CONCUR 2008 - Concurrency Theory: 19th International by Joseph Y. Halpern (auth.), Franck van Breugel, Marsha

By Joseph Y. Halpern (auth.), Franck van Breugel, Marsha Chechik (eds.)

This e-book constitutes the refereed complaints of the nineteenth foreign convention on Concurrency thought, CONCUR 2008, held in Toronto, Canada, August 19-22, 2008.

The 33 revised complete papers offered including 2 instrument papers have been conscientiously reviewed and chosen from one hundred twenty submissions. the subjects comprise version checking, approach calculi, minimization and equivalence checking, varieties, semantics, likelihood, bisimulation and simulation, genuine time, and formal languages.

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Additional resources for CONCUR 2008 - Concurrency Theory: 19th International Conference, CONCUR 2008, Toronto, Canada, August 19-22, 2008. Proceedings

Sample text

Ljn ∈ (B∗ )n for all j ≥ 0 and the following hold: (i) q0 = qinit and l0 = ε, . . , ε , and (ii) for all j ≥ 0, there exists a transition (qj , cj , (dj , tj ), rj , qj+1 ) ∈ δ such that if φ(qj , (dj , tj )) = true, then (dj , tj ) ∈ t cm((d0 , t0 ) . . (dj−1 , tj−1] ), and (iii) tj = σ(j), and (iv) cj = θtj (ljj ), and (v) for t t all t ∈ T , we have lj+1 = ljt if either t = tj or rj =⊥, and lj+1 = ljt · rj otherwise. A statement sj ∈ Sˆ is successful in the run ρ = q0 , l0 , s0 , r0 q1 , l1 , s1 , r1 .

However, z has to serialize after y due to a conflict on v1 (z reads v1 after v1 is written and committed by y). So, w is not strictly serializable. On the other hand, if one of the transactions had not committed, the word would have been strictly serializable. – Consider the word w = ((write, v1 ), t2 ), ((read, v2 ), t2 ), ((read, v3 ), t3 ), ((read, v1 ), t1 ), (commit, t2 ), ((write, v2 ), t3 ), ((write, v3 ), t1 ), (commit, t1 ), (commit, t3 ). The word is illustrated in Figure 1(b). The transaction x has to serialize before y due to a conflict on v1 .

4144, pp. 17–30. Springer, Heidelberg (2006) Semantics of Deterministic Shared-Memory Systems R´emi Morin Aix-Marseille universit´e — UMR 6166 — CNRS Laboratoire d’Informatique Fondamentale de Marseille 163, avenue de Luminy, F-13288 Marseille Cedex 9, France Abstract. We investigate a general model of concurrency for shared-memory systems. We introduce some intuitive interleaving semantics within the general framework of automata with concurrency relations and connect it to some partial order approach.

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