| /* |
| * Copyright (c) 2004, 2008, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.management; |
| |
| import java.lang.management.MemoryUsage; |
| import javax.management.openmbean.CompositeType; |
| import javax.management.openmbean.CompositeData; |
| import javax.management.openmbean.CompositeDataSupport; |
| import javax.management.openmbean.OpenDataException; |
| |
| /** |
| * A CompositeData for MemoryUsage for the local management support. |
| * This class avoids the performance penalty paid to the |
| * construction of a CompositeData use in the local case. |
| */ |
| public class MemoryUsageCompositeData extends LazyCompositeData { |
| private final MemoryUsage usage; |
| |
| private MemoryUsageCompositeData(MemoryUsage u) { |
| this.usage = u; |
| } |
| |
| public MemoryUsage getMemoryUsage() { |
| return usage; |
| } |
| |
| public static CompositeData toCompositeData(MemoryUsage u) { |
| MemoryUsageCompositeData mucd = new MemoryUsageCompositeData(u); |
| return mucd.getCompositeData(); |
| } |
| |
| protected CompositeData getCompositeData() { |
| // CONTENTS OF THIS ARRAY MUST BE SYNCHRONIZED WITH |
| // memoryUsageItemNames! |
| final Object[] memoryUsageItemValues = { |
| usage.getInit(), |
| usage.getUsed(), |
| usage.getCommitted(), |
| usage.getMax(), |
| }; |
| |
| try { |
| return new CompositeDataSupport(memoryUsageCompositeType, |
| memoryUsageItemNames, |
| memoryUsageItemValues); |
| } catch (OpenDataException e) { |
| // Should never reach here |
| throw new AssertionError(e); |
| } |
| } |
| |
| private static final CompositeType memoryUsageCompositeType; |
| static { |
| try { |
| memoryUsageCompositeType = (CompositeType) |
| MappedMXBeanType.toOpenType(MemoryUsage.class); |
| } catch (OpenDataException e) { |
| // Should never reach here |
| throw new AssertionError(e); |
| } |
| } |
| |
| static CompositeType getMemoryUsageCompositeType() { |
| return memoryUsageCompositeType; |
| } |
| |
| private static final String INIT = "init"; |
| private static final String USED = "used"; |
| private static final String COMMITTED = "committed"; |
| private static final String MAX = "max"; |
| |
| private static final String[] memoryUsageItemNames = { |
| INIT, |
| USED, |
| COMMITTED, |
| MAX, |
| }; |
| |
| public static long getInit(CompositeData cd) { |
| return getLong(cd, INIT); |
| } |
| public static long getUsed(CompositeData cd) { |
| return getLong(cd, USED); |
| } |
| public static long getCommitted(CompositeData cd) { |
| return getLong(cd, COMMITTED); |
| } |
| public static long getMax(CompositeData cd) { |
| return getLong(cd, MAX); |
| } |
| |
| /** Validate if the input CompositeData has the expected |
| * CompositeType (i.e. contain all attributes with expected |
| * names and types). |
| */ |
| public static void validateCompositeData(CompositeData cd) { |
| if (cd == null) { |
| throw new NullPointerException("Null CompositeData"); |
| } |
| |
| if (!isTypeMatched(memoryUsageCompositeType, cd.getCompositeType())) { |
| throw new IllegalArgumentException( |
| "Unexpected composite type for MemoryUsage"); |
| } |
| } |
| |
| private static final long serialVersionUID = -8504291541083874143L; |
| } |