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 | } | ||