Extending Pearl for Industrial Real-Time Applications

  • Authors:
  • Alexander D. Stoyenko;Wolfgang A. Halang

  • Affiliations:
  • -;-

  • Venue:
  • IEEE Software
  • Year:
  • 1993

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Abstract

High-Integrity Pearl, (HI-Pearl) an extension to the Process and Experiment Automation Real-Time language (Pearl) which incorporates several principles from the real-time Euclid language, is described. The requirements of real-time software and components of a real-time language are reviewed. HI-Pearl's mechanisms for concurrency control, synchronization, allocation, time-bounded loops, surveillance of events, parallelism, timing constraints, overload detection and handling, storage management, run tracing, and error detection and handling are discussed. HI-Pearl's schedulability analyzer, an automated tool to predict whether real-time software will adhere to its critical timing constraints, is also discussed.