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Issue No. 03 - March (2009 vol. 20)
ISSN: 1045-9219
pp: 419-432
Lau Cheuk Lung , Universidade Federal de Santa Catarina, Florianópolis
Miguel Correia , Faculdade de Cieências da Universidade de Lisboa, Lisboa
Alysson Neves Bessani , Faculdade de Cieências da Universidade de Lisboa, Lisboa
Joni da Silva Fraga , Universidade Federal de Santa Catarina, Florianópolis
Despite the large amount of Byzantine fault-tolerant algorithms for message-passing systems designed through the years, only recently algorithms for the coordination of processes subject to Byzantine failures using shared memory have appeared. This paper presents a new computing model in which shared memory objects are protected by fine-grained access policies, and a new shared memory object, the Policy-Enforced Augmented Tuple Space (PEATS). We show the benefits of this model by providing simple and efficient consensus algorithms. These algorithms are much simpler and requires less shared memory operations, using also less memory bits than previous algorithms based on ACLs and sticky bits. We also prove that PEATS objects are universal, i.e., that they can be used to implement any other shared memory object, and present lock-free and wait-free universal constructions.
Distributed programming, Fault-tolerance, Access controls, Distributed systems, Parallelism and concurrency
Lau Cheuk Lung, Miguel Correia, Alysson Neves Bessani, Joni da Silva Fraga, "Sharing Memory between Byzantine Processes Using Policy-Enforced Tuple Spaces", IEEE Transactions on Parallel & Distributed Systems, vol. 20, no. , pp. 419-432, March 2009, doi:10.1109/TPDS.2008.96
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