NDLI: An annotation assistant for interactive debugging of programs with common synchronization idioms

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An annotation assistant for interactive debugging of programs with common synchronization idioms

Content Provider	ACM Digital Library
Author	Elmas, Tayfun Tasiran, Serdar Qadeer, Shaz Sezgin, Ali
Abstract	This paper explores an approach to improving the practical usability of static verification tools for debugging synchronization idioms. Synchronization idioms such as mutual exclusion and readers/writer locks are widely-used to ensure atomicity of critical regions. We present an annotation assistant that automatically generates program annotations. These annotations express noninterference between program statements, ensured by the synchronization idioms, and are used to identify atomic code regions. This allows the programmer to debug the use of the idioms in the program. We start by formalizing several well-known idioms by providing an abstract semantics for each idiom. For programs that use these idioms, we require the programmer to provide a few predicates linking the idiom with its realization in terms of program variables. From these, we automatically generate a proof script that is mechanically checked. These scripts include steps such as automatically generating assertions and annotating program actions with them, introducing auxiliary variables and invariants. We have successfully shown the applicability of this approach to several concurrent programs from the literature.
Starting Page	1
Ending Page	11
Page Count	11
File Format	PDF
ISBN	9781605586557
DOI	10.1145/1639622.1639632
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2009-07-19
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Atomicity Synchronization idioms Concurrent programs
Content Type	Text
Resource Type	Article

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