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List: xmlbeans-dev
Subject: [jira] Updated: (XMLBEANS-328) Problems in multi-processor
From: "Cezar Andrei (JIRA)" <xmlbeans-dev () xml ! apache ! org>
Date: 2007-04-30 22:59:17
Message-ID: 23263924.1177973957514.JavaMail.jira () brutus
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[ 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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