Imported GNU Classpath 0.92
2006-08-14 Mark Wielaard <mark@klomp.org> Imported GNU Classpath 0.92 * HACKING: Add more importing hints. Update automake version requirement. * configure.ac (gconf-peer): New enable AC argument. Add --disable-gconf-peer and --enable-default-preferences-peer to classpath configure when gconf is disabled. * scripts/makemake.tcl: Set gnu/java/util/prefs/gconf and gnu/java/awt/dnd/peer/gtk to bc. Classify gnu/java/security/Configuration.java as generated source file. * gnu/java/lang/management/VMGarbageCollectorMXBeanImpl.java, gnu/java/lang/management/VMMemoryPoolMXBeanImpl.java, gnu/java/lang/management/VMClassLoadingMXBeanImpl.java, gnu/java/lang/management/VMRuntimeMXBeanImpl.java, gnu/java/lang/management/VMMemoryManagerMXBeanImpl.java, gnu/java/lang/management/VMThreadMXBeanImpl.java, gnu/java/lang/management/VMMemoryMXBeanImpl.java, gnu/java/lang/management/VMCompilationMXBeanImpl.java: New VM stub classes. * java/lang/management/VMManagementFactory.java: Likewise. * java/net/VMURLConnection.java: Likewise. * gnu/java/nio/VMChannel.java: Likewise. * java/lang/Thread.java (getState): Add stub implementation. * java/lang/Class.java (isEnum): Likewise. * java/lang/Class.h (isEnum): Likewise. * gnu/awt/xlib/XToolkit.java (getClasspathTextLayoutPeer): Removed. * javax/naming/spi/NamingManager.java: New override for StackWalker functionality. * configure, sources.am, Makefile.in, gcj/Makefile.in, include/Makefile.in, testsuite/Makefile.in: Regenerated. From-SVN: r116139
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322
libjava/classpath/gnu/java/lang/management/MemoryMXBeanImpl.java
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libjava/classpath/gnu/java/lang/management/MemoryMXBeanImpl.java
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/* MemoryMXBeanImpl.java - Implementation of a memory bean
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Copyright (C) 2006 Free Software Foundation
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.java.lang.management;
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import java.lang.management.MemoryMXBean;
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import java.lang.management.MemoryNotificationInfo;
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import java.lang.management.MemoryUsage;
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import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.List;
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import javax.management.ListenerNotFoundException;
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import javax.management.MBeanNotificationInfo;
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import javax.management.NotCompliantMBeanException;
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import javax.management.Notification;
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import javax.management.NotificationEmitter;
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import javax.management.NotificationFilter;
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import javax.management.NotificationListener;
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import javax.management.openmbean.CompositeData;
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import javax.management.openmbean.CompositeDataSupport;
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import javax.management.openmbean.CompositeType;
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import javax.management.openmbean.OpenDataException;
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import javax.management.openmbean.OpenType;
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import javax.management.openmbean.SimpleType;
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/**
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* Provides access to information about the memory
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* management of the current invocation of the virtual
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* machine. Instances of this bean are obtained by calling
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* {@link ManagementFactory#getMemoryMXBean()}.
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*
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* @author Andrew John Hughes (gnu_andrew@member.fsf.org)
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* @since 1.5
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*/
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public final class MemoryMXBeanImpl
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extends BeanImpl
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implements MemoryMXBean, NotificationEmitter
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{
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private List listeners;
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private long notificationCount;
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public static CompositeType notifType;
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public static CompositeType usageType;
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static
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{
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try
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{
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CompositeType usageType =
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new CompositeType(MemoryUsage.class.getName(),
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"Describes the usage levels of a pool",
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new String[] { "init", "used",
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"committed", "max"
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},
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new String[] { "Initial level",
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"Used level",
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"Committed level",
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"Maximum level"
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},
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new OpenType[] {
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SimpleType.LONG, SimpleType.LONG,
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SimpleType.LONG, SimpleType.LONG
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});
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CompositeType notifType =
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new CompositeType(MemoryNotificationInfo.class.getName(),
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"Provides the notification info on memory usage",
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new String[] { "poolName", "usage", "count" },
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new String[] { "Name of the memory pool",
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"Usage level of the memory pool",
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"Number of times the threshold " +
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"has been crossed"
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},
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new OpenType[] {
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SimpleType.STRING, usageType, SimpleType.LONG
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});
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}
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catch (OpenDataException e)
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{
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throw new IllegalStateException("Something went wrong in creating " +
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"the composite data types.", e);
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}
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}
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/**
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* Constructs a new <code>MemoryMXBeanImpl</code>.
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*
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* @throws NotCompliantMBeanException if this class doesn't implement
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* the interface or a method appears
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* in the interface that doesn't comply
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* with the naming conventions.
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*/
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public MemoryMXBeanImpl()
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throws NotCompliantMBeanException
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{
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super(MemoryMXBean.class);
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listeners = new ArrayList();
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notificationCount = 0;
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}
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public void gc()
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{
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System.gc();
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}
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public MemoryUsage getHeapMemoryUsage()
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{
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return VMMemoryMXBeanImpl.getHeapMemoryUsage();
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}
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public MemoryUsage getNonHeapMemoryUsage()
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{
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return VMMemoryMXBeanImpl.getNonHeapMemoryUsage();
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}
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public int getObjectPendingFinalizationCount()
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{
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return VMMemoryMXBeanImpl.getObjectPendingFinalizationCount();
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}
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public boolean isVerbose()
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{
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return VMMemoryMXBeanImpl.isVerbose();
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}
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public void setVerbose(boolean verbose)
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{
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checkControlPermissions();
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VMMemoryMXBeanImpl.setVerbose(verbose);
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}
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private class ListenerData
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{
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private NotificationListener listener;
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private NotificationFilter filter;
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private Object passback;
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public ListenerData(NotificationListener listener,
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NotificationFilter filter, Object passback)
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{
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this.listener = listener;
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this.filter = filter;
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this.passback = passback;
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}
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public NotificationListener getListener()
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{
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return listener;
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}
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public NotificationFilter getFilter()
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{
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return filter;
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}
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public Object getPassback()
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{
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return passback;
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}
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public boolean equals(Object obj)
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{
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if (obj instanceof ListenerData)
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{
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ListenerData data = (ListenerData) obj;
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return (data.getListener() == listener &&
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data.getFilter() == filter &&
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data.getPassback() == passback);
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}
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return false;
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}
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}
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public void addNotificationListener(NotificationListener listener,
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NotificationFilter filter,
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Object passback)
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{
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if (listener == null)
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throw new IllegalArgumentException("Null listener added to bean.");
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listeners.add(new ListenerData(listener, filter, passback));
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}
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public MBeanNotificationInfo[] getNotificationInfo()
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{
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return new MBeanNotificationInfo[]
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{
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new MBeanNotificationInfo(new String[]
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{
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MemoryNotificationInfo.MEMORY_COLLECTION_THRESHOLD_EXCEEDED,
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MemoryNotificationInfo.MEMORY_THRESHOLD_EXCEEDED
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},
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Notification.class.getName(),
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"Memory Usage Notifications")
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};
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}
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public void removeNotificationListener(NotificationListener listener)
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throws ListenerNotFoundException
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{
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Iterator it = listeners.iterator();
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boolean foundOne = false;
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while (it.hasNext())
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{
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ListenerData data = (ListenerData) it.next();
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if (data.getListener() == listener)
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{
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it.remove();
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foundOne = true;
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}
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}
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if (!foundOne)
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throw new ListenerNotFoundException("The specified listener, " + listener +
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"is not registered with this bean.");
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}
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public void removeNotificationListener(NotificationListener listener,
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NotificationFilter filter,
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Object passback)
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throws ListenerNotFoundException
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{
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if (!(listeners.remove(new ListenerData(listener, filter, passback))))
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{
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throw new ListenerNotFoundException("The specified listener, " + listener +
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" with filter " + filter +
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"and passback " + passback +
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", is not registered with this bean.");
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}
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}
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void fireNotification(String type, String poolName, long init, long used,
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long committed, long max, long count)
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{
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Notification notif = new Notification(type, this, notificationCount);
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MemoryUsage usage = new MemoryUsage(init, used, committed, max);
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CompositeData data;
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try
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{
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data = new CompositeDataSupport(notifType,
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new String[] {
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"poolName", "usage", "count"
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},
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new Object[] {
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poolName, usage, Long.valueOf(count)
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});
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}
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catch (OpenDataException e)
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{
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throw new IllegalStateException("Something went wrong in creating " +
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"the composite data instance.", e);
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}
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notif.setUserData(data);
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Iterator it = listeners.iterator();
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while (it.hasNext())
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{
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ListenerData ldata = (ListenerData) it.next();
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NotificationFilter filter = ldata.getFilter();
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if (filter == null || filter.isNotificationEnabled(notif))
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ldata.getListener().handleNotification(notif, ldata.getPassback());
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}
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++notificationCount;
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}
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void fireThresholdExceededNotification(String poolName, long init,
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long used, long committed,
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long max, long count)
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{
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fireNotification(MemoryNotificationInfo.MEMORY_THRESHOLD_EXCEEDED,
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poolName, init, used, committed, max, count);
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}
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void fireCollectionThresholdExceededNotification(String poolName,
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long init,
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long used,
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long committed,
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long max,
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long count)
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{
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fireNotification(MemoryNotificationInfo.MEMORY_COLLECTION_THRESHOLD_EXCEEDED,
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poolName, init, used, committed, max, count);
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}
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}
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