Practical Non-blocking Unordered Lists

This paper introduces new lock-free and wait-free unordered linked list algorithms. The composition of these algorithms according to the fast-pathslow-path methodology, a recently devised approach to creating fast wait-free data structures, is nontrivial, suggesting limitations to the applicability of the fast-path-slow-path methodology. The list algorithms introduced in this paper are shown to scale well across a variety of benchmarks, making them suitable for use both as standalone lists, and as the foundation for wait-free stacks and non-resizable hash tables.