| slovo | definícia |
busy-wait
(foldoc) | busy-wait
To wait for an event by spinning through a
tight loop or timed-delay loop that polls for the event on
each pass, as opposed to setting up an interrupt handler and
continuing execution on another part of the task. This is a
wasteful technique, best avoided on time-sharing systems
where a busy-waiting program may hog the processor.
[Jargon File]
(1999-06-10)
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busy-wait
(jargon) | busy-wait
vi.
Used of human behavior, conveys that the subject is busy waiting for
someone or something, intends to move instantly as soon as it shows up, and
thus cannot do anything else at the moment. “Can't talk now, I'm
busy-waiting till Bill gets off the phone.”
Technically, busy-wait means to wait on an event by spinning through a
tight or timed-delay loop that polls for the event on each pass, as opposed
to setting up an interrupt handler and continuing execution on another part
of the task. In applications this is a wasteful technique, and best avoided
on timesharing systems where a busy-waiting program may hog the
processor. However, it is often unavoidable in kernel programming. In the
Linux world, kernel busy-waits are usually referred to as spinlocks.
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