Comparative semantics for linear arrays of communicating processes

A study of the UNIX fork and pipe commands
  • J. W. de Bakker
  • F. van Breugel
  • A. de Bruin
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 711)


Operational (O) and denotational (D) semantic models are designed for a language incorporating a version of the UNIX fork and pipe commands. Taking a simple while language as starting point, a number of programming constructs are added which achieve that a program can generate a dynamically evolving linear array of processes connected by channels. Over these channels sequences of values (‘streams’) are transmitted. Both O and D are defined as (unique) fixed point of a contractive higher order operator. This allows a smooth proof that O and D are equivalent. Additional features are the use of hiatons, and of the closely related syntactic resumptions and semantic continuations.


Operational Semantic Output Channel Input Channel Unique Fixed Point Input Stream 
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

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • J. W. de Bakker
    • 1
    • 2
  • F. van Breugel
    • 1
    • 2
  • A. de Bruin
    • 3
  1. 1.Department of Software TechnologyCWIAB Amsterdam
  2. 2.Department of Mathematics and Computer ScienceVrije UniversiteitMC Amsterdam
  3. 3.Faculty of EconomicsErasmus UniversiteitDR Rotterdam

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