sync issue for MaxQueueSize

[kostaskougios]

MaxQueueSize is populated in one thread and then used in an other without sync. This randomly (if a code runs for hundreds of times) results in the Parser thread to read MaxQueueSize as 0. In turn this fails with an exception:

Exception in thread "XMLEventReader" java.lang.IllegalArgumentException
at java.util.concurrent.LinkedBlockingQueue.(LinkedBlockingQueue.java:261)
at scala.xml.pull.ProducerConsumerIterator$class.scala$xml$pull$ProducerConsumerIterator$$queue(XMLEventReader.scala:133)
at scala.xml.pull.XMLEventReader.scala$xml$pull$ProducerConsumerIterator$$queue$lzycompute(XMLEventReader.scala:27)
at scala.xml.pull.XMLEventReader.scala$xml$pull$ProducerConsumerIterator$$queue(XMLEventReader.scala:27)
at scala.xml.pull.ProducerConsumerIterator$$anonfun$produce$1.apply$mcV$sp(XMLEventReader.scala:144)
at scala.xml.pull.ProducerConsumerIterator$$anonfun$produce$1.apply(XMLEventReader.scala:144)
at scala.xml.pull.ProducerConsumerIterator$$anonfun$produce$1.apply(XMLEventReader.scala:144)
at scala.xml.pull.ProducerConsumerIterator$class.interruptibly(XMLEventReader.scala:125)
at scala.xml.pull.XMLEventReader.interruptibly(XMLEventReader.scala:27)
at scala.xml.pull.ProducerConsumerIterator$class.produce(XMLEventReader.scala:144)
at scala.xml.pull.XMLEventReader.produce(XMLEventReader.scala:27)
at scala.xml.pull.XMLEventReader$Parser$$anonfun$setEvent$1.apply(XMLEventReader.scala:68)
at scala.xml.pull.XMLEventReader$Parser$$anonfun$setEvent$1.apply(XMLEventReader.scala:68)
at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
at scala.collection.mutable.WrappedArray.foreach(WrappedArray.scala:35)
at scala.xml.pull.XMLEventReader$Parser.setEvent(XMLEventReader.scala:68)
at scala.xml.pull.XMLEventReader$Parser.run(XMLEventReader.scala:95)
at java.lang.Thread.run(Thread.java:745)

[kostaskougios]

Might be related because I am overriding the value like:

val xer = new XMLEventReader(fixedSource) {
// tmp workaround till https://groups.google.com/forum/#!topic/scala-user/OO9t2pUAeZY is resolved
override val MaxQueueSize = Integer.MAX_VALUE
}

That is due to the stop() bug I opened earlier on today.

[SethTisue]

XMLEventReader will be deprecated entirely in the next release (#193, #199)