98 lines
2.6 KiB
Java
98 lines
2.6 KiB
Java
/*
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* Minecraft Forge
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* Copyright (c) 2016-2020.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation version 2.1
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* of the License.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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package net.minecraftforge.common;
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import java.util.ArrayList;
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import java.util.List;
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public class WorldWorkerManager
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{
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private static List<IWorker> workers = new ArrayList<IWorker>();
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private static long startTime = -1;
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private static int index = 0;
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public static void tick(boolean start)
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{
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if (start)
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{
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startTime = System.currentTimeMillis();
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return;
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}
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index = 0;
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IWorker task = getNext();
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if (task == null)
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return;
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long time = 50 - (System.currentTimeMillis() - startTime);
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if (time < 10)
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time = 10; //If ticks are lagging, give us at least 10ms to do something.
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time += System.currentTimeMillis();
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while (System.currentTimeMillis() < time && task != null)
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{
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boolean again = task.doWork();
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if (!task.hasWork())
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{
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remove(task);
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task = getNext();
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}
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else if (!again)
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{
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task = getNext();
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}
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}
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}
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public static synchronized void addWorker(IWorker worker)
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{
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workers.add(worker);
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}
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private static synchronized IWorker getNext()
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{
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return workers.size() > index ? workers.get(index++) : null;
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}
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private static synchronized void remove(IWorker worker)
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{
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workers.remove(worker);
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index--;
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}
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//Internal only, used to clear everything when the server shuts down.
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public static synchronized void clear()
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{
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workers.clear();
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}
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public static interface IWorker
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{
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boolean hasWork();
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/**
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* Perform a task, returning true from this will have the manager call this function again this tick if there is time left.
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* Returning false will skip calling this worker until next tick.
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*/
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boolean doWork();
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}
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}
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