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89d51d5f29
Paper/patches/server/1007-Remove-streams-from-hot-code.patch
Owen 89d51d5f29
Allow enabling sand duping (#10191) 
Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable.

It should be noted that this decision does not promise all future exploits will be configurable.
2024-03-03 17:05:34 -05:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: JRoy <joshroy126@gmail.com>
Date: Wed, 1 Jul 2020 18:01:49 -0400
Subject: [PATCH] Remove streams from hot code
Co-authored-by: Bjarne Koll <lynxplay101@gmail.com>
Co-authored-by: Spottedleaf <Spottedleaf@users.noreply.github.com>
diff --git a/src/main/java/net/minecraft/world/entity/ai/behavior/GateBehavior.java b/src/main/java/net/minecraft/world/entity/ai/behavior/GateBehavior.java
index 4b31a91a8d8a3b231e323692d0a0f7ae04dc7e89..79e7a7adf9f9d8b9fee7ae3bb3bebab86fa7fd72 100644
--- a/src/main/java/net/minecraft/world/entity/ai/behavior/GateBehavior.java
+++ b/src/main/java/net/minecraft/world/entity/ai/behavior/GateBehavior.java
@@ -52,7 +52,7 @@ public class GateBehavior<E extends LivingEntity> implements BehaviorControl<E>
if (this.hasRequiredMemories(entity)) {
this.status = Behavior.Status.RUNNING;
this.orderPolicy.apply(this.behaviors);
- this.runningPolicy.apply(this.behaviors.stream(), world, entity, time);
+ this.runningPolicy.apply(this.behaviors, world, entity, time); // Paper - Perf: Remove streams from hot code
return true;
} else {
return false;
@@ -61,11 +61,13 @@ public class GateBehavior<E extends LivingEntity> implements BehaviorControl<E>
@Override
public final void tickOrStop(ServerLevel world, E entity, long time) {
- this.behaviors.stream().filter((task) -> {
- return task.getStatus() == Behavior.Status.RUNNING;
- }).forEach((task) -> {
- task.tickOrStop(world, entity, time);
- });
+ // Paper start - Perf: Remove streams from hot code
+ for (final BehaviorControl<? super E> task : this.behaviors) {
+ if (task.getStatus() == Behavior.Status.RUNNING) {
+ task.tickOrStop(world, entity, time);
+ }
+ }
+ // Paper end - Perf: Remove streams from hot code
if (this.behaviors.stream().noneMatch((task) -> {
return task.getStatus() == Behavior.Status.RUNNING;
})) {
@@ -77,12 +79,16 @@ public class GateBehavior<E extends LivingEntity> implements BehaviorControl<E>
@Override
public final void doStop(ServerLevel world, E entity, long time) {
this.status = Behavior.Status.STOPPED;
- this.behaviors.stream().filter((task) -> {
- return task.getStatus() == Behavior.Status.RUNNING;
- }).forEach((task) -> {
- task.doStop(world, entity, time);
- });
- this.exitErasedMemories.forEach(entity.getBrain()::eraseMemory);
+ // Paper start - Perf: Remove streams from hot code
+ for (final BehaviorControl<? super E> task : this.behaviors) {
+ if (task.getStatus() == Behavior.Status.RUNNING) {
+ task.doStop(world, entity, time);
+ }
+ }
+ for (final MemoryModuleType<?> exitErasedMemory : this.exitErasedMemories) {
+ entity.getBrain().eraseMemory(exitErasedMemory);
+ }
+ // Paper end - Perf: Remove streams from hot code
}
@Override
@@ -116,26 +122,30 @@ public class GateBehavior<E extends LivingEntity> implements BehaviorControl<E>
public static enum RunningPolicy {
RUN_ONE {
+ // Paper start - Perf: Remove streams from hot code
@Override
- public <E extends LivingEntity> void apply(Stream<BehaviorControl<? super E>> tasks, ServerLevel world, E entity, long time) {
- tasks.filter((task) -> {
- return task.getStatus() == Behavior.Status.STOPPED;
- }).filter((task) -> {
- return task.tryStart(world, entity, time);
- }).findFirst();
+ public <E extends LivingEntity> void apply(ShufflingList<BehaviorControl<? super E>> tasks, ServerLevel world, E entity, long time) {
+ for (final BehaviorControl<? super E> task : tasks) {
+ if (task.getStatus() == Behavior.Status.STOPPED && task.tryStart(world, entity, time)) {
+ break;
+ }
+ }
+ // Paper end - Perf: Remove streams from hot code
}
},
TRY_ALL {
+ // Paper start - Perf: Remove streams from hot code
@Override
- public <E extends LivingEntity> void apply(Stream<BehaviorControl<? super E>> tasks, ServerLevel world, E entity, long time) {
- tasks.filter((task) -> {
- return task.getStatus() == Behavior.Status.STOPPED;
- }).forEach((task) -> {
- task.tryStart(world, entity, time);
- });
+ public <E extends LivingEntity> void apply(ShufflingList<BehaviorControl<? super E>> tasks, ServerLevel world, E entity, long time) {
+ for (final BehaviorControl<? super E> task : tasks) {
+ if (task.getStatus() == Behavior.Status.STOPPED) {
+ task.tryStart(world, entity, time);
+ }
+ }
+ // Paper end - Perf: Remove streams from hot code
}
};
- public abstract <E extends LivingEntity> void apply(Stream<BehaviorControl<? super E>> tasks, ServerLevel world, E entity, long time);
+ public abstract <E extends LivingEntity> void apply(ShufflingList<BehaviorControl<? super E>> tasks, ServerLevel world, E entity, long time); // Paper - Perf: Remove streams from hot code
}
}
diff --git a/src/main/java/net/minecraft/world/entity/ai/gossip/GossipContainer.java b/src/main/java/net/minecraft/world/entity/ai/gossip/GossipContainer.java
index f1e717dc8320a00c0cc0ff53d97b74e7c1e109fe..2240fc6d5ba9530fcd62d6b560c17a275d4f164a 100644
--- a/src/main/java/net/minecraft/world/entity/ai/gossip/GossipContainer.java
+++ b/src/main/java/net/minecraft/world/entity/ai/gossip/GossipContainer.java
@@ -61,8 +61,22 @@ public class GossipContainer {
});
}
+ // Paper start - Perf: Remove streams from hot code
+ private List<GossipContainer.GossipEntry> decompress() {
+ List<GossipContainer.GossipEntry> list = new it.unimi.dsi.fastutil.objects.ObjectArrayList<>();
+ for (Map.Entry<UUID, GossipContainer.EntityGossips> entry : this.gossips.entrySet()) {
+ for (GossipContainer.GossipEntry cur : entry.getValue().decompress(entry.getKey())) {
+ if (cur.weightedValue() != 0) {
+ list.add(cur);
+ }
+ }
+ }
+ return list;
+ }
+ // Paper end - Perf: Remove streams from hot code
+
private Collection<GossipContainer.GossipEntry> selectGossipsForTransfer(RandomSource random, int count) {
- List<GossipContainer.GossipEntry> list = this.unpack().toList();
+ List<GossipContainer.GossipEntry> list = this.decompress(); // Paper - Perf: Remove streams from hot code
if (list.isEmpty()) {
return Collections.emptyList();
} else {
@@ -156,7 +170,7 @@ public class GossipContainer {
}
public <T> T store(DynamicOps<T> ops) {
- return GossipContainer.GossipEntry.LIST_CODEC.encodeStart(ops, this.unpack().toList()).resultOrPartial((error) -> {
+ return GossipContainer.GossipEntry.LIST_CODEC.encodeStart(ops, this.decompress()).resultOrPartial((error) -> { // Paper - Perf: Remove streams from hot code
LOGGER.warn("Failed to serialize gossips: {}", (Object)error);
}).orElseGet(ops::emptyList);
}
@@ -184,11 +198,23 @@ public class GossipContainer {
final Object2IntMap<GossipType> entries = new Object2IntOpenHashMap<>();
public int weightedValue(Predicate<GossipType> gossipTypeFilter) {
- return this.entries.object2IntEntrySet().stream().filter((entry) -> {
- return gossipTypeFilter.test(entry.getKey());
- }).mapToInt((entry) -> {
- return entry.getIntValue() * (entry.getKey()).weight;
- }).sum();
+ // Paper start - Perf: Remove streams from hot code
+ int weight = 0;
+ for (Object2IntMap.Entry<GossipType> entry : entries.object2IntEntrySet()) {
+ if (gossipTypeFilter.test(entry.getKey())) {
+ weight += entry.getIntValue() * entry.getKey().weight;
+ }
+ }
+ return weight;
+ }
+
+ public List<GossipContainer.GossipEntry> decompress(UUID uuid) {
+ List<GossipContainer.GossipEntry> list = new it.unimi.dsi.fastutil.objects.ObjectArrayList<>();
+ for (Object2IntMap.Entry<GossipType> entry : entries.object2IntEntrySet()) {
+ list.add(new GossipContainer.GossipEntry(uuid, entry.getKey(), entry.getIntValue()));
+ }
+ return list;
+ // Paper end - Perf: Remove streams from hot code
}
public Stream<GossipContainer.GossipEntry> unpack(UUID target) {
diff --git a/src/main/java/net/minecraft/world/entity/ai/sensing/NearestItemSensor.java b/src/main/java/net/minecraft/world/entity/ai/sensing/NearestItemSensor.java
index a41c3365db8e9999b686f5bf4bd888458cee43a5..18e2fd705fe0db7cb9e3afe1ce7c8dcfaf93b1a5 100644
--- a/src/main/java/net/minecraft/world/entity/ai/sensing/NearestItemSensor.java
+++ b/src/main/java/net/minecraft/world/entity/ai/sensing/NearestItemSensor.java
@@ -25,14 +25,18 @@ public class NearestItemSensor extends Sensor<Mob> {
protected void doTick(ServerLevel world, Mob entity) {
Brain<?> brain = entity.getBrain();
List<ItemEntity> list = world.getEntitiesOfClass(ItemEntity.class, entity.getBoundingBox().inflate(32.0D, 16.0D, 32.0D), (itemEntity) -> {
- return true;
+ return itemEntity.closerThan(entity, MAX_DISTANCE_TO_WANTED_ITEM) && entity.wantsToPickUp(itemEntity.getItem()); // Paper - Perf: Move predicate into getEntities
});
list.sort(Comparator.comparingDouble(entity::distanceToSqr));
- Optional<ItemEntity> optional = list.stream().filter((itemEntity) -> {
- return entity.wantsToPickUp(itemEntity.getItem());
- }).filter((itemEntity) -> {
- return itemEntity.closerThan(entity, 32.0D);
- }).filter(entity::hasLineOfSight).findFirst();
- brain.setMemory(MemoryModuleType.NEAREST_VISIBLE_WANTED_ITEM, optional);
+ // Paper start - Perf: remove streams from hot code
+ ItemEntity nearest = null;
+ for (ItemEntity entityItem : list) {
+ if (entity.hasLineOfSight(entityItem)) { // Paper - Perf: Move predicate into getEntities
+ nearest = entityItem;
+ break;
+ }
+ }
+ brain.setMemory(MemoryModuleType.NEAREST_VISIBLE_WANTED_ITEM, Optional.ofNullable(nearest));
+ // Paper end - Perf: remove streams from hot code
}
}
diff --git a/src/main/java/net/minecraft/world/level/levelgen/Beardifier.java b/src/main/java/net/minecraft/world/level/levelgen/Beardifier.java
index bb8d8edb47621665872a5e8fc01512ba40c1b913..dcb62d768d234f60af77ffb589ac2011afcfae4b 100644
--- a/src/main/java/net/minecraft/world/level/levelgen/Beardifier.java
+++ b/src/main/java/net/minecraft/world/level/levelgen/Beardifier.java
@@ -36,9 +36,10 @@ public class Beardifier implements DensityFunctions.BeardifierOrMarker {
int j = pos.getMinBlockZ();
ObjectList<Beardifier.Rigid> objectList = new ObjectArrayList<>(10);
ObjectList<JigsawJunction> objectList2 = new ObjectArrayList<>(32);
- world.startsForStructure(pos, (structure) -> {
+ // Paper start - Perf: Remove streams from hot code
+ for (net.minecraft.world.level.levelgen.structure.StructureStart start : world.startsForStructure(pos, (structure) -> {
return structure.terrainAdaptation() != TerrainAdjustment.NONE;
- }).forEach((start) -> {
+ })) { // Paper end - Perf: Remove streams from hot code
TerrainAdjustment terrainAdjustment = start.getStructure().terrainAdaptation();
for(StructurePiece structurePiece : start.getPieces()) {
@@ -51,9 +52,11 @@ public class Beardifier implements DensityFunctions.BeardifierOrMarker {
}
for(JigsawJunction jigsawJunction : poolElementStructurePiece.getJunctions()) {
- int i = jigsawJunction.getSourceX();
- int j = jigsawJunction.getSourceZ();
- if (i > i - 12 && j > j - 12 && i < i + 15 + 12 && j < j + 15 + 12) {
+ // Paper start - decompile fix
+ int i2 = jigsawJunction.getSourceX();
+ int j2 = jigsawJunction.getSourceZ();
+ if (i2 > i - 12 && j2 > j - 12 && i2 < i + 15 + 12 && j2 < j + 15 + 12) {
+ // Paper end - decompile fix
objectList2.add(jigsawJunction);
}
}
@@ -63,7 +66,7 @@ public class Beardifier implements DensityFunctions.BeardifierOrMarker {
}
}
- });
+ } // Paper - Perf: Remove streams from hot code
return new Beardifier(objectList.iterator(), objectList2.iterator());
}
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