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https://github.com/PaperMC/Paper.git
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287 lines
12 KiB
Diff
287 lines
12 KiB
Diff
From f7a916d804a0d98856017ad2cd6904c34db9f19f Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Sun, 24 Aug 2014 21:35:11 -0400
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Subject: [PATCH] Optimize TileEntity Ticking
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Re-organizes the servers TileEntity Tick List to be bucketed based on their tick interval.
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We now will not even store a Tile Entity that is known to not have any tick function
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(half of them), skipping time spent iterating them and checking if they are valid
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and in a loaded chunk. In other words, a lot of "meta" time wasted on tile entities
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that would never do anything anyways.
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Then by reducing chests to 1 in 20 ticks, we cut out 95% of isLoaded checks and findPlayer
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calls on chests, and 100% of the checks for Signs, the 2 most popular Tile Entities.
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This cuts out a massive amount of checks revolving around TileEntity ticking.
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Servers with large amounts of TileEntities should see significant improvement.
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Finally, this then spreads out the ticking of reduced-rate TileEntities so that they
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do not all tick on the same tick, distributing the load of some TileEntities like Chest.
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diff --git a/src/main/java/net/minecraft/server/TileEntity.java b/src/main/java/net/minecraft/server/TileEntity.java
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index 3c5ec6f..27fedeb 100644
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--- a/src/main/java/net/minecraft/server/TileEntity.java
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+++ b/src/main/java/net/minecraft/server/TileEntity.java
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@@ -56,6 +56,12 @@ public class TileEntity {
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}
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}
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}
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+
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+ // Optimized TileEntity Tick changes
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+ private static int tileEntityCounter = 0;
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+ public boolean isAdded = false;
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+ public int tileId = tileEntityCounter++;
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+
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// Spigot end
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public TileEntity() {}
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diff --git a/src/main/java/net/minecraft/server/TileEntityBeacon.java b/src/main/java/net/minecraft/server/TileEntityBeacon.java
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index 09313ea..198f908 100644
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--- a/src/main/java/net/minecraft/server/TileEntityBeacon.java
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+++ b/src/main/java/net/minecraft/server/TileEntityBeacon.java
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@@ -45,7 +45,7 @@ public class TileEntityBeacon extends TileEntity implements IInventory {
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public TileEntityBeacon() {}
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public void h() {
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- if (this.world.getTime() % 80L == 0L) {
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+ if (true || this.world.getTime() % 80L == 0L) { // PaperSpigot - controlled by Improved Tick handling
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this.y();
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this.x();
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}
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diff --git a/src/main/java/net/minecraft/server/TileEntityChest.java b/src/main/java/net/minecraft/server/TileEntityChest.java
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index c900caf..e27716b 100644
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--- a/src/main/java/net/minecraft/server/TileEntityChest.java
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+++ b/src/main/java/net/minecraft/server/TileEntityChest.java
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@@ -255,7 +255,7 @@ public class TileEntityChest extends TileEntity implements IInventory {
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++this.ticks;
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float f;
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- if (!this.world.isStatic && this.o != 0 && (this.ticks + this.x + this.y + this.z) % 200 == 0) {
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+ if (!this.world.isStatic && this.o != 0 && (this.ticks + this.x + this.y + this.z) % 10 == 0) { // PaperSpigot Reduced 200 -> 10 interval due to reduced tick rate from Improved Tick Handling
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this.o = 0;
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f = 5.0F;
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List list = this.world.a(EntityHuman.class, AxisAlignedBB.a((double) ((float) this.x - f), (double) ((float) this.y - f), (double) ((float) this.z - f), (double) ((float) (this.x + 1) + f), (double) ((float) (this.y + 1) + f), (double) ((float) (this.z + 1) + f)));
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diff --git a/src/main/java/net/minecraft/server/TileEntityEnderChest.java b/src/main/java/net/minecraft/server/TileEntityEnderChest.java
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index b205ab7..d76a2b2 100644
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--- a/src/main/java/net/minecraft/server/TileEntityEnderChest.java
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+++ b/src/main/java/net/minecraft/server/TileEntityEnderChest.java
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@@ -11,7 +11,7 @@ public class TileEntityEnderChest extends TileEntity {
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public void h() {
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super.h();
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- if (++this.k % 20 * 4 == 0) {
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+ if (++this.k % 4 == 0) { // PaperSpigot Reduced (20 * 4) -> 4 interval due to reduced tick rate from Improved Tick Handling
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this.world.playBlockAction(this.x, this.y, this.z, Blocks.ENDER_CHEST, 1, this.j);
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}
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diff --git a/src/main/java/net/minecraft/server/TileEntityLightDetector.java b/src/main/java/net/minecraft/server/TileEntityLightDetector.java
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index 143cffb..de33df0 100644
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--- a/src/main/java/net/minecraft/server/TileEntityLightDetector.java
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+++ b/src/main/java/net/minecraft/server/TileEntityLightDetector.java
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@@ -5,7 +5,7 @@ public class TileEntityLightDetector extends TileEntity {
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public TileEntityLightDetector() {}
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public void h() {
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- if (this.world != null && !this.world.isStatic && this.world.getTime() % 20L == 0L) {
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+ if (this.world != null && !this.world.isStatic /*&& this.world.getTime() % 20L == 0L*/) { // PaperSpigot - interval controlled by Improved Tick Handling
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this.h = this.q();
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if (this.h instanceof BlockDaylightDetector) {
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((BlockDaylightDetector) this.h).e(this.world, this.x, this.y, this.z);
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diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
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index 33c228b..3bf2af0 100644
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--- a/src/main/java/net/minecraft/server/World.java
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+++ b/src/main/java/net/minecraft/server/World.java
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@@ -58,7 +58,7 @@ public abstract class World implements IBlockAccess {
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};
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// Spigot end
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protected List f = new ArrayList();
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- public Set tileEntityList = new HashSet(); // CraftBukkit - ArrayList -> HashSet
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+ public Set tileEntityList = new org.spigotmc.WorldTileEntityList(this); // CraftBukkit - ArrayList -> HashSet
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private List a = new ArrayList();
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private List b = new ArrayList();
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public List players = new ArrayList();
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diff --git a/src/main/java/org/spigotmc/WorldTileEntityList.java b/src/main/java/org/spigotmc/WorldTileEntityList.java
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new file mode 100644
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index 0000000..e7fd3d3
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--- /dev/null
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+++ b/src/main/java/org/spigotmc/WorldTileEntityList.java
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@@ -0,0 +1,174 @@
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+package org.spigotmc;
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+
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+import com.google.common.collect.ArrayListMultimap;
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+import com.google.common.collect.Maps;
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+import com.google.common.collect.Multimap;
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+import net.minecraft.server.*;
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+import net.minecraft.util.gnu.trove.map.hash.TObjectIntHashMap;
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+
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+import java.util.Collection;
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+import java.util.HashSet;
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+import java.util.Iterator;
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+import java.util.Map;
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+
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+public class WorldTileEntityList extends HashSet<TileEntity> {
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+ private static final TObjectIntHashMap<Class<? extends TileEntity>> tileEntityTickIntervals =
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+ new TObjectIntHashMap<Class<? extends TileEntity>>() {{
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+ // Use -1 for no ticking
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+ // These TE's have empty tick methods, doing nothing. Never bother ticking them.
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+ for (Class<? extends TileEntity> ignored : new Class[]{
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+ TileEntityChest.class, // PaperSpigot - Don't tick chests either
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+ TileEntityEnderChest.class, // PaperSpigot - Don't tick chests either
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+ TileEntityRecordPlayer.class,
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+ TileEntityDispenser.class,
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+ TileEntityDropper.class,
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+ TileEntitySign.class,
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+ TileEntityNote.class,
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+ TileEntityEnderPortal.class,
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+ TileEntityCommand.class,
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+ TileEntitySkull.class,
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+ TileEntityComparator.class,
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+ TileEntityFlowerPot.class
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+ }) {
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+ put(ignored, -1);
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+ }
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+
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+ // does findPlayer lookup, so this helps performance to slow down
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+ put(TileEntityEnchantTable.class, 20);
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+
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+ // Slow things down that players won't notice due to craftbukkit "wall time" patches.
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+ // These need to be investigated further before they can be safely used here
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+ //put(TileEntityFurnace.class, 20);
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+ //put(TileEntityBrewingStand.class, 10);
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+
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+ // Vanilla controlled values - These are checks already done in vanilla, so don't tick on ticks we know
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+ // won't do anything anyways
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+ put(TileEntityBeacon.class, 80);
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+ put(TileEntityLightDetector.class, 20);
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+ }};
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+ private static int getInterval(Class<? extends TileEntity> cls) {
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+ int tickInterval = tileEntityTickIntervals.get(cls);
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+ return tickInterval != 0 ? tickInterval : 1;
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+ }
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+
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+ private static int getBucketId(TileEntity entity, Integer interval) {
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+ return entity.tileId % interval;
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+ }
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+
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+ private final Map<Integer, Multimap<Integer, TileEntity>> tickList = Maps.newHashMap();
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+ private final WorldServer world;
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+
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+ public WorldTileEntityList(World world) {
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+ this.world = (WorldServer) world;
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+ }
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+
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+
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+ private Multimap<Integer, TileEntity> getBucket(int interval) {
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+ Multimap<Integer, TileEntity> intervalBucket = tickList.get(interval);
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+ if (intervalBucket == null) {
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+ intervalBucket = ArrayListMultimap.create();
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+ tickList.put(interval, intervalBucket);
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+ }
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+ return intervalBucket;
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+ }
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+
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+ /**
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+ * Adds the TileEntity to the tick list only if it is expected to tick
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+ */
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+ @Override
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+ public boolean add(TileEntity entity) {
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+ if (entity.isAdded) {
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+ return false;
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+ }
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+
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+ int interval = getInterval(entity.getClass());
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+ if (interval > 0) {
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+ entity.isAdded = true;
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+ int bucket = getBucketId(entity, interval);
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+ Multimap<Integer, TileEntity> typeBucket = getBucket(interval);
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+ return typeBucket.put(bucket, entity);
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+ }
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+ return false;
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+ }
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+
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+ @Override
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+ public boolean remove(Object o) {
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+ if (!(o instanceof TileEntity)) {
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+ return false;
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+ }
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+ TileEntity entity = (TileEntity) o;
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+ if (!entity.isAdded) {
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+ return false;
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+ }
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+ entity.isAdded = false;
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+ int interval = getInterval(entity.getClass());
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+ int bucket = getBucketId(entity, interval);
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+ Multimap<Integer, TileEntity> typeBucket = getBucket(interval);
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+ return typeBucket.remove(bucket, entity);
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+ }
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+
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+ @Override
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+ public Iterator iterator() {
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+ return new WorldTileEntityIterator();
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+ }
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+
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+ @Override
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+ public boolean contains(Object o) {
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+ return o instanceof TileEntity && ((TileEntity) o).isAdded;
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+ }
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+
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+ private class WorldTileEntityIterator implements Iterator<TileEntity> {
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+ private final Iterator<Map.Entry<Integer, Multimap<Integer, TileEntity>>> intervalIterator;
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+ private Map.Entry<Integer, Multimap<Integer, TileEntity>> intervalMap = null;
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+ private Iterator<TileEntity> listIterator = null;
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+
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+ protected WorldTileEntityIterator() {
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+ intervalIterator = tickList.entrySet().iterator();
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+ nextInterval();
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+ }
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+
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+ private boolean nextInterval() {
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+ listIterator = null;
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+ if (intervalIterator.hasNext()) {
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+ intervalMap = intervalIterator.next();
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+
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+ final Integer interval = intervalMap.getKey();
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+ final Multimap<Integer, TileEntity> buckets = intervalMap.getValue();
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+
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+ int bucket = (int) (world.getTime() % interval);
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+
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+ if (!buckets.isEmpty() && buckets.containsKey(bucket)) {
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+ final Collection<TileEntity> tileList = buckets.get(bucket);
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+
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+ if (tileList != null && !tileList.isEmpty()) {
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+ listIterator = tileList.iterator();
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+ return true;
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+ }
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+ }
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+ }
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+
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+ return false;
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+
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+ }
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+
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+ @Override
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+ public boolean hasNext() {
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+ do {
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+ if (listIterator != null && listIterator.hasNext()) {
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+ return true;
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+ }
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+ } while (nextInterval());
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+ return false;
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+ }
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+
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+ @Override
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+ public TileEntity next() {
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+ return listIterator.next();
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+ }
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+
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+ @Override
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+ public void remove() {
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+ listIterator.remove();
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+ }
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+ }
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+}
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--
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1.9.1
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