NDLI: An expressive aspect language for system applications with Arachne

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An expressive aspect language for system applications with Arachne

Content Provider	ACM Digital Library
Author	Douence, Rémi Ségura-Devillechaise, Marc Fritz, Thomas Südholt, Mario Loriant, Nicolas Menaud, Jean-Marc
Abstract	C applications, in particular those using operating system level services, frequently comprise multiple crosscutting concerns: network protocols and security are typical examples of such concerns. While these concerns can partially be addressed during design and implementation of an application, they frequently become an issue at runtime, e.g., to avoid server downtime. A deployed network protocol might not be efficient enough and may thus need to be replaced. Buffer overflows might be discovered that imply critical breaches in the security model of an application. A prefetching strategy may be required to enhance performance.While aspect-oriented programming seems attractive in this context, none of the current aspect systems is expressive and efficient enough to address such concerns. This paper presents a new aspect system to provide a solution to this problem. While efficiency considerations have played an important part in the design of the aspect language, the language allows aspects to be expressed more concisely than previous approaches. In particular, it allows aspect programmers to quantify over sequences of execution points as well as over accesses through variable aliases. We show how the former can be used to modularize the replacement of network protocols and the latter to prevent buffer overflows. We also present an implementation of the language as an extension of Arachne, a dynamic weaver for C applications. Finally, we present performance evaluations supporting that Arachne is fast enough to extend high performance applications, such as the Squid web cache.
Starting Page	27
Ending Page	38
Page Count	12
File Format	PDF
ISBN	1595930426
DOI	10.1145/1052898.1052901
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2005-03-14
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	System applications Aspect language Dynamic weaving Sequence pointcut
Content Type	Text
Resource Type	Article

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