NDLI: Model-based schedulability analysis of safety critical hard real-time Java programs

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Model-based schedulability analysis of safety critical hard real-time Java programs

Content Provider	ACM Digital Library
Author	Bøgholm, Thomas Kragh-Hansen, Henrik Olsen, Petur Larsen, Kim G. Thomsen, Bent
Abstract	In this paper, we present a novel approach to schedulability analysis of Safety Critical Hard Real-Time Java programs. The approach is based on a translation of programs, written in the Safety Critical Java profile introduced in [21] for the Java Optimized Processor [18], to timed automata models verifiable by the Uppaal model checker [23]. Schedulability analysis is reduced to a simple reachability question, checking for deadlock freedom. Model-based schedulability analysis has been developed by Amnell et al. [2], but has so far only been applied to high level specifications, not actual implementations in a programming language. Experiments show that model-based schedulability analysis can result in a more accurate analysis than possible with traditional approaches, thus systems deemed non-schedulable by traditional approaches may in fact be schedulable, as detected by our analysis. Our approach has been implemented in a tool, named SARTS, successfully used to verify the schedulability of a real-time sorting machine consisting of two periodic and two sporadic tasks. SARTS has also been applied on a number of smaller examples to investigate properties of our approach.
Starting Page	106
Ending Page	114
Page Count	9
File Format	PDF
ISBN	9781605583372
DOI	10.1145/1434790.1434807
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2008-09-24
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Schedulability analysis Real-time java Model checking Real-time systems Software verification Java processor
Content Type	Text
Resource Type	Article

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