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Paper/patches/unapplied/server/0388-Optimise-TickListServer-by-rewriting-it.patch
Jason Penilla a8ef7aa56f Prepare for updating server patches
2021-11-30 19:26:33 +01:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Fri, 14 Feb 2020 01:24:39 -0800
Subject: [PATCH] Optimise TickListServer by rewriting it
In my profiling TickListServer showed up as
~10% for saving chunks and ~5% for the scheduling
of items on a server with ~90 players at
view distance = 5. Most of the performance
loss is unneccessary.
TickListServer has numerous performance issues:
1. Handling scheduled items is O(nlogn)
2. Getting scheduled items for a chunk is O(n),
with n being the the number of scheduled items
for all chunks (hits saving very hard)
3. Checking if an item is scheduled for the current tick is O(n),
with n being the number of items scheduled for current tick
4. Items not in ticking chunks are churned in the scheduler
The biggest issues are 4 & 2.
We solve 1 by splitting up scheduled items into short and long scheduled,
where we expect the vast majority of our entries to be in the short scheduled
set. Handling short scheduled items is O(n) due to how the comparison
process is reduced to mapping. See TickListServerInterval. However,
this isn't memory-efficient - which is why long scheduled exists.
Long scheduled is handled the same as TickListServer.
2 is solved by mapping what entries are in what chunks.
3 is solved by mapping what blocks have what scheduled for them.
4 is solved by moving the items that are not in ticking chunks
into a map of entries for that chunk. Once the chunk is moved
to ticking, the items are re-scheduled.
This patch has also added two flags to debug excessive tick delays:
-Dpaper.ticklist-warn-on-excessive-delay=true (false by default)
and -Dpaper.ticklist-excessive-delay-threshold=ticks which
sets the excessive tick delay to the specified ticks (defaults to
60 * 20 ticks, aka 60 seconds)
diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
index 26c5ae72f63d930bf6de2ec18a964ddfeca16379..e9954fa75412a7077950e3813af4b201c084f68f 100644
--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
@@ -375,6 +375,13 @@ public class PaperConfig {
maxBookTotalSizeMultiplier = getDouble("settings.book-size.total-multiplier", maxBookTotalSizeMultiplier);
}
+ public static boolean useOptimizedTickList = true;
+ private static void useOptimizedTickList() {
+ if (config.contains("settings.use-optimized-ticklist")) { // don't add default, hopefully temporary config
+ useOptimizedTickList = config.getBoolean("settings.use-optimized-ticklist");
+ }
+ }
+
public static boolean asyncChunks = false;
private static void asyncChunks() {
ConfigurationSection section;
diff --git a/src/main/java/com/destroystokyo/paper/server/ticklist/PaperTickList.java b/src/main/java/com/destroystokyo/paper/server/ticklist/PaperTickList.java
new file mode 100644
index 0000000000000000000000000000000000000000..5fdaefc128956581be4bb9b34199fd6410563991
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/server/ticklist/PaperTickList.java
@@ -0,0 +1,628 @@
+package com.destroystokyo.paper.server.ticklist;
+
+import java.util.function.Function;
+import net.minecraft.CrashReport;
+import net.minecraft.CrashReportCategory;
+import net.minecraft.ReportedException;
+import net.minecraft.core.BlockPos;
+import net.minecraft.nbt.ListTag;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.server.MCUtil;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.level.ServerChunkCache;
+import net.minecraft.server.level.ServerLevel;
+import net.minecraft.world.level.ChunkPos;
+import net.minecraft.world.level.ServerTickList;
+import net.minecraft.world.level.TickNextTickData;
+import net.minecraft.world.level.TickPriority;
+import net.minecraft.world.level.block.state.BlockState;
+import net.minecraft.world.level.levelgen.structure.BoundingBox;
+import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
+import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
+import it.unimi.dsi.fastutil.objects.ObjectRBTreeSet;
+import java.util.ArrayDeque;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.Iterator;
+import java.util.List;
+import java.util.function.Consumer;
+import java.util.function.Predicate;
+
+public final class PaperTickList<T> extends ServerTickList<T> { // extend to avoid breaking ABI
+
+ // in the order the state is expected to change (mostly)
+ public static final int STATE_UNSCHEDULED = 1 << 0;
+ public static final int STATE_SCHEDULED = 1 << 1; // scheduled for some tick
+ public static final int STATE_PENDING_TICK = 1 << 2; // for this tick
+ public static final int STATE_TICKING = 1 << 3;
+ public static final int STATE_TICKED = 1 << 4; // after this, it gets thrown back to unscheduled
+ public static final int STATE_CANCELLED_TICK = 1 << 5; // still gets moved to unscheduled after tick
+
+ private static final int SHORT_SCHEDULE_TICK_THRESHOLD = 20 * 20 + 1; // 20 seconds
+
+ private final ServerLevel world;
+ private final Predicate<T> excludeFromScheduling;
+ private final Function<T, ResourceLocation> getMinecraftKeyFrom;
+ //private final Function<MinecraftKey, T> getObjectFronMinecraftKey;
+ private final Consumer<TickNextTickData<T>> tickFunction;
+
+ private final co.aikar.timings.Timing timingCleanup; // Paper
+ private final co.aikar.timings.Timing timingTicking; // Paper
+ private final co.aikar.timings.Timing timingFinished;
+
+ // note: remove ops / add ops suck on fastutil, a chained hashtable implementation would work better, but Long...
+ // try to alleviate with a very small load factor
+ private final Long2ObjectOpenHashMap<ArrayList<TickNextTickData<T>>> entriesByBlock = new Long2ObjectOpenHashMap<>(1024, 0.25f);
+ private final Long2ObjectOpenHashMap<ObjectRBTreeSet<TickNextTickData<T>>> entriesByChunk = new Long2ObjectOpenHashMap<>(1024, 0.25f);
+ private final Long2ObjectOpenHashMap<ArrayList<TickNextTickData<T>>> pendingChunkTickLoad = new Long2ObjectOpenHashMap<>(1024, 0.5f);
+
+ // fastutil has O(1) first/last while TreeMap/TreeSet are log(n)
+ private final ObjectRBTreeSet<TickNextTickData<T>> longScheduled = new ObjectRBTreeSet<>(TickListServerInterval.ENTRY_COMPARATOR);
+
+ private final ArrayDeque<TickNextTickData<T>> toTickThisTick = new ArrayDeque<>();
+
+ private final TickListServerInterval<T>[] shortScheduled = new TickListServerInterval[SHORT_SCHEDULE_TICK_THRESHOLD];
+ {
+ for (int i = 0, len = this.shortScheduled.length; i < len; ++i) {
+ this.shortScheduled[i] = new TickListServerInterval<>();
+ }
+ }
+ private int shortScheduledIndex;
+
+ private long currentTick;
+
+ private static final boolean WARN_ON_EXCESSIVE_DELAY = Boolean.getBoolean("paper.ticklist-warn-on-excessive-delay");
+ private static final long EXCESSIVE_DELAY_THRESHOLD = Long.getLong("paper.ticklist-excessive-delay-threshold", 60 * 20).longValue(); // 1 min dfl
+
+ // assume index < length
+ private static int getWrappedIndex(final int start, final int length, final int index) {
+ final int next = start + index;
+ return next < length ? next : next - length;
+ }
+
+ private static int getNextIndex(final int curr, final int length) {
+ final int next = curr + 1;
+ return next < length ? next : 0;
+ }
+
+ public PaperTickList(final ServerLevel world, final Predicate<T> excludeFromScheduling, final Function<T, ResourceLocation> getMinecraftKeyFrom,
+ final Consumer<TickNextTickData<T>> tickFunction, final String timingsType) {
+ super(world, excludeFromScheduling, getMinecraftKeyFrom, tickFunction, timingsType);
+ this.world = world;
+ this.excludeFromScheduling = excludeFromScheduling;
+ this.getMinecraftKeyFrom = getMinecraftKeyFrom;
+ this.tickFunction = tickFunction;
+ this.timingCleanup = co.aikar.timings.WorldTimingsHandler.getTickList(world, timingsType + " - Cleanup"); // Paper
+ this.timingTicking = co.aikar.timings.WorldTimingsHandler.getTickList(world, timingsType + " - Ticking"); // Paper
+ this.timingFinished = co.aikar.timings.WorldTimingsHandler.getTickList(world, timingsType + " - Finish");
+ this.currentTick = this.world.getGameTime();
+ }
+
+ private void queueEntryForTick(final TickNextTickData<T> entry, final ServerChunkCache chunkProvider) {
+ if (entry.tickState == STATE_SCHEDULED) {
+ if (chunkProvider.isPositionTickingWithEntitiesLoaded(entry.pos)) {
+ this.toTickThisTick.add(entry);
+ entry.tickState = STATE_PENDING_TICK;
+ } else {
+ // we dump them to a map to avoid constantly re-scheduling them
+ this.addToNotTickingReady(entry);
+ }
+ }
+ }
+
+ private void addToNotTickingReady(final TickNextTickData<T> entry) {
+ this.pendingChunkTickLoad.computeIfAbsent(MCUtil.getCoordinateKey(entry.pos), (long keyInMap) -> {
+ return new ArrayList<>();
+ }).add(entry);
+ }
+
+ private void addToSchedule(final TickNextTickData<T> entry) {
+ long delay = entry.triggerTick - (this.currentTick + 1);
+ if (delay < SHORT_SCHEDULE_TICK_THRESHOLD) {
+ if (delay < 0) {
+ // longScheduled orders by tick time, short scheduled does not
+ this.longScheduled.add(entry);
+ } else {
+ this.shortScheduled[getWrappedIndex(this.shortScheduledIndex, SHORT_SCHEDULE_TICK_THRESHOLD, (int)delay)].addEntryLast(entry);
+ }
+ } else {
+ this.longScheduled.add(entry);
+ }
+ }
+
+ private void removeEntry(final TickNextTickData<T> entry) {
+ entry.tickState = STATE_CANCELLED_TICK;
+ // short/long scheduled will skip the entry
+
+ final BlockPos pos = entry.pos;
+ final long blockKey = MCUtil.getBlockKey(pos);
+
+ final ArrayList<TickNextTickData<T>> currentEntries = this.entriesByBlock.get(blockKey);
+
+ if (currentEntries.size() == 1) {
+ // it should contain our entry
+ this.entriesByBlock.remove(blockKey);
+ } else {
+ // it's more likely that this entry is at the start of the list than the end
+ for (int i = 0, len = currentEntries.size(); i < len; ++i) {
+ final TickNextTickData<T> currentEntry = currentEntries.get(i);
+ if (currentEntry == entry) {
+ currentEntries.remove(i);
+ break;
+ }
+ }
+ }
+
+ final long chunkKey = MCUtil.getCoordinateKey(entry.pos);
+
+ ObjectRBTreeSet<TickNextTickData<T>> set = this.entriesByChunk.get(chunkKey);
+
+ set.remove(entry);
+
+ if (set.isEmpty()) {
+ this.entriesByChunk.remove(chunkKey);
+ }
+
+ ArrayList<TickNextTickData<T>> pendingTickingLoad = this.pendingChunkTickLoad.get(chunkKey);
+
+ if (pendingTickingLoad != null) {
+ for (int i = 0, len = pendingTickingLoad.size(); i < len; ++i) {
+ if (pendingTickingLoad.get(i) == entry) {
+ pendingTickingLoad.remove(i);
+ break;
+ }
+ }
+
+ if (pendingTickingLoad.isEmpty()) {
+ this.pendingChunkTickLoad.remove(chunkKey);
+ }
+ }
+
+ long delay = entry.triggerTick - (this.currentTick + 1);
+ if (delay >= SHORT_SCHEDULE_TICK_THRESHOLD) {
+ this.longScheduled.remove(entry);
+ }
+ }
+
+ public void onChunkSetTicking(final int chunkX, final int chunkZ) {
+ final ArrayList<TickNextTickData<T>> pending = this.pendingChunkTickLoad.remove(MCUtil.getCoordinateKey(chunkX, chunkZ));
+ if (pending == null) {
+ return;
+ }
+
+ for (int i = 0, size = pending.size(); i < size; ++i) {
+ final TickNextTickData<T> entry = pending.get(i);
+ // already in all the relevant reference maps, just need to add to longScheduled or shortScheduled
+ this.addToSchedule(entry);
+ }
+ }
+
+ private void prepare() {
+ final long currentTick = this.currentTick;
+
+ final ServerChunkCache chunkProvider = this.world.getChunkSource();
+
+ // here we setup what's going to tick
+
+ // we don't remove items from shortScheduled (but do from longScheduled) because they're cleared at the end of
+ // this tick
+ if (this.longScheduled.isEmpty() || this.longScheduled.first().triggerTick > currentTick) {
+ // nothing in longScheduled to worry about
+ final TickListServerInterval<T> interval = this.shortScheduled[this.shortScheduledIndex];
+ for (int i = 0, len = interval.byPriority.length; i < len; ++i) {
+ for (final Iterator<TickNextTickData<T>> iterator = interval.byPriority[i].iterator(); iterator.hasNext();) {
+ this.queueEntryForTick(iterator.next(), chunkProvider);
+ }
+ }
+ } else {
+ final TickListServerInterval<T> interval = this.shortScheduled[this.shortScheduledIndex];
+
+ // combine interval and longScheduled, keeping order
+ final Comparator<TickNextTickData<T>> comparator = (Comparator)TickListServerInterval.ENTRY_COMPARATOR;
+ final Iterator<TickNextTickData<T>> longScheduledIterator = this.longScheduled.iterator();
+ TickNextTickData<T> longCurrent = longScheduledIterator.next();
+
+ for (int i = 0, len = interval.byPriority.length; i < len; ++i) {
+ for (final Iterator<TickNextTickData<T>> iterator = interval.byPriority[i].iterator(); iterator.hasNext();) {
+ final TickNextTickData<T> shortCurrent = iterator.next();
+ if (longCurrent != null) {
+ // drain longCurrent until we can add shortCurrent
+ while (comparator.compare(longCurrent, shortCurrent) <= 0) {
+ this.queueEntryForTick(longCurrent, chunkProvider);
+ longScheduledIterator.remove();
+ if (longScheduledIterator.hasNext()) {
+ longCurrent = longScheduledIterator.next();
+ if (longCurrent.triggerTick > currentTick) {
+ longCurrent = null;
+ break;
+ }
+ } else {
+ longCurrent = null;
+ break;
+ }
+ }
+ }
+ this.queueEntryForTick(shortCurrent, chunkProvider);
+ }
+ }
+
+ // add remaining from long scheduled
+ for (;;) {
+ if (longCurrent == null || longCurrent.triggerTick > currentTick) {
+ break;
+ }
+ longScheduledIterator.remove();
+ this.queueEntryForTick(longCurrent, chunkProvider);
+
+ if (longScheduledIterator.hasNext()) {
+ longCurrent = longScheduledIterator.next();
+ } else {
+ break;
+ }
+ }
+ }
+ }
+
+ private boolean warnedAboutDesync;
+
+ @Override
+ public void nextTick() {
+ ++this.currentTick;
+ if (this.currentTick != this.world.getGameTime()) {
+ if (!this.warnedAboutDesync) {
+ this.warnedAboutDesync = true;
+ MinecraftServer.LOGGER.error("World tick desync detected! Expected " + this.currentTick + " ticks, but got " + this.world.getGameTime() + " ticks for world '" + this.world.getWorld().getName() + "'", new Throwable());
+ MinecraftServer.LOGGER.error("Preventing redstone from breaking by refusing to accept new tick time");
+ }
+ }
+ }
+
+ @Override
+ public void tick() {
+ final ServerChunkCache chunkProvider = this.world.getChunkSource();
+
+ this.world.getProfiler().push("cleaning");
+ this.timingCleanup.startTiming();
+
+ this.prepare();
+
+ // this must be done here in case something schedules in the tick code
+ this.shortScheduled[this.shortScheduledIndex].clear();
+ this.shortScheduledIndex = getNextIndex(this.shortScheduledIndex, SHORT_SCHEDULE_TICK_THRESHOLD);
+
+ this.timingCleanup.stopTiming();
+ this.world.getProfiler().popPush("ticking");
+ this.timingTicking.startTiming();
+
+ for (final TickNextTickData<T> toTick : this.toTickThisTick) {
+ if (toTick.tickState != STATE_PENDING_TICK) {
+ // onTickEnd gets called at end of tick
+ continue;
+ }
+ try {
+ if (chunkProvider.isPositionTickingWithEntitiesLoaded(toTick.pos)) {
+ toTick.tickState = STATE_TICKING;
+ this.tickFunction.accept(toTick);
+ if (toTick.tickState == STATE_TICKING) {
+ toTick.tickState = STATE_TICKED;
+ } // else it's STATE_CANCELLED_TICK
+ } else {
+ // re-schedule eventually
+ toTick.tickState = STATE_SCHEDULED;
+ this.addToNotTickingReady(toTick);
+ }
+ } catch (final Throwable thr) {
+ // start copy from TickListServer // TODO check on update
+ CrashReport crashreport = CrashReport.forThrowable(thr, "Exception while ticking");
+ CrashReportCategory crashreportsystemdetails = crashreport.addCategory("Block being ticked");
+
+ CrashReportCategory.populateBlockDetails(crashreportsystemdetails, this.world, toTick.pos, (BlockState) null);
+ throw new ReportedException(crashreport);
+ // end copy from TickListServer
+ }
+ }
+
+ this.timingTicking.stopTiming();
+ this.world.getProfiler().pop();
+ this.timingFinished.startTiming();
+
+ // finished ticking, actual cleanup time
+ for (int i = 0, len = this.toTickThisTick.size(); i < len; ++i) {
+ final TickNextTickData<T> entry = this.toTickThisTick.poll();
+ if (entry.tickState != STATE_SCHEDULED) {
+ // some entries get re-scheduled due to their chunk not being loaded/at correct status, so do not
+ // call onTickEnd for them
+ this.onTickEnd(entry);
+ }
+ }
+
+ this.timingFinished.stopTiming();
+ }
+
+ private void onTickEnd(final TickNextTickData<T> entry) {
+ if (entry.tickState == STATE_CANCELLED_TICK) {
+ return;
+ }
+ entry.tickState = STATE_UNSCHEDULED;
+
+ final BlockPos pos = entry.pos;
+ final long blockKey = MCUtil.getBlockKey(pos);
+
+ final ArrayList<TickNextTickData<T>> currentEntries = this.entriesByBlock.get(blockKey);
+
+ if (currentEntries.size() == 1) {
+ // it should contain our entry
+ this.entriesByBlock.remove(blockKey);
+ } else {
+ // it's more likely that this entry is at the start of the list than the end
+ for (int i = 0, len = currentEntries.size(); i < len; ++i) {
+ final TickNextTickData<T> currentEntry = currentEntries.get(i);
+ if (currentEntry == entry) {
+ currentEntries.remove(i);
+ break;
+ }
+ }
+ }
+
+ final long chunkKey = MCUtil.getCoordinateKey(entry.pos);
+
+ ObjectRBTreeSet<TickNextTickData<T>> set = this.entriesByChunk.get(chunkKey);
+
+ set.remove(entry);
+
+ if (set.isEmpty()) {
+ this.entriesByChunk.remove(chunkKey);
+ }
+
+ // already removed from longScheduled or shortScheduled
+ }
+
+ @Override
+ public boolean willTickThisTick(final BlockPos blockposition, final T data) {
+ final ArrayList<TickNextTickData<T>> entries = this.entriesByBlock.get(MCUtil.getBlockKey(blockposition));
+
+ if (entries == null) {
+ return false;
+ }
+
+ for (int i = 0, size = entries.size(); i < size; ++i) {
+ final TickNextTickData<T> entry = entries.get(i);
+ if (entry.getType() == data && entry.tickState == STATE_PENDING_TICK) {
+ return true;
+ }
+ }
+
+ return false;
+ }
+
+ @Override
+ public boolean hasScheduledTick(final BlockPos blockposition, final T data) {
+ final ArrayList<TickNextTickData<T>> entries = this.entriesByBlock.get(MCUtil.getBlockKey(blockposition));
+
+ if (entries == null) {
+ return false;
+ }
+
+ for (int i = 0, size = entries.size(); i < size; ++i) {
+ final TickNextTickData<T> entry = entries.get(i);
+ if (entry.getType() == data && entry.tickState == STATE_SCHEDULED) {
+ return true;
+ }
+ }
+
+ return false;
+ }
+
+ @Override
+ public void scheduleTick(BlockPos blockPosition, T t, int i, TickPriority tickListPriority) {
+ this.schedule(blockPosition, t, i + this.currentTick, tickListPriority);
+ }
+
+ public void schedule(final TickNextTickData<T> entry) {
+ this.schedule(entry.pos, entry.getType(), entry.triggerTick, entry.priority);
+ }
+
+ public void schedule(final BlockPos pos, final T data, final long targetTick, final TickPriority priority) {
+ final TickNextTickData<T> entry = new TickNextTickData<>(pos, data, targetTick, priority);
+ if (this.excludeFromScheduling.test(entry.getType())) {
+ return;
+ }
+
+ if (WARN_ON_EXCESSIVE_DELAY) {
+ final long delay = entry.triggerTick - this.currentTick;
+ if (delay >= EXCESSIVE_DELAY_THRESHOLD) {
+ MinecraftServer.LOGGER.warn("Entry " + entry.toString() + " has been scheduled with an excessive delay of: " + delay, new Throwable());
+ }
+ }
+
+ final long blockKey = MCUtil.getBlockKey(pos);
+
+ final ArrayList<TickNextTickData<T>> currentEntries = this.entriesByBlock.computeIfAbsent(blockKey, (long keyInMap) -> new ArrayList<>(3));
+
+ if (currentEntries.isEmpty()) {
+ currentEntries.add(entry);
+ } else {
+ for (int i = 0, size = currentEntries.size(); i < size; ++i) {
+ final TickNextTickData<T> currentEntry = currentEntries.get(i);
+
+ // entries are only blocked from scheduling if currentEntry.equals(toSchedule) && currentEntry is scheduled to tick (NOT including pending)
+ if (currentEntry.getType() == entry.getType() && currentEntry.tickState == STATE_SCHEDULED) {
+ // can't add
+ return;
+ }
+ }
+ currentEntries.add(entry);
+ }
+
+ entry.tickState = STATE_SCHEDULED;
+
+ this.entriesByChunk.computeIfAbsent(MCUtil.getCoordinateKey(entry.pos), (final long keyInMap) -> {
+ return new ObjectRBTreeSet<>(TickListServerInterval.ENTRY_COMPARATOR);
+ }).add(entry);
+
+ this.addToSchedule(entry);
+ }
+
+ public void scheduleAll(final Iterator<TickNextTickData<T>> iterator) {
+ while (iterator.hasNext()) {
+ this.schedule(iterator.next());
+ }
+ }
+
+ // this is not the standard interception calculation, but it's the one vanilla uses
+ // i.e the y value is ignored? the x, z calc isn't correct?
+ // however for the copy op they use the correct intersection, after using this one of course...
+ private static boolean isBlockInSortof(final BoundingBox boundingBox, final BlockPos pos) {
+ return pos.getX() >= boundingBox.minX() && pos.getX() < boundingBox.maxX() && pos.getZ() >= boundingBox.minZ() && pos.getZ() < boundingBox.maxZ();
+ }
+
+ @Override
+ public List<TickNextTickData<T>> fetchTicksInArea(final BoundingBox structureboundingbox, final boolean removeReturned, final boolean excludeTicked) {
+ if (structureboundingbox.minX() == structureboundingbox.maxX() || structureboundingbox.minZ() == structureboundingbox.maxZ()) {
+ return Collections.emptyList(); // vanilla behaviour, check isBlockInSortof above
+ }
+
+ final int lowerChunkX = structureboundingbox.minX() >> 4;
+ final int upperChunkX = (structureboundingbox.maxX() - 1) >> 4; // subtract 1 since maxX is exclusive
+ final int lowerChunkZ = structureboundingbox.minZ() >> 4;
+ final int upperChunkZ = (structureboundingbox.maxZ() - 1) >> 4; // subtract 1 since maxZ is exclusive
+
+ final int xChunksLength = (upperChunkX - lowerChunkX + 1);
+ final int zChunksLength = (upperChunkZ - lowerChunkZ + 1);
+
+ final ObjectRBTreeSet<TickNextTickData<T>>[] containingChunks = new ObjectRBTreeSet[xChunksLength * zChunksLength];
+
+ final int offset = (xChunksLength * -lowerChunkZ - lowerChunkX);
+ int totalEntries = 0;
+ for (int currChunkX = lowerChunkX; currChunkX <= upperChunkX; ++currChunkX) {
+ for (int currChunkZ = lowerChunkZ; currChunkZ <= upperChunkZ; ++currChunkZ) {
+ // todo optimize
+ //final int index = (currChunkX - lowerChunkX) + xChunksLength * (currChunkZ - lowerChunkZ);
+ final int index = offset + currChunkX + xChunksLength * currChunkZ;
+ final ObjectRBTreeSet<TickNextTickData<T>> set = containingChunks[index] = this.entriesByChunk.get(MCUtil.getCoordinateKey(currChunkX, currChunkZ));
+ if (set != null) {
+ totalEntries += set.size();
+ }
+ }
+ }
+
+ final List<TickNextTickData<T>> ret = new ArrayList<>(totalEntries);
+
+ final int matchOne = (STATE_SCHEDULED | STATE_PENDING_TICK) | (excludeTicked ? 0 : (STATE_TICKING | STATE_TICKED));
+
+ MCUtil.mergeSortedSets((TickNextTickData<T> entry) -> {
+ if (!isBlockInSortof(structureboundingbox, entry.pos)) {
+ return;
+ }
+ final int tickState = entry.tickState;
+ if ((tickState & matchOne) == 0) {
+ return;
+ }
+
+ ret.add(entry);
+ return;
+ }, TickListServerInterval.ENTRY_COMPARATOR, containingChunks);
+
+ if (removeReturned) {
+ for (TickNextTickData<T> entry : ret) {
+ this.removeEntry(entry);
+ }
+ }
+
+ return ret;
+ }
+
+ @Override
+ public void copy(BoundingBox structureboundingbox, BlockPos blockposition) {
+ // start copy from TickListServer // TODO check on update
+ List<TickNextTickData<T>> list = this.fetchTicksInArea(structureboundingbox, false, false);
+ Iterator<TickNextTickData<T>> iterator = list.iterator();
+
+ while (iterator.hasNext()) {
+ TickNextTickData<T> nextticklistentry = iterator.next();
+
+ if (structureboundingbox.isInside( nextticklistentry.pos)) {
+ BlockPos blockposition1 = nextticklistentry.pos.offset(blockposition);
+ T t0 = nextticklistentry.getType();
+
+ this.schedule(new TickNextTickData<>(blockposition1, t0, nextticklistentry.triggerTick, nextticklistentry.priority));
+ }
+ }
+ // end copy from TickListServer
+ }
+
+ @Override
+ public List<TickNextTickData<T>> fetchTicksInChunk(ChunkPos chunkPos, boolean removeReturned, boolean excludeTicked) {
+ // Vanilla DOES get the entries 2 blocks out of the chunk too, but that doesn't matter since we ignore chunks
+ // not at ticking status, and ticking status requires neighbours loaded
+ // so with this method we will reduce scheduler churning
+ final int matchOne = (STATE_SCHEDULED | STATE_PENDING_TICK) | (excludeTicked ? 0 : (STATE_TICKING | STATE_TICKED));
+
+ final ObjectRBTreeSet<TickNextTickData<T>> entries = this.entriesByChunk.get(MCUtil.getCoordinateKey(chunkPos));
+
+ if (entries == null) {
+ return Collections.emptyList();
+ }
+
+ final List<TickNextTickData<T>> ret = new ArrayList<>(entries.size());
+
+ for (TickNextTickData<T> entry : entries) {
+ if ((entry.tickState & matchOne) == 0) {
+ continue;
+ }
+ ret.add(entry);
+ }
+
+ if (removeReturned) {
+ for (TickNextTickData<T> entry : ret) {
+ this.removeEntry(entry);
+ }
+ }
+
+ return ret;
+ }
+
+ @Override
+ public ListTag save(ChunkPos chunkcoordintpair) {
+ // start copy from TickListServer // TODO check on update
+ List<TickNextTickData<T>> list = this.fetchTicksInChunk(chunkcoordintpair, false, true);
+
+ return ServerTickList.saveTickList(this.getMinecraftKeyFrom, list, this.currentTick);
+ // end copy from TickListServer
+ }
+
+ @Override
+ public int size() {
+ // good thing this is only used in debug reports // TODO check on update
+ int ret = 0;
+
+ for (TickNextTickData<T> entry : this.longScheduled) {
+ if (entry.tickState == STATE_SCHEDULED) {
+ ++ret;
+ }
+ }
+
+ for (Iterator<Long2ObjectMap.Entry<ArrayList<TickNextTickData<T>>>> iterator = this.pendingChunkTickLoad.long2ObjectEntrySet().iterator(); iterator.hasNext();) {
+ ArrayList<TickNextTickData<T>> list = iterator.next().getValue();
+
+ for (TickNextTickData<T> entry : list) {
+ if (entry.tickState == STATE_SCHEDULED) {
+ ++ret;
+ }
+ }
+ }
+
+ for (TickListServerInterval<T> interval : this.shortScheduled) {
+ for (Iterable<TickNextTickData<T>> set : interval.byPriority) {
+ for (TickNextTickData<T> entry : set) {
+ if (entry.tickState == STATE_SCHEDULED) {
+ ++ret;
+ }
+ }
+ }
+ }
+
+ return ret;
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/server/ticklist/TickListServerInterval.java b/src/main/java/com/destroystokyo/paper/server/ticklist/TickListServerInterval.java
new file mode 100644
index 0000000000000000000000000000000000000000..a1e6f49274a7ae8057a9112e0dd6597a8e58e6da
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/server/ticklist/TickListServerInterval.java
@@ -0,0 +1,41 @@
+package com.destroystokyo.paper.server.ticklist;
+
+import com.destroystokyo.paper.util.set.LinkedSortedSet;
+import java.util.Comparator;
+import net.minecraft.world.level.TickNextTickData;
+import net.minecraft.world.level.TickPriority;
+
+// represents a set of entries to tick at a specified time
+public final class TickListServerInterval<T> {
+
+ public static final int TOTAL_PRIORITIES = TickPriority.values().length;
+ public static final Comparator<TickNextTickData<?>> ENTRY_COMPARATOR_BY_ID = (entry1, entry2) -> {
+ return Long.compare(entry1.getId(), entry2.getId());
+ };
+ public static final Comparator<TickNextTickData<?>> ENTRY_COMPARATOR = (Comparator)TickNextTickData.createTimeComparator();
+
+ // we do not record the interval, this class is meant to be used on a ring buffer
+
+ // inlined enum map for TickListPriority
+ public final LinkedSortedSet<TickNextTickData<T>>[] byPriority = new LinkedSortedSet[TOTAL_PRIORITIES];
+
+ {
+ for (int i = 0, len = this.byPriority.length; i < len; ++i) {
+ this.byPriority[i] = new LinkedSortedSet<>(ENTRY_COMPARATOR_BY_ID);
+ }
+ }
+
+ public void addEntryLast(final TickNextTickData<T> entry) {
+ this.byPriority[entry.priority.ordinal()].addLast(entry);
+ }
+
+ public void addEntryFirst(final TickNextTickData<T> entry) {
+ this.byPriority[entry.priority.ordinal()].addFirst(entry);
+ }
+
+ public void clear() {
+ for (int i = 0, len = this.byPriority.length; i < len; ++i) {
+ this.byPriority[i].clear(); // O(1) clear
+ }
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/util/set/LinkedSortedSet.java b/src/main/java/com/destroystokyo/paper/util/set/LinkedSortedSet.java
new file mode 100644
index 0000000000000000000000000000000000000000..118988c39e58f28e8a2851792b9c014f341f06fc
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/util/set/LinkedSortedSet.java
@@ -0,0 +1,142 @@
+package com.destroystokyo.paper.util.set;
+
+import java.util.Comparator;
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+
+public final class LinkedSortedSet<E> implements Iterable<E> {
+
+ public final Comparator<? super E> comparator;
+
+ protected Link<E> head;
+ protected Link<E> tail;
+
+ public LinkedSortedSet() {
+ this((Comparator)Comparator.naturalOrder());
+ }
+
+ public LinkedSortedSet(final Comparator<? super E> comparator) {
+ this.comparator = comparator;
+ }
+
+ public void clear() {
+ this.head = this.tail = null;
+ }
+
+ @Override
+ public Iterator<E> iterator() {
+ return new Iterator<E>() {
+
+ Link<E> next = LinkedSortedSet.this.head;
+
+ @Override
+ public boolean hasNext() {
+ return this.next != null;
+ }
+
+ @Override
+ public E next() {
+ final Link<E> next = this.next;
+ if (next == null) {
+ throw new NoSuchElementException();
+ }
+ this.next = next.next;
+ return next.element;
+ }
+ };
+ }
+
+ public boolean addLast(final E element) {
+ final Comparator<? super E> comparator = this.comparator;
+
+ Link<E> curr = this.tail;
+ if (curr != null) {
+ int compare;
+
+ while ((compare = comparator.compare(element, curr.element)) < 0) {
+ Link<E> prev = curr;
+ curr = curr.prev;
+ if (curr != null) {
+ continue;
+ }
+ this.head = prev.prev = new Link<>(element, null, prev);
+ return true;
+ }
+
+ if (compare != 0) {
+ // insert after curr
+ final Link<E> next = curr.next;
+ final Link<E> insert = new Link<>(element, curr, next);
+ curr.next = insert;
+
+ if (next == null) {
+ this.tail = insert;
+ } else {
+ next.prev = insert;
+ }
+ return true;
+ }
+
+ return false;
+ } else {
+ this.head = this.tail = new Link<>(element);
+ return true;
+ }
+ }
+
+ public boolean addFirst(final E element) {
+ final Comparator<? super E> comparator = this.comparator;
+
+ Link<E> curr = this.head;
+ if (curr != null) {
+ int compare;
+
+ while ((compare = comparator.compare(element, curr.element)) > 0) {
+ Link<E> prev = curr;
+ curr = curr.next;
+ if (curr != null) {
+ continue;
+ }
+ this.tail = prev.next = new Link<>(element, prev, null);
+ return true;
+ }
+
+ if (compare != 0) {
+ // insert before curr
+ final Link<E> prev = curr.prev;
+ final Link<E> insert = new Link<>(element, prev, curr);
+ curr.prev = insert;
+
+ if (prev == null) {
+ this.head = insert;
+ } else {
+ prev.next = insert;
+ }
+ return true;
+ }
+
+ return false;
+ } else {
+ this.head = this.tail = new Link<>(element);
+ return true;
+ }
+ }
+
+ protected static final class Link<E> {
+ public E element;
+ public Link<E> prev;
+ public Link<E> next;
+
+ public Link() {}
+
+ public Link(final E element) {
+ this.element = element;
+ }
+
+ public Link(final E element, final Link<E> prev, final Link<E> next) {
+ this.element = element;
+ this.prev = prev;
+ this.next = next;
+ }
+ }
+}
diff --git a/src/main/java/net/minecraft/server/level/ChunkHolder.java b/src/main/java/net/minecraft/server/level/ChunkHolder.java
index 84f370e887a3e7ff49296bdf8d6d8de9cc194cfb..daeb5b175d17492f382d23af58a9cc46fbb49e60 100644
--- a/src/main/java/net/minecraft/server/level/ChunkHolder.java
+++ b/src/main/java/net/minecraft/server/level/ChunkHolder.java
@@ -86,6 +86,19 @@ public class ChunkHolder {
return null;
}
// Paper end - no-tick view distance
+ // Paper start
+ public final boolean isEntityTickingReady() {
+ return this.isEntityTickingReady;
+ }
+
+ public final boolean isTickingReady() {
+ return this.isTickingReady;
+ }
+
+ public final boolean isFullChunkReady() {
+ return this.isFullChunkReady;
+ }
+ // Paper end
public ChunkHolder(ChunkPos pos, int level, LevelHeightAccessor world, LevelLightEngine lightingProvider, ChunkHolder.LevelChangeListener levelUpdateListener, ChunkHolder.PlayerProvider playersWatchingChunkProvider) {
this.futures = new AtomicReferenceArray(ChunkHolder.CHUNK_STATUSES.size());
@@ -541,6 +554,11 @@ public class ChunkHolder {
// Paper start - ticking chunk set
ChunkHolder.this.chunkMap.level.getChunkSource().tickingChunks.add(chunk);
// Paper end - ticking chunk set
+ // Paper start - rewrite ticklistserver
+ if (ChunkHolder.this.chunkMap.level.entityManager.areEntitiesLoaded(this.pos.longKey)) {
+ ChunkHolder.this.chunkMap.level.onChunkSetTicking(ChunkHolder.this.pos.x, ChunkHolder.this.pos.z);
+ }
+ // Paper end - rewrite ticklistserver
});
});
// Paper end
diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
index c6213a7dfcf9aeccdb546eaf74fa8eb119a6a32c..ec0d8e58a518a20634b902769251d6d04750433e 100644
--- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
+++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
@@ -218,6 +218,18 @@ public class ServerChunkCache extends ChunkSource {
}, this.mainThreadProcessor);
}
// Paper end
+ // Paper start - rewrite ticklistserver
+ public final boolean isPositionTickingReady(long pos) {
+ final ChunkHolder chunkHolder = this.chunkMap.getUpdatingChunkIfPresent(pos);
+ return chunkHolder != null && chunkHolder.isTickingReady();
+ }
+
+ public final boolean isPositionTickingWithEntitiesLoaded(BlockPos pos) {
+ final long position = net.minecraft.server.MCUtil.getCoordinateKey(pos);
+ final ChunkHolder chunkHolder = this.chunkMap.getUpdatingChunkIfPresent(position);
+ return chunkHolder != null && chunkHolder.isTickingReady() && this.level.entityManager.areEntitiesLoaded(position);
+ }
+ // Paper end - rewrite ticklistserver
// Paper start
// this will try to avoid chunk neighbours for lighting
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 527ae7af221c031b4cdf481f097e9062c41af5ac..a19b3c039751da14f044f05fb5ebfa08c051abe4 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -381,6 +381,15 @@ public class ServerLevel extends Level implements WorldGenLevel {
}
// Paper end
+ // Paper start - rewrite ticklistserver
+ public void onChunkSetTicking(int chunkX, int chunkZ) {
+ if (com.destroystokyo.paper.PaperConfig.useOptimizedTickList) {
+ ((com.destroystokyo.paper.server.ticklist.PaperTickList) this.blockTicks).onChunkSetTicking(chunkX, chunkZ);
+ ((com.destroystokyo.paper.server.ticklist.PaperTickList) this.liquidTicks).onChunkSetTicking(chunkX, chunkZ);
+ }
+ }
+ // Paper end - rewrite ticklistserver
+
// Add env and gen to constructor, WorldData -> WorldDataServer
public ServerLevel(MinecraftServer minecraftserver, Executor executor, LevelStorageSource.LevelStorageAccess convertable_conversionsession, ServerLevelData iworlddataserver, ResourceKey<Level> resourcekey, DimensionType dimensionmanager, ChunkProgressListener worldloadlistener, ChunkGenerator chunkgenerator, boolean flag, long i, List<CustomSpawner> list, boolean flag1, org.bukkit.World.Environment env, org.bukkit.generator.ChunkGenerator gen, org.bukkit.generator.BiomeProvider biomeProvider) {
// Objects.requireNonNull(minecraftserver); // CraftBukkit - decompile error
@@ -397,13 +406,19 @@ public class ServerLevel extends Level implements WorldGenLevel {
DefaultedRegistry registryblocks = Registry.BLOCK;
Objects.requireNonNull(registryblocks);
- this.blockTicks = new ServerTickList<>(this, predicate, Registry.BLOCK::getKey, this::tickBlock, "Blocks"); // CraftBukkit - decompile error // Paper - Timings
+ // this.blockTicks = new ServerTickList<>(this, predicate, Registry.BLOCK::getKey, this::tickBlock, "Blocks"); // CraftBukkit - decompile error // Paper - Timings // Paper - copied down
Predicate<Fluid> predicate2 = (fluidtype) -> { // CraftBukkit - decompile error
return fluidtype == null || fluidtype == Fluids.EMPTY;
};
registryblocks = Registry.FLUID;
Objects.requireNonNull(registryblocks);
+ if (com.destroystokyo.paper.PaperConfig.useOptimizedTickList) {
+ this.blockTicks = new com.destroystokyo.paper.server.ticklist.PaperTickList<>(this, predicate, Registry.BLOCK::getKey, this::tickBlock, "Blocks"); // Paper - Timings
+ this.liquidTicks = new com.destroystokyo.paper.server.ticklist.PaperTickList<>(this, predicate2, Registry.FLUID::getKey, this::tickLiquid, "Fluids"); // Paper timings
+ } else {
+ this.blockTicks = new ServerTickList<>(this, predicate, Registry.BLOCK::getKey, this::tickBlock, "Blocks"); // CraftBukkit - decompile error // Paper - Timings & copied from above
this.liquidTicks = new ServerTickList<>(this, predicate2, Registry.FLUID::getKey, this::tickLiquid, "Fluids"); // CraftBukkit - decompile error // Paper - Timings
+ }
this.navigatingMobs = new ObjectOpenHashSet();
this.blockEvents = new ObjectLinkedOpenHashSet();
this.dragonParts = new Int2ObjectOpenHashMap();
@@ -689,7 +704,9 @@ public class ServerLevel extends Level implements WorldGenLevel {
if (this.tickTime) {
long i = this.levelData.getGameTime() + 1L;
- this.serverLevelData.setGameTime(i);
+ this.serverLevelData.setGameTime(i); ; // Paper - diff on change, we want the below to be ran right after this
+ this.blockTicks.nextTick(); // Paper
+ this.liquidTicks.nextTick(); // Paper
this.serverLevelData.getScheduledEvents().tick(this.server, i);
if (this.levelData.getGameRules().getBoolean(GameRules.RULE_DAYLIGHT)) {
this.setDayTime(this.levelData.getDayTime() + 1L);
diff --git a/src/main/java/net/minecraft/world/level/ChunkTickList.java b/src/main/java/net/minecraft/world/level/ChunkTickList.java
index 1a05edf041cf4aeee7c165fec564ce45adbdd5c7..febc837d324cbe2cd83aea6c1e0d298c70f45f78 100644
--- a/src/main/java/net/minecraft/world/level/ChunkTickList.java
+++ b/src/main/java/net/minecraft/world/level/ChunkTickList.java
@@ -15,7 +15,7 @@ public class ChunkTickList<T> implements TickList<T> {
public ChunkTickList(Function<T, ResourceLocation> identifierProvider, List<TickNextTickData<T>> scheduledTicks, long startTime) {
this(identifierProvider, scheduledTicks.stream().map((tickNextTickData) -> {
- return new ChunkTickList.ScheduledTick(tickNextTickData.getType(), tickNextTickData.pos, (int)(tickNextTickData.triggerTick - startTime), tickNextTickData.priority);
+ return new ChunkTickList.ScheduledTick<>(tickNextTickData.getType(), tickNextTickData.pos, (int)(tickNextTickData.triggerTick - startTime), tickNextTickData.priority); // Paper - decompile error
}).collect(Collectors.toList()));
}
@@ -56,6 +56,7 @@ public class ChunkTickList<T> implements TickList<T> {
return listTag;
}
+ private static final int MAX_TICK_DELAY = Integer.getInteger("paper.ticklist-max-tick-delay", -1).intValue(); // Paper - clean up broken entries
public static <T> ChunkTickList<T> create(ListTag ticks, Function<T, ResourceLocation> function, Function<ResourceLocation, T> function2) {
List<ChunkTickList.ScheduledTick<T>> list = Lists.newArrayList();
@@ -64,7 +65,14 @@ public class ChunkTickList<T> implements TickList<T> {
T object = function2.apply(new ResourceLocation(compoundTag.getString("i")));
if (object != null) {
BlockPos blockPos = new BlockPos(compoundTag.getInt("x"), compoundTag.getInt("y"), compoundTag.getInt("z"));
- list.add(new ChunkTickList.ScheduledTick<>(object, blockPos, compoundTag.getInt("t"), TickPriority.byValue(compoundTag.getInt("p"))));
+ // Paper start - clean up broken entries
+ int delay = compoundTag.getInt("t");
+ if (MAX_TICK_DELAY > 0 && delay > MAX_TICK_DELAY) {
+ net.minecraft.server.MinecraftServer.LOGGER.warn("Dropping tick for pos " + blockPos + ", tick delay " + delay);
+ continue;
+ }
+ // Paper end - clean up broken entries
+ list.add(new ChunkTickList.ScheduledTick<>(object, blockPos, delay, TickPriority.byValue(compoundTag.getInt("p"))));
}
}
diff --git a/src/main/java/net/minecraft/world/level/ServerTickList.java b/src/main/java/net/minecraft/world/level/ServerTickList.java
index dfd41db804acde50339de9b18566b845401d7cbe..0f61dd3a3115f68ccd2c7cb4c9309f5ace96a406 100644
--- a/src/main/java/net/minecraft/world/level/ServerTickList.java
+++ b/src/main/java/net/minecraft/world/level/ServerTickList.java
@@ -51,6 +51,9 @@ public class ServerTickList<T> implements TickList<T> {
this.ticker = tickConsumer;
}
+ // Paper start
+ public void nextTick() {}
+ // Paper end
public void tick() {
int i = this.tickNextTickList.size();
diff --git a/src/main/java/net/minecraft/world/level/TickNextTickData.java b/src/main/java/net/minecraft/world/level/TickNextTickData.java
index 3b8c04f6ffd7e6c197465aa1caf633ba92529472..1007bfc9c19641f42afd5526cfe7bdb61906d1a0 100644
--- a/src/main/java/net/minecraft/world/level/TickNextTickData.java
+++ b/src/main/java/net/minecraft/world/level/TickNextTickData.java
@@ -9,7 +9,9 @@ public class TickNextTickData<T> {
public final BlockPos pos;
public final long triggerTick;
public final TickPriority priority;
- private final long c;
+ private final long c; @Deprecated public final long getId() { return this.c; } // Paper - OBFHELPER
+ private final int hash; // Paper
+ public int tickState; // Paper
public TickNextTickData(BlockPos pos, T t) {
this(pos, t, 0L, TickPriority.NORMAL);
@@ -21,6 +23,7 @@ public class TickNextTickData<T> {
this.type = t;
this.triggerTick = time;
this.priority = priority;
+ this.hash = this.computeHash(); // Paper
}
@Override
@@ -35,17 +38,27 @@ public class TickNextTickData<T> {
@Override
public int hashCode() {
+ // Paper start - optimize hashcode
+ return this.hash;
+ }
+ public final int computeHash() {
+ // Paper end - optimize hashcode
return this.pos.hashCode();
}
public static <T> Comparator<TickNextTickData<T>> createTimeComparator() {
- return Comparator.<TickNextTickData<T>>comparingLong((tickNextTickData) -> { // Paper - decompile fix
- return tickNextTickData.triggerTick;
- }).thenComparing((tickNextTickData) -> {
- return tickNextTickData.priority;
- }).thenComparingLong((tickNextTickData) -> {
- return tickNextTickData.c;
- });
+ // Paper start - let's not use more functional code for no reason.
+ return (Comparator) (Comparator<TickNextTickData>) (TickNextTickData nextticklistentry, TickNextTickData nextticklistentry1) -> {
+ int i = Long.compare(nextticklistentry.triggerTick, nextticklistentry1.triggerTick);
+
+ if (i != 0) {
+ return i;
+ } else {
+ i = nextticklistentry.priority.compareTo(nextticklistentry1.priority);
+ return i != 0 ? i : Long.compare(nextticklistentry.getId(), nextticklistentry1.getId());
+ }
+ };
+ // Paper end - let's not use more functional code for no reason.
}
@Override
diff --git a/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java b/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
index f698723f8f7feecc749df10a316118184391f31a..be65a8a5a853d4e014d44730a48ccf247acf08d2 100644
--- a/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
+++ b/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
@@ -308,6 +308,12 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
List<Entity> entities = this.getEntities(chunkentities.getPos()); // PAIL rename getChunkPos
CraftEventFactory.callEntitiesLoadEvent(((EntityStorage) this.permanentStorage).level, chunkentities.getPos(), entities);
// CraftBukkit end
+ // Paper start - rewrite ServerTickList
+ final net.minecraft.server.level.ServerLevel level = ((net.minecraft.world.level.chunk.storage.EntityStorage) this.permanentStorage).level;
+ if (level.chunkSource.isPositionTickingReady(chunkentities.getPos().longKey)) {
+ level.onChunkSetTicking(chunkentities.getPos().x, chunkentities.getPos().z);
+ }
+ // Paper end
}
}
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