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US Patent 5093914 - Method of controlling the execution of object-oriented programs

US Patent Issued on March 3, 1992
Estimated Patent Expiration Date: Icon_subject December 15, 2009Estimated 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.
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Abstract

A method used by a digital computer in controlling execution of an object-oriented program to effect a defined action, e.g., stopping the program, when a specified virtual function is invoked on a specified object during execution of the program. A breakpoint address is determined at run time, advantageously after the specified object is created in accordance with execution of the program. The breakpoint address determination is not based solely on symbol table, pre-execution, information, but in addition on information generated in conjunction with the creation of the specified object. The breakpoint is inserted while program execution is stopped at an intermediate program point after the specified object is created. After program execution is resumed and the specified virtual function is invoked in accordance with the program, the breakpoint fires. However, the defined action is performed only in response to determining that the firing occurred on the specified object.

Other References

  • T. A. Cargill, "Pi: A Case Study in Object-Oriented Programming", OOPSLA '86 Proceedings, Sep. 1986, pp. 350-360
  • G. A. Pascoe, "Elements of Object-Oriented Programming", Byte, Aug. 1986
  • G. Booch, "Object-Oriented Development", IEEE Transactions on Software Engineering, vol. SE-12, No. 1, Feb. 1986, pp 211-221
  • J. R. Pugh, "Actors Set the Stage for Software Advances", Computer Design, Sep. 1984, pp. 185-186 and 188-189
  • B. Stroustrup, "An Overview of C++", SIGPLAN Notices, V21, #10, Oct. 1986, pp. 7-18
  • Tooke, Simon, "Object-Oriented Debugging: Strategies and Tools for Debugging Your Oop Apps.", Dr. Dobbs Journal, Nov. 1990, p. 36
  • Sun C++ Programmer's Guide--Sun Microsystems
  • S. B. Lippman et al., "Pointers to Class Members in C++", Proceedings of the USENIX C++ Conference, Denver, Colo., Oct. 17-21, 1988, pp. 305-32

Inventors

Assignee

Application

No. 451390 filed on 12/15/1989

US Classes:

717/129Using breakpoint

Examiners

Primary: Fleming, Michael R.
Assistant: Auve, Glenn A.

Attorney, Agent or Firm

US Patent References

4080650, Facilitating return from an on-line debugging program to a target program breakpoint
Issued on: 03/21/1978
Inventor: Beckett4791550, Higher order language-directed computer
Issued on: 12/13/1988
Inventor: Stevenson ,   et al.4885717System for graphically representing operation of object-oriented programs
Issued on: 12/05/1989
Inventor: Beck, et al.

International Class

G06F 011/00

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