Boots – shoes – and leggings
Patent
1990-03-14
1993-07-06
Harrell, Robert B.
Boots, shoes, and leggings
395650, 364DIG1, 364228, 3642281, 364243, 3642434, 3642543, 3642468, G06F 1516
Patent
active
052261433
ABSTRACT:
A conditional broadcast or notification facility of a global lock manager is utilized to both serialize access to pages stored in local caches of counterpart processors in a distributed system and to ensure consistency among pages common to the caches. Exclusive use locks are obtained in advance of all write operations. When a page is to be updated, which page is cached in a processor other than that of the requester, then a delay is posed to the grant of the exclusive lock, all shared use lock holders to the same page notified, local copies are invalidated, exclusive lock granted, page is updated and written through cache, after which the lock is demoted to shared use.
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Baird Robert
Bozman Gerald P.
Lett Alexander S.
Myers James J.
Tetzlaff William H.
Brodie R. Bruce
Geckil Mehmet
Harrell Robert B.
International Business Machines - Corporation
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