FlexSync: An Aspect-Oriented Approach to Java Synchronization

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Executive Summary

Designers of concurrent programs are faced with many choices of synchronization mechanisms, among which clear functional trade-offs exist. Making synchronization customizable is highly desirable as different deployment scenarios of the same program often place different precedence on synchronization choices. Unfortunately, such customizations cannot be accomplished in the conventional non-modular implementation of synchronization. To enable customizability, the authors present FlexSync, an aspect oriented synchronization library, to enable the modular reasoning of synchronization and to resolve the coupling between synchronization intentions and mechanisms in Java systems.

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