diff -r 4ebc2e2fb97c -r 71c04702a3d5 src/java.management/share/classes/sun/management/counter/perf/PerfByteArrayCounter.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.management/share/classes/sun/management/counter/perf/PerfByteArrayCounter.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2003, 2004, 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.counter.perf;
+
+import sun.management.counter.*;
+import java.nio.*;
+
+public class PerfByteArrayCounter extends AbstractCounter
+       implements ByteArrayCounter {
+
+    ByteBuffer bb;
+
+    PerfByteArrayCounter(String name, Units u, Variability v,
+                         int flags, int vectorLength,
+                         ByteBuffer bb) {
+
+        super(name, u, v, flags, vectorLength);
+        this.bb = bb;
+    }
+
+    public Object getValue() {
+        return byteArrayValue();
+    }
+
+    /**
+     * Get a copy of the elements of the ByteArrayCounter.
+     */
+    public byte[] byteArrayValue() {
+
+        bb.position(0);
+        byte[] b = new byte[bb.limit()];
+
+        // copy the bytes
+        bb.get(b);
+
+        return b;
+    }
+
+    /**
+     * Get the value of an element of the ByteArrayCounter object.
+     */
+    public byte byteAt(int index) {
+        bb.position(index);
+        return bb.get();
+    }
+
+    public String toString() {
+        String result = getName() + ": " + new String(byteArrayValue()) +
+                        " " + getUnits();
+        if (isInternal()) {
+            return result + " [INTERNAL]";
+        } else {
+            return result;
+        }
+    }
+
+    /**
+     * Serialize as a snapshot object.
+     */
+    protected Object writeReplace() throws java.io.ObjectStreamException {
+       return new ByteArrayCounterSnapshot(getName(),
+                                           getUnits(),
+                                           getVariability(),
+                                           getFlags(),
+                                           getVectorLength(),
+                                           byteArrayValue());
+    }
+
+    private static final long serialVersionUID = 2545474036937279921L;
+}