Efficient ticket lock synchronization implementation using early wakeup in the presence of oversubscription
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United States of America Patent
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Apr 30, 2013
Grant Date -
Dec 27, 2007
app pub date -
Jun 22, 2006
filing date -
Jun 22, 2006
priority date (Note) -
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Abstract
A turn-oriented thread and/or process synchronization facility obtains a ticket value from a monotonically increasing ticket counter and waits until a memory location contains a value equal to the ticket value, yielding the processor between polls of the memory location only if a difference between the ticket value and the contents of the memory location exceeds a threshold value. Machine-readable media containing instructions to implement similar methods, and systems that can use the methods, are also described and claimed.
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