Showing the changes to java/pkg/sun/management/MemoryUsageCompositeData.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 2004, 2008, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package sun.management; | |
| 27 | + | |
| 28 | +import java.lang.management.MemoryUsage; | |
| 29 | +import javax.management.openmbean.CompositeType; | |
| 30 | +import javax.management.openmbean.CompositeData; | |
| 31 | +import javax.management.openmbean.CompositeDataSupport; | |
| 32 | +import javax.management.openmbean.OpenDataException; | |
| 33 | + | |
| 34 | +/** | |
| 35 | + * A CompositeData for MemoryUsage for the local management support. | |
| 36 | + * This class avoids the performance penalty paid to the | |
| 37 | + * construction of a CompositeData use in the local case. | |
| 38 | + */ | |
| 39 | +public class MemoryUsageCompositeData extends LazyCompositeData { | |
| 40 | + private final MemoryUsage usage; | |
| 41 | + | |
| 42 | + private MemoryUsageCompositeData(MemoryUsage u) { | |
| 43 | + this.usage = u; | |
| 44 | + } | |
| 45 | + | |
| 46 | + public MemoryUsage getMemoryUsage() { | |
| 47 | + return usage; | |
| 48 | + } | |
| 49 | + | |
| 50 | + public static CompositeData toCompositeData(MemoryUsage u) { | |
| 51 | + MemoryUsageCompositeData mucd = new MemoryUsageCompositeData(u); | |
| 52 | + return mucd.getCompositeData(); | |
| 53 | + } | |
| 54 | + | |
| 55 | + protected CompositeData getCompositeData() { | |
| 56 | + // CONTENTS OF THIS ARRAY MUST BE SYNCHRONIZED WITH | |
| 57 | + // memoryUsageItemNames! | |
| 58 | + final Object[] memoryUsageItemValues = { | |
| 59 | + new Long(usage.getInit()), | |
| 60 | + new Long(usage.getUsed()), | |
| 61 | + new Long(usage.getCommitted()), | |
| 62 | + new Long(usage.getMax()), | |
| 63 | + }; | |
| 64 | + | |
| 65 | + try { | |
| 66 | + return new CompositeDataSupport(memoryUsageCompositeType, | |
| 67 | + memoryUsageItemNames, | |
| 68 | + memoryUsageItemValues); | |
| 69 | + } catch (OpenDataException e) { | |
| 70 | + // Should never reach here | |
| 71 | + throw new AssertionError(e); | |
| 72 | + } | |
| 73 | + } | |
| 74 | + | |
| 75 | + private static final CompositeType memoryUsageCompositeType; | |
| 76 | + static { | |
| 77 | + try { | |
| 78 | + memoryUsageCompositeType = (CompositeType) | |
| 79 | + MappedMXBeanType.toOpenType(MemoryUsage.class); | |
| 80 | + } catch (OpenDataException e) { | |
| 81 | + // Should never reach here | |
| 82 | + throw new AssertionError(e); | |
| 83 | + } | |
| 84 | + } | |
| 85 | + | |
| 86 | + static CompositeType getMemoryUsageCompositeType() { | |
| 87 | + return memoryUsageCompositeType; | |
| 88 | + } | |
| 89 | + | |
| 90 | + private static final String INIT = "init"; | |
| 91 | + private static final String USED = "used"; | |
| 92 | + private static final String COMMITTED = "committed"; | |
| 93 | + private static final String MAX = "max"; | |
| 94 | + | |
| 95 | + private static final String[] memoryUsageItemNames = { | |
| 96 | + INIT, | |
| 97 | + USED, | |
| 98 | + COMMITTED, | |
| 99 | + MAX, | |
| 100 | + }; | |
| 101 | + | |
| 102 | + public static long getInit(CompositeData cd) { | |
| 103 | + return getLong(cd, INIT); | |
| 104 | + } | |
| 105 | + public static long getUsed(CompositeData cd) { | |
| 106 | + return getLong(cd, USED); | |
| 107 | + } | |
| 108 | + public static long getCommitted(CompositeData cd) { | |
| 109 | + return getLong(cd, COMMITTED); | |
| 110 | + } | |
| 111 | + public static long getMax(CompositeData cd) { | |
| 112 | + return getLong(cd, MAX); | |
| 113 | + } | |
| 114 | + | |
| 115 | + /** Validate if the input CompositeData has the expected | |
| 116 | + * CompositeType (i.e. contain all attributes with expected | |
| 117 | + * names and types). | |
| 118 | + */ | |
| 119 | + public static void validateCompositeData(CompositeData cd) { | |
| 120 | + if (cd == null) { | |
| 121 | + throw new NullPointerException("Null CompositeData"); | |
| 122 | + } | |
| 123 | + | |
| 124 | + if (!isTypeMatched(memoryUsageCompositeType, cd.getCompositeType())) { | |
| 125 | + throw new IllegalArgumentException( | |
| 126 | + "Unexpected composite type for MemoryUsage"); | |
| 127 | + } | |
| 128 | + } | |
| 129 | + | |
| 130 | + private static final long serialVersionUID = -8504291541083874143L; | |
| 131 | +} | |