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/* * 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; }