--- /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;
+}