A true positives theorem for a static race detector

RacerD is a static race detector that has been proven to be effective in engineering practice: it has seen thousands of data races fixed by developers before reaching production, and has supported the migration of Facebook's Android app rendering infrastructure from a single-threaded to a multi...

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Vydáno v:Proceedings of ACM on programming languages Ročník 3; číslo POPL; s. 1 - 29
Hlavní autoři: Gorogiannis, Nikos, O'Hearn, Peter W., Sergey, Ilya
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York, NY, USA ACM 02.01.2019
Témata:
Concurrent programming structures
General programming languages
Language features
Program analysis
Program reasoning
Semantics and reasoning
Software and its engineering
Software notations and tools
Theory of computation
Abstract Interpretation
Race Freedom
Concurrency
Static Analysis
ISSN:2475-1421, 2475-1421
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Shrnutí:RacerD is a static race detector that has been proven to be effective in engineering practice: it has seen thousands of data races fixed by developers before reaching production, and has supported the migration of Facebook's Android app rendering infrastructure from a single-threaded to a multi-threaded architecture. We prove a True Positives Theorem stating that, under certain assumptions, an idealized theoretical version of the analysis never reports a false positive. We also provide an empirical evaluation of an implementation of this analysis, versus the original RacerD. The theorem was motivated in the first case by the desire to understand the observation from production that RacerD was providing remarkably accurate signal to developers, and then the theorem guided further analyzer design decisions. Technically, our result can be seen as saying that the analysis computes an under-approximation of an over-approximation, which is the reverse of the more usual (over of under) situation in static analysis. Until now, static analyzers that are effective in practice but unsound have often been regarded as ad hoc; in contrast, we suggest that, in the future, theorems of this variety might be generally useful in understanding, justifying and designing effective static analyses for bug catching.
ISSN:2475-1421
2475-1421
DOI:10.1145/3290370