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US 2004/0177178 A1Published application
Efficient reading of a remote first in first out buffer
AssigneeInternational Business Machines Corporation
InventorsThomas A. Gregg, Stephen R. Burrow, Kulwant M. Pandey, Patrick J. Sugrue
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Abstract
A method and system for a processor to efficiently accesses a remote First-in First-out (FIFO) buffer that is used to record event information. The access involves an interrupt mechanism when the FIFO transitions from the empty state, a mechanism for reading a FIFO entry including FIFO state information, and a mechanism for reading large areas of the FIFO while maintaining the pointers and interrupt protocols.
Claims5
A method for a computer system having a communication link processor and employing a FIFO buffer, comprising the steps of:
- controling an asynchronous event storing and recording mechanism by discreet events into the FIFO at a location determined by a write pointer;
- and
- causing an attached processor to read the recording mechanism's FIFO at a location determined by a read pointer;
- said recording mechanism conditionally returning event and status information;
- and
- conditionally incrementing the FIFO read pointer.
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Dependencies are inferred from the claim text.