Formal Systems Specification: The RPC-Memory Specification - download pdf or read online

By Manfred Broy, Stephan Merz, Katharina Spies

ISBN-10: 3540495738

ISBN-13: 9783540495734

ISBN-10: 3540619844

ISBN-13: 9783540619840

The RPC-memory specification challenge used to be proposed by way of Broy and Lamport as a case examine within the formal layout of dispensed and concurrent platforms. As a practical instance usual for working structures and layout, the RPC-memory challenge was once used because the foundation for evaluating a variety of methods to formal specification, refinement, and verification.
Preliminary recommendations have been mentioned in the course of a workshop at Schloss Dagstuhl, Germany, in September 1994. Then an intensive dialogue happened among the referees and authors. eventually 15 completely revised papers have been authorized for inclusion during this quantity in complete element including the matter assertion and a synopsis.

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Extra resources for Formal Systems Specification: The RPC-Memory Specification Case Study

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The formalism is largely based on graphical notation and employs operational concepts that are rather intuitive. Decomposition into concurrent subsystems is very natural with Petri nets, it also gives rise to an independence relation that aids in proving an implementation correct. Annotations at places and transitions are used to formulate constraints that cannot be conveniently expressed as a Petri net. The paper indicates the verification conditions necessary to prove the implementation relation.

Able representing the interface. A VARIABLEparameter can have a different value in different states of a behavior. TLA is an untyped logic, so there are no type constraints on the values a variable can have. A CONSTANT parameter is one that has the same value in every state of a behavior. The constant parameter PrIds is the set of all process identifiers; for each p in PrIds, process p of the caller component issues calls to the corresponding process p of the returner component. The parameter Args is the set o f all "syntactically correct" procedure arguments.

We present a complete solution to this problem using TLA, the temporal logic of actions [12]. We assume the reader is familiar with Broy and Lamport's problem statement. Since the problem is so much simpler than the ones encountered in real applications, any approach that claims to be both practical and formal should allow a completely formal solution. Our specifications are written in TLA +, a formal language based on TLA. Our proofs are completely formal, except that some names are abbreviated for readability.

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Formal Systems Specification: The RPC-Memory Specification Case Study by Manfred Broy, Stephan Merz, Katharina Spies

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