Get Aliasing in Object-Oriented Programming. Types, Analysis and PDF

By Dave Clarke, James Noble, Tobias Wrigstad (auth.), Dave Clarke, James Noble, Tobias Wrigstad (eds.)

This e-book offers a survey of the cutting-edge on thoughts for facing aliasing in object-oriented programming. It marks the twentieth anniversary of the paper The Geneva conference at the remedy of item Aliasing by means of John Hogg, Doug Lea, Alan Wills, Dennis de Champeaux and Richard Holt. The 22 revised papers have been conscientiously reviewed to make sure the top quality.The contributions are prepared in topical sections at the Geneva conference, possession, concurrency, alias research, controlling results, verification, programming languages, and visions.

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Extra resources for Aliasing in Object-Oriented Programming. Types, Analysis and Verification

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We expect that these approaches merely scratch the surface of what is becoming an increasingly important problem area. Parameterised Race Free Java (PRFJ) [24] is an ownership-based type system for guaranteeing race-freedom in concurrent Java programs. The discipline PRFJ enforces is called owners-as-locks, and is in many ways similar to Flanagan and Abadi’s Types for Safe Locking [64], with ownership and parameterisation included for greater flexibility. Each object is associated with a lock, and the encapsulation provided by ownership allows protection of an entire aggregate by acquiring a single lock, namely that of the owner of the aggregate.

As a consequence, the links are writeable by sibling objects. Another approach that produces the effect of multiple object owners is Tribal Ownership [34]. This was proposed by Cameron, Noble and Wrigstad and relies on earlier work by Clarke et al. on the virtual class calculus Tribe [41]. In Tribal Ownership, ownership nesting is reflected in the nesting of virtual classes and each object has an out reference to its enclosing object, equal to being able to name one’s owner. Tribal Ownership allows different prescriptive ownership policies to be plugged into the system which gives rise to different levels of protection.

5 Ownership for Object Upgrades Boyapati et al. [23] describe a quite unexpected application of Ownership Types in the context of persistent object stores. Their approach uses Ownership Types to ensure, in a modular way, that a persistent object store can be efficiently updated without stopping the application. Modularity allows the programmer to locally reason about the correctness of their upgrades. Ownership Types with effects annotations help to provide the desired modularity condition. The system was implemented in the context of the Thor language [93].

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