Showing the changes to java/pkg/sun/management/MonitorInfoCompositeData.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 2005, 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.MonitorInfo; | |
| 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 | +import java.util.Set; | |
| 34 | + | |
| 35 | +/** | |
| 36 | + * A CompositeData for MonitorInfo for the local management support. | |
| 37 | + * This class avoids the performance penalty paid to the | |
| 38 | + * construction of a CompositeData use in the local case. | |
| 39 | + */ | |
| 40 | +public class MonitorInfoCompositeData extends LazyCompositeData { | |
| 41 | + private final MonitorInfo lock; | |
| 42 | + | |
| 43 | + private MonitorInfoCompositeData(MonitorInfo mi) { | |
| 44 | + this.lock = mi; | |
| 45 | + } | |
| 46 | + | |
| 47 | + public MonitorInfo getMonitorInfo() { | |
| 48 | + return lock; | |
| 49 | + } | |
| 50 | + | |
| 51 | + public static CompositeData toCompositeData(MonitorInfo mi) { | |
| 52 | + MonitorInfoCompositeData micd = new MonitorInfoCompositeData(mi); | |
| 53 | + return micd.getCompositeData(); | |
| 54 | + } | |
| 55 | + | |
| 56 | + protected CompositeData getCompositeData() { | |
| 57 | + // CONTENTS OF THIS ARRAY MUST BE SYNCHRONIZED WITH | |
| 58 | + // monitorInfoItemNames! | |
| 59 | + | |
| 60 | + int len = monitorInfoItemNames.length; | |
| 61 | + Object[] values = new Object[len]; | |
| 62 | + CompositeData li = LockDataConverter.toLockInfoCompositeData(lock); | |
| 63 | + | |
| 64 | + for (int i = 0; i < len; i++) { | |
| 65 | + String item = monitorInfoItemNames[i]; | |
| 66 | + if (item.equals(LOCKED_STACK_FRAME)) { | |
| 67 | + StackTraceElement ste = lock.getLockedStackFrame(); | |
| 68 | + values[i] = (ste != null ? StackTraceElementCompositeData. | |
| 69 | + toCompositeData(ste) | |
| 70 | + : null); | |
| 71 | + } else if (item.equals(LOCKED_STACK_DEPTH)) { | |
| 72 | + values[i] = new Integer(lock.getLockedStackDepth()); | |
| 73 | + } else { | |
| 74 | + values[i] = li.get(item); | |
| 75 | + } | |
| 76 | + } | |
| 77 | + | |
| 78 | + try { | |
| 79 | + return new CompositeDataSupport(monitorInfoCompositeType, | |
| 80 | + monitorInfoItemNames, | |
| 81 | + values); | |
| 82 | + } catch (OpenDataException e) { | |
| 83 | + // Should never reach here | |
| 84 | + throw new AssertionError(e); | |
| 85 | + } | |
| 86 | + } | |
| 87 | + | |
| 88 | + private static final CompositeType monitorInfoCompositeType; | |
| 89 | + private static final String[] monitorInfoItemNames; | |
| 90 | + static { | |
| 91 | + try { | |
| 92 | + monitorInfoCompositeType = (CompositeType) | |
| 93 | + MappedMXBeanType.toOpenType(MonitorInfo.class); | |
| 94 | + Set<String> s = monitorInfoCompositeType.keySet(); | |
| 95 | + monitorInfoItemNames = (String[]) s.toArray(new String[0]); | |
| 96 | + } catch (OpenDataException e) { | |
| 97 | + // Should never reach here | |
| 98 | + throw new AssertionError(e); | |
| 99 | + } | |
| 100 | + } | |
| 101 | + | |
| 102 | + static CompositeType getMonitorInfoCompositeType() { | |
| 103 | + return monitorInfoCompositeType; | |
| 104 | + } | |
| 105 | + | |
| 106 | + private static final String CLASS_NAME = "className"; | |
| 107 | + private static final String IDENTITY_HASH_CODE = "identityHashCode"; | |
| 108 | + private static final String LOCKED_STACK_FRAME = "lockedStackFrame"; | |
| 109 | + private static final String LOCKED_STACK_DEPTH = "lockedStackDepth"; | |
| 110 | + | |
| 111 | + public static String getClassName(CompositeData cd) { | |
| 112 | + return getString(cd, CLASS_NAME); | |
| 113 | + } | |
| 114 | + | |
| 115 | + public static int getIdentityHashCode(CompositeData cd) { | |
| 116 | + return getInt(cd, IDENTITY_HASH_CODE); | |
| 117 | + } | |
| 118 | + | |
| 119 | + public static StackTraceElement getLockedStackFrame(CompositeData cd) { | |
| 120 | + CompositeData ste = (CompositeData) cd.get(LOCKED_STACK_FRAME); | |
| 121 | + if (ste != null) { | |
| 122 | + return StackTraceElementCompositeData.from(ste); | |
| 123 | + } else { | |
| 124 | + return null; | |
| 125 | + } | |
| 126 | + } | |
| 127 | + | |
| 128 | + public static int getLockedStackDepth(CompositeData cd) { | |
| 129 | + return getInt(cd, LOCKED_STACK_DEPTH); | |
| 130 | + } | |
| 131 | + | |
| 132 | + /** Validate if the input CompositeData has the expected | |
| 133 | + * CompositeType (i.e. contain all attributes with expected | |
| 134 | + * names and types). | |
| 135 | + */ | |
| 136 | + public static void validateCompositeData(CompositeData cd) { | |
| 137 | + if (cd == null) { | |
| 138 | + throw new NullPointerException("Null CompositeData"); | |
| 139 | + } | |
| 140 | + | |
| 141 | + if (!isTypeMatched(monitorInfoCompositeType, cd.getCompositeType())) { | |
| 142 | + throw new IllegalArgumentException( | |
| 143 | + "Unexpected composite type for MonitorInfo"); | |
| 144 | + } | |
| 145 | + } | |
| 146 | + | |
| 147 | + private static final long serialVersionUID = -5825215591822908529L; | |
| 148 | +} | |