A study and toolkit of CHECK-THEN-ACT idioms of Java concurrent collections.
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| Title: | A study and toolkit of CHECK-THEN-ACT idioms of Java concurrent collections. |
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| Authors: | Lin, Yu1, Dig, Danny2 |
| Source: | Software Testing: Verification & Reliability. Jun2015, Vol. 25 Issue 4, p397-425. 29p. |
| Subjects: | Java programming language, Concurrent error detection, Threads (Computer programs), Idioms, Computer programmers |
| Abstract: | Concurrent collections are widely used in concurrent programs. However, programmers can misuse these concurrent collections when composing two operations where a check on the collection (e.g., collection contains an element) precedes an action (e.g., inserting an element). Unless the whole composition is atomic, the program contains an atomicity violation bug. This paper presents an extensive empirical study of CHECK-THEN-ACT idioms of Java (Oracle Corporation, Redwood, CA, USA) concurrent collections. We analyze 28 widely used open-source Java projects (comprising 6.4 million lines of code) that use Java concurrent collections. We study the correct and incorrect use of idioms and the evolution of the programs with respect to idioms. Our tool, CTADETECTOR, detects and corrects misused idioms. CTADETECTOR discovered 60 bugs that were confirmed and fixed by developers. This shows that CHECK-THEN-ACT idioms are commonly misused in practice, and correcting them is important. Copyright © 2015 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR] |
| Copyright of Software Testing: Verification & Reliability is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Abstract: | Concurrent collections are widely used in concurrent programs. However, programmers can misuse these concurrent collections when composing two operations where a check on the collection (e.g., collection contains an element) precedes an action (e.g., inserting an element). Unless the whole composition is atomic, the program contains an atomicity violation bug. This paper presents an extensive empirical study of CHECK-THEN-ACT idioms of Java (Oracle Corporation, Redwood, CA, USA) concurrent collections. We analyze 28 widely used open-source Java projects (comprising 6.4 million lines of code) that use Java concurrent collections. We study the correct and incorrect use of idioms and the evolution of the programs with respect to idioms. Our tool, CTADETECTOR, detects and corrects misused idioms. CTADETECTOR discovered 60 bugs that were confirmed and fixed by developers. This shows that CHECK-THEN-ACT idioms are commonly misused in practice, and correcting them is important. Copyright © 2015 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 09600833 |
| DOI: | 10.1002/stvr.1567 |
