| /* |
| * Copyright (c) 2005, 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.MonitorInfo; |
| import javax.management.openmbean.CompositeType; |
| import javax.management.openmbean.CompositeData; |
| import javax.management.openmbean.CompositeDataSupport; |
| import javax.management.openmbean.OpenDataException; |
| import java.util.Set; |
| |
| /** |
| * A CompositeData for MonitorInfo 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 MonitorInfoCompositeData extends LazyCompositeData { |
| private final MonitorInfo lock; |
| |
| private MonitorInfoCompositeData(MonitorInfo mi) { |
| this.lock = mi; |
| } |
| |
| public MonitorInfo getMonitorInfo() { |
| return lock; |
| } |
| |
| public static CompositeData toCompositeData(MonitorInfo mi) { |
| MonitorInfoCompositeData micd = new MonitorInfoCompositeData(mi); |
| return micd.getCompositeData(); |
| } |
| |
| protected CompositeData getCompositeData() { |
| // CONTENTS OF THIS ARRAY MUST BE SYNCHRONIZED WITH |
| // monitorInfoItemNames! |
| |
| int len = monitorInfoItemNames.length; |
| Object[] values = new Object[len]; |
| CompositeData li = LockInfoCompositeData.toCompositeData(lock); |
| |
| for (int i = 0; i < len; i++) { |
| String item = monitorInfoItemNames[i]; |
| if (item.equals(LOCKED_STACK_FRAME)) { |
| StackTraceElement ste = lock.getLockedStackFrame(); |
| values[i] = (ste != null ? StackTraceElementCompositeData. |
| toCompositeData(ste) |
| : null); |
| } else if (item.equals(LOCKED_STACK_DEPTH)) { |
| values[i] = lock.getLockedStackDepth(); |
| } else { |
| values[i] = li.get(item); |
| } |
| } |
| |
| try { |
| return new CompositeDataSupport(monitorInfoCompositeType, |
| monitorInfoItemNames, |
| values); |
| } catch (OpenDataException e) { |
| // Should never reach here |
| throw new AssertionError(e); |
| } |
| } |
| |
| private static final CompositeType monitorInfoCompositeType; |
| private static final String[] monitorInfoItemNames; |
| static { |
| try { |
| monitorInfoCompositeType = (CompositeType) |
| MappedMXBeanType.toOpenType(MonitorInfo.class); |
| Set<String> s = monitorInfoCompositeType.keySet(); |
| monitorInfoItemNames = s.toArray(new String[0]); |
| } catch (OpenDataException e) { |
| // Should never reach here |
| throw new AssertionError(e); |
| } |
| } |
| |
| static CompositeType getMonitorInfoCompositeType() { |
| return monitorInfoCompositeType; |
| } |
| |
| private static final String CLASS_NAME = "className"; |
| private static final String IDENTITY_HASH_CODE = "identityHashCode"; |
| private static final String LOCKED_STACK_FRAME = "lockedStackFrame"; |
| private static final String LOCKED_STACK_DEPTH = "lockedStackDepth"; |
| |
| public static String getClassName(CompositeData cd) { |
| return getString(cd, CLASS_NAME); |
| } |
| |
| public static int getIdentityHashCode(CompositeData cd) { |
| return getInt(cd, IDENTITY_HASH_CODE); |
| } |
| |
| public static StackTraceElement getLockedStackFrame(CompositeData cd) { |
| CompositeData ste = (CompositeData) cd.get(LOCKED_STACK_FRAME); |
| if (ste != null) { |
| return StackTraceElementCompositeData.from(ste); |
| } else { |
| return null; |
| } |
| } |
| |
| public static int getLockedStackDepth(CompositeData cd) { |
| return getInt(cd, LOCKED_STACK_DEPTH); |
| } |
| |
| /** Validate if the input CompositeData has the expected |
| * CompositeType (i.e. contain all attributes with expected |
| * names and types). |
| */ |
| public static void validateCompositeData(CompositeData cd) { |
| if (cd == null) { |
| throw new NullPointerException("Null CompositeData"); |
| } |
| |
| if (!isTypeMatched(monitorInfoCompositeType, cd.getCompositeType())) { |
| throw new IllegalArgumentException( |
| "Unexpected composite type for MonitorInfo"); |
| } |
| } |
| |
| private static final long serialVersionUID = -5825215591822908529L; |
| } |