2026-07-22T10:53:42Z https://drops.dagstuhl.de/oai

oai:drops-oai.dagstuhl.de:17625 2024-03-06T11:00:09Z ddc:004 open_access

EEMARQ: Efficient Lock-Free Range Queries with Memory Reclamation Sheffi, Gali Ramalhete, Pedro Petrank, Erez safe memory reclamation lock-freedom snapshot concurrency range query Multi-Version Concurrency Control (MVCC) is a common mechanism for achieving linearizable range queries in database systems and concurrent data-structures. The core idea is to keep previous versions of nodes to serve range queries, while still providing atomic reads and updates. Existing concurrent data-structure implementations, that support linearizable range queries, are either slow, use locks, or rely on blocking reclamation schemes. We present EEMARQ, the first scheme that uses MVCC with lock-free memory reclamation to obtain a fully lock-free data-structure supporting linearizable inserts, deletes, contains, and range queries. Evaluation shows that EEMARQ outperforms existing solutions across most workloads, with lower space overhead and while providing full lock freedom. Schloss Dagstuhl – Leibniz-Zentrum für Informatik Gali Sheffi and Pedro Ramalhete and Erez Petrank 2023 Is Part Of LIPIcs, Volume 253, 26th International Conference on Principles of Distributed Systems (OPODIS 2022) InProceedings Text doc-type:ResearchArticle publishedVersion application/pdf doi:10.4230/LIPIcs.OPODIS.2022.5 urn:nbn:de:0030-drops-176253 https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.OPODIS.2022.5 eng https://creativecommons.org/licenses/by/4.0/legalcode