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DOI: 10.4230/OASIcs.WCET.2007.1191
URN: urn:nbn:de:0030-drops-11914
URL: http://drops.dagstuhl.de/opus/volltexte/2007/1191/
Sundmark, Daniel ; Petterson, Anders ; Sandberg, Christer ; Ermedahl, Andreas ; Thane, Henrik

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

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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.

BibTeX - Entry

@InProceedings{sundmark_et_al:DSP:2007:1191,
  author =	{Daniel Sundmark and Anders Petterson and Christer Sandberg and Andreas Ermedahl and Henrik Thane},
  title =	{Finding DU-Paths for Testing of Multi-Tasking Real-Time Systems using WCET Analysis},
  booktitle =	{7th Intl. Workshop on Worst-Case Execution Time (WCET) Analysis},
  year =	{2007},
  editor =	{Christine Rochange},
  publisher =	{Internationales Begegnungs- und Forschungszentrum f{"u}r Informatik (IBFI), Schloss Dagstuhl, Germany},
  address =	{Dagstuhl, Germany},
  URL =		{http://drops.dagstuhl.de/opus/volltexte/2007/1191},
  annote =	{Keywords: Testing, Real-time systems, WCET analysis, data flow},
}

Keywords: Testing, Real-time systems, WCET analysis, data flow
Seminar: 7th International Workshop on Worst-Case Execution Time Analysis (WCET'07)
Issue date: 2007
Date of publication: 13.11.2007

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