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Posted to dev@xmlbeans.apache.org by "Cezar Andrei (JIRA)" <xm...@xml.apache.org> on 2007/05/01 00:59:17 UTC
[jira] Updated: (XMLBEANS-328) Problems in multi-processor
environment
[ https://issues.apache.org/jira/browse/XMLBEANS-328?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Cezar Andrei updated XMLBEANS-328:
----------------------------------
Pasi, it seems that you are the first to find this problem. Please make sure you don't use XMLOptions.setUnsynchronized(), so that XmlBeans can take care of the synchronization. Assuming there is a bug, it is very had to find it without reproducing it and having only the two stack traces you're attached.
To help us finding the bug, we need to make sure what revision number are your sources at and that you don't have any changes, the full stack traces, plus the smallest XMLBeans user code that reproduces the problem.
> Problems in multi-processor environment
> ---------------------------------------
>
> Key: XMLBEANS-328
> URL: https://issues.apache.org/jira/browse/XMLBEANS-328
> Project: XMLBeans
> Issue Type: Bug
> Affects Versions: Version 2.2, Version 2.2.1
> Environment: At least Win XP and Linux 2.6 with Sun JRE. Intel multi-core processor.
> Reporter: Pasi Lehtimaki
> Priority: Critical
>
> Running a strongly threadded Eclipse application using xmlbeans in multi-processor (/multi-core) computer causes frequent crashes in xmlbeans code.
> Most of the crases happen in Cur.java in form of a NPE:
> ***************************************************
> java.lang.NullPointerException
> at org.apache.xmlbeans.impl.store.Cur.listRemove(Cur.java:2783)
> at org.apache.xmlbeans.impl.store.Locale.getCur(Locale.java:2775)
> at org.apache.xmlbeans.impl.store.Locale.tempCur(Locale.java:2736)
> at org.apache.xmlbeans.impl.store.Locale.tempCur(Locale.java:2731)
> at org.apache.xmlbeans.impl.store.Xobj.tempCur(Xobj.java:348)
> at org.apache.xmlbeans.impl.store.Xobj.new_cursor(Xobj.java:1810)
> at org.apache.xmlbeans.impl.values.XmlObjectBase.newCursor(XmlObjectBase.java:250)
> at org.apache.xmlbeans.impl.values.XmlObjectBase.selectPath(XmlObjectBase.java:424)
> at org.apache.xmlbeans.impl.values.XmlObjectBase.selectPath(XmlObjectBase.java:415)
> ***************************************************
> In some cases the crash happens in Locale.exit():
> ***************************************************
> Exception occurred: java.lang.ArrayIndexOutOfBoundsException: -1
> at org.apache.xmlbeans.impl.store.Locale.exit(Locale.java:2840)
> ***************************************************
> This problem problem occurs in xmlbeans 2.2. and in the latest version in SVN. The problem disappears when I turn the multi-core support off from BIOS and reappears again immediently when I turn it back on. So I believe that this has something to do with threading. Only classes Locale.java and Cur.java seem to be affected. I haven't encountered any exceptions from other classes.
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