On 29 Mar 2011, at 17:29, Eric Douglas wrote: Hi Eric
> I think this is what they mean by thread safe. I seem to have a concurrency > issue. If I call a transform using the Fop handler with a PNGRenderer from 2 > JVM sessions at or near the same time one crashes. > > I haven't been able to reproduce the problem so far with the PDFRenderer so > either it doesn't have the issue or my timing is off on attempting to use it > in 2 sessions at once. The answer is that the PDFRenderer is entirely under our control --and thus we are virtually certain it works well with concurrent runs--, while the PNGRenderer (and also other formats, like TIFF) relies heavily on Java2D and AWT. Those latter libraries are not thread-safe themselves, and not always used in a thread-safe manner in XMLGraphics and FOP... Do you have a stack trace to go with the crash? If yes, do the processes consistently fail on the same method call? If so, there is a chance that we might be able to offer a fix in the short term. Regards, Andreas --- --------------------------------------------------------------------- To unsubscribe, e-mail: fop-users-unsubscr...@xmlgraphics.apache.org For additional commands, e-mail: fop-users-h...@xmlgraphics.apache.org
