Technique for enabling operation of a computer system with a consistent state of a linked list data structure after a main memory failure

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United States of America Patent

PATENT NO 4459658
SERIAL NO

06352556

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Abstract

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Operation of a computer system after a main memory failure is enabled by storing a read-only access shadow copy of its data structures in another memory having an independent failure mode. The shadow copy is periodically updated at a series of checkpoints. Where the data structure is a linked list, updating without recopying is enabled by prelinking the list item in the read-only list to the beginning of a second read/write list, which is appended to the first list at the next checkpoint.

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Patent Owner(s)

Patent OwnerAddress
NCR CORPORATION864 SPRING ST NW ATLANTA GA 30308

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gabbe, John D Little Silver, NJ 4 479
Hecht, Matthew S Red Bank, NJ 3 725

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