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Contextual debugging and analysis of multithreaded applications

✍ Scribed by BEDNORZ, M.; GWOZDOWSKI, A.; ZIELIŃSKI, K.

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
777 KB
Volume
9
Category
Article
ISSN
1040-3108

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✦ Synopsis

Multithreaded programs are especially difficult to test and debug. The aim of the paper is to present a new concept of multithreaded program analysis and debugging based on contextual visualisation of the program components that influence thread execution. For this purpose, a dedicated software package called MTV (multithreading viewer) has been designed and implemented. It performs above the run-time library level, and hence only a programmer's view of multiple threads of control execution may be analyzed. The paper presents tested program code instrumentation, communication and synchronization between the instrumented program and MTV. Next, a general concept of contextual visualisation of multithreaded programs has been elaborated. A scheme of the MTV cooperation with the monitored program is discussed. The user interface has been described. A representation of the multithreaded program state has been shown, and the capability of MTV for certain classes of error recognition has been specified and illustrated by a few examples. These examples have been not intended to be exhaustive, but they rather indicate the opportunities to exploit MTV for analysis of complex applications. Short evaluation of the proposed contextual visualisation techniques with application to multithreaded program analysis concludes the paper.

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