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Finding DU-Paths for Testing of Multi-Tasking Real-Time Systems using WCET Analysis
Publication Type:
Conference/Workshop Paper
Venue:
Seventh International Workshop on Worst-Case Execution Time Analysis, (WCET2007)
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 corruption can be detected by analyzing the relations between 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 analysis of preemptive multi-tasking real-time software. By deriving temporal attributes of each access to shared data using WCET analysis, and combining this information with the real-time schedule information, our method also detects inter-task shared variable dependencies.
Bibtex
@inproceedings{Sundmark1118,
author = {Daniel Sundmark and Anders Pettersson and Christer Sandberg and Andreas Ermedahl and Henrik Thane},
title = {Finding DU-Paths for Testing of Multi-Tasking Real-Time Systems using WCET Analysis},
month = {July},
year = {2007},
booktitle = {Seventh International Workshop on Worst-Case Execution Time Analysis, (WCET2007)},
url = {http://www.es.mdu.se/publications/1118-}
}