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Paper/patches/server/0592-Improve-and-expand-AsyncCatcher.patch
Spottedleaf 8c5b837e05 Rework async chunk api implementation 
Firstly, the old methods all routed to the CompletableFuture method.
However, the CF method could not guarantee that if the caller
was off-main that the future would be "completed" on-main. Since
the callback methods used the CF one, this meant that the callback
methods did not guarantee that the callbacks were to be called on
the main thread.

Now, all methods route to getChunkAtAsync(x, z, gen, urgent, cb)
so that the methods with the callback are guaranteed to invoke
the callback on the main thread. The CF behavior remains unchanged;
it may still appear to complete on main if invoked off-main.

Secondly, remove the scheduleOnMain invocation in the async
chunk completion. This unnecessarily delays the callback
by 1 tick.

Thirdly, add getChunksAtAsync(minX, minZ, maxX, maxZ, ...) which
will load chunks within an area. This method is provided as a helper
as keeping all chunks loaded within an area can be complicated to
implement for plugins (due to the lacking ticket API), and is
already implemented internally anyways.

Fourthly, remove the ticket addition that occured with getChunkAt
and getChunkAtAsync. The ticket addition may delay the unloading
of the chunk unnecessarily. It also fixes a very rare timing bug
where the future/callback would be completed after the chunk
unloads.
2024-11-18 23:00:59 -08:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Wed, 25 Aug 2021 20:17:12 -0700
Subject: [PATCH] Improve and expand AsyncCatcher
Log when the async catcher is tripped
The chunk system can swallow the exception given it's all
built with completablefuture, so ensure it is at least printed.
Add/move several async catchers
Async catch modifications to critical entity state
These used to be here from Spigot, but were dropped with 1.17.
Now in 1.17, this state is _even more_ critical than it was before,
so these must exist to catch stupid plugins.
Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 70b891bd018029eda8cda4fb9f919e77524dbc5e..a4abcbc69ccd023a936d02d359ba4c08198ed31e 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -1597,6 +1597,7 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
}
public void internalTeleport(PositionMoveRotation positionmoverotation, Set<Relative> set) {
+ org.spigotmc.AsyncCatcher.catchOp("teleport"); // Paper
// Paper start - Prevent teleporting dead entities
if (player.isRemoved()) {
LOGGER.info("Attempt to teleport removed player {} restricted", player.getScoreboardName());
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index f240a63f39affc048d1c13eb184f4b07c6c52d3e..a06a696fcec124d307eb84c1ee4f20ec928bfaec 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -1143,7 +1143,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
}
public boolean addEffect(MobEffectInstance mobeffect, @Nullable Entity entity, EntityPotionEffectEvent.Cause cause) {
- org.spigotmc.AsyncCatcher.catchOp("effect add"); // Spigot
+ // org.spigotmc.AsyncCatcher.catchOp("effect add"); // Spigot // Paper - move to API
if (this.isTickingEffects) {
this.effectsToProcess.add(new ProcessableEffect(mobeffect, cause));
return true;
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 4eb0b0969325f39a7ae65492cccd482515a50142..5aa74c00a61282830d82359eae2b114e2a48b6d9 100644
--- a/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
+++ b/src/main/java/net/minecraft/world/level/entity/PersistentEntitySectionManager.java
@@ -78,6 +78,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
}
private boolean addEntityUuid(T entity) {
+ org.spigotmc.AsyncCatcher.catchOp("Entity add by UUID"); // Paper
if (!this.knownUuids.add(entity.getUUID())) {
PersistentEntitySectionManager.LOGGER.warn("UUID of added entity already exists: {}", entity);
return false;
@@ -91,6 +92,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
}
private boolean addEntity(T entity, boolean existing) {
+ org.spigotmc.AsyncCatcher.catchOp("Entity add"); // Paper
// Paper start - chunk system hooks
// I don't want to know why this is a generic type.
Entity entityCasted = (Entity)entity;
@@ -144,19 +146,23 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
}
void startTicking(T entity) {
+ org.spigotmc.AsyncCatcher.catchOp("Entity start ticking"); // Paper
this.callbacks.onTickingStart(entity);
}
void stopTicking(T entity) {
+ org.spigotmc.AsyncCatcher.catchOp("Entity stop ticking"); // Paper
this.callbacks.onTickingEnd(entity);
}
void startTracking(T entity) {
+ org.spigotmc.AsyncCatcher.catchOp("Entity start tracking"); // Paper
this.visibleEntityStorage.add(entity);
this.callbacks.onTrackingStart(entity);
}
void stopTracking(T entity) {
+ org.spigotmc.AsyncCatcher.catchOp("Entity stop tracking"); // Paper
this.callbacks.onTrackingEnd(entity);
this.visibleEntityStorage.remove(entity);
}
@@ -168,6 +174,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
}
public void updateChunkStatus(ChunkPos chunkPos, Visibility trackingStatus) {
+ org.spigotmc.AsyncCatcher.catchOp("Update chunk status"); // Paper
long i = chunkPos.toLong();
if (trackingStatus == Visibility.HIDDEN) {
@@ -212,6 +219,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
}
public void ensureChunkQueuedForLoad(long chunkPos) {
+ org.spigotmc.AsyncCatcher.catchOp("Entity chunk save"); // Paper
PersistentEntitySectionManager.ChunkLoadStatus persistententitysectionmanager_b = (PersistentEntitySectionManager.ChunkLoadStatus) this.chunkLoadStatuses.get(chunkPos);
if (persistententitysectionmanager_b == PersistentEntitySectionManager.ChunkLoadStatus.FRESH) {
@@ -256,6 +264,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
}
private void requestChunkLoad(long chunkPos) {
+ org.spigotmc.AsyncCatcher.catchOp("Entity chunk load request"); // Paper
this.chunkLoadStatuses.put(chunkPos, PersistentEntitySectionManager.ChunkLoadStatus.PENDING);
ChunkPos chunkcoordintpair = new ChunkPos(chunkPos);
CompletableFuture completablefuture = this.permanentStorage.loadEntities(chunkcoordintpair);
@@ -269,6 +278,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
}
private boolean processChunkUnload(long chunkPos) {
+ org.spigotmc.AsyncCatcher.catchOp("Entity chunk unload process"); // Paper
boolean flag = this.storeChunkSections(chunkPos, (entityaccess) -> {
entityaccess.getPassengersAndSelf().forEach(this::unloadEntity);
}, true); // CraftBukkit - add boolean for event call
@@ -293,6 +303,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
}
private void processPendingLoads() {
+ org.spigotmc.AsyncCatcher.catchOp("Entity chunk process pending loads"); // Paper
ChunkEntities<T> chunkentities; // CraftBukkit - decompile error
while ((chunkentities = (ChunkEntities) this.loadingInbox.poll()) != null) {
@@ -309,6 +320,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
}
public void tick() {
+ org.spigotmc.AsyncCatcher.catchOp("Entity manager tick"); // Paper
this.processPendingLoads();
this.processUnloads();
}
@@ -329,6 +341,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
}
public void autoSave() {
+ org.spigotmc.AsyncCatcher.catchOp("Entity manager autosave"); // Paper
this.getAllChunksToSave().forEach((java.util.function.LongConsumer) (i) -> { // CraftBukkit - decompile error
boolean flag = this.chunkVisibility.get(i) == Visibility.HIDDEN;
@@ -343,6 +356,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
}
public void saveAll() {
+ org.spigotmc.AsyncCatcher.catchOp("Entity manager save"); // Paper
LongSet longset = this.getAllChunksToSave();
while (!longset.isEmpty()) {
@@ -450,6 +464,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
long i = SectionPos.asLong(blockposition);
if (i != this.currentSectionKey) {
+ org.spigotmc.AsyncCatcher.catchOp("Entity move"); // Paper
Visibility visibility = this.currentSection.getStatus();
if (!this.currentSection.remove(this.entity)) {
@@ -504,6 +519,7 @@ public class PersistentEntitySectionManager<T extends EntityAccess> implements A
@Override
public void onRemove(Entity.RemovalReason reason) {
+ org.spigotmc.AsyncCatcher.catchOp("Entity remove"); // Paper
if (!this.currentSection.remove(this.entity)) {
PersistentEntitySectionManager.LOGGER.warn("Entity {} wasn't found in section {} (destroying due to {})", new Object[]{this.entity, SectionPos.of(this.currentSectionKey), reason});
}
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index 1812dcd6e21d6de834ce6c39b5b69cee31a5fa06..8fdae6c7d37d2403d95d37fe0dc35f168ce0f256 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -1750,6 +1750,7 @@ public class CraftWorld extends CraftRegionAccessor implements World {
@Override
public void playSound(Location loc, Sound sound, org.bukkit.SoundCategory category, float volume, float pitch, long seed) {
+ org.spigotmc.AsyncCatcher.catchOp("play sound"); // Paper
if (loc == null || sound == null || category == null) return;
double x = loc.getX();
@@ -1761,6 +1762,7 @@ public class CraftWorld extends CraftRegionAccessor implements World {
@Override
public void playSound(Location loc, String sound, org.bukkit.SoundCategory category, float volume, float pitch, long seed) {
+ org.spigotmc.AsyncCatcher.catchOp("play sound"); // Paper
if (loc == null || sound == null || category == null) return;
double x = loc.getX();
@@ -1793,6 +1795,7 @@ public class CraftWorld extends CraftRegionAccessor implements World {
@Override
public void playSound(Entity entity, Sound sound, org.bukkit.SoundCategory category, float volume, float pitch, long seed) {
+ org.spigotmc.AsyncCatcher.catchOp("play sound"); // Paper
if (!(entity instanceof CraftEntity craftEntity) || entity.getWorld() != this || sound == null || category == null) return;
ClientboundSoundEntityPacket packet = new ClientboundSoundEntityPacket(CraftSound.bukkitToMinecraftHolder(sound), net.minecraft.sounds.SoundSource.valueOf(category.name()), craftEntity.getHandle(), volume, pitch, seed);
@@ -1813,6 +1816,7 @@ public class CraftWorld extends CraftRegionAccessor implements World {
@Override
public void playSound(Entity entity, String sound, org.bukkit.SoundCategory category, float volume, float pitch, long seed) {
+ org.spigotmc.AsyncCatcher.catchOp("play sound"); // Paper
if (!(entity instanceof CraftEntity craftEntity) || entity.getWorld() != this || sound == null || category == null) return;
ClientboundSoundEntityPacket packet = new ClientboundSoundEntityPacket(Holder.direct(SoundEvent.createVariableRangeEvent(ResourceLocation.parse(sound))), net.minecraft.sounds.SoundSource.valueOf(category.name()), craftEntity.getHandle(), volume, pitch, seed);
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
index 9870222cc1c46bcc37f9d3d44881606f2b9d038e..e148239d4930e5cbb000beed4de386f992f28d88 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
@@ -534,6 +534,7 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
@Override
public boolean addPotionEffect(PotionEffect effect, boolean force) {
+ org.spigotmc.AsyncCatcher.catchOp("effect add"); // Paper
this.getHandle().addEffect(org.bukkit.craftbukkit.potion.CraftPotionUtil.fromBukkit(effect), EntityPotionEffectEvent.Cause.PLUGIN); // Paper - Don't ignore icon
return true;
}
diff --git a/src/main/java/org/spigotmc/AsyncCatcher.java b/src/main/java/org/spigotmc/AsyncCatcher.java
index bbf0d9d9c44fe8d7add2f978994ec129420814c7..ef2598760458833021ef1bee92137f42c9fe591f 100644
--- a/src/main/java/org/spigotmc/AsyncCatcher.java
+++ b/src/main/java/org/spigotmc/AsyncCatcher.java
@@ -11,6 +11,7 @@ public class AsyncCatcher
{
if ( AsyncCatcher.enabled && Thread.currentThread() != MinecraftServer.getServer().serverThread )
{
+ MinecraftServer.LOGGER.error("Thread " + Thread.currentThread().getName() + " failed main thread check: " + reason, new Throwable()); // Paper
throw new IllegalStateException( "Asynchronous " + reason + "!" );
}
}
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