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Paper Details

Higher-Order Concurrency in Java

Authors: Demaine, Erik D.


In this paper we examine an extension to Hoare's Communicating Sequential Processes model called higher-order concurrency, proposed by Reppy. In this extension, communication algorithms (or events) are first-class objects and can be created and manipulated dynamically. In addition, threads are automatically garbage collected and channels are first-class, that is, they can be passed over other channels. We describe the design of a Java package that implements the main features of higher-order concurrency, with similar ease-of-use to Reppy's Concurrent ML system. Our implementation can be easily extended to use a distributed system, which is a major limitation with Concurrent ML. We also hope to bring the idea of higher-order concurrency to a wider audience, since it is extremely powerful and flexible, but currently only well known to the programming-languages community.


Proceedings of WoTUG-20: Parallel Programming and Java, André W. P. Bakkers, 1997, pp 34 - 47 published by IOS Press, Amsterdam

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