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| Content Provider | ACM Digital Library |
|---|---|
| Author | Madsen, Magnus Møller, Anders Sen, Koushik Andreasen, Esben Tip, Frank |
| Abstract | Many bugs in JavaScript applications manifest themselves as objects that have incorrect property values when a failure occurs. For this type of error, stack traces and log files are often insufficient for diagnosing problems. In such cases, it is helpful for developers to know the control flow path from the creation of an object to a crashing statement. Such crash paths are useful for understanding where the object originated and whether any properties of the object were corrupted since its creation. We present a feedback-directed instrumentation technique for computing crash paths that allows the instrumentation overhead to be distributed over a crowd of users and to reduce it for users who do not encounter the crash. We implemented our technique in a tool, Crowdie, and evaluated it on 10 real-world issues for which error messages and stack traces are insufficient to isolate the problem. Our results show that feedback-directed instrumentation requires 5% to 25% of the program to be instrumented, that the same crash must be observed 3 to 10 times to discover the crash path, and that feedback-directed instrumentation typically slows down execution by a factor 2x-9x compared to 8x-90x for an approach where applications are fully instrumented. |
| Starting Page | 899 |
| Ending Page | 910 |
| Page Count | 12 |
| File Format | |
| ISBN | 9781450339001 |
| DOI | 10.1145/2884781.2884846 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 2016-05-14 |
| Publisher Place | New York |
| Access Restriction | Subscribed |
| Content Type | Text |
| Resource Type | Article |
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