PaperMC/patches/server/Actually-unload-POI-data.patch
Nassim Jahnke 548f257f50 Updated Upstream (CraftBukkit/Spigot) (#7580)
Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
881e06e5 PR-725: Add Item Unlimited Lifetime APIs

CraftBukkit Changes:
74c08312 SPIGOT-6962: Call EntityChangeBlockEvent when when FallingBlockEntity starts to fall
64db5126 SPIGOT-6959: Make /loot command ignore empty items for spawn
2d760831 Increase outdated build delay
9ed7e4fb SPIGOT-6138, SPIGOT-6415: Don't call CreatureSpawnEvent after cross-dimensional travel
fc4ad813 SPIGOT-6895: Trees grown with applyBoneMeal() don't fire the StructureGrowthEvent
59733a2e SPIGOT-6961: Actually return a copy of the ItemMeta

Spigot Changes:
ffceeae3 SPIGOT-6956: Drop unload queue patch as attempt at fixing stop issue
e19ddabd PR-1011: Add Item Unlimited Lifetime APIs
34d40b0e SPIGOT-2942: give command fires PlayerDropItemEvent, cancelling it causes Item Duplication
2022-03-13 08:47:54 +01:00

325 lines
16 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <spottedleaf@spottedleaf.dev>
Date: Mon, 31 Aug 2020 11:08:17 -0700
Subject: [PATCH] Actually unload POI data
While it's not likely for a poi data leak to be meaningful,
sometimes it is.
This patch also prevents the saving/unloading of POI data when
world saving is disabled.
diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -0,0 +0,0 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
}
// Paper end
}
+ this.getPoiManager().dequeueUnload(holder.pos.longKey); // Paper - unload POI data
this.updatingChunks.queueUpdate(pos, holder); // Paper - Don't copy
this.modified = true;
@@ -0,0 +0,0 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
private void processUnloads(BooleanSupplier shouldKeepTicking) {
LongIterator longiterator = this.toDrop.iterator();
- for (int i = 0; longiterator.hasNext() && (shouldKeepTicking.getAsBoolean() || i < 200 || this.toDrop.size() > 2000); longiterator.remove()) {
+ for (int i = 0; longiterator.hasNext() && (shouldKeepTicking.getAsBoolean() || i < 200 || this.toDrop.size() > 2000); longiterator.remove()) { // Paper - diff on change
long j = longiterator.nextLong();
ChunkHolder playerchunk = this.updatingChunks.queueRemove(j); // Paper - Don't copy
@@ -0,0 +0,0 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
this.regionManagers.get(index).removeChunk(holder.pos.x, holder.pos.z);
}
// Paper end
+ this.getPoiManager().queueUnload(holder.pos.longKey, MinecraftServer.currentTickLong + 1); // Paper - unload POI data
if (ichunkaccess instanceof LevelChunk) {
((LevelChunk) ichunkaccess).setLoaded(false);
}
@@ -0,0 +0,0 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
for (int index = 0, len = this.regionManagers.size(); index < len; ++index) {
this.regionManagers.get(index).removeChunk(holder.pos.x, holder.pos.z);
}
+ this.getPoiManager().queueUnload(holder.pos.longKey, MinecraftServer.currentTickLong + 1); // Paper - unload POI data
} // Paper end
} finally { this.unloadingPlayerChunk = unloadingBefore; } // Paper - do not allow ticket level changes while unloading chunks
@@ -0,0 +0,0 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
}
this.poiManager.loadInData(pos, chunkHolder.poiData);
chunkHolder.tasks.forEach(Runnable::run);
+ this.getPoiManager().dequeueUnload(pos.longKey); // Paper
// Paper end
if (chunkHolder.protoChunk != null) {try (Timing ignored2 = this.level.timings.chunkLoadLevelTimer.startTimingIfSync()) { // Paper start - timings // Paper - chunk is created async
diff --git a/src/main/java/net/minecraft/world/entity/ai/village/poi/PoiManager.java b/src/main/java/net/minecraft/world/entity/ai/village/poi/PoiManager.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/world/entity/ai/village/poi/PoiManager.java
+++ b/src/main/java/net/minecraft/world/entity/ai/village/poi/PoiManager.java
@@ -0,0 +0,0 @@
package net.minecraft.world.entity.ai.village.poi;
+import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap; // Paper
import com.mojang.datafixers.DataFixer;
import com.mojang.datafixers.util.Pair;
import it.unimi.dsi.fastutil.longs.Long2ByteMap;
@@ -0,0 +0,0 @@ import net.minecraft.world.level.chunk.storage.SectionStorage;
public class PoiManager extends SectionStorage<PoiSection> {
public static final int MAX_VILLAGE_DISTANCE = 6;
public static final int VILLAGE_SECTION_SIZE = 1;
- private final PoiManager.DistanceTracker distanceTracker;
+ // Paper start - unload poi data
+ // the vanilla tracker needs to be replaced because it does not support level removes
+ private final io.papermc.paper.util.misc.Delayed26WayDistancePropagator3D villageDistanceTracker = new io.papermc.paper.util.misc.Delayed26WayDistancePropagator3D();
+ static final int POI_DATA_SOURCE = 7;
+ public static int convertBetweenLevels(final int level) {
+ return POI_DATA_SOURCE - level;
+ }
+
+ protected void updateDistanceTracking(long section) {
+ if (this.isVillageCenter(section)) {
+ this.villageDistanceTracker.setSource(section, POI_DATA_SOURCE);
+ } else {
+ this.villageDistanceTracker.removeSource(section);
+ }
+ }
+ // Paper end - unload poi data
private final LongSet loadedChunks = new LongOpenHashSet();
public final net.minecraft.server.level.ServerLevel world; // Paper // Paper public
public PoiManager(Path path, DataFixer dataFixer, boolean dsync, LevelHeightAccessor world) {
super(path, PoiSection::codec, PoiSection::new, dataFixer, DataFixTypes.POI_CHUNK, dsync, world);
+ if (world == null) { throw new IllegalStateException("world must be non-null"); } // Paper - require non-null
this.world = (net.minecraft.server.level.ServerLevel)world; // Paper
- this.distanceTracker = new PoiManager.DistanceTracker();
}
+ // Paper start - actually unload POI data
+ private final java.util.TreeSet<QueuedUnload> queuedUnloads = new java.util.TreeSet<>();
+ private final Long2ObjectOpenHashMap<QueuedUnload> queuedUnloadsByCoordinate = new Long2ObjectOpenHashMap<>();
+
+ static final class QueuedUnload implements Comparable<QueuedUnload> {
+
+ private final long unloadTick;
+ private final long coordinate;
+
+ public QueuedUnload(long unloadTick, long coordinate) {
+ this.unloadTick = unloadTick;
+ this.coordinate = coordinate;
+ }
+
+ @Override
+ public int compareTo(QueuedUnload other) {
+ if (other.unloadTick == this.unloadTick) {
+ return Long.compare(this.coordinate, other.coordinate);
+ } else {
+ return Long.compare(this.unloadTick, other.unloadTick);
+ }
+ }
+
+ @Override
+ public int hashCode() {
+ int hash = 1;
+ hash = hash * 31 + Long.hashCode(this.unloadTick);
+ hash = hash * 31 + Long.hashCode(this.coordinate);
+ return hash;
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (obj == null || obj.getClass() != QueuedUnload.class) {
+ return false;
+ }
+ QueuedUnload other = (QueuedUnload)obj;
+ return other.unloadTick == this.unloadTick && other.coordinate == this.coordinate;
+ }
+ }
+
+ long determineDelay(long coordinate) {
+ if (this.isEmpty(coordinate)) {
+ return 5 * 60 * 20;
+ } else {
+ return 60 * 20;
+ }
+ }
+
+ public void queueUnload(long coordinate, long minTarget) {
+ io.papermc.paper.util.TickThread.softEnsureTickThread("async poi unload queue");
+ QueuedUnload unload = new QueuedUnload(minTarget + this.determineDelay(coordinate), coordinate);
+ QueuedUnload existing = this.queuedUnloadsByCoordinate.put(coordinate, unload);
+ if (existing != null) {
+ this.queuedUnloads.remove(existing);
+ }
+ this.queuedUnloads.add(unload);
+ }
+
+ public void dequeueUnload(long coordinate) {
+ io.papermc.paper.util.TickThread.softEnsureTickThread("async poi unload dequeue");
+ QueuedUnload unload = this.queuedUnloadsByCoordinate.remove(coordinate);
+ if (unload != null) {
+ this.queuedUnloads.remove(unload);
+ }
+ }
+
+ public void pollUnloads(BooleanSupplier canSleepForTick) {
+ io.papermc.paper.util.TickThread.softEnsureTickThread("async poi unload");
+ long currentTick = net.minecraft.server.MinecraftServer.currentTickLong;
+ net.minecraft.server.level.ServerChunkCache chunkProvider = this.world.getChunkSource();
+ net.minecraft.server.level.ChunkMap playerChunkMap = chunkProvider.chunkMap;
+ // copied target determination from PlayerChunkMap
+
+ java.util.Iterator<QueuedUnload> iterator = this.queuedUnloads.iterator();
+ for (int i = 0; iterator.hasNext() && (i < 200 || this.queuedUnloads.size() > 2000 || canSleepForTick.getAsBoolean()); i++) {
+ QueuedUnload unload = iterator.next();
+ if (unload.unloadTick > currentTick) {
+ break;
+ }
+
+ long coordinate = unload.coordinate;
+
+ iterator.remove();
+ this.queuedUnloadsByCoordinate.remove(coordinate);
+
+ if (playerChunkMap.getUnloadingChunkHolder(net.minecraft.server.MCUtil.getCoordinateX(coordinate), net.minecraft.server.MCUtil.getCoordinateZ(coordinate)) != null
+ || playerChunkMap.getUpdatingChunkIfPresent(coordinate) != null) {
+ continue;
+ }
+
+ this.unloadData(coordinate);
+ }
+ }
+
+ @Override
+ public void unloadData(long coordinate) {
+ io.papermc.paper.util.TickThread.softEnsureTickThread("async unloading poi data");
+ super.unloadData(coordinate);
+ }
+
+ @Override
+ protected void onUnload(long coordinate) {
+ io.papermc.paper.util.TickThread.softEnsureTickThread("async poi unload callback");
+ this.loadedChunks.remove(coordinate);
+ int chunkX = net.minecraft.server.MCUtil.getCoordinateX(coordinate);
+ int chunkZ = net.minecraft.server.MCUtil.getCoordinateZ(coordinate);
+ for (int section = this.levelHeightAccessor.getMinSection(); section < this.levelHeightAccessor.getMaxSection(); ++section) {
+ long sectionPos = SectionPos.asLong(chunkX, section, chunkZ);
+ this.updateDistanceTracking(sectionPos);
+ }
+ }
+ // Paper end - actually unload POI data
+
public void add(BlockPos pos, PoiType type) {
this.getOrCreate(SectionPos.asLong(pos)).add(pos, type);
}
@@ -0,0 +0,0 @@ public class PoiManager extends SectionStorage<PoiSection> {
}
public int sectionsToVillage(SectionPos pos) {
- this.distanceTracker.runAllUpdates();
- return this.distanceTracker.getLevel(pos.asLong());
+ this.villageDistanceTracker.propagateUpdates(); // Paper - replace distance tracking util
+ return convertBetweenLevels(this.villageDistanceTracker.getLevel(io.papermc.paper.util.CoordinateUtils.getChunkSectionKey(pos))); // Paper - replace distance tracking util
}
boolean isVillageCenter(long pos) {
@@ -0,0 +0,0 @@ public class PoiManager extends SectionStorage<PoiSection> {
@Override
public void tick(BooleanSupplier shouldKeepTicking) {
// Paper start - async chunk io
- while (!this.dirty.isEmpty() && shouldKeepTicking.getAsBoolean()) {
+ while (!this.dirty.isEmpty() && shouldKeepTicking.getAsBoolean() && !this.world.noSave()) { // Paper - unload POI data - don't write to disk if saving is disabled
ChunkPos chunkcoordintpair = SectionPos.of(this.dirty.firstLong()).chunk();
net.minecraft.nbt.CompoundTag data;
@@ -0,0 +0,0 @@ public class PoiManager extends SectionStorage<PoiSection> {
com.destroystokyo.paper.io.PaperFileIOThread.Holder.INSTANCE.scheduleSave(this.world,
chunkcoordintpair.x, chunkcoordintpair.z, data, null, com.destroystokyo.paper.io.PrioritizedTaskQueue.NORMAL_PRIORITY);
}
+ // Paper start - unload POI data
+ if (!this.world.noSave()) { // don't write to disk if saving is disabled
+ this.pollUnloads(shouldKeepTicking);
+ }
+ // Paper end - unload POI data
// Paper end
- this.distanceTracker.runAllUpdates();
+ this.villageDistanceTracker.propagateUpdates(); // Paper - replace distance tracking until
}
@Override
protected void setDirty(long pos) {
super.setDirty(pos);
- this.distanceTracker.update(pos, this.distanceTracker.getLevelFromSource(pos), false);
+ this.updateDistanceTracking(pos); // Paper - move to new distance tracking util
}
@Override
protected void onSectionLoad(long pos) {
- this.distanceTracker.update(pos, this.distanceTracker.getLevelFromSource(pos), false);
+ this.updateDistanceTracking(pos); // Paper - move to new distance tracking util
}
public void checkConsistencyWithBlocks(ChunkPos chunkPos, LevelChunkSection chunkSection) {
@@ -0,0 +0,0 @@ public class PoiManager extends SectionStorage<PoiSection> {
@Override
protected int getLevelFromSource(long id) {
- return PoiManager.this.isVillageCenter(id) ? 0 : 7;
+ return PoiManager.this.isVillageCenter(id) ? 0 : 7; // Paper - unload poi data - diff on change, this specifies the source level to use for distance tracking
}
@Override
diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/SectionStorage.java b/src/main/java/net/minecraft/world/level/chunk/storage/SectionStorage.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/world/level/chunk/storage/SectionStorage.java
+++ b/src/main/java/net/minecraft/world/level/chunk/storage/SectionStorage.java
@@ -0,0 +0,0 @@ public class SectionStorage<R> extends RegionFileStorage implements AutoCloseabl
// Paper - remove mojang I/O thread
}
+ // Paper start - actually unload POI data
+ public void unloadData(long coordinate) {
+ ChunkPos chunkPos = new ChunkPos(coordinate);
+ this.flush(chunkPos);
+
+ Long2ObjectMap<Optional<R>> data = this.storage;
+ int before = data.size();
+
+ for (int section = this.levelHeightAccessor.getMinSection(); section < this.levelHeightAccessor.getMaxSection(); ++section) {
+ data.remove(SectionPos.asLong(chunkPos.x, section, chunkPos.z));
+ }
+
+ if (before != data.size()) {
+ this.onUnload(coordinate);
+ }
+ }
+
+ protected void onUnload(long coordinate) {}
+
+ public boolean isEmpty(long coordinate) {
+ Long2ObjectMap<Optional<R>> data = this.storage;
+ int x = net.minecraft.server.MCUtil.getCoordinateX(coordinate);
+ int z = net.minecraft.server.MCUtil.getCoordinateZ(coordinate);
+ for (int section = this.levelHeightAccessor.getMinSection(); section < this.levelHeightAccessor.getMaxSection(); ++section) {
+ Optional<R> optional = data.get(SectionPos.asLong(x, section, z));
+ if (optional != null && optional.orElse(null) != null) {
+ return false;
+ }
+ }
+
+ return true;
+ }
+ // Paper end - actually unload POI data
+
protected void tick(BooleanSupplier shouldKeepTicking) {
while(this.hasWork() && shouldKeepTicking.getAsBoolean()) {
ChunkPos chunkPos = SectionPos.of(this.dirty.firstLong()).chunk();
@@ -0,0 +0,0 @@ public class SectionStorage<R> extends RegionFileStorage implements AutoCloseabl
});
}
}
+ if (this instanceof net.minecraft.world.entity.ai.village.poi.PoiManager) { ((net.minecraft.world.entity.ai.village.poi.PoiManager)this).queueUnload(pos.longKey, net.minecraft.server.MinecraftServer.currentTickLong + 1); } // Paper - unload POI data
}