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Re: [Xen-devel] [Problem] about src/xen/include/public/io/ring.h

On Fri, Apr 12, 2013 at 9:45 PM, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:
On Fri, Apr 12, 2013 at 07:24:52PM +0800, éç wrote:
> >
> > This stuff is quite difficult to describe in words. Perhaps you would
> > find it helpful to draw the ring and the 4 pointers and to consider what
> > happens when each pointer catches up to (but doesn't pass) the one in
> > front, and what this tells you about the number of requests/responses
> > which are on the ring at that time.
> >
> >
> Could you show me a rough figure for describing unconsumed requests in a
> specific scene.

It would be easier if you just instrumented the code in question to see
how it works.

Could you show me a scene in which Âwhat value the four pointers are respectively equal to?
That's intuitional.
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