1 /*

     2  * Copyright 2003-2004 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Sun designates this

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

     9  * by Sun in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    22  * CA 95054 USA or visit www.sun.com if you need additional information or

    23  * have any questions.

    24  */

    25 

    26 package sun.management.counter.perf;

    27 

    28 import sun.management.counter.*;

    29 import java.nio.LongBuffer;

    30 import java.nio.ReadOnlyBufferException;

    31 

    32 public class PerfLongCounter extends AbstractCounter

    33        implements LongCounter {

    34 

    35     LongBuffer lb;

    36 

    37     // package private

    38     PerfLongCounter(String name, Units u, Variability v, int flags,

    39                     LongBuffer lb) {

    40         super(name, u, v, flags);

    41         this.lb = lb;

    42     }

    43 

    44     public Object getValue() {

    45         return new Long(lb.get(0));

    46     }

    47 

    48     /**

    49      * Get the value of this Long performance counter

    50      */

    51     public long longValue() {

    52         return lb.get(0);

    53     }

    54 

    55     /**

    56      * Serialize as a snapshot object.

    57      */

    58     protected Object writeReplace() throws java.io.ObjectStreamException {

    59         return new LongCounterSnapshot(getName(),

    60                                        getUnits(),

    61                                        getVariability(),

    62                                        getFlags(),

    63                                        longValue());

    64     }

    65 }