Supporting the CANCEL Command Through Software Architecture

Abstract

A system that supports the user's ability to cancel a command should be designed to achieve particular results. These results include the responses the system should make to the user, such as providing feedback to the user about the command's receipt, predicting the time the cancellation should take (for long-running cancellations), and indicating the state to which the system was returned after the completion of the cancellation. To support a cancellation command, a system should be designed so that the command is handled on a thread separate from that of the command being cancelled, the resources being used by the command being cancelled should be freed, and any processes collaborating with the command being cancelled should be informed of the cancellation. This note details the responsibilities that a system must implement to support command cancellation.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2002
Accession Number
ADA408691

Entities

People

  • Bonnie E. John
  • Len Bass

Organizations

  • Carnegie Mellon University

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Accuracy
  • Auditory Signals
  • Cancellation
  • Cognitive Systems Engineering
  • Computers
  • Digital Communications
  • Engineering
  • Feedback
  • Governments
  • Graphical User Interface
  • Human Systems Integration
  • Human-Computer Interaction
  • Operating Systems
  • Psychology
  • Software Design
  • Software Development
  • User Interface

Fields of Study

  • Computer science

Readers

  • Aerospace logistics and air mobility.
  • Life Cycle Cost Analysis
  • Public Financial Management and Budgeting