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| 1 | /* | ||
| 2 | * Copyright (c) 2004, 2010, Oracle and/or its affiliates. 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. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package sun.jvmstat.perfdata.monitor; | ||
| 27 | |||
| 28 | import sun.jvmstat.monitor.*; | ||
| 29 | import java.nio.LongBuffer; | ||
| 30 | |||
| 31 | /** | ||
| 32 | * Class for monitoring a PerfData Long instrument. | ||
| 33 | * | ||
| 34 | * @author Brian Doherty | ||
| 35 | * @since 1.5 | ||
| 36 | */ | ||
| 37 | public class PerfLongMonitor extends AbstractMonitor implements LongMonitor { | ||
| 38 | |||
| 39 | /** | ||
| 40 | * The buffer containing the data for the long instrument. | ||
| 41 | */ | ||
| 42 | LongBuffer lb; | ||
| 43 | |||
| 44 | /** | ||
| 45 | * Constructor to create a LongMonitor object for the long instrument | ||
| 46 | * represented by the data in the given buffer. | ||
| 47 | * | ||
| 48 | * @param name the name of the long instrument | ||
| 49 | * @param u the units of measure attribute | ||
| 50 | * @param v the variability attribute | ||
| 51 | * @param supported support level indicator | ||
| 52 | * @param lb the buffer containing the long instrument data. | ||
| 53 | */ | ||
| 54 | public PerfLongMonitor(String name, Units u, Variability v, | ||
| 55 | boolean supported, LongBuffer lb) { | ||
| 56 | super(name, u, v, supported); | ||
| 57 | this.lb = lb; | ||
| 58 | } | ||
| 59 | |||
| 60 | /** | ||
| 61 | * {@inheritDoc} | ||
| 62 | * The object returned contains a Long object containing the | ||
| 63 | * current value of the LongInstrument. | ||
| 64 | * | ||
| 65 | * @return Object - the current value of the the LongInstrument. The | ||
| 66 | * return type is guaranteed to be of type Long. | ||
| 67 | */ | ||
| 68 | public Object getValue() { | ||
| 69 | return new Long(lb.get(0)); | ||
| 70 | } | ||
| 71 | |||
| 72 | /** | ||
| 73 | * Return the current value of the LongInstrument as an long. | ||
| 74 | * | ||
| 75 | * @return long - the current value of the LongInstrument | ||
| 76 | */ | ||
| 77 | public long longValue() { | ||
| 78 | return lb.get(0); | ||
| 79 | } | ||
| 80 | } | ||