APPARATUS AND METHOD FOR EXCLUSIVE CONTROL
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United States of America Patent
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Issued Date -
May 2, 2013
app pub date -
Oct 31, 2012
filing date -
Nov 1, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An apparatus performs a plurality of processes, and determines content of I/O processing requested by an I/O processing request that has been issued, by one of the plurality of processes, to access common resources including a plurality of devices shared by the plurality of processes. The apparatus causes the I/O processing request to acquire one of first and second access authorities depending on the determined content of the I/O processing, where the first access authority permits only one I/O processing request at a time to access the common resources, and the second access authority permits only one I/O processing request at a time to access one of the plurality of devices included in the common resource.
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