Fast path for grace-period detection for read-copy update system
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United States of America Patent
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Apr 22, 2014
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app pub date -
Sep 13, 2007
filing date -
Sep 13, 2007
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Abstract
A technique for implementing fast path grace period detection for deferring the destruction of a shared data element until pre-existing references to the data element are removed. A check is made, without using locks to exclude other updaters, for the presence of readers that are accessing the shared data elements. Grace period detection is terminated to initiate deferred destruction of the data element if there are no readers accessing the shared data element. If there are readers accessing the shared data element, a lock is implemented and another check is made for the presence of the readers.
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