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My first initial commit with all of mine experimental changes.

Dmitry Kabak (userdima committed 13 years ago

Commit d37b88d1 parent 3f5b46618352 files · +2598093 −-8690Browse files

Showing the changes to java/pkg/sun/management/MonitorInfoCompositeData.java (1 of 18352 files). Show all

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java/pkg/sun/management/MonitorInfoCompositeData.java+148−0
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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
26package sun.management;
27
28import java.lang.management.MonitorInfo;
29import javax.management.openmbean.CompositeType;
30import javax.management.openmbean.CompositeData;
31import javax.management.openmbean.CompositeDataSupport;
32import javax.management.openmbean.OpenDataException;
33import 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 */
40public 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}