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:
Oct. 07, 2008
Filed:
Jan. 25, 2005
David L. Bernick, Ben Lomond, CA (US);
William F. Bruckert, Los Gatos, CA (US);
David J. Garcia, Los Gatos, CA (US);
Robert L. Jardine, Cupertino, CA (US);
Pankaj Mehra, San Jose, CA (US);
James R. Smullen, Carmel, CA (US);
David L. Bernick, Ben Lomond, CA (US);
William F. Bruckert, Los Gatos, CA (US);
David J. Garcia, Los Gatos, CA (US);
Robert L. Jardine, Cupertino, CA (US);
Pankaj Mehra, San Jose, CA (US);
James R. Smullen, Carmel, CA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
Method and system of determining whether a user program has made a system level call and thus whether the user program is uncooperative with fault tolerant operation. Some exemplary embodiments may be a processor-based method comprising providing information from a first processor to a second processor (the information indicating that a user program executed on the first processor has not made a system level call in a predetermined amount of time), and determining by the first processor, using information from the second processor, whether a duplicate copy of the user program substantially simultaneously executed in the second processor has made a system level call in the predetermined amount of time.