Electrical computers and digital data processing systems: input/ – Interrupt processing – Multimode interrupt processing
Reexamination Certificate
1999-09-22
2008-08-19
LaForgia, Christian (Department: 2139)
Electrical computers and digital data processing systems: input/
Interrupt processing
Multimode interrupt processing
C710S220000
Reexamination Certificate
active
07415559
ABSTRACT:
Described is a method for processing work items in a data processing system. An interrupt is generated in response to receipt of a work item on a queue and the generated interrupt is serviced to schedule a task by placing the task on a task queue for later processing of the queued work item. The interrupt is not enabled at this point and therefore the receipt of further work items will not result in the generation of interrupts. When the scheduled task reaches the head of the queue, the task is executed to process the queued work item (and all other work items that have been added to the queue since the task was scheduled). When all the work items have been processed, a further task is speculatively scheduled for processing of any work items that are subsequently placed on the work item queue. When the speculatively scheduled task reaches the head of the queue, it is executed to process queued work items; if any work items were found, a further task is speculatively scheduled, otherwise the interrupt is enabled.
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Butterworth Henry Esmond
Fuente Carlos Francisco
Maddock Robert Frank
Dougherty Anne V.
International Business Machines - Corporation
LaForgia Christian
Ryan & Mason & Lewis, LLP
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