328 lines
12 KiB
Java
328 lines
12 KiB
Java
package net.minecraft.server.level;
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import com.mojang.logging.LogUtils;
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import it.unimi.dsi.fastutil.longs.Long2ByteMap;
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import it.unimi.dsi.fastutil.longs.Long2ByteMaps;
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import it.unimi.dsi.fastutil.longs.Long2ByteOpenHashMap;
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import it.unimi.dsi.fastutil.longs.Long2IntMap;
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import it.unimi.dsi.fastutil.longs.Long2IntMaps;
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import it.unimi.dsi.fastutil.longs.Long2IntOpenHashMap;
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import it.unimi.dsi.fastutil.longs.Long2ObjectFunction;
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import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
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import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
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import it.unimi.dsi.fastutil.longs.LongConsumer;
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import it.unimi.dsi.fastutil.longs.LongIterator;
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import it.unimi.dsi.fastutil.longs.LongOpenHashSet;
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import it.unimi.dsi.fastutil.longs.LongSet;
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import it.unimi.dsi.fastutil.longs.Long2ByteMap.Entry;
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import it.unimi.dsi.fastutil.objects.ObjectOpenHashSet;
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import it.unimi.dsi.fastutil.objects.ObjectSet;
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import it.unimi.dsi.fastutil.objects.ReferenceOpenHashSet;
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import java.util.Set;
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import java.util.concurrent.CompletableFuture;
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import java.util.concurrent.Executor;
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import net.minecraft.core.SectionPos;
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import net.minecraft.util.TriState;
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import net.minecraft.util.thread.TaskScheduler;
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import net.minecraft.world.level.ChunkPos;
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import net.minecraft.world.level.NaturalSpawner;
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import net.minecraft.world.level.TicketStorage;
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import net.minecraft.world.level.chunk.LevelChunk;
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import org.jetbrains.annotations.Nullable;
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import org.slf4j.Logger;
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public abstract class DistanceManager {
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private static final Logger LOGGER = LogUtils.getLogger();
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static final int PLAYER_TICKET_LEVEL = ChunkLevel.byStatus(FullChunkStatus.ENTITY_TICKING);
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final Long2ObjectMap<ObjectSet<ServerPlayer>> playersPerChunk = new Long2ObjectOpenHashMap<>();
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private final LoadingChunkTracker loadingChunkTracker;
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private final SimulationChunkTracker simulationChunkTracker;
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final TicketStorage ticketStorage;
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private final DistanceManager.FixedPlayerDistanceChunkTracker naturalSpawnChunkCounter = new DistanceManager.FixedPlayerDistanceChunkTracker(8);
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private final DistanceManager.PlayerTicketTracker playerTicketManager = new DistanceManager.PlayerTicketTracker(32);
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protected final Set<ChunkHolder> chunksToUpdateFutures = new ReferenceOpenHashSet<>();
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final ThrottlingChunkTaskDispatcher ticketDispatcher;
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final LongSet ticketsToRelease = new LongOpenHashSet();
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final Executor mainThreadExecutor;
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private int simulationDistance = 10;
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protected DistanceManager(TicketStorage ticketStorage, Executor dispatcher, Executor mainThreadExecutor) {
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this.ticketStorage = ticketStorage;
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this.loadingChunkTracker = new LoadingChunkTracker(this, ticketStorage);
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this.simulationChunkTracker = new SimulationChunkTracker(ticketStorage);
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TaskScheduler<Runnable> taskScheduler = TaskScheduler.wrapExecutor("player ticket throttler", mainThreadExecutor);
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this.ticketDispatcher = new ThrottlingChunkTaskDispatcher(taskScheduler, dispatcher, 4);
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this.mainThreadExecutor = mainThreadExecutor;
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}
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protected abstract boolean isChunkToRemove(long chunkPos);
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@Nullable
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protected abstract ChunkHolder getChunk(long chunkPos);
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@Nullable
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protected abstract ChunkHolder updateChunkScheduling(long chunkPos, int newLevel, @Nullable ChunkHolder holder, int oldLevel);
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public boolean runAllUpdates(ChunkMap chunkMap) {
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this.naturalSpawnChunkCounter.runAllUpdates();
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this.simulationChunkTracker.runAllUpdates();
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this.playerTicketManager.runAllUpdates();
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int i = Integer.MAX_VALUE - this.loadingChunkTracker.runDistanceUpdates(Integer.MAX_VALUE);
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boolean bl = i != 0;
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if (bl) {
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}
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if (!this.chunksToUpdateFutures.isEmpty()) {
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for (ChunkHolder chunkHolder : this.chunksToUpdateFutures) {
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chunkHolder.updateHighestAllowedStatus(chunkMap);
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}
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for (ChunkHolder chunkHolder : this.chunksToUpdateFutures) {
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chunkHolder.updateFutures(chunkMap, this.mainThreadExecutor);
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}
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this.chunksToUpdateFutures.clear();
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return true;
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} else {
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if (!this.ticketsToRelease.isEmpty()) {
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LongIterator longIterator = this.ticketsToRelease.iterator();
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while (longIterator.hasNext()) {
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long l = longIterator.nextLong();
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if (this.ticketStorage.getTickets(l).stream().anyMatch(ticket -> ticket.getType() == TicketType.PLAYER_LOADING)) {
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ChunkHolder chunkHolder2 = chunkMap.getUpdatingChunkIfPresent(l);
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if (chunkHolder2 == null) {
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throw new IllegalStateException();
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}
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CompletableFuture<ChunkResult<LevelChunk>> completableFuture = chunkHolder2.getEntityTickingChunkFuture();
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completableFuture.thenAccept(chunkResult -> this.mainThreadExecutor.execute(() -> this.ticketDispatcher.release(l, () -> {}, false)));
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}
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}
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this.ticketsToRelease.clear();
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}
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return bl;
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}
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}
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public void addPlayer(SectionPos sectionPos, ServerPlayer player) {
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ChunkPos chunkPos = sectionPos.chunk();
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long l = chunkPos.toLong();
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this.playersPerChunk.computeIfAbsent(l, (Long2ObjectFunction<? extends ObjectSet<ServerPlayer>>)(lx -> new ObjectOpenHashSet<>())).add(player);
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this.naturalSpawnChunkCounter.update(l, 0, true);
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this.playerTicketManager.update(l, 0, true);
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this.ticketStorage.addTicket(new Ticket(TicketType.PLAYER_SIMULATION, this.getPlayerTicketLevel()), chunkPos);
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}
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public void removePlayer(SectionPos sectionPos, ServerPlayer player) {
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ChunkPos chunkPos = sectionPos.chunk();
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long l = chunkPos.toLong();
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ObjectSet<ServerPlayer> objectSet = this.playersPerChunk.get(l);
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objectSet.remove(player);
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if (objectSet.isEmpty()) {
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this.playersPerChunk.remove(l);
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this.naturalSpawnChunkCounter.update(l, Integer.MAX_VALUE, false);
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this.playerTicketManager.update(l, Integer.MAX_VALUE, false);
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this.ticketStorage.removeTicket(new Ticket(TicketType.PLAYER_SIMULATION, this.getPlayerTicketLevel()), chunkPos);
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}
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}
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private int getPlayerTicketLevel() {
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return Math.max(0, ChunkLevel.byStatus(FullChunkStatus.ENTITY_TICKING) - this.simulationDistance);
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}
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public boolean inEntityTickingRange(long chunkPos) {
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return ChunkLevel.isEntityTicking(this.simulationChunkTracker.getLevel(chunkPos));
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}
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public boolean inBlockTickingRange(long chunkPos) {
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return ChunkLevel.isBlockTicking(this.simulationChunkTracker.getLevel(chunkPos));
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}
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public int getChunkLevel(long chunkPos, boolean simulate) {
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return simulate ? this.simulationChunkTracker.getLevel(chunkPos) : this.loadingChunkTracker.getLevel(chunkPos);
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}
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protected void updatePlayerTickets(int viewDistance) {
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this.playerTicketManager.updateViewDistance(viewDistance);
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}
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public void updateSimulationDistance(int simulationDistance) {
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if (simulationDistance != this.simulationDistance) {
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this.simulationDistance = simulationDistance;
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this.ticketStorage.replaceTicketLevelOfType(this.getPlayerTicketLevel(), TicketType.PLAYER_SIMULATION);
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}
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}
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/**
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* Returns the number of chunks taken into account when calculating the mob cap
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*/
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public int getNaturalSpawnChunkCount() {
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this.naturalSpawnChunkCounter.runAllUpdates();
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return this.naturalSpawnChunkCounter.chunks.size();
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}
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public TriState hasPlayersNearby(long chunkPos) {
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this.naturalSpawnChunkCounter.runAllUpdates();
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int i = this.naturalSpawnChunkCounter.getLevel(chunkPos);
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if (i <= NaturalSpawner.INSCRIBED_SQUARE_SPAWN_DISTANCE_CHUNK) {
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return TriState.TRUE;
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} else {
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return i > 8 ? TriState.FALSE : TriState.DEFAULT;
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}
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}
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public void forEachEntityTickingChunk(LongConsumer action) {
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for (Entry entry : Long2ByteMaps.fastIterable(this.simulationChunkTracker.chunks)) {
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byte b = entry.getByteValue();
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long l = entry.getLongKey();
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if (ChunkLevel.isEntityTicking(b)) {
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action.accept(l);
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}
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}
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}
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public LongIterator getSpawnCandidateChunks() {
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this.naturalSpawnChunkCounter.runAllUpdates();
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return this.naturalSpawnChunkCounter.chunks.keySet().iterator();
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}
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public String getDebugStatus() {
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return this.ticketDispatcher.getDebugStatus();
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}
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public boolean hasTickets() {
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return this.ticketStorage.hasTickets();
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}
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class FixedPlayerDistanceChunkTracker extends ChunkTracker {
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/**
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* Chunks that are at most {@link #range} chunks away from the closest player.
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*/
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protected final Long2ByteMap chunks = new Long2ByteOpenHashMap();
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protected final int maxDistance;
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protected FixedPlayerDistanceChunkTracker(final int maxDistance) {
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super(maxDistance + 2, 16, 256);
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this.maxDistance = maxDistance;
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this.chunks.defaultReturnValue((byte)(maxDistance + 2));
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}
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@Override
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protected int getLevel(long chunkPos) {
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return this.chunks.get(chunkPos);
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}
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@Override
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protected void setLevel(long chunkPos, int level) {
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byte b;
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if (level > this.maxDistance) {
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b = this.chunks.remove(chunkPos);
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} else {
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b = this.chunks.put(chunkPos, (byte)level);
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}
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this.onLevelChange(chunkPos, b, level);
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}
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/**
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* Called after {@link PlayerChunkTracker#setLevel(long, int)} puts/removes chunk into/from {@link #chunksInRange}.
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*
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* @param oldLevel Previous level of the chunk if it was smaller than {@link #range}, {@code range + 2} otherwise.
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*/
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protected void onLevelChange(long chunkPos, int oldLevel, int newLevel) {
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}
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@Override
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protected int getLevelFromSource(long pos) {
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return this.havePlayer(pos) ? 0 : Integer.MAX_VALUE;
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}
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private boolean havePlayer(long chunkPos) {
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ObjectSet<ServerPlayer> objectSet = DistanceManager.this.playersPerChunk.get(chunkPos);
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return objectSet != null && !objectSet.isEmpty();
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}
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public void runAllUpdates() {
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this.runUpdates(Integer.MAX_VALUE);
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}
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}
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class PlayerTicketTracker extends DistanceManager.FixedPlayerDistanceChunkTracker {
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private int viewDistance;
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private final Long2IntMap queueLevels = Long2IntMaps.synchronize(new Long2IntOpenHashMap());
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private final LongSet toUpdate = new LongOpenHashSet();
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protected PlayerTicketTracker(final int maxDistance) {
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super(maxDistance);
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this.viewDistance = 0;
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this.queueLevels.defaultReturnValue(maxDistance + 2);
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}
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@Override
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protected void onLevelChange(long chunkPos, int oldLevel, int newLevel) {
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this.toUpdate.add(chunkPos);
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}
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public void updateViewDistance(int viewDistance) {
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for (Entry entry : this.chunks.long2ByteEntrySet()) {
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byte b = entry.getByteValue();
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long l = entry.getLongKey();
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this.onLevelChange(l, b, this.haveTicketFor(b), b <= viewDistance);
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}
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this.viewDistance = viewDistance;
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}
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private void onLevelChange(long chunkPos, int level, boolean hadTicket, boolean hasTicket) {
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if (hadTicket != hasTicket) {
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Ticket ticket = new Ticket(TicketType.PLAYER_LOADING, DistanceManager.PLAYER_TICKET_LEVEL);
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if (hasTicket) {
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DistanceManager.this.ticketDispatcher.submit(() -> DistanceManager.this.mainThreadExecutor.execute(() -> {
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if (this.haveTicketFor(this.getLevel(chunkPos))) {
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DistanceManager.this.ticketStorage.addTicket(chunkPos, ticket);
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DistanceManager.this.ticketsToRelease.add(chunkPos);
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} else {
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DistanceManager.this.ticketDispatcher.release(chunkPos, () -> {}, false);
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}
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}), chunkPos, () -> level);
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} else {
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DistanceManager.this.ticketDispatcher
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.release(chunkPos, () -> DistanceManager.this.mainThreadExecutor.execute(() -> DistanceManager.this.ticketStorage.removeTicket(chunkPos, ticket)), true);
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}
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}
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}
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@Override
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public void runAllUpdates() {
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super.runAllUpdates();
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if (!this.toUpdate.isEmpty()) {
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LongIterator longIterator = this.toUpdate.iterator();
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while (longIterator.hasNext()) {
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long l = longIterator.nextLong();
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int i = this.queueLevels.get(l);
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int j = this.getLevel(l);
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if (i != j) {
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DistanceManager.this.ticketDispatcher.onLevelChange(new ChunkPos(l), () -> this.queueLevels.get(l), j, ix -> {
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if (ix >= this.queueLevels.defaultReturnValue()) {
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this.queueLevels.remove(l);
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} else {
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this.queueLevels.put(l, ix);
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}
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});
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this.onLevelChange(l, j, this.haveTicketFor(i), this.haveTicketFor(j));
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}
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}
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this.toUpdate.clear();
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}
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}
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private boolean haveTicketFor(int level) {
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return level <= this.viewDistance;
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}
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}
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}
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