/*
* Copyright (c) 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.jvmstat.perfdata.monitor;
import sun.jvmstat.monitor.*;
import sun.management.counter.Units;
import sun.management.counter.Variability;
import java.nio.LongBuffer;
/**
* Class for monitoring a PerfData Long instrument.
*
* @author Brian Doherty
* @since 1.5
*/
public class PerfLongMonitor extends AbstractMonitor implements LongMonitor {
/**
* The buffer containing the data for the long instrument.
*/
LongBuffer lb;
/**
* Constructor to create a LongMonitor object for the long instrument
* represented by the data in the given buffer.
*
* @param name the name of the long instrument
* @param u the units of measure attribute
* @param v the variability attribute
* @param supported support level indicator
* @param lb the buffer containing the long instrument data.
*/
public PerfLongMonitor(String name, Units u, Variability v,
boolean supported, LongBuffer lb) {
super(name, u, v, supported);
this.lb = lb;
}
/**
* {@inheritDoc}
* The object returned contains a Long object containing the
* current value of the LongInstrument.
*
* @return Object - the current value of the the LongInstrument. The
* return type is guaranteed to be of type Long.
*/
public Object getValue() {
return new Long(lb.get(0));
}
/**
* Return the current value of the LongInstrument as an long.
*
* @return long - the current value of the LongInstrument
*/
public long longValue() {
return lb.get(0);
}
}