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:
Jan. 24, 2006
Filed:
Nov. 21, 2002
Trina R. Wisler, Tigard, OR (US);
Jim B. Tate, Glendale, AZ (US);
David C. Hege, San Jose, CA (US);
Charles Stuart Johnson, San Jose, CA (US);
David J. Wisler, Tigard, OR (US);
Trina R. Wisler, Tigard, OR (US);
Jim B. Tate, Glendale, AZ (US);
David C. Hege, San Jose, CA (US);
Charles Stuart Johnson, San Jose, CA (US);
David J. Wisler, Tigard, OR (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A modified transaction registration protocol is disclosed. The registration protocol is inherently centralized in that processes requesting registration to participate in the work of a transaction, must send a request to a Broadcast Owner CPU which is the CPU that initiated the transaction. The processes wait, suspended, until a response is received from the Broadcast Owner CPU. However, if the Broadcast Owner CPU fails to respond to the registration request, then the processes that are waiting are incapable performing work for the transaction. While a CPU failure may not occur often, in a fault-tolerant system, such events must be accounted for. Therefore, the transaction registration protocol is modified to revert to a Full Broadcast transaction protocol and complete any outstanding registration requests. This is accomplished by distributing transactions to all of the CPUs in the system, and in each CPU forcing the completion of registration requests in each CPU.