2390N/A/*
3261N/A * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
2390N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
2390N/A *
2390N/A * This code is free software; you can redistribute it and/or modify it
2390N/A * under the terms of the GNU General Public License version 2 only, as
2685N/A * published by the Free Software Foundation. Oracle designates this
2390N/A * particular file as subject to the "Classpath" exception as provided
2685N/A * by Oracle in the LICENSE file that accompanied this code.
2390N/A *
2390N/A * This code is distributed in the hope that it will be useful, but WITHOUT
2390N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
2390N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
2390N/A * version 2 for more details (a copy is included in the LICENSE file that
2390N/A * accompanied this code).
2390N/A *
2390N/A * You should have received a copy of the GNU General Public License version
2390N/A * 2 along with this work; if not, write to the Free Software Foundation,
2390N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
2390N/A *
2685N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2685N/A * or visit www.oracle.com if you need additional information or have any
2685N/A * questions.
2390N/A */
2390N/A
2390N/Apackage sun.jvmstat.monitor;
2390N/A
2390N/A/**
2390N/A * Provides a typesafe enumeration for describing units of measurement
2390N/A * attribute for instrumentation objects.
2390N/A *
2390N/A * @author Brian Doherty
2390N/A */
2390N/Apublic class Units implements java.io.Serializable {
2390N/A
2390N/A /* The enumeration values for this typesafe enumeration must be
2390N/A * kept in synchronization with the Units enum in the perfData.hpp file
2390N/A * in the HotSpot source base.
2390N/A */
2390N/A
2390N/A private static final int NUNITS=8;
2390N/A
2390N/A private static Units[] map = new Units[NUNITS];
2390N/A
2390N/A private final String name;
2390N/A private final int value;
2390N/A
2390N/A /**
2390N/A * An Invalid Units value.
2390N/A */
2390N/A public static final Units INVALID = new Units("Invalid", 0);
2390N/A
2390N/A /**
2390N/A * Units attribute representing unit-less quantities.
2390N/A */
2390N/A public static final Units NONE = new Units("None", 1);
2390N/A
2390N/A /**
2390N/A * Units attribute representing Bytes.
2390N/A */
2390N/A public static final Units BYTES = new Units("Bytes", 2);
2390N/A
2390N/A /**
2390N/A * Units attribute representing Ticks.
2390N/A */
2390N/A public static final Units TICKS = new Units("Ticks", 3);
2390N/A
2390N/A /**
2390N/A * Units attribute representing a count of events.
2390N/A */
2390N/A public static final Units EVENTS = new Units("Events", 4);
2390N/A
2390N/A /**
2390N/A * Units attribute representing String data. Although not really
2390N/A * a unit of measure, this Units value serves to distinguish String
2390N/A * instrumentation objects from instrumentation objects of other types.
2390N/A */
2390N/A public static final Units STRING = new Units("String", 5);
2390N/A
2390N/A /**
2390N/A * Units attribute representing Hertz (frequency).
2390N/A */
2390N/A public static final Units HERTZ = new Units("Hertz", 6);
2390N/A
2390N/A /**
2390N/A * Returns a string describing this Unit of measurement attribute
2390N/A *
2390N/A * @return String - a descriptive string for this enum.
2390N/A */
2390N/A public String toString() {
2390N/A return name;
2390N/A }
2390N/A
2390N/A /**
2390N/A * Returns the integer representation of this Units attribute
2390N/A *
2390N/A * @return int - an integer representation of this Units attribute.
2390N/A */
2390N/A public int intValue() {
2390N/A return value;
2390N/A }
2390N/A
2390N/A /**
2390N/A * Maps an integer value to its corresponding Units attribute.
2390N/A * If the integer value does not have a corresponding Units enum
2390N/A * value, then {@link Units#INVALID} is returned.
2390N/A *
2390N/A * @param value an integer representation of counter Units
2390N/A * @return Units - the Units object for the given <code>value</code>
2390N/A * or {@link Units#INVALID} if out of range.
2390N/A */
2390N/A public static Units toUnits(int value) {
2390N/A
2390N/A if (value < 0 || value >= map.length || map[value] == null) {
2390N/A return INVALID;
2390N/A }
2390N/A
2390N/A return map[value];
2390N/A }
2390N/A
2390N/A private Units(String name, int value) {
2390N/A this.name = name;
2390N/A this.value = value;
2390N/A map[value] = this;
2390N/A }
2390N/A
2390N/A private static final long serialVersionUID = 6992337162326171013L;
2390N/A}