Patent · US Active

Dequeue operation using mask vector to manage input/output interruptions

US8762615B2 · kind B2 · utility

2Cited by

6References

20Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Janet R. Easton · Woodstock, US
Norbert Hagspiel · Wissen, DE
Bernd Nerz · Eppelheim, DE

Key dates

Filing date	Dec 21, 2011
Grant date	Jun 24, 2014
Priority date	—
Expiry date	Aug 22, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG06F13/24
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A command is issued to reset one or more pending interrupt indicators and arbitrate for ownership of the interrupt. Responsive to a processor receiving the command, a check is made of a selected pending interrupt indicator. If the selected pending interrupt indicator is not set, another pending interrupt indicator is checked, instead of providing a negative response and reissuing the command. In this way, one dequeue command can replace multiple dequeue commands and the overhead of leaving and re-entering the interrupt handler is reduced. A negative response is reserved for those situations in which there are no pending interrupt indicators to be reset.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.