 201-220.
	2	Graham, G. Scott and Peter J. Denning. "Protection - Principals and Practice," Proceedings of the Spring Joint Computer Conference (1972), pp. 417-428.
	3	A. Nico Habermann, Synchronization of communicating processes, Communications of the ACM, v.15 n.3, p.171-176, March 1972 [doi>10.1145/361268.361277]
	4	C. A. R. Hoare, Communicating sequential processes, Communications of the ACM, v.21 n.8, p.666-677, Aug. 1978 [doi>10.1145/359576.359585]
	5	Butler W. Lampson, Protection, ACM SIGOPS Operating Systems Review, v.8 n.1, p.18-24, January 1974 [doi>10.1145/775265.775268]
	6	Saltzer, Jerome H. and Michael D. Schroeder. "The Protection of Information in Computer Systems," Proceedings of the IEEE, 63, 9 (Sep 1975), pp. 1278-1308.