Object-oriented multitasking system

Patent 5519867 Issued on May 21, 1996. Estimated Expiration Date:

July 19, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventors

Application

No. 094673 filed on 07/19/1993

US Classes:

718/107, Multitasking, time sharing710/200, ACCESS LOCKING714/2, Fault recovery718/103, Priority scheduling719/328, APPLICATION PROGRAM INTERFACE (API)719/332Object oriented dynamic linking, late binding

Examiners

Primary: Oberley, Alvin E.
Assistant: Chavis, John Q.

Attorney, Agent or Firm

Stephens; Keith

International Class

G06F 009/40

Abstract

An apparatus for enabling an object-oriented application to access in an object-oriented manner a procedural operating system having a native procedural interface is disclosed. The apparatus includes a computer and a memory component in the computer. A code library is stored in the memory component. The code library includes computer program logic implementing an object-oriented class library. The object-oriented class library comprises related object-oriented classes for enabling the application to access in an object-oriented manner services provided by the operating system. The object-oriented classes include methods for accessing the operating system services using procedural function calls compatible with the native procedural interface of the operating system. The computer processes object-oriented statements contained in the application and defined by the class library by executing methods from the class library corresponding to the object-oriented statements. The object-oriented application includes support for multi-tasking.

Other References

Proc. of the Summer 1988 Usenix Conf. 20 Jun. 1988, San Francisco, US, pp. 1-13 "Using the X Toolkit or How to Write a Widget" by McCormack et al
New Directions for Unix. Proc. Autumn 1988 EUUG Conf. Oct. 3, 1988, Cascais, Portugal, pp. 25-37, Bernabeu-Auban et al. "Clouds--A Distributed Object-Based Operating System Architecture and Kernel Implementation