Group Mutual Exclusion Based on Priorities

Authors

  • Karina M. Cenci Laboratorio de Investigación en Sistemas Distribuidos, Universidad Nacional del Sur, Bahía Blanca, Argentina
  • Jorge Raúl Ardenghi Laboratorio de Investigación en Sistemas Distribuidos, Universidad Nacional del Sur, Bahía Blanca, Argentina

Keywords:

Mutual Exclusion, Group Mutual Exclusion, Concurrency, Distributed Systems

Abstract

We propose a distributed solution for the group mutual exclusion problem based on priorities, in a network with no share memory whose members only communicate by messages. The proposed algorithm is composed by two players: groups and processes, groups are passive players while processes are active players. For the coordination access to the resource, each group has assigned a quorum. The groups have associated a base priority in each stage, meanwhile the processes have the same level priority. An important feature is that processes have associated a time to participate in the group in each stage. The message complexity obtain, in the best case, where the group does not yield the permission, is 3l + 3(q - 1) messages, where l denotes the processes linked and q denotes the quorum size. The maximum concurrency of the algorithm is n, which implies that all processes have linked to the same group.

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References

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Published

2011-04-01

How to Cite

Cenci, K. M., & Ardenghi, J. R. (2011). Group Mutual Exclusion Based on Priorities. Journal of Computer Science and Technology, 11(01), p. 21–26. Retrieved from https://journal.info.unlp.edu.ar/JCST/article/view/684

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Section

Original Articles