author | mchung |
Fri, 14 Sep 2012 09:47:14 -0700 | |
changeset 13803 | 889df16bef60 |
child 25522 | 10d789df41bb |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package sun.management; |
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|
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import java.lang.management.LockInfo; |
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import javax.management.openmbean.CompositeType; |
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import javax.management.openmbean.CompositeData; |
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import javax.management.openmbean.CompositeDataSupport; |
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import javax.management.openmbean.OpenDataException; |
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/** |
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* A CompositeData for LockInfo for the local management support. |
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* This class avoids the performance penalty paid to the |
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* construction of a CompositeData use in the local case. |
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*/ |
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public class LockInfoCompositeData extends LazyCompositeData { |
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private final LockInfo lock; |
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private LockInfoCompositeData(LockInfo li) { |
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this.lock = li; |
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} |
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public LockInfo getLockInfo() { |
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return lock; |
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} |
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public static CompositeData toCompositeData(LockInfo li) { |
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if (li == null) { |
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return null; |
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} |
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LockInfoCompositeData licd = new LockInfoCompositeData(li); |
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return licd.getCompositeData(); |
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} |
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protected CompositeData getCompositeData() { |
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// CONTENTS OF THIS ARRAY MUST BE SYNCHRONIZED WITH |
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// lockInfoItemNames! |
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final Object[] lockInfoItemValues = { |
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new String(lock.getClassName()), |
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new Integer(lock.getIdentityHashCode()), |
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}; |
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try { |
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return new CompositeDataSupport(lockInfoCompositeType, |
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lockInfoItemNames, |
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lockInfoItemValues); |
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} catch (OpenDataException e) { |
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// Should never reach here |
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throw Util.newException(e); |
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} |
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} |
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private static final CompositeType lockInfoCompositeType; |
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static { |
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try { |
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lockInfoCompositeType = (CompositeType) |
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MappedMXBeanType.toOpenType(LockInfo.class); |
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} catch (OpenDataException e) { |
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// Should never reach here |
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throw Util.newException(e); |
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} |
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} |
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static CompositeType getLockInfoCompositeType() { |
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return lockInfoCompositeType; |
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} |
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private static final String CLASS_NAME = "className"; |
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private static final String IDENTITY_HASH_CODE = "identityHashCode"; |
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private static final String[] lockInfoItemNames = { |
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CLASS_NAME, |
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IDENTITY_HASH_CODE, |
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}; |
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/* |
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* Returns a LockInfo object mapped from the given CompositeData. |
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*/ |
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public static LockInfo toLockInfo(CompositeData cd) { |
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if (cd == null) { |
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throw new NullPointerException("Null CompositeData"); |
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} |
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if (!isTypeMatched(lockInfoCompositeType, cd.getCompositeType())) { |
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throw new IllegalArgumentException( |
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"Unexpected composite type for LockInfo"); |
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} |
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String className = getString(cd, CLASS_NAME); |
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int identityHashCode = getInt(cd, IDENTITY_HASH_CODE); |
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return new LockInfo(className, identityHashCode); |
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} |
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private static final long serialVersionUID = -6374759159749014052L; |
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} |