A debugging tool for distributed systems

Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation Pub Date : 1993-10-19 DOI:10.1109/TENCON.1993.319956

H. Scholten, J. Posthuma

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引用次数: 11

Abstract

This paper describes parts of the design of a debugger for a distributed real-time multimedia system. Emphasis lies on the distributed aspect of debugging, which means that attention is paid to the external behaviour of the processes. This type of debugging is useful to find communication or synchronization errors. However, experience shows that this is not enough: the debugger must also provide hooks for the user to use traditional sequential debuggers. This type of debugging focuses on the internal behaviour - or internal logic - of processes. For the sequential debugging part a normal debugger like GDB can be taken. Three key elements of the debugger are events, filters and recognizers. By definition events are the lowest level of system activity that may be observed by the event debugger. Filters are applied to remove events from the stream of events produced by the debuggee that are of no interest for the programmer. Recognizers are used to recognize behaviour -right or wrong- of the system. By combining events, different levels of abstraction are introduced, thus alleviating the task of the programmer.<>

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分布式系统的调试工具

本文介绍了分布式实时多媒体系统调试器的部分设计。重点在于调试的分布式方面，这意味着要注意进程的外部行为。这种类型的调试对于查找通信或同步错误非常有用。然而，经验表明，这是不够的:调试器还必须为用户提供挂钩，以便使用传统的顺序调试器。这种类型的调试侧重于进程的内部行为或内部逻辑。对于顺序调试部分，可以使用像GDB这样的常规调试器。调试器的三个关键元素是事件、过滤器和识别器。根据定义，事件是事件调试器可以观察到的最低级别的系统活动。过滤器用于从被调试程序产生的事件流中删除程序员不感兴趣的事件。识别器用于识别系统的行为——正确或错误。通过组合事件，引入了不同层次的抽象，从而减轻了程序员的任务。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation

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