org.diorite.impl.world.tick.TickGroups.java Source code

Introduction

Here is the source code for org.diorite.impl.world.tick.TickGroups.java

Source

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2016. Diorite (by Bartomiej Mazur (aka GotoFinal))
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package org.diorite.impl.world.tick;

import java.util.Collection;
import java.util.Iterator;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ForkJoinPool;
import java.util.concurrent.ForkJoinWorkerThread;
import java.util.concurrent.atomic.AtomicInteger;

import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;

import org.diorite.impl.CoreMain;
import org.diorite.impl.DioriteCore;
import org.diorite.impl.Tickable;
import org.diorite.utils.SpammyError;
import org.diorite.utils.collections.sets.ConcurrentSet;

public class TickGroups implements Tickable {
    private static final Object key = new Object(); // key to spammy messages

    protected final DioriteCore core;
    private Collection<TickGroupImpl> groups = new ConcurrentSet<>(10);

    public TickGroups(final DioriteCore core) {
        this.core = core;
    }

    public Collection<TickGroupImpl> getGroups() {
        return this.groups;
    }

    public void setGroups(final Collection<TickGroupImpl> groups) {
        this.groups = groups;
    }

    @Override
    public synchronized void doTick(final int tps) {
        if (this.groups.isEmpty()) {
            if (!CoreMain.isClient()) {
                SpammyError.err(
                        "There is no tick groups, server don't have anything to do. Do you have any worlds?", 10,
                        key);
            }
            return;
        }
        if (this.groups.size() == 1) {
            /**
             * TODO count time of execution and split if needed.
             */
            try {
                this.groups.iterator().next().doTick(tps);
            } catch (final Throwable throwable) {
                throwable.printStackTrace();
            }
            return;
        }
        final AtomicInteger i = new AtomicInteger(0);
        final ForkJoinPool pool = new ForkJoinPool(this.groups.size(),
                p -> new NamedForkJoinWorkerThread(p, i.getAndIncrement()), (t, e) -> {
                    // TODO: maybe add some pretty error priting
                    System.err.println("Error in tick thread: " + t.getName());
                    e.printStackTrace();
                }, false);

        /**
         * TODO count time of execution for all groups.
         * if any group is creating lags, try split it. (should not count single-time lags?)
         * if two grups can be join, try join them.
         */
        final CountDownLatch latch = new CountDownLatch(this.groups.size());
        for (final Iterator<TickGroupImpl> it = this.groups.iterator(); it.hasNext();) {
            final TickGroupImpl tickGroup = it.next();
            if (tickGroup.isEmpty()) {
                it.remove();
                latch.countDown();
                continue;
            }
            pool.submit(() -> {
                try {
                    tickGroup.doTick(tps);
                    this.core.runScheduler(false);
                    this.core.runSync();
                } finally {
                    latch.countDown();
                }
            });
        }
        try {
            latch.await();
        } catch (final InterruptedException e) {
            e.printStackTrace();
        }
    }

    @Override
    public String toString() {
        return new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE).appendSuper(super.toString())
                .append("groups", this.groups).toString();
    }

    private static class NamedForkJoinWorkerThread extends ForkJoinWorkerThread {
        private NamedForkJoinWorkerThread(final ForkJoinPool p, final int i) {
            super(p);
            this.setName("[WorldTick@" + i + "]");
        }
    }
}