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DOI: 10.4230/OASIcs.WCET.2007.1191

Finding DU-Paths for Testing of Multi-Tasking Real-Time Systems using WCET Analysis

Authors: Daniel Sundmark, Anders Petterson, Christer Sandberg, Andreas Ermedahl, and Henrik Thane

Published in: OASIcs, Volume 6, 7th International Workshop on Worst-Case Execution Time Analysis (WCET'07) (2007)

Abstract

Memory corruption is one of the most common software failures. For sequential software and multi- tasking software with synchronized data accesses, it has been shown that program faults causing memory cor- ruption can be detected by analyzing the relations be- tween defines and uses of variables (DU-based testing). However, such methods are insufficient in preemptive systems, since they lack the ability to detect inter-task shared variable dependencies. In this paper, we propose the use of a system level shared variable DU analy- sis of preemptive multi-tasking real-time software. By deriving temporal attributes of each access to shared data using WCET analysis, and combining this infor- mation with the real-time schedule information, our method also detects inter-task shared variable depen- dencies. The paper also describes how we extended the SWEET tool to derive these temporal attributes.

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Daniel Sundmark, Anders Petterson, Christer Sandberg, Andreas Ermedahl, and Henrik Thane. Finding DU-Paths for Testing of Multi-Tasking Real-Time Systems using WCET Analysis. In 7th International Workshop on Worst-Case Execution Time Analysis (WCET'07). Open Access Series in Informatics (OASIcs), Volume 6, pp. 1-6, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{sundmark_et_al:OASIcs.WCET.2007.1191,
  author =	{Sundmark, Daniel and Petterson, Anders and Sandberg, Christer and Ermedahl, Andreas and Thane, Henrik},
  title =	{{Finding DU-Paths for Testing of Multi-Tasking Real-Time Systems using WCET Analysis}},
  booktitle =	{7th International Workshop on Worst-Case Execution Time Analysis (WCET'07)},
  pages =	{1--6},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-939897-05-7},
  ISSN =	{2190-6807},
  year =	{2007},
  volume =	{6},
  editor =	{Rochange, Christine},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.WCET.2007.1191},
  URN =		{urn:nbn:de:0030-drops-11914},
  doi =		{10.4230/OASIcs.WCET.2007.1191},
  annote =	{Keywords: Testing, Real-time systems, WCET analysis, data flow}
}

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Finding DU-Paths for Testing of Multi-Tasking Real-Time Systems using WCET Analysis

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