Infoscience

Conference paper

The Weakest Failure Detectors to Boost Obstruction-Freedom

This paper determines necessary and sufficient conditions to implement wait-free and non-blocking contention managers in a shared memory system. The necessary conditions hold even when universal objects (like compare-and-swap) or random oracles are available, whereas the sufficient ones assume only registers. We show that failure detector <>P is the weakest to convert any obstruction-free algorithm into a wait-free one, and Omega*, a new failure detector which we introduce in this paper, and which is strictly weaker than <>P but strictly stronger than Omega, is the weakest to convert any obstruction-free algorithm into a non-blocking one.

    Reference

    • LPD-CONF-2006-041

    Record created on 2006-09-22, modified on 2016-08-08

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