diff -r 4ebc2e2fb97c -r 71c04702a3d5 src/java.management/share/classes/sun/management/counter/perf/PerfLongArrayCounter.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.management/share/classes/sun/management/counter/perf/PerfLongArrayCounter.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,85 @@
+/*
+ * 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.LongBuffer;
+import java.nio.ReadOnlyBufferException;
+
+public class PerfLongArrayCounter extends AbstractCounter
+       implements LongArrayCounter {
+
+    LongBuffer lb;
+
+    PerfLongArrayCounter(String name, Units u, Variability v,
+                         int flags, int vectorLength,
+                         LongBuffer lb) {
+
+        super(name, u, v, flags, vectorLength);
+        this.lb = lb;
+    }
+
+    public Object getValue() {
+        return longArrayValue();
+    }
+
+    /**
+     * Get a copy of the elements of the LongArrayCounter.
+     */
+    public long[] longArrayValue() {
+
+        lb.position(0);
+        long[] l = new long[lb.limit()];
+
+        // copy the bytes
+        lb.get(l);
+
+        return l;
+    }
+
+    /**
+     * Get the value of an element of the LongArrayCounter object.
+     */
+    public long longAt(int index) {
+        lb.position(index);
+        return lb.get();
+    }
+
+    /**
+     * Serialize as a snapshot object.
+     */
+    protected Object writeReplace() throws java.io.ObjectStreamException {
+        return new LongArrayCounterSnapshot(getName(),
+                                            getUnits(),
+                                            getVariability(),
+                                            getFlags(),
+                                            getVectorLength(),
+                                            longArrayValue());
+    }
+
+    private static final long serialVersionUID = -2733617913045487126L;
+}