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Flexible Spin-Lock Model for Resource Sharing in Multiprocessor Real-Time Systems

Authors:

Sara Afshar, Moris Behnam, Reinder J. Bril, Thomas Nolte

Research group:

Complex Real-Time Embedded Systems

Publication Type:

Conference/Workshop Paper

Venue:

9th IEEE International Symposium on Industrial Embedded Systems

Abstract

Various approaches can be utilized upon resource locking for mutually exclusive resource access in multiprocessor platforms. So far two conventional approaches exist for dealing with tasks that are blocked on a global resource in a multiprocessor platform. Either the blocked task performs a busy wait, i.e. spins, at the highest priority level until the resource is released, or it is suspended. Although both approaches provide mutually exclusive access to resources, they can introduce long blocking delays to tasks, which may be unacceptable for many industrial applications. In this paper, we propose a general spinbased model for resource sharing in multiprocessor platforms in which the priority of the blocked tasks during spinning can be selected arbitrarily. Moreover, we provide the analysis for two selected spin-lock priorities and we show by means of a general comparison as well as specific examples that these solutions may provide a better performance for higher priority tasks.

Bibtex

@inproceedings{Afshar3582,
author = {Sara Afshar and Moris Behnam and Reinder J. Bril and Thomas Nolte},
title = {Flexible Spin-Lock Model for Resource Sharing in Multiprocessor Real-Time Systems},
month = {June},
year = {2014},
booktitle = {9th IEEE International Symposium on Industrial Embedded Systems},
url = {http://www.es.mdu.se/publications/3582-}
}