97 lines
3.1 KiB
Java
97 lines
3.1 KiB
Java
/*
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* This file is part of BlueMap, licensed under the MIT License (MIT).
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*
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* Copyright (c) Blue (Lukas Rieger) <https://bluecolored.de>
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* Copyright (c) contributors
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package de.bluecolored.bluemap.common.rendermanager;
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import java.util.Deque;
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import java.util.LinkedList;
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import java.util.Timer;
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import java.util.TimerTask;
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import java.util.concurrent.atomic.AtomicInteger;
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import java.util.function.Supplier;
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import java.util.stream.Collectors;
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public class ProgressTracker {
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private static final AtomicInteger ID = new AtomicInteger(0);
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private final Timer timer;
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private Supplier<Double> progressSupplier;
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private final int averagingCount;
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private long lastTime;
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private double lastProgress;
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private final Deque<Long> timesPerProgress;
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public ProgressTracker(long updateIntervall, int averagingCount) {
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this.timer = new Timer("BlueMap-ProgressTracker-Timer-" + ID.getAndIncrement(), true);
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this.progressSupplier = () -> 0d;
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this.averagingCount = averagingCount;
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this.timesPerProgress = new LinkedList<>();
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this.timer.scheduleAtFixedRate(new TimerTask() {
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@Override
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public void run() {
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update();
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}
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}, updateIntervall, updateIntervall);
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}
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public synchronized void resetAndStart(Supplier<Double> progressSupplier) {
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this.progressSupplier = progressSupplier;
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this.lastTime = System.currentTimeMillis();
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this.lastProgress = progressSupplier.get();
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this.timesPerProgress.clear();
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}
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public synchronized long getAverageTimePerProgress() {
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return timesPerProgress.stream()
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.collect(Collectors.averagingLong(Long::longValue))
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.longValue();
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}
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private synchronized void update() {
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long now = System.currentTimeMillis();
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double progress = progressSupplier.get();
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long deltaTime = now - lastTime;
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double deltaProgress = progress - lastProgress;
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if (deltaProgress != 0) {
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long totalDuration = (long) (deltaTime / deltaProgress);
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timesPerProgress.addLast(totalDuration);
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while (timesPerProgress.size() > averagingCount) timesPerProgress.removeFirst();
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this.lastTime = now;
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this.lastProgress = progress;
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}
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}
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public void cancel() {
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timer.cancel();
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}
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}
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