--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.management/share/classes/sun/management/MemoryUsageCompositeData.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2004, 2008, 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.MemoryUsage;
+import javax.management.openmbean.CompositeType;
+import javax.management.openmbean.CompositeData;
+import javax.management.openmbean.CompositeDataSupport;
+import javax.management.openmbean.OpenDataException;
+
+/**
+ * A CompositeData for MemoryUsage 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 MemoryUsageCompositeData extends LazyCompositeData {
+ private final MemoryUsage usage;
+
+ private MemoryUsageCompositeData(MemoryUsage u) {
+ this.usage = u;
+ }
+
+ public MemoryUsage getMemoryUsage() {
+ return usage;
+ }
+
+ public static CompositeData toCompositeData(MemoryUsage u) {
+ MemoryUsageCompositeData mucd = new MemoryUsageCompositeData(u);
+ return mucd.getCompositeData();
+ }
+
+ protected CompositeData getCompositeData() {
+ // CONTENTS OF THIS ARRAY MUST BE SYNCHRONIZED WITH
+ // memoryUsageItemNames!
+ final Object[] memoryUsageItemValues = {
+ usage.getInit(),
+ usage.getUsed(),
+ usage.getCommitted(),
+ usage.getMax(),
+ };
+
+ try {
+ return new CompositeDataSupport(memoryUsageCompositeType,
+ memoryUsageItemNames,
+ memoryUsageItemValues);
+ } catch (OpenDataException e) {
+ // Should never reach here
+ throw new AssertionError(e);
+ }
+ }
+
+ private static final CompositeType memoryUsageCompositeType;
+ static {
+ try {
+ memoryUsageCompositeType = (CompositeType)
+ MappedMXBeanType.toOpenType(MemoryUsage.class);
+ } catch (OpenDataException e) {
+ // Should never reach here
+ throw new AssertionError(e);
+ }
+ }
+
+ static CompositeType getMemoryUsageCompositeType() {
+ return memoryUsageCompositeType;
+ }
+
+ private static final String INIT = "init";
+ private static final String USED = "used";
+ private static final String COMMITTED = "committed";
+ private static final String MAX = "max";
+
+ private static final String[] memoryUsageItemNames = {
+ INIT,
+ USED,
+ COMMITTED,
+ MAX,
+ };
+
+ public static long getInit(CompositeData cd) {
+ return getLong(cd, INIT);
+ }
+ public static long getUsed(CompositeData cd) {
+ return getLong(cd, USED);
+ }
+ public static long getCommitted(CompositeData cd) {
+ return getLong(cd, COMMITTED);
+ }
+ public static long getMax(CompositeData cd) {
+ return getLong(cd, MAX);
+ }
+
+ /** 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(memoryUsageCompositeType, cd.getCompositeType())) {
+ throw new IllegalArgumentException(
+ "Unexpected composite type for MemoryUsage");
+ }
+ }
+
+ private static final long serialVersionUID = -8504291541083874143L;
+}