--- /dev/null	2016-04-05 09:31:53.373418148 +0200
+++ new/src/java.base/share/classes/java/lang/reflect/ClassLoaderValue.java	2016-04-08 10:43:28.146663184 +0200
@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 2016, 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.
+ *
+ * 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 java.lang.reflect;
+
+import java.util.Objects;
+import java.util.function.BiFunction;
+
+/**
+ * root-ClassLoaderValue. Each instance defines a separate namespace for
+ * associated values.
+ * <p>
+ * ClassLoaderValue allows associating a
+ * {@link #computeIfAbsent(ClassLoader, BiFunction) computed} non-null value with
+ * a {@code (ClassLoader, keys...)} tuple. The associated value, as well as the
+ * keys are strongly reachable from the associated ClassLoader so care should be
+ * taken to use such keys and values that only reference types resolvable from
+ * the associated ClassLoader. Failing that, ClassLoader leaks are inevitable.
+ * <p>
+ * Example usage:
+ * <pre>{@code
+ * // create a root instance which represents a namespace and declares the type of
+ * // associated values (Class instances in this example)
+ * static final ClassLoaderValue<Class<?>> proxyClasses = new ClassLoaderValue<>();
+ *
+ * // create a compound key composed of a Module and a list of interfaces
+ * Module module = ...;
+ * List<Class<?>> interfaces = ...;
+ * ClassLoaderValue<Class<?>>.Sub<Module>.Sub<List<Class<?>>> key =
+ *     proxyClasses.sub(module).sub(interfaces);
+ *
+ * // use the compound key together with ClassLoader to lazily associate
+ * // the value with tuple (loader, module, interfaces) and return it
+ * ClassLoader loader = ...;
+ * Class<?> proxyClass = key.computeIfAbsent(loader, (ld, ky) -> {
+ *     List<Class<?>> intfcs = ky.key();
+ *     Module m = ky.parent().key();
+ *     Class<?> clazz = defineProxyClass(ld, m, intfcs);
+ *     return clazz;
+ * });
+ * }</pre>
+ * <p>
+ * {@code classLoaderValue.<operation>(classLoader, ...)} represents an operation
+ * to {@link #get}, {@link #putIfAbsent}, {@link #computeIfAbsent} or {@link #remove}
+ * a value associated with a (classLoader, classLoaderValue) tuple. ClassLoader
+ * instances and root-{@link ClassLoaderValue} instances are compared using
+ * identity equality while {@link Sub sub}-ClassLoaderValue instances define
+ * {@link #equals(Object) equality} in terms of equality of its
+ * {@link Sub#parent() parent} ClassLoaderValue and its
+ * {@link #key() key} component.
+ *
+ * @param <V> the type of value(s) associated with the root-ClassLoaderValue and
+ *            all its {@link #sub(Object) descendants}.
+ * @author Peter Levart
+ * @since 9
+ */
+final class ClassLoaderValue<V>
+    extends AbstractClassLoaderValue<ClassLoaderValue<V>, V> {
+
+    /**
+     * Constructs new root-ClassLoaderValue representing its own namespace.
+     */
+    public ClassLoaderValue() {}
+
+    /**
+     * @return the key component of this root-ClassLoaderValue (itself).
+     */
+    @Override
+    public ClassLoaderValue<V> key() {
+        return this;
+    }
+
+    /**
+     * root-ClassLoaderValue can only be equal to itself and has no predecessors.
+     */
+    @Override
+    public boolean isEqualOrDescendantOf(AbstractClassLoaderValue<?, V> clv) {
+        return equals(Objects.requireNonNull(clv));
+    }
+}