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arXiv · 1712.09636

Analysis of Concurrent Lock-Free Hash Tries with Constant-Time Operations

Aleksandar Prokopec
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Abstract

Ctrie is a scalable concurrent non-blocking dictionary data structure, with good cache locality, and non-blocking linearizable iterators. However, operations on most existing concurrent hash tries run in O(log n) time. In this technical report, we extend the standard concurrent hash-tries with an auxiliary data structure called a cache. The cache is essentially an array that stores pointers to a specific level of the hash trie. We analyze the performance implications of adding a cache, and prove that the running time of the basic operations becomes O(1).

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Aleksandar Prokopec. 2017-12-27. Analysis of Concurrent Lock-Free Hash Tries with Constant-Time Operations. https://arxiv.org/abs/1712.09636

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