--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/java/lang/invoke/CountingMethodHandle.java	Wed Sep 07 21:05:24 2011 -0700
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2011, 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 java.lang.invoke;
+
+import static java.lang.invoke.MethodHandleNatives.Constants.*;
+
+/**
+ * This method handle is used to optionally provide a count of how
+ * many times it was invoked.
+ *
+ * @author never
+ */
+class CountingMethodHandle extends AdapterMethodHandle {
+    private int vmcount;
+
+    private CountingMethodHandle(MethodHandle target) {
+        super(target, target.type(), AdapterMethodHandle.makeConv(OP_RETYPE_ONLY));
+    }
+
+    /** Wrap the incoming MethodHandle in a CountingMethodHandle if they are enabled */
+    static MethodHandle wrap(MethodHandle mh) {
+        if (MethodHandleNatives.COUNT_GWT) {
+            return new CountingMethodHandle(mh);
+        }
+        return mh;
+    }
+}