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GlossaryofTerms
Scheduling—TheprocessofdecidingwhatthreadshouldexecutenextonaparticularCPU.Itisusually
alsotakenasinvolvingthecontextswitchtothatthread.
SchedulingLatency—Themaximumtimethata"ready"threadcanbedelayedbyalowerpriority
thread.
ScratchMemory—Memorythatcanbeoverwrittenwithoutloss;i.e.,priorcontentsneednotbesaved
andrestoredaftereachuse.
ScratchRegister—Aregisterthatcanbeoverwrittenwithoutloss;i.e.,priorcontentsneednotbesaved
andrestoredaftereachuse.
Thread—Theprogramstatemanagedbytheoperatingsystemthatdefinesalogicallyindependent
sequenceofprograminstructions.ThisstatemaybeaslittleastheProgramCounter(PC)value
butoftenincludesalargeportionoftheCPU'sregisterset.
SPRU352G–June2005–RevisedFebruary2007Glossary87
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