Multi-threaded processing using path locks
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United States of America Patent
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Aug 30, 2011
Grant Date -
Mar 27, 2008
app pub date -
Sep 27, 2006
filing date -
Sep 27, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
In one embodiment, a method includes receiving at a thread scheduler data that indicates a first thread is to execute next a particular instruction path in software to access a particular portion of a shared computational resource. The thread scheduler determines whether a different second thread is exclusively eligible to execute the particular instruction path on any processor of a set of one or more processors to access the particular portion of the shared computational resource. If so, then the thread scheduler prevents the first thread from executing any instruction from the particular instruction path on any processor of the set of one or more processors. This enables several threads of the same software to share a resource without obtaining locks on the resource or holding a lock on a resource while a thread is not running.
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