Randomized Two-Process Wait-Free Test-and-Set

Details Randomized Two-Process Wait-Free Test-and-Set Randomized Two-Process Wait-Free Test-and-Set

2001-06-28

arxiv.org/abs/cs/0106056v2

Computer Science

Distributed, Parallel, and Cluster Computing

9 pages, 4 figures, LaTeX source; Submitted

Scientific paper

We present the first explicit, and currently simplest, randomized algorithm for 2-process wait-free test-and-set. It is implemented with two 4-valued single writer single reader atomic variables. A test-and-set takes at most 11 expected elementary steps, while a reset takes exactly 1 elementary step. Based on a finite-state analysis, the proofs of correctness and expected length are compressed into one table.

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