A model of cooperative threads

  • Authors:
  • Martin Abadi;Gordon Plotkin

  • Affiliations:
  • Microsoft Research, Silicon Valley, CA and University of California, Santa Cruz, Santa Cruz, CA, USA;University of Edinburgh, Edinburgh, United Kingdom and Microsoft Research, Silicon Valley, CA

  • Venue:
  • Proceedings of the 36th annual ACM SIGPLAN-SIGACT symposium on Principles of programming languages
  • Year:
  • 2009

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Abstract

We develop a model of concurrent imperative programming with threads. We focus on a small imperative language with cooperative threads which execute without interruption until they terminate or explicitly yield control. We define and study a trace-based denotational semantics for this language; this semantics is fully abstract but mathematically elementary. We also give an equational theory for the computational effects that underlie the language, including thread spawning. We then analyze threads in terms of the free algebra monad for this theory.