| J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 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.jvmstat.perfdata.monitor; |
| 27 | |
| 28 | import sun.jvmstat.monitor.*; |
| 29 | import sun.management.counter.Units; |
| 30 | import sun.management.counter.Variability; |
| 31 | import java.nio.LongBuffer; |
| 32 | |
| 33 | /** |
| 34 | * Class for monitoring a PerfData Long instrument. |
| 35 | * |
| 36 | * @author Brian Doherty |
| 37 | * @since 1.5 |
| 38 | */ |
| 39 | public class PerfLongMonitor extends AbstractMonitor implements LongMonitor { |
| 40 | |
| 41 | /** |
| 42 | * The buffer containing the data for the long instrument. |
| 43 | */ |
| 44 | LongBuffer lb; |
| 45 | |
| 46 | /** |
| 47 | * Constructor to create a LongMonitor object for the long instrument |
| 48 | * represented by the data in the given buffer. |
| 49 | * |
| 50 | * @param name the name of the long instrument |
| 51 | * @param u the units of measure attribute |
| 52 | * @param v the variability attribute |
| 53 | * @param supported support level indicator |
| 54 | * @param lb the buffer containing the long instrument data. |
| 55 | */ |
| 56 | public PerfLongMonitor(String name, Units u, Variability v, |
| 57 | boolean supported, LongBuffer lb) { |
| 58 | super(name, u, v, supported); |
| 59 | this.lb = lb; |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * {@inheritDoc} |
| 64 | * The object returned contains a Long object containing the |
| 65 | * current value of the LongInstrument. |
| 66 | * |
| 67 | * @return Object - the current value of the the LongInstrument. The |
| 68 | * return type is guaranteed to be of type Long. |
| 69 | */ |
| 70 | public Object getValue() { |
| 71 | return new Long(lb.get(0)); |
| 72 | } |
| 73 | |
| 74 | /** |
| 75 | * Return the current value of the LongInstrument as an long. |
| 76 | * |
| 77 | * @return long - the current value of the LongInstrument |
| 78 | */ |
| 79 | public long longValue() { |
| 80 | return lb.get(0); |
| 81 | } |
| 82 | } |