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An Evaluation of Safety-Critical Java on a Java Processor

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Title: An Evaluation of Safety-Critical Java on a Java Processor
Authors: Juan Ricardo Rios, Martin Schoeberl
Contributors: The Pennsylvania State University CiteSeerX Archives
Source: http://www.jopdesign.com/doc/jopscjeval.pdf.
Collection: CiteSeerX
Subject Terms: Index Terms—Real-time systems, Embedded systems, Java, Safety-critical systems, Safety-critical Java, Java processor
Description: —The safety-critical Java (SCJ) specification provides a restricted set of the Java language intended for applications that require certification. In order to test the specification, implementations are emerging and the need to evaluate those implementations in a systematic way is becoming important. In this paper we evaluate our SCJ implementation which is based on the Java Optimized Processor JOP and we measure different performance and timeliness criteria relevant to hard real-time systems. Our implementation targets Level 0 and Level 1 of the specification and to test it we use a series of micro benchmarks, an application-based benchmark, and a reduced set of a SCJ technology compatibility kit. We evaluate the accuracy of periods, linear-time memory allocation, aperiodic event handling, dispatch latency for interrupts, context switch preemption latency, and synchronization.
Document Type: text
File Description: application/pdf
Language: English
Relation: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.698.3801; http://www.jopdesign.com/doc/jopscjeval.pdf
Availability: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.698.3801
http://www.jopdesign.com/doc/jopscjeval.pdf
Rights: Metadata may be used without restrictions as long as the oai identifier remains attached to it.
Accession Number: edsbas.7B41E81F
Database: BASE
Description
Abstract:—The safety-critical Java (SCJ) specification provides a restricted set of the Java language intended for applications that require certification. In order to test the specification, implementations are emerging and the need to evaluate those implementations in a systematic way is becoming important. In this paper we evaluate our SCJ implementation which is based on the Java Optimized Processor JOP and we measure different performance and timeliness criteria relevant to hard real-time systems. Our implementation targets Level 0 and Level 1 of the specification and to test it we use a series of micro benchmarks, an application-based benchmark, and a reduced set of a SCJ technology compatibility kit. We evaluate the accuracy of periods, linear-time memory allocation, aperiodic event handling, dispatch latency for interrupts, context switch preemption latency, and synchronization.