Dynamic adding system for memory files shared among hosts, dynamic adding method for memory files shared among hosts, and computer-readable medium recording dynamic adding program for memory files shared among hosts
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United States of America Patent
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Jan 11, 2000
Grant Date -
N/A
app pub date -
Dec 18, 1997
filing date -
Dec 26, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
In response to an extension request to a shared memory file 104, shared file adding means 111 allocates an (additional) memory file 110; inter-host locking means 103 locks a hash table 106; hash table updating means 108 checks the number of data blocks in the (additional) shared memory file, and updates the hash table 106 to alter one of the data block addresses, out of those stored in entries in the hash table 106, pointing to the same data block in the shared buffer 104 so as to point to a data block in the (additional) shared memory file 110; and the added shared memory file 110 is thereby made available for shared use.
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