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