METHOD, SYSTEM AND COMPUTER PROGRAM FOR LOW-POWER DETECTION OF GRACE PERIOD FOLLOWING SHARED DATA ELEMENT UPDATE OPERATION THAT AFFECTS NON-PREEMPTIBLE DATA READER

摘要

PPROBLEM TO BE SOLVED: To provide a technique for low-power detection of a grace period following a shared data element update operation that affects non-preemptible data readers. PSOLUTION: A grace period processing action is implemented that requires a processor that may be running a non-preemptible reader of the shared data element to pass through a quiescent state before further grace period processing can proceed. A power status of the processor is also determined. Further, grace period processing may proceed without requiring the processor to pass through a quiescent state if the power status indicates that quiescent state processing by the processor is unnecessary. PCOPYRIGHT: (C)2010,JPO&INPIT