ACTOR SYSTEMS FOR REAL-TIME COMPUTATION

  • Authors:
  • H. G. Baker

  • Affiliations:
  • -

  • Venue:
  • ACTOR SYSTEMS FOR REAL-TIME COMPUTATION
  • Year:
  • 1978

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Abstract

Actor theory was invented by Hewitt and collaborators as a synthesis of many of the ideas from the high-level languages LISP, GEDANKEN, SMALLTALK, SIMULA-67, and others. Actor theory consists of a group of active objects called Actors, which communicate by passing messages to one another. This thesis explores several problems associated with implementing Actor theory as a basis for computer systems design. First, we give a firmer foundation to the theory by setting forth axioms which must be satisfied by any physically realizable message passing system. We then give an operational semantics for this theory by exhibiting an interpreter which is mapping this conceptual system onto current hardware in such a way that simple primitive operations all take a (small) bounded amount of time. In particular, the issues of storage and processor management are investigated and a real-time incremental garbage collection system for both is exhibited and analyzed. {AD A053-328}