In our paper at OOPSLA 2003 we discussed the design and implementation of a new atomic keyword as an extension to the Java programming language. It allows programs to perform a series of heap accesses atomically without needing to use mutual exclusion locks. We showed that data structures built using it could perform well and scale to large multi-processor systems. In this paper we extend our system in two ways. Firstly, we show how to provide an explicit \u2018abort\u2019 operation to abandon execution of an atomic block and to automatically undo any updates made within it. Secondly, we show how to perform external I\/O within an atomic block. Both extensions are based on a single \u2018external action\u2019 abstraction, allowing code running within an atomic block to request that a given pre-registered operation be executed outside the block.<\/p>\n","protected":false},"excerpt":{"rendered":"
In our paper at OOPSLA 2003 we discussed the design and implementation of a new atomic keyword as an extension to the Java programming language. It allows programs to perform a series of heap accesses atomically without needing to use mutual exclusion locks. 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