/*

 * 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;

import java.io.IOException;

import java.io.ObjectOutputStream;

import java.io.ObjectInputStream;

/**

 */

public abstract class AbstractCounter implements Counter {

    String name;

    Units units;

    Variability variability;

    int flags;

    int vectorLength;

    // Flags defined in hotspot implementation

    class Flags {

        static final int SUPPORTED = 0x1;

    }

    protected AbstractCounter(String name, Units units,

                              Variability variability, int flags,

                              int vectorLength) {

        this.name = name;

        this.units = units;

        this.variability = variability;

        this.flags = flags;

        this.vectorLength = vectorLength;

    }

    protected AbstractCounter(String name, Units units,

                              Variability variability, int flags) {

        this(name, units, variability, flags, 0);

    }

    /**

     * Returns the name of the Performance Counter

     */

    public String getName() {

        return name;

    }

    /**

     * Returns the Units for this Performance Counter

     */

    public Units getUnits() {

        return units;

    }

    /**

     * Returns the Variability for this performance Object

     */

    public Variability getVariability() {

        return variability;

    }

    /**

     * Return true if this performance counter is a vector

     */

    public boolean isVector() {

        return vectorLength > 0;

    }

    /**

     * return the length of the vector

     */

    public int getVectorLength() {

        return vectorLength;

    }

    public boolean isInternal() {

        return (flags & Flags.SUPPORTED) == 0;

    }

    /**

     * return the flags associated with the counter.

     */

    public int getFlags() {

        return flags;

    }

    public abstract Object getValue();

    public String toString() {

        String result = getName() + ": " + getValue() + " " + getUnits();

        if (isInternal()) {

            return result + " [INTERNAL]";

        } else {

            return result;

        }

    }

    private static final long serialVersionUID = 6992337162326171013L;

}