FMOODS 2013, FORTE 2013: Formal Techniques for Distributed Systems pp 225-241 | Cite as

Asynchronously Communicating Visibly Pushdown Systems

  • Domagoj Babić
  • Zvonimir Rakamarić
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7892)

Abstract

We introduce an automata-based formal model suitable for specifying, modeling, analyzing, and verifying asynchronous task-based and message-passing programs. Our model consists of visibly pushdown automata communicating over unbounded reliable point-to-point first-in-first-out queues. Such a combination unifies two branches of research, one focused on task-based models, and the other on models of message-passing programs. Our model generalizes previously proposed models that have decidable reachability in several ways. Unlike task-based models of asynchronous programs, our model allows sending and receiving of messages even when stacks are not empty, without imposing restrictions on the number of context-switches or communication topology. Our model also generalizes the well-known communicating finite-state machines with recognizable channel property allowing (1) individual components to be visibly pushdown automata, which are more suitable for modeling (possibly recursive) programs, (2) the set of words (i.e., languages) of messages on queues to form a visibly pushdown language, which permits modeling of remote procedure calls and simple forms of counting, and (3) the relations formed by tuples of such languages to be synchronized, which permits modeling of complex interactions among processes. In spite of these generalizations, we prove that the composite configuration and control-state reachability are still decidable for our model.

Keywords

Model Check Tree Automaton Reachability Problem Communication Topology FIFO Queue 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© IFIP International Federation for Information Processing 2013

Authors and Affiliations

  • Domagoj Babić
    • 1
  • Zvonimir Rakamarić
    • 2
  1. 1.Facebook, Inc.USA
  2. 2.University of UtahUSA

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