Download Formal Methods for Open Object-Based Distributed Systems: by Massimo Bartoletti, Pierpaolo Degano, Gian Luigi Ferrari PDF

By Massimo Bartoletti, Pierpaolo Degano, Gian Luigi Ferrari (auth.), Roberto Gorrieri, Heike Wehrheim (eds.)

This booklet constitutes the refereed lawsuits of the eighth IFIP WG 6.1 foreign convention on Formal tools for Open Object-Based disbursed structures, FMOODS 2006, held in Bologna, Italy in June 2006.

The sixteen revised complete papers awarded including an invited paper and abstracts of two invited talks have been rigorously reviewed and chosen from fifty one submissions. one of the issues addressed are part- and model-based layout, service-oriented computing, software program caliber, modeling languages implementation, formal specification, verification, validation, checking out, and service-oriented systems.

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Read Online or Download Formal Methods for Open Object-Based Distributed Systems: 8th IFIP WG 6.1 International Conference, FMOODS 2006, Bologna, Italy, June 14-16, 2006. Proceedings PDF

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Extra info for Formal Methods for Open Object-Based Distributed Systems: 8th IFIP WG 6.1 International Conference, FMOODS 2006, Bologna, Italy, June 14-16, 2006. Proceedings

Example text

Acq:=[] num:=0 client:=0 BEG / size := M gauge := M init ask IDLE [gauge > 0] end BEG init [gauge < size] release / gauge := gauge+1 [gauge > 0] acquire / gauge := gauge−1 [not i in acq] ask / num:=0 client:=i [num < QUOTA] acquire /num:= num+1 IDLE [i in acq] release / acq[i]:=acq[i]−1 ok ASK OK [num=QUOTA] new / acq[i]:=QUOTA Fig. 1. Resource allocator system (left: allocator, right: client system) As an illustration, let us take a resource allocator system with two components: the allocator and the client system.

In other words, the graph showed that the decision had the consistent relationship with one or more of them. 4 Applying Architectural Changes for Quality Achievement As an example, we tried to transform the current decision for synchronization among the tasks concurrently trying to access a shared resource according to the previous evaluation results. Namely, we considered applying a periodic execution mechanism using a scheduler [3] to the design area of D8(Task Synchronization). Prior to applying an alternative to a design area, however, it is necessary to analyze its impact on an architecture.

Since GIVEN does not divide QUOTA, the condition num>QUOTA will be eventually true and num=QUOTA will never be true. Note also that the condition gauge

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