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papermc/Spigot-Server-Patches/0415-Optimize-Hoppers.patch
Aikar f37381ea8a
Optimize Network Manager to not need synchronization 
Removes synchronization from sending packets
Makes normal packet sends no longer need to be wrapped and queued like it use to work.
Adds more packet queue immunities on top of keep alive to let the following scenarios go out
without delay:
  - Keep Alive
  - Chat
  - Kick
  - All of the packets during the Player Joined World event

Hoping that latter one helps join timeout issues more too for slow connections.

Removes processing packet queue off of main thread
  - for the few cases where it is allowed, order is not necessary nor
    should it even be happening concurrently in first place (handshaking/login/status)

Ensures packets sent asynchronously are dispatched on main thread

This helps ensure safety for ProtocolLib as packet listeners
are commonly accessing world state. This will allow you to schedule
a packet to be sent async, but itll be dispatched sync for packet
listeners to process.

This should solve some deadlock risks

This may provide a decent performance improvement because thread synchronization incurs a cache reset
so by avoiding ever entering a synchronized block, we get to avoid that, and packet sending is a really
hot activity.
2020-05-06 05:28:47 -04:00

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From 2e3c16be1393bef658a5488a38309fde4c6550be Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 27 Apr 2016 22:09:52 -0400
Subject: [PATCH] Optimize Hoppers
* Removes unnecessary extra calls to .update() that are very expensive
* Lots of itemstack cloning removed. Only clone if the item is actually moved
* Return true when a plugin cancels inventory move item event instead of false, as false causes pulls to cycle through all items.
However, pushes do not exhibit the same behavior, so this is not something plugins could of been relying on.
* Add option (Default on) to cooldown hoppers when they fail to move an item due to full inventory
* Skip subsequent InventoryMoveItemEvents if a plugin does not use the item after first event fire for an iteration
* Don't check for Entities with Inventories if the block above us is also occluding (not just Inventoried)
* Remove Streams from Item Suck In and restore restore 1.12 AABB checks which is simpler and no voxel allocations (was doing TWO Item Suck ins)
diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index e89ad807ed9..fca4b6e20ab 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -626,4 +626,13 @@ public class PaperWorldConfig {
private void entitiesTargetWithFollowRange() {
entitiesTargetWithFollowRange = getBoolean("entities-target-with-follow-range", entitiesTargetWithFollowRange);
}
+
+ public boolean cooldownHopperWhenFull = true;
+ public boolean disableHopperMoveEvents = false;
+ private void hopperOptimizations() {
+ cooldownHopperWhenFull = getBoolean("hopper.cooldown-when-full", cooldownHopperWhenFull);
+ log("Cooldown Hoppers when Full: " + (cooldownHopperWhenFull ? "enabled" : "disabled"));
+ disableHopperMoveEvents = getBoolean("hopper.disable-move-event", disableHopperMoveEvents);
+ log("Hopper Move Item Events: " + (disableHopperMoveEvents ? "disabled" : "enabled"));
+ }
}
diff --git a/src/main/java/net/minecraft/server/IHopper.java b/src/main/java/net/minecraft/server/IHopper.java
index e1aa272e526..4da26365ec5 100644
--- a/src/main/java/net/minecraft/server/IHopper.java
+++ b/src/main/java/net/minecraft/server/IHopper.java
@@ -12,12 +12,13 @@ public interface IHopper extends IInventory {
return IHopper.c;
}
- @Nullable
+ //@Nullable // Paper - it's annoying
World getWorld();
+ default BlockPosition getBlockPosition() { return new BlockPosition(getX(), getY(), getZ()); } // Paper
- double z();
+ double z();default double getX() { return z(); } // Paper - OBFHELPER
- double A();
+ double A();default double getY() { return A(); } // Paper - OBFHELPER
- double B();
+ double B();default double getZ() { return B(); } // Paper - OBFHELPER
}
diff --git a/src/main/java/net/minecraft/server/ItemStack.java b/src/main/java/net/minecraft/server/ItemStack.java
index d953cdef14a..d6e43313bf0 100644
--- a/src/main/java/net/minecraft/server/ItemStack.java
+++ b/src/main/java/net/minecraft/server/ItemStack.java
@@ -482,11 +482,12 @@ public final class ItemStack {
return this.getItem().a(this, entityhuman, entityliving, enumhand);
}
- public ItemStack cloneItemStack() {
- if (this.isEmpty()) {
+ public ItemStack cloneItemStack() { return cloneItemStack(false); } // Paper
+ public ItemStack cloneItemStack(boolean origItem) { // Paper
+ if (!origItem && this.isEmpty()) { // Paper
return ItemStack.a;
} else {
- ItemStack itemstack = new ItemStack(this.getItem(), this.count);
+ ItemStack itemstack = new ItemStack(origItem ? this.item : this.getItem(), this.count); // Paper
itemstack.d(this.C());
if (this.tag != null) {
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 26be3498704..63db74993c1 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1219,6 +1219,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
WorldServer worldserver = (WorldServer) iterator.next();
worldserver.hasPhysicsEvent = org.bukkit.event.block.BlockPhysicsEvent.getHandlerList().getRegisteredListeners().length > 0; // Paper
+ TileEntityHopper.skipHopperEvents = worldserver.paperConfig.disableHopperMoveEvents || org.bukkit.event.inventory.InventoryMoveItemEvent.getHandlerList().getRegisteredListeners().length == 0; // Paper
if (true || worldserver.worldProvider.getDimensionManager() == DimensionManager.OVERWORLD || this.getAllowNether()) { // CraftBukkit
this.methodProfiler.a(() -> {
return worldserver.getWorldData().getName() + " " + IRegistry.DIMENSION_TYPE.getKey(worldserver.worldProvider.getDimensionManager());
diff --git a/src/main/java/net/minecraft/server/TileEntity.java b/src/main/java/net/minecraft/server/TileEntity.java
index 958279249fd..a8e64dfdab1 100644
--- a/src/main/java/net/minecraft/server/TileEntity.java
+++ b/src/main/java/net/minecraft/server/TileEntity.java
@@ -62,6 +62,7 @@ public abstract class TileEntity implements KeyedObject { // Paper
public void setCurrentChunk(Chunk chunk) {
this.currentChunk = chunk != null ? new java.lang.ref.WeakReference<>(chunk) : null;
}
+ static boolean IGNORE_TILE_UPDATES = false;
// Paper end
@Nullable
@@ -140,6 +141,7 @@ public abstract class TileEntity implements KeyedObject { // Paper
public void update() {
if (this.world != null) {
+ if (IGNORE_TILE_UPDATES) return; // Paper
this.c = this.world.getType(this.position);
this.world.b(this.position, this);
if (!this.c.isAir()) {
diff --git a/src/main/java/net/minecraft/server/TileEntityHopper.java b/src/main/java/net/minecraft/server/TileEntityHopper.java
index 907d088c869..280c4e99e82 100644
--- a/src/main/java/net/minecraft/server/TileEntityHopper.java
+++ b/src/main/java/net/minecraft/server/TileEntityHopper.java
@@ -168,6 +168,160 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper, ITi
return false;
}
+ // Paper start - Optimize Hoppers
+ private static boolean skipPullModeEventFire = false;
+ private static boolean skipPushModeEventFire = false;
+ static boolean skipHopperEvents = false;
+
+ private boolean hopperPush(IInventory iinventory, EnumDirection enumdirection) {
+ skipPushModeEventFire = skipHopperEvents;
+ boolean foundItem = false;
+ for (int i = 0; i < this.getSize(); ++i) {
+ if (!this.getItem(i).isEmpty()) {
+ foundItem = true;
+ ItemStack origItemStack = this.getItem(i);
+ ItemStack itemstack = origItemStack;
+
+ final int origCount = origItemStack.getCount();
+ final int moved = Math.min(world.spigotConfig.hopperAmount, origCount);
+ origItemStack.setCount(moved);
+
+ // We only need to fire the event once to give protection plugins a chance to cancel this event
+ // Because nothing uses getItem, every event call should end up the same result.
+ if (!skipPushModeEventFire) {
+ itemstack = callPushMoveEvent(iinventory, itemstack);
+ if (itemstack == null) { // cancelled
+ origItemStack.setCount(origCount);
+ return false;
+ }
+ }
+ final ItemStack itemstack2 = addItem(this, iinventory, itemstack, enumdirection);
+ final int remaining = itemstack2.getCount();
+ if (remaining != moved) {
+ origItemStack = origItemStack.cloneItemStack(true);
+ origItemStack.setCount(origCount);
+ if (!origItemStack.isEmpty()) {
+ origItemStack.setCount(origCount - moved + remaining);
+ }
+ this.setItem(i, origItemStack);
+ iinventory.update();
+ return true;
+ }
+ origItemStack.setCount(origCount);
+ }
+ }
+ if (foundItem && world.paperConfig.cooldownHopperWhenFull) { // Inventory was full - cooldown
+ this.setCooldown(world.spigotConfig.hopperTransfer);
+ }
+ return false;
+ }
+
+ private static boolean hopperPull(IHopper ihopper, IInventory iinventory, int i) {
+ ItemStack origItemStack = iinventory.getItem(i);
+ ItemStack itemstack = origItemStack;
+ final int origCount = origItemStack.getCount();
+ final World world = ihopper.getWorld();
+ final int moved = Math.min(world.spigotConfig.hopperAmount, origCount);
+ itemstack.setCount(moved);
+
+ if (!skipPullModeEventFire) {
+ itemstack = callPullMoveEvent(ihopper, iinventory, itemstack);
+ if (itemstack == null) { // cancelled
+ origItemStack.setCount(origCount);
+ // Drastically improve performance by returning true.
+ // No plugin could of relied on the behavior of false as the other call
+ // site for IMIE did not exhibit the same behavior
+ return true;
+ }
+ }
+
+ final ItemStack itemstack2 = addItem(iinventory, ihopper, itemstack, null);
+ final int remaining = itemstack2.getCount();
+ if (remaining != moved) {
+ origItemStack = origItemStack.cloneItemStack(true);
+ origItemStack.setCount(origCount);
+ if (!origItemStack.isEmpty()) {
+ origItemStack.setCount(origCount - moved + remaining);
+ }
+ IGNORE_TILE_UPDATES = true;
+ iinventory.setItem(i, origItemStack);
+ IGNORE_TILE_UPDATES = false;
+ iinventory.update();
+ return true;
+ }
+ origItemStack.setCount(origCount);
+
+ if (world.paperConfig.cooldownHopperWhenFull) {
+ cooldownHopper(ihopper);
+ }
+
+ return false;
+ }
+
+ private ItemStack callPushMoveEvent(IInventory iinventory, ItemStack itemstack) {
+ Inventory destinationInventory = getInventory(iinventory);
+ InventoryMoveItemEvent event = new InventoryMoveItemEvent(this.getOwner(false).getInventory(),
+ CraftItemStack.asCraftMirror(itemstack), destinationInventory, true);
+ boolean result = event.callEvent();
+ if (!event.calledGetItem && !event.calledSetItem) {
+ skipPushModeEventFire = true;
+ }
+ if (!result) {
+ cooldownHopper(this);
+ return null;
+ }
+
+ if (event.calledSetItem) {
+ return CraftItemStack.asNMSCopy(event.getItem());
+ } else {
+ return itemstack;
+ }
+ }
+
+ private static ItemStack callPullMoveEvent(IHopper hopper, IInventory iinventory, ItemStack itemstack) {
+ Inventory sourceInventory = getInventory(iinventory);
+ Inventory destination = getInventory(hopper);
+
+ InventoryMoveItemEvent event = new InventoryMoveItemEvent(sourceInventory,
+ // Mirror is safe as we no plugins ever use this item
+ CraftItemStack.asCraftMirror(itemstack), destination, false);
+ boolean result = event.callEvent();
+ if (!event.calledGetItem && !event.calledSetItem) {
+ skipPullModeEventFire = true;
+ }
+ if (!result) {
+ cooldownHopper(hopper);
+ return null;
+ }
+
+ if (event.calledSetItem) {
+ return CraftItemStack.asNMSCopy(event.getItem());
+ } else {
+ return itemstack;
+ }
+ }
+
+ private static Inventory getInventory(IInventory iinventory) {
+ Inventory sourceInventory;// Have to special case large chests as they work oddly
+ if (iinventory instanceof InventoryLargeChest) {
+ sourceInventory = new org.bukkit.craftbukkit.inventory.CraftInventoryDoubleChest((InventoryLargeChest) iinventory);
+ } else if (iinventory instanceof TileEntity) {
+ sourceInventory = ((TileEntity) iinventory).getOwner(false).getInventory();
+ } else {
+ sourceInventory = iinventory.getOwner().getInventory();
+ }
+ return sourceInventory;
+ }
+
+ private static void cooldownHopper(IHopper hopper) {
+ if (hopper instanceof TileEntityHopper) {
+ ((TileEntityHopper) hopper).setCooldown(hopper.getWorld().spigotConfig.hopperTransfer);
+ } else if (hopper instanceof EntityMinecartHopper) {
+ ((EntityMinecartHopper) hopper).setCooldown(hopper.getWorld().spigotConfig.hopperTransfer / 2);
+ }
+ }
+ // Paper end
+
private boolean j() {
IInventory iinventory = this.k();
@@ -179,6 +333,7 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper, ITi
if (this.b(iinventory, enumdirection)) {
return false;
} else {
+ return hopperPush(iinventory, enumdirection); /* // Paper - disable rest
for (int i = 0; i < this.getSize(); ++i) {
if (!this.getItem(i).isEmpty()) {
ItemStack itemstack = this.getItem(i).cloneItemStack();
@@ -216,7 +371,7 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper, ITi
}
}
- return false;
+ return false;*/ // Paper - end commenting out replaced block for Hopper Optimizations
}
}
}
@@ -246,6 +401,7 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper, ITi
EnumDirection enumdirection = EnumDirection.DOWN;
return c(iinventory, enumdirection) ? false : a(iinventory, enumdirection).anyMatch((i) -> {
+ skipPullModeEventFire = skipHopperEvents; // Paper
return a(ihopper, iinventory, i, enumdirection);
});
} else {
@@ -269,6 +425,7 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper, ITi
ItemStack itemstack = iinventory.getItem(i);
if (!itemstack.isEmpty() && b(iinventory, itemstack, i, enumdirection)) {
+ return hopperPull(ihopper, iinventory, i); /* // Paper - disable rest
ItemStack itemstack1 = itemstack.cloneItemStack();
// ItemStack itemstack2 = addItem(iinventory, ihopper, iinventory.splitStack(i, 1), (EnumDirection) null);
// CraftBukkit start - Call event on collection of items from inventories into the hopper
@@ -305,7 +462,7 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper, ITi
}
itemstack1.subtract(origCount - itemstack2.getCount()); // Spigot
- iinventory.setItem(i, itemstack1);
+ iinventory.setItem(i, itemstack1);*/ // Paper - end commenting out replaced block for Hopper Optimizations
}
return false;
@@ -314,7 +471,7 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper, ITi
public static boolean a(IInventory iinventory, EntityItem entityitem) {
boolean flag = false;
// CraftBukkit start
- InventoryPickupItemEvent event = new InventoryPickupItemEvent(iinventory.getOwner().getInventory(), (org.bukkit.entity.Item) entityitem.getBukkitEntity());
+ InventoryPickupItemEvent event = new InventoryPickupItemEvent(getInventory(iinventory), (org.bukkit.entity.Item) entityitem.getBukkitEntity()); // Paper - use getInventory() to avoid snapshot creation
entityitem.world.getServer().getPluginManager().callEvent(event);
if (event.isCancelled()) {
return false;
@@ -368,7 +525,9 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper, ITi
boolean flag1 = iinventory1.isEmpty();
if (itemstack1.isEmpty()) {
+ IGNORE_TILE_UPDATES = true; // Paper
iinventory1.setItem(i, itemstack);
+ IGNORE_TILE_UPDATES = false; // Paper
itemstack = ItemStack.a;
flag = true;
} else if (a(itemstack1, itemstack)) {
@@ -419,18 +578,24 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper, ITi
}
public static List<EntityItem> c(IHopper ihopper) {
- return (List) ihopper.P_().d().stream().flatMap((axisalignedbb) -> {
- return ihopper.getWorld().a(EntityItem.class, axisalignedbb.d(ihopper.z() - 0.5D, ihopper.A() - 0.5D, ihopper.B() - 0.5D), IEntitySelector.a).stream();
- }).collect(Collectors.toList());
+ // Paper start - Optimize item suck in. remove streams, restore 1.12 checks. Seriously checking the bowl?!
+ World world = ihopper.getWorld();
+ double d0 = ihopper.getX();
+ double d1 = ihopper.getY();
+ double d2 = ihopper.getZ();
+ AxisAlignedBB bb = new AxisAlignedBB(d0 - 0.5D, d1, d2 - 0.5D, d0 + 0.5D, d1 + 1.5D, d2 + 0.5D);
+ return world.getEntities(EntityItem.class, bb, Entity::isAlive);
+ // Paper end
}
@Nullable
public static IInventory b(World world, BlockPosition blockposition) {
- return a(world, (double) blockposition.getX() + 0.5D, (double) blockposition.getY() + 0.5D, (double) blockposition.getZ() + 0.5D);
+ return a(world, (double) blockposition.getX() + 0.5D, (double) blockposition.getY() + 0.5D, (double) blockposition.getZ() + 0.5D, true); // Paper
}
@Nullable
- public static IInventory a(World world, double d0, double d1, double d2) {
+ public static IInventory a(World world, double d0, double d1, double d2) { return a(world, d0, d1, d2, false); } // Paper - overload to default false
+ public static IInventory a(World world, double d0, double d1, double d2, boolean optimizeEntities) { // Paper
Object object = null;
BlockPosition blockposition = new BlockPosition(d0, d1, d2);
if ( !world.isLoaded( blockposition ) ) return null; // Spigot
@@ -450,7 +615,7 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper, ITi
}
}
- if (object == null) {
+ if (object == null && (!optimizeEntities || !org.bukkit.craftbukkit.util.CraftMagicNumbers.getMaterial(block).isOccluding())) { // Paper
List<Entity> list = world.getEntities((Entity) null, new AxisAlignedBB(d0 - 0.5D, d1 - 0.5D, d2 - 0.5D, d0 + 0.5D, d1 + 0.5D, d2 + 0.5D), IEntitySelector.d);
if (!list.isEmpty()) {
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 568e04faa31..9e161746f2a 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -1205,8 +1205,8 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
return list;
}
- @Override
- public <T extends Entity> List<T> a(Class<? extends T> oclass, AxisAlignedBB axisalignedbb, @Nullable Predicate<? super T> predicate) {
+ public <T extends Entity> List<T> getEntities(Class<? extends T> oclass, AxisAlignedBB axisalignedbb, @Nullable Predicate<? super T> predicate) { return a(oclass, axisalignedbb, predicate); } // Paper - OBFHELPER
+ @Override public <T extends Entity> List<T> a(Class<? extends T> oclass, AxisAlignedBB axisalignedbb, @Nullable Predicate<? super T> predicate) {
this.getMethodProfiler().c("getEntities");
int i = MathHelper.floor((axisalignedbb.minX - 2.0D) / 16.0D);
int j = MathHelper.f((axisalignedbb.maxX + 2.0D) / 16.0D);
--
2.26.2
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