/*

 * 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

 * particular file as subject to the "Classpath" exception as provided

 *

 * 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.

 *

 */

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;

}