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List:       openjdk-serviceability-dev
Subject:    RFR: 8259008: ArithmeticException was thrown at "Monitor Cache Dump" on HSDB
From:       Yasumasa Suenaga <ysuenaga () openjdk ! java ! net>
Date:       2020-12-31 0:18:07
Message-ID: 0iZCD-O-3IYg8mATfnTUH1DH7oLF-mPFNWOuyKVqEnE=.62161c51-36d9-4bd0-8505-c027258d18df () github ! com
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I saw the exception as following when I chose "Monitor Cache Dump" menu on HSDB:

Exception in thread "AWT-EventQueue-0" java.lang.ExceptionInInitializerError
        at jdk.hotspot.agent/sun.jvm.hotspot.ui.MonitorCacheDumpPanel.dumpOn(MonitorCacheDumpPanel.java:92)
                
        at jdk.hotspot.agent/sun.jvm.hotspot.ui.MonitorCacheDumpPanel.<init>(MonitorCacheDumpPanel.java:59)
                
        at jdk.hotspot.agent/sun.jvm.hotspot.HSDB.showMonitorCacheDumpPanel(HSDB.java:1556)
                
        at jdk.hotspot.agent/sun.jvm.hotspot.HSDB$16.actionPerformed(HSDB.java:338)
        at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1972)
                
        at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2313)
                
        at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:405)
                
        at java.desktop/javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:262)
                
        at java.desktop/javax.swing.AbstractButton.doClick(AbstractButton.java:374)
        at java.desktop/javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1022)
                
        at java.desktop/javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1066)
                
        at java.desktop/java.awt.Component.processMouseEvent(Component.java:6617)
        at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3342)
                
        at java.desktop/java.awt.Component.processEvent(Component.java:6382)
        at java.desktop/java.awt.Container.processEvent(Container.java:2264)
        at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:4993)
        at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2322)
        at java.desktop/java.awt.Component.dispatchEvent(Component.java:4825)
        at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4934)
                
        at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4563)
                
        at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4504)
                
        at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2308)
        at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2773)
        at java.desktop/java.awt.Component.dispatchEvent(Component.java:4825)
        at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:772)
        at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
        at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715)
        at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
                
        at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
                
        at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95)
  at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:745)
        at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:743)
        at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
                
        at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
                
        at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:742)
        at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
                
        at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
                
        at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
                
        at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
                
        at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
                
        at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
Caused by: java.lang.ArithmeticException: / by zero
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.ObjectSynchronizer.initialize(ObjectSynchronizer.java:55)
                
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.ObjectSynchronizer$1.update(ObjectSynchronizer.java:40)
                
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.VM.registerVMInitializedObserver(VM.java:578)
                
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.ObjectSynchronizer.<clinit>(ObjectSynchronizer.java:38)
                
        ... 41 more

This exception seems to be caused by \
[JDK-8253064](https://bugs.openjdk.java.net/browse/JDK-8253064). It has changed \
`ObjectSynchronizer`, but it has not changed SA code.

-------------

Commit messages:
 - 8259008: ArithmeticException was thrown at "Monitor Cache Dump" on HSDB

Changes: https://git.openjdk.java.net/jdk/pull/1910/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1910&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8259008
  Stats: 182 lines in 5 files changed: 130 ins; 38 del; 14 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1910.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1910/head:pull/1910

PR: https://git.openjdk.java.net/jdk/pull/1910


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