reuse of SAXSVDDocumentFactory

[Joel Uckelman <uc...@nomic.net>]

I'm loading a large number of small SVG images across several threads.
Right now, my class which does this, SVGRenderer, has a static 
SAXSVGDocumentFactory which is used by all instances. Becasue
SAXSVGDocumentFactory has some internal state, I synchronize on my
static instance so that only one thread uses it at a time:

 synchronized (docFactory) {
  doc = docFactory.createDocument(file, in);
 }

My question is whether there's any benefit to having a single static
SAXSVGDocumentFactory instead of giving each one of my SVGRenderers 
its own. I'm not aware of what SAXSVGDocumentFactory is doing, so I
don't have a clear picture of what the costs would be of creating
several thousand of them as opposed to synchronizing on one.

-- 
J.

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