Hi,

I occasionally get the exception below using java version "1.6.0_21", 64-Bit 
Server VM and FOP 1.0 to transform FOP intermediate format to Postscript with 
more than one threads. Of course, each thread uses a new instance of 
org.apache.fop.render.intermediate.util.IFConcatenator. Any ideas why calling 
java.awt.color.ICC_Profile.getInstance() throws 
java.util.ConcurrentModificationException ?


Caused by: java.util.ConcurrentModificationException 
at java.util.AbstractList$Itr.checkForComodification(Unknown Source) 
at java.util.AbstractList$Itr.next(Unknown Source) 
at sun.awt.color.ProfileDeferralMgr.activateProfiles(Unknown Source) 
at java.awt.color.ICC_Profile.getInstance(Unknown Source) 
at 
org.apache.xmlgraphics.image.loader.impl.ImageLoaderRawJPEG.buildICCProfile(ImageLoaderRawJPEG.java:236)
 
at 
org.apache.xmlgraphics.image.loader.impl.ImageLoaderRawJPEG.loadImage(ImageLoaderRawJPEG.java:198)
 
at 
org.apache.xmlgraphics.image.loader.pipeline.ImageProviderPipeline.execute(ImageProviderPipeline.java:154)
 
at 
org.apache.xmlgraphics.image.loader.pipeline.ImageProviderPipeline.execute(ImageProviderPipeline.java:99)
 
at 
org.apache.xmlgraphics.image.loader.ImageManager.getImage(ImageManager.java:268)
 
at 
org.apache.fop.render.intermediate.AbstractIFPainter.drawImageUsingImageHandler(AbstractIFPainter.java:143)
 
at 
org.apache.fop.render.ps.PSPainter.drawImageUsingImageHandler(PSPainter.java:167)
 
at 
org.apache.fop.render.intermediate.AbstractIFPainter.drawImageUsingURI(AbstractIFPainter.java:270)
 
at org.apache.fop.render.ps.PSPainter.drawImage(PSPainter.java:185) 
at 
org.apache.fop.render.intermediate.IFParser$Handler$ImageHandler.endElement(IFParser.java:676)
 
at 
org.apache.fop.render.intermediate.IFParser$Handler.endElement(IFParser.java:352)
 
at 
org.apache.xalan.transformer.TransformerIdentityImpl.endElement(TransformerIdentityImpl.java:1102)
 
at org.xml.sax.helpers.XMLFilterImpl.endElement(Unknown Source) 
at 
com.idocs.export2.placeholder.PlaceholderFilter.endElement(PlaceholderFilter.java:61)
 
at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source) 
at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unknown 
Source) 
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown 
Source) 
at 
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown
 Source) 
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown 
Source) 
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) 
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) 
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) 
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) 
at org.xml.sax.helpers.XMLFilterImpl.parse(Unknown Source) 
at 
org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:485)
 
at org.apache.fop.render.intermediate.IFParser.parse(IFParser.java:104) 
at 
org.apache.fop.render.intermediate.util.IFConcatenator.appendDocument(IFConcatenator.java:102)



Thanks,
Alexis Giotis
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