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  1. XMLBeans
  2. XMLBEANS-328

Problems in multi-processor environment

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    Details

    • Type: Bug
    • Status: Open
    • Priority: Critical
    • Resolution: Unresolved
    • Affects Version/s: Version 2.2, Version 2.2.1
    • Fix Version/s: None
    • Component/s: None
    • Labels:
      None
    • Environment:
      At least Win XP and Linux 2.6 with Sun JRE. Intel multi-core processor.

      Description

      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.

        Attachments

        1. patch-xmlbeans-2.2.0
          0.8 kB
          Matthieu Baechler
        2. xbean.jar
          2.57 MB
          Radu Preotiuc
        3. patch-XMLBEANS328-2.4.0.patch
          3 kB
          Radu Preotiuc

          Activity

            People

            • Assignee:
              radup Radu Preotiuc
              Reporter:
              pjlehtim Pasi Lehtimaki
            • Votes:
              8 Vote for this issue
              Watchers:
              9 Start watching this issue

              Dates

              • Created:
                Updated: