The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 03, 2008
Filed:
Dec. 06, 2001
Cary Lee Bates, Rochester, MN (US);
Vadim Berestetsky, North York, CA;
Paul Reuben Day, Rochester, MN (US);
John Matthew Santosuosso, Rochester, MN (US);
Cary Lee Bates, Rochester, MN (US);
Vadim Berestetsky, North York, CA;
Paul Reuben Day, Rochester, MN (US);
John Matthew Santosuosso, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method to trace a variable or other expression through a computer program is disclosed. A user determines the variable and the conditions upon which activity of the variable will be monitored. As a result of the invention, every time that variable is referenced in a memory operation or other activity by the program and the conditions set forth by the user are satisfied, the state of that variable is saved as a snapshot without interrupting or stopping execution of the program. The snapshots are accumulated in a history table. The history table can be retrieved and the state of the variable in any given snapshot can be restored. Other variables and expressions can be attached to the trigger variable and the states of these other variables at the time of the activity of the trigger variable may also be saved in the snapshot. The method may be incorporated into a program as a tracing device or a program product separate from the logical processing device executing the program.