An interface algebra for real-time components Conference Paper


Author(s): Henzinger, Thomas A; Matic, Slobodan
Title: An interface algebra for real-time components
Affiliation
Abstract: We present an assume-guarantee interface algebra for real-time components. In our formalism a component implements a set of task sequences that share a resource. A component interface consists of an arrival rate function and a latency for each task sequence, and a capacity function for the shared resource. The interface specifies that the component guarantees certain task latencies depending on assumptions about task arrival rates and allocated resource capacities. Our algebra defines compatibility and refinement relations on interfaces. Interface compatibility can be checked on partial designs, even when some component interfaces are yet unknown. In this case interface composition computes as new assumptions the weakest constraints on the unknown components that are necessary to satisfy the specified guarantees. Interface refinement is defined in a way that ensures that compatible interfaces can be refined and implemented independently. Our algebra thus formalizes an interface-based design methodology that supports both the incremental addition of new components and the independent stepwise refinement of existing components. We demonstrate the flexibility and efficiency of the framework through simulation experiments.
Conference Title: RTAS: Real-time and Embedded Technology and Applications Symposium
Conference Dates: April 4-7, 2006
Conference Location: San Jose, CA, USA
ISBN: 978-146738639-5
Publisher: IEEE  
Date Published: 2006-04-24
Start Page: 253
End Page: 266
DOI: 10.1109/RTAS.2006.11
Open access: no
IST Austria Authors
  1. Thomas A. Henzinger
    415 Henzinger
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