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A Safe Algorithm for Resolving OR Deadlocks
July 2003 (vol. 29 no. 7)
pp. 608-622

Abstract—Deadlocks in the OR model are usually resolved by aborting a deadlocked process. Prior algorithms for the same model sometimes abort nodes needlessly wasting computing resources. This paper presents a new deadlock resolution algorithm for the OR model that satisfies the following correctness criteria: (Safety) the algorithm does not resolve false deadlocks; (Liveness) the algorithm resolves all deadlocks in finite time. The communication cost of the algorithm is similar to that of previous nonsafe proposals. The theoretical cost has been validated by simulation. In addition, different algorithm initiation alternatives have been analyzed in order to reduce the latency of deadlocks.

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Index Terms:
Deadlock detection/resolution, OR request model, distributed systems, distributed algorithms.
Citation:
Jes? Villadangos, Federico Fari?, Jos? Ram? Gonz?lez de Mend?vil, Jos? Ram? Garitagoitia, Alberto C?rdoba, "A Safe Algorithm for Resolving OR Deadlocks," IEEE Transactions on Software Engineering, vol. 29, no. 7, pp. 608-622, July 2003, doi:10.1109/TSE.2003.1214325
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