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RE: Re: [xml-dev] Exploiting multi-core CPUs during XML parsing
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I believe this approach could be very useful for implementing Google Romance efficiently.
>> On Mar 31, 2006, at 11:22 PM, Sean McGrath wrote:
>
> > I have sketched out an algorithm for fast XML WF parsing utilising
> > two threads that each start at opposite ends of the octet-stream
> > and meet in the middle. The algorithm hinges on the fact that
> > start- and end-tags are balanced. i.e. as one thread reads forward
> > looking for foo start-tag, the other thread is reading backwards
> > looking for foo end-tag.
> >
> > This also has the nice side effect of giving you accurate error
> > messages quickly. i.e. as soon as a mismatched tag is found, it can
> > be reported. This is particularly useful with recursive element types.
> >
> > Modern machines (even desktop boxes) will increasingly have multi-
> > core CPUs as standard and I think it behooves us to find ways of
> > exploiting that in the XML world.
> >
> > But to get the most out of the algorithm, you really need a
> > filesystem that supports reading byte-streams backwards.
> >
> > Does anyone know of such a filesystem?
> >
> > thanks,
> > Sean
> >
> >
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