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// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
/* +=======================================================================
* |
* | PlantUML : a free UML diagram generator
* |
* +=======================================================================
*
* (C) Copyright 2009-2024, Arnaud Roques
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* Project Info: https://plantuml.com
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* Licensed under the Apache License, Version 2.0 (the "License");
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* http://www.apache.org/licenses/LICENSE-2.0
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*/
package net.sourceforge.plantuml.api;
import java.util.StringTokenizer;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import java.util.prefs.Preferences;
import net.sourceforge.plantuml.log.Logme;
import net.sourceforge.plantuml.utils.Log;
public class NumberAnalyzed implements INumberAnalyzed {
private static final int SLIDING_WINDOW = 1024;
private long nb;
private long sum;
private long min;
private long max;
private long sumOfSquare;
// See https://fossies.org/linux/haproxy/include/proto/freq_ctr.h
private long sliddingSum;
private final String name;
private final Lock saveLock = new ReentrantLock();
public NumberAnalyzed(String name) {
this.name = name;
}
public synchronized void reset() {
this.nb = 0;
this.sum = 0;
this.min = 0;
this.max = 0;
this.sumOfSquare = 0;
this.sliddingSum = 0;
}
public NumberAnalyzed() {
this("");
}
public final void save(Preferences prefs) {
if (name.length() == 0) {
throw new UnsupportedOperationException();
}
if (saveLock.tryLock())
try {
prefs.put(name + ".saved", getSavedString());
} finally {
saveLock.unlock();
}
}
private String getSavedString() {
final long nb1;
final long sum1;
final long min1;
final long max1;
final long sumOfSquare1;
final long sliddingSum1;
final String supp1;
synchronized (this) {
nb1 = nb;
sum1 = sum;
min1 = min;
max1 = max;
sumOfSquare1 = sumOfSquare;
sliddingSum1 = sliddingSum;
}
supp1 = getSavedSupplementatyData();
return longToString(nb1) + ";" + longToString(sum1) + ";" + longToString(min1) + ";" + longToString(max1) + ";"
+ longToString(sumOfSquare1) + ";" + longToString(sliddingSum1) + ";" + supp1 + ";";
}
protected String getSavedSupplementatyData() {
return "";
}
protected final String longToString(long val) {
return Long.toString(val, 36);
}
public static NumberAnalyzed load(String name, Preferences prefs) {
final String value = prefs.get(name + ".saved", "");
if (value.length() == 0) {
Log.info("Cannot load " + name);
return null;
}
try {
final StringTokenizer st = new StringTokenizer(value, ";");
return new NumberAnalyzed(name, Long.parseLong(st.nextToken(), 36), Long.parseLong(st.nextToken(), 36),
Long.parseLong(st.nextToken(), 36), Long.parseLong(st.nextToken(), 36),
Long.parseLong(st.nextToken(), 36), Long.parseLong(st.nextToken(), 36));
} catch (Exception e) {
Logme.error(e);
Log.info("Error reading " + value);
return null;
}
}
@Override
public synchronized String toString() {
return "sum=" + sum + " nb=" + nb + " min=" + min + " max=" + max + " mean=" + getMean();
}
protected NumberAnalyzed(String name, long nb, long sum, long min, long max, long sumOfSquare, long sliddingSum) {
this(name);
this.nb = nb;
this.sum = sum;
this.min = min;
this.max = max;
this.sumOfSquare = sumOfSquare;
this.sliddingSum = sliddingSum;
}
public synchronized INumberAnalyzed getCopyImmutable() {
final NumberAnalyzed copy = new NumberAnalyzed(name, nb, sum, min, max, sumOfSquare, sliddingSum);
return copy;
}
public synchronized void addValue(long v) {
nb++;
if (nb == 1) {
min = v;
max = v;
} else if (v > max) {
max = v;
} else if (v < min) {
min = v;
}
sum += v;
sumOfSquare += v * v;
sliddingSum = sliddingSum * (SLIDING_WINDOW - 1) / SLIDING_WINDOW + v;
}
public void add(NumberAnalyzed other) {
final long nb1;
final long sum1;
final long min1;
final long max1;
final long sumOfSquare1;
final long sliddingSum1;
synchronized (other) {
nb1 = other.nb;
sum1 = other.sum;
min1 = other.min;
max1 = other.max;
sumOfSquare1 = other.sumOfSquare;
sliddingSum1 = other.sliddingSum;
}
synchronized (this) {
this.sum += sum1;
this.nb += nb1;
this.min = Math.min(this.min, min1);
this.max = Math.max(this.max, max1);
this.sumOfSquare += sumOfSquare1;
// Not good!
this.sliddingSum += sliddingSum1;
}
}
synchronized public final long getNb() {
return nb;
}
synchronized public final long getSum() {
return sum;
}
synchronized public final long getMin() {
return min;
}
synchronized public final long getMax() {
return max;
}
synchronized public final long getMean() {
if (nb == 0) {
return 0;
}
return sum / nb;
}
synchronized public final long getSliddingMean() {
if (nb == 0) {
return 0;
}
if (nb < SLIDING_WINDOW) {
return sum / nb;
}
return sliddingSum / nb;
}
public final long getStandardDeviation() {
final long sum1;
final long sumOfSquare1;
final long nb1;
synchronized (this) {
sum1 = this.sum;
sumOfSquare1 = this.sumOfSquare;
nb1 = this.nb;
}
if (nb1 == 0) {
return 0;
}
final long mean = sum1 / nb1;
return Math.round(Math.sqrt(sumOfSquare1 / nb1 - mean * mean));
}
final public String getName() {
return name;
}
}