jdk/src/jdk.management/share/classes/com/sun/management/internal/GarbageCollectionNotifInfoCompositeData.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/jdk.management/share/classes/com/sun/management/internal/GarbageCollectionNotifInfoCompositeData.java Fri Apr 17 09:40:02 2015 +0200
@@ -0,0 +1,217 @@
+/*
+ * Copyright (c) 2011, 2015, 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 com.sun.management.internal;
+
+import com.sun.management.GarbageCollectionNotificationInfo;
+import com.sun.management.GcInfo;
+import javax.management.openmbean.CompositeData;
+import javax.management.openmbean.CompositeType;
+import javax.management.openmbean.CompositeDataSupport;
+import javax.management.openmbean.OpenDataException;
+import javax.management.openmbean.OpenType;
+import javax.management.openmbean.SimpleType;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.lang.reflect.Field;
+import java.util.HashMap;
+import sun.management.LazyCompositeData;
+import static sun.management.LazyCompositeData.getString;
+import sun.management.Util;
+
+/**
+ * A CompositeData for GarbageCollectionNotificationInfo 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 GarbageCollectionNotifInfoCompositeData extends LazyCompositeData {
+ private final GarbageCollectionNotificationInfo gcNotifInfo;
+
+ public GarbageCollectionNotifInfoCompositeData(GarbageCollectionNotificationInfo info) {
+ this.gcNotifInfo = info;
+ }
+
+ public GarbageCollectionNotificationInfo getGarbageCollectionNotifInfo() {
+ return gcNotifInfo;
+ }
+
+ public static CompositeData toCompositeData(GarbageCollectionNotificationInfo info) {
+ GarbageCollectionNotifInfoCompositeData gcnicd =
+ new GarbageCollectionNotifInfoCompositeData(info);
+ return gcnicd.getCompositeData();
+ }
+
+ private CompositeType getCompositeTypeByBuilder() {
+ final GcInfoBuilder builder = AccessController.doPrivileged (new PrivilegedAction<GcInfoBuilder>() {
+ public GcInfoBuilder run() {
+ try {
+ Class<?> cl = Class.forName("com.sun.management.GcInfo");
+ Field f = cl.getDeclaredField("builder");
+ f.setAccessible(true);
+ return (GcInfoBuilder)f.get(gcNotifInfo.getGcInfo());
+ } catch(ClassNotFoundException | NoSuchFieldException | IllegalAccessException e) {
+ return null;
+ }
+ }
+ });
+ CompositeType gict = null;
+ synchronized(compositeTypeByBuilder) {
+ gict = compositeTypeByBuilder.get(builder);
+ if(gict == null) {
+ OpenType<?>[] gcNotifInfoItemTypes = new OpenType<?>[] {
+ SimpleType.STRING,
+ SimpleType.STRING,
+ SimpleType.STRING,
+ builder.getGcInfoCompositeType(),
+ };
+ try {
+ final String typeName =
+ "sun.management.GarbageCollectionNotifInfoCompositeType";
+ gict = new CompositeType(typeName,
+ "CompositeType for GC notification info",
+ gcNotifInfoItemNames,
+ gcNotifInfoItemNames,
+ gcNotifInfoItemTypes);
+ compositeTypeByBuilder.put(builder,gict);
+ } catch (OpenDataException e) {
+ // shouldn't reach here
+ throw new RuntimeException(e);
+ }
+ }
+ }
+ return gict;
+ }
+
+ protected CompositeData getCompositeData() {
+ // CONTENTS OF THIS ARRAY MUST BE SYNCHRONIZED WITH
+ // gcNotifInfoItemNames!
+ final Object[] gcNotifInfoItemValues;
+ gcNotifInfoItemValues = new Object[] {
+ gcNotifInfo.getGcName(),
+ gcNotifInfo.getGcAction(),
+ gcNotifInfo.getGcCause(),
+ GcInfoCompositeData.toCompositeData(gcNotifInfo.getGcInfo())
+ };
+
+ CompositeType gict = getCompositeTypeByBuilder();
+
+ try {
+ return new CompositeDataSupport(gict,
+ gcNotifInfoItemNames,
+ gcNotifInfoItemValues);
+ } catch (OpenDataException e) {
+ // Should never reach here
+ throw new AssertionError(e);
+ }
+ }
+
+ // private static MappedMXBeanType gcInfoMapType;
+ private static final String GC_NAME = "gcName";
+ private static final String GC_ACTION = "gcAction";
+ private static final String GC_CAUSE = "gcCause";
+ private static final String GC_INFO = "gcInfo";
+ private static final String[] gcNotifInfoItemNames = {
+ GC_NAME,
+ GC_ACTION,
+ GC_CAUSE,
+ GC_INFO
+ };
+ private static HashMap<GcInfoBuilder,CompositeType> compositeTypeByBuilder =
+ new HashMap<>();
+
+ public static String getGcName(CompositeData cd) {
+ String gcname = getString(cd, GC_NAME);
+ if (gcname == null) {
+ throw new IllegalArgumentException("Invalid composite data: " +
+ "Attribute " + GC_NAME + " has null value");
+ }
+ return gcname;
+ }
+
+ public static String getGcAction(CompositeData cd) {
+ String gcaction = getString(cd, GC_ACTION);
+ if (gcaction == null) {
+ throw new IllegalArgumentException("Invalid composite data: " +
+ "Attribute " + GC_ACTION + " has null value");
+ }
+ return gcaction;
+ }
+
+ public static String getGcCause(CompositeData cd) {
+ String gccause = getString(cd, GC_CAUSE);
+ if (gccause == null) {
+ throw new IllegalArgumentException("Invalid composite data: " +
+ "Attribute " + GC_CAUSE + " has null value");
+ }
+ return gccause;
+ }
+
+ public static GcInfo getGcInfo(CompositeData cd) {
+ CompositeData gcInfoData = (CompositeData) cd.get(GC_INFO);
+ return GcInfo.from(gcInfoData);
+ }
+
+ /** 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( getBaseGcNotifInfoCompositeType(), cd.getCompositeType())) {
+ throw new IllegalArgumentException(
+ "Unexpected composite type for GarbageCollectionNotificationInfo");
+ }
+ }
+
+ // This is only used for validation.
+ private static CompositeType baseGcNotifInfoCompositeType = null;
+ private static synchronized CompositeType getBaseGcNotifInfoCompositeType() {
+ if (baseGcNotifInfoCompositeType == null) {
+ try {
+ OpenType<?>[] baseGcNotifInfoItemTypes = new OpenType<?>[] {
+ SimpleType.STRING,
+ SimpleType.STRING,
+ SimpleType.STRING,
+ GcInfoCompositeData.getBaseGcInfoCompositeType()
+ };
+ baseGcNotifInfoCompositeType =
+ new CompositeType("sun.management.BaseGarbageCollectionNotifInfoCompositeType",
+ "CompositeType for Base GarbageCollectionNotificationInfo",
+ gcNotifInfoItemNames,
+ gcNotifInfoItemNames,
+ baseGcNotifInfoItemTypes);
+ } catch (OpenDataException e) {
+ // shouldn't reach here
+ throw new RuntimeException(e);
+ }
+ }
+ return baseGcNotifInfoCompositeType;
+ }
+
+ private static final long serialVersionUID = -1805123446483771292L;
+}