Showing the changes to java/pkg/sun/jvmstat/monitor/Variability.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 2003, 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.monitor; | |
| 27 | + | |
| 28 | +/** | |
| 29 | + * Provides a typesafe enumeration for the Variability attribute for | |
| 30 | + * instrumentation objects. | |
| 31 | + * | |
| 32 | + * @author Brian Doherty | |
| 33 | + */ | |
| 34 | +public class Variability implements java.io.Serializable { | |
| 35 | + | |
| 36 | + /* The enumeration values for this typesafe enumeration must be | |
| 37 | + * kept in synchronization with the Variability enum in the perfData.hpp file | |
| 38 | + * in the HotSpot source base. | |
| 39 | + */ | |
| 40 | + | |
| 41 | + private static final int NATTRIBUTES = 4; | |
| 42 | + private static Variability[] map = new Variability[NATTRIBUTES]; | |
| 43 | + | |
| 44 | + private String name; | |
| 45 | + private int value; | |
| 46 | + | |
| 47 | + /** | |
| 48 | + * An invalid Variablity value. | |
| 49 | + */ | |
| 50 | + public static final Variability INVALID = new Variability("Invalid",0); | |
| 51 | + | |
| 52 | + /** | |
| 53 | + * Variability attribute representing Constant counters. | |
| 54 | + */ | |
| 55 | + public static final Variability CONSTANT = new Variability("Constant",1); | |
| 56 | + | |
| 57 | + /** | |
| 58 | + * Variability attribute representing a Monotonically changing counters. | |
| 59 | + */ | |
| 60 | + public static final Variability MONOTONIC = new Variability("Monotonic",2); | |
| 61 | + | |
| 62 | + /** | |
| 63 | + * Variability attribute representing Variable counters. | |
| 64 | + */ | |
| 65 | + public static final Variability VARIABLE = new Variability("Variable",3); | |
| 66 | + | |
| 67 | + /** | |
| 68 | + * Returns a string describing this Variability attribute. | |
| 69 | + * | |
| 70 | + * @return String - a descriptive string for this enum. | |
| 71 | + */ | |
| 72 | + public String toString() { | |
| 73 | + return name; | |
| 74 | + } | |
| 75 | + | |
| 76 | + /** | |
| 77 | + * Returns the integer representation of this Variability attribute. | |
| 78 | + * | |
| 79 | + * @return int - an integer representation of this Variability attribute. | |
| 80 | + */ | |
| 81 | + public int intValue() { | |
| 82 | + return value; | |
| 83 | + } | |
| 84 | + | |
| 85 | + /** | |
| 86 | + * Maps an integer value its corresponding Variability attribute. | |
| 87 | + * If the integer value does not have a corresponding Variability enum | |
| 88 | + * value, the {@link Variability#INVALID} is returned | |
| 89 | + * | |
| 90 | + * @param value an integer representation of a Variability attribute | |
| 91 | + * @return Variability - The Variability object for the given | |
| 92 | + * <code>value</code> or {@link Variability#INVALID} | |
| 93 | + * if out of range. | |
| 94 | + */ | |
| 95 | + public static Variability toVariability(int value) { | |
| 96 | + | |
| 97 | + if (value < 0 || value >= map.length || map[value] == null) { | |
| 98 | + return INVALID; | |
| 99 | + } | |
| 100 | + | |
| 101 | + return map[value]; | |
| 102 | + } | |
| 103 | + | |
| 104 | + private Variability(String name, int value) { | |
| 105 | + this.name = name; | |
| 106 | + this.value = value; | |
| 107 | + map[value]=this; | |
| 108 | + } | |
| 109 | + | |
| 110 | + private static final long serialVersionUID = 6992337162326171013L; | |
| 111 | +} | |