Thursday, November 24, 2005

Definition 2 for Preemption

The act of suspending the execution of one thread
and starting (or resuming) another. The suspended
thread is said to have been "preempted" by the new
thread. In QNX, whenever a lower-priority thread is
actively consuming the CPU, and a higher-priority
thread becomes READY, the lower-priority thread is
immediately preempted by the higher-priority thread.

www.qnx.com/developer/docs/momentics_nc_docs
/neutrino/sys_arch/glossary.html

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