132 lines
4.8 KiB
Java
132 lines
4.8 KiB
Java
/*
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* Copyright (c) 2004, 2008, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.management;
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import java.lang.management.MemoryNotificationInfo;
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import java.lang.management.MemoryUsage;
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import javax.management.openmbean.CompositeData;
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import javax.management.openmbean.CompositeType;
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import javax.management.openmbean.CompositeDataSupport;
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import javax.management.openmbean.OpenDataException;
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/**
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* A CompositeData for MemoryNotificationInfo for the local management support.
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* This class avoids the performance penalty paid to the
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* construction of a CompositeData use in the local case.
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*/
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public class MemoryNotifInfoCompositeData extends LazyCompositeData {
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private final MemoryNotificationInfo memoryNotifInfo;
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private MemoryNotifInfoCompositeData(MemoryNotificationInfo info) {
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this.memoryNotifInfo = info;
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}
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public MemoryNotificationInfo getMemoryNotifInfo() {
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return memoryNotifInfo;
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}
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public static CompositeData toCompositeData(MemoryNotificationInfo info) {
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MemoryNotifInfoCompositeData mnicd =
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new MemoryNotifInfoCompositeData(info);
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return mnicd.getCompositeData();
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}
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protected CompositeData getCompositeData() {
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// CONTENTS OF THIS ARRAY MUST BE SYNCHRONIZED WITH
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// memoryNotifInfoItemNames!
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final Object[] memoryNotifInfoItemValues = {
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memoryNotifInfo.getPoolName(),
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MemoryUsageCompositeData.toCompositeData(memoryNotifInfo.getUsage()),
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new Long(memoryNotifInfo.getCount()),
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};
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try {
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return new CompositeDataSupport(memoryNotifInfoCompositeType,
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memoryNotifInfoItemNames,
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memoryNotifInfoItemValues);
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} catch (OpenDataException e) {
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// Should never reach here
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throw new AssertionError(e);
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}
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}
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private static final CompositeType memoryNotifInfoCompositeType;
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static {
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try {
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memoryNotifInfoCompositeType = (CompositeType)
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MappedMXBeanType.toOpenType(MemoryNotificationInfo.class);
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} catch (OpenDataException e) {
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// Should never reach here
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throw new AssertionError(e);
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}
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}
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private static final String POOL_NAME = "poolName";
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private static final String USAGE = "usage";
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private static final String COUNT = "count";
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private static final String[] memoryNotifInfoItemNames = {
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POOL_NAME,
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USAGE,
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COUNT,
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};
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public static String getPoolName(CompositeData cd) {
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String poolname = getString(cd, POOL_NAME);
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if (poolname == null) {
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throw new IllegalArgumentException("Invalid composite data: " +
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"Attribute " + POOL_NAME + " has null value");
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}
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return poolname;
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}
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public static MemoryUsage getUsage(CompositeData cd) {
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CompositeData usageData = (CompositeData) cd.get(USAGE);
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return MemoryUsage.from(usageData);
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}
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public static long getCount(CompositeData cd) {
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return getLong(cd, COUNT);
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}
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/** Validate if the input CompositeData has the expected
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* CompositeType (i.e. contain all attributes with expected
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* names and types).
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*/
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public static void validateCompositeData(CompositeData cd) {
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if (cd == null) {
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throw new NullPointerException("Null CompositeData");
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}
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if (!isTypeMatched(memoryNotifInfoCompositeType, cd.getCompositeType())) {
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throw new IllegalArgumentException(
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"Unexpected composite type for MemoryNotificationInfo");
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}
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}
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private static final long serialVersionUID = -1805123446483771291L;
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}
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