Asynchronous communication in Ada

  • Authors:
  • Kenneth Elsom

  • Affiliations:
  • CSA Ltd, AXC Division, MoD PE, ARE, Portsmouth, PO6 4AA, UK

  • Venue:
  • IRTAW '89 Proceedings of the third international workshop on Real-time Ada issues
  • Year:
  • 1989

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Abstract

The current definition of Ada manifestly fails to satisfy the requirements for supporting the application domain characteristics of real-time, embedded and distributed systems particularly with respect to the capability for asynchronous message passing. It is shown that, for a number of independent reasons, the potential for allowing Ada tasks to communicate in this manner by extension of the existing purely synchronous rendezvous has significant benefits. Though this is a radical deviation from the existing language definition a firm proposal is made for allowing asynchronous inter-task communication. Some of the resultant semantic and syntactic implications are explored.