/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE
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* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Copyright 2008 Sun Microsystems, Inc.
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*/
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package org.opends.server.monitors;
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/**
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* This class implements a monitor a basic counter.
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*/
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public class CounterMonitor {
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// private counter
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private int count=0;
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// max counter
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private int max=0;
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// private constructor
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private CounterMonitor() {
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}
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// private constructor
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private CounterMonitor(CounterMonitor countMonitor) {
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this.count=countMonitor.getCount();
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this.max=countMonitor.getMax();
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}
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/**
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* Gets a CounterMonitor Object.
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* @return a counter monitor object.
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*/
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public static CounterMonitor getCounter() {
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return new CounterMonitor();
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}
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/**
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* Gets a copy of the counter monitor.
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* @return a duplicate object.
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*/
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public CounterMonitor duplicate() {
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return new CounterMonitor(this);
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}
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/**
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* Adds a counter Monitor to the current counter object.
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* @param countMonitor to add.
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*/
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public void add(CounterMonitor countMonitor) {
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this.count+=countMonitor.count;
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if ((this.count>this.max) && (this.count>=countMonitor.max)) {
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this.max=this.count;
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}
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else {
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if (this.max<countMonitor.getMax()) {
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this.max=countMonitor.getMax();
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}
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}
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}
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/**
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* Increments the counter object.
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*/
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public void increment() {
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count++;
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if (count>max) max=count;
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}
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/**
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* Decrements the counter object.
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*/
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public void decrement() {
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count--;
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}
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/**
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* Gets the current counter value.
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* @return the current counter value.
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*/
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public int getCount() {
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return count;
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}
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/**
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* Gets the maximum value the counter reached since the object creation.
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* @return the maximum value.
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*/
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public int getMax() {
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return max;
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}
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/**
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* Reset the counter values (Value and max).
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*/
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public void reset() {
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this.count=0;
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this.max=0;
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}
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}
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