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Re: Java based XML parsers for server use.

  • From: David Megginson <david@m...>
  • To: xml-dev@i...
  • Date: Mon, 10 May 1999 13:18:06 -0400 (EDT)

java xml parser multiprocessor
roddey@u... writes:

 > See my other response on the related thread. We have chosen what we
 > consider the correct level of granularity for thread safety, which
 > is at the per-parser level. I'm discussing the 2.x versions here,
 > Java and C++ are the same in this respect. We see little use in
 > having multiple threads in a single parser. It is more appropriate
 > to have a parser per-thread.

The point here, I suspect, is not that it is not a good idea to have
multiple threads inside the same parser, but that it is not a good
idea to use the same parser in multiple threads outside of it.

I can imagine a parser some day running several internal threads on a
multiprocessor machine -- one, perhaps, for I/O, one for tokenisation,
one for structure recognition, and one for schema-based validation.  I
don't know if I'd bother doing this right now, since single-threaded
parsers are so fast anyway, but who knows what tomorrows technology
and business requirements will be?

All the best,


David Megginson                 david@m...

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