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Erschienen in:
2013 | OriginalPaper | Buchkapitel
Lock-Free Resizeable Concurrent Tries
verfasst von : Aleksandar Prokopec, Phil Bagwell, Martin Odersky
Erschienen in: Languages and Compilers for Parallel Computing
Verlag: Springer Berlin Heidelberg
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This paper describes an implementation of a non-blocking concurrent hash trie based on single-word compare-and-swap instructions in a shared-memory system. Insert, lookup and remove operations modifying different parts of the hash trie can be run completely independently. Remove operations ensure that the unneeded memory is freed and that the trie is kept compact. A pseudocode for these operations is presented and a proof of correctness is given – we show that the implementation is linearizable and lock-free. Finally, benchmarks are presented that compare concurrent hash trie operations against the corresponding operations on other concurrent data structures.