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Publications

PLEASE NOTE: The Publications System provided by the Manufacturing Systems Integration Division (MSID) has moved to: http://www.mel.nist.gov/msidlibrary/publications.html. The pages below are maintained for archival purposes only.

Publication summary

Author(s): Don Libes

Publication date: June 1985

Citation: Don Libes: "User-Level Shared Variables (In a Hierarchical Control Environment)," Proceedings of the 1985 USENIX Conference, June, 1985.

Availability:

  • Postscript
  • A paper copy of this document is available by contacting Kristy Thompson [web,email]
Abstract:
We have implemented a shared variable system for UNIX 4.2BSD that emulates a shared or common memory. This system is all user level code and requires no kernel modifications. It is accessible from a variety of languages. This shared memory system provides its service transparently to remote hosts across a local-area network. This system is being used in a real application--an automated factory. Shared variables are an appropriate communication paradigm in a real-time environment (in comparison to message passing or pipes).

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