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Improve Structures Checking 

Improves performance by keying every chunk thats part of a structure to a hashmap
instead of only the first one.

This allows us to avoid iterating the entire structures value set to see
if a block position is inside of a structure.

This should have pretty decent performance improvement to any standard world
that has been around for a whilewith lots of structures due to ineffeciencies
in how MC stores structures (even unloaded chunks has structured data loaded)
This commit is contained in:
Aikar 2017-11-11 18:47:30 -05:00
parent e04bef9785
commit 0f2c274998
5 changed files with 223 additions and 20 deletions
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17
Spigot-Server-Patches/0005-MC-Utils.patch
View File

@ -1,4 +1,4 @@
From 512e126bf403f6ed82dcf54491fe3357a8430464 Mon Sep 17 00:00:00 2001
From f12d521a85a8487c53f0c0545a7c1aa6fd2953ed Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 28 Mar 2016 20:55:47 -0400
Subject: [PATCH] MC Utils
@ -25,6 +25,19 @@ index 4bbebb25a..c4d9344a7 100644
@Nullable
public TileEntity a(BlockPosition blockposition, Chunk.EnumTileEntityState chunk_enumtileentitystate) {
// CraftBukkit start
diff --git a/src/main/java/net/minecraft/server/ChunkCoordIntPair.java b/src/main/java/net/minecraft/server/ChunkCoordIntPair.java
index 239440888..aafd23beb 100644
--- a/src/main/java/net/minecraft/server/ChunkCoordIntPair.java
+++ b/src/main/java/net/minecraft/server/ChunkCoordIntPair.java
@@ -15,6 +15,8 @@ public class ChunkCoordIntPair {
this.z = blockposition.getZ() >> 4;
}
+ public static long asLong(final BlockPosition pos) { return a(pos.getX() >> 4, pos.getZ() >> 4); } // Paper - OBFHELPER
+ public static long asLong(int x, int z) { return a(x, z); } // Paper - OBFHELPER
public static long a(int i, int j) {
return (long) i & 4294967295L | ((long) j & 4294967295L) << 32;
}
diff --git a/src/main/java/net/minecraft/server/DataPaletteBlock.java b/src/main/java/net/minecraft/server/DataPaletteBlock.java
index 1f2fe87b6..2cb462b8e 100644
--- a/src/main/java/net/minecraft/server/DataPaletteBlock.java
@ -299,5 +312,5 @@ index 8cede938a..cd2d58bfb 100644
return System.nanoTime() / 1000000L;
}
--
2.14.3
2.15.0

8
Spigot-Server-Patches/0006-Timings-v2.patch
View File

@ -1,4 +1,4 @@
From e610c7b15e2671e15ed2c59c617dfe5240fb9c13 Mon Sep 17 00:00:00 2001
From 456890d91c1d97836f3c67cf40acdfa724ac6745 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Thu, 3 Mar 2016 04:00:11 -0600
Subject: [PATCH] Timings v2
@ -1086,7 +1086,7 @@ index c00aee885..b3356b40f 100644
public void addWhitelist(GameProfile gameprofile) {
diff --git a/src/main/java/net/minecraft/server/StructureGenerator.java b/src/main/java/net/minecraft/server/StructureGenerator.java
index 74e3f42cd..2580a4cf6 100644
index 74e3f42cd..66a80a776 100644
--- a/src/main/java/net/minecraft/server/StructureGenerator.java
+++ b/src/main/java/net/minecraft/server/StructureGenerator.java
@@ -1,5 +1,7 @@
@ -1107,7 +1107,7 @@ index 74e3f42cd..2580a4cf6 100644
public StructureGenerator() {}
+ public String getName() { return a(); } // Paper // OBF HELPER
+ public String getName() { return a(); } // Paper // OBFHELPER
public abstract String a();
protected final synchronized void a(World world, final int i, final int j, int k, int l, ChunkSnapshot chunksnapshot) {
@ -1906,5 +1906,5 @@ index 2bd690fdf..38be7ed71 100644
}
}
--
2.14.3
2.15.0

16
Spigot-Server-Patches/0232-Fix-MC-117075-TE-Unload-Lag-Spike.patch
View File

@ -1,21 +1,9 @@
From 635b62974365f6ae0b039790b1725092c4508043 Mon Sep 17 00:00:00 2001
From 96892dd268a65e7af2375a9ccd7a2286dcbfa162 Mon Sep 17 00:00:00 2001
From: mezz <tehgeek@gmail.com>
Date: Wed, 9 Aug 2017 17:51:22 -0500
Subject: [PATCH] Fix MC-117075: TE Unload Lag Spike
diff --git a/src/main/java/net/minecraft/server/ChunkCoordIntPair.java b/src/main/java/net/minecraft/server/ChunkCoordIntPair.java
index 239440888..e8d1a1c60 100644
--- a/src/main/java/net/minecraft/server/ChunkCoordIntPair.java
+++ b/src/main/java/net/minecraft/server/ChunkCoordIntPair.java
@@ -15,6 +15,7 @@ public class ChunkCoordIntPair {
this.z = blockposition.getZ() >> 4;
}
+ public static long asLong(int x, int z) { return a(x, z); } // Paper - OBFHELPER
public static long a(int i, int j) {
return (long) i & 4294967295L | ((long) j & 4294967295L) << 32;
}
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 30cf4a251..f690aaa10 100644
--- a/src/main/java/net/minecraft/server/World.java
@ -34,5 +22,5 @@ index 30cf4a251..f690aaa10 100644
this.tileEntityListUnload.clear();
}
--
2.14.2
2.15.0

199
Spigot-Server-Patches/0251-Improve-Structures-Checking.patch Normal file
View File

@ -0,0 +1,199 @@
From bbe1d20e6fb529ca5dcf54c45f77894badaf5a1b Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sat, 11 Nov 2017 17:57:39 -0500
Subject: [PATCH] Improve Structures Checking
Improves performance by keying every chunk thats part of a structure to a hashmap
instead of only the first one.
This allows us to avoid iterating the entire structures value set to see
if a block position is inside of a structure.
This should have pretty decent performance improvement to any standard world
that has been around for a whilewith lots of structures due to ineffeciencies
in how MC stores structures (even unloaded chunks has structured data loaded)
diff --git a/src/main/java/net/minecraft/server/StructureBoundingBox.java b/src/main/java/net/minecraft/server/StructureBoundingBox.java
index db419cd99..d9329bd42 100644
--- a/src/main/java/net/minecraft/server/StructureBoundingBox.java
+++ b/src/main/java/net/minecraft/server/StructureBoundingBox.java
@@ -4,12 +4,14 @@ import com.google.common.base.MoreObjects;
public class StructureBoundingBox {
- public int a;
- public int b;
- public int c;
- public int d;
- public int e;
- public int f;
+ public int a; // Paper - If changes, verify low/high getters
+ public int b; // Paper - If changes, verify low/high getters
+ public int c; // Paper - If changes, verify low/high getters
+ public int d; // Paper - If changes, verify low/high getters
+ public int e; // Paper - If changes, verify low/high getters
+ public int f; // Paper - If changes, verify low/high getters
+ public BaseBlockPosition getLowPosition() { return new BaseBlockPosition(a, b, c); } // Paper
+ public BaseBlockPosition getHighPosition() { return new BaseBlockPosition(d, e, f); } // Paper
public StructureBoundingBox() {}
@@ -114,6 +116,7 @@ public class StructureBoundingBox {
this.f += k;
}
+ public boolean contains(BaseBlockPosition baseblockposition) { return b(baseblockposition); } // Paper - OBFHELPER
public boolean b(BaseBlockPosition baseblockposition) {
return baseblockposition.getX() >= this.a && baseblockposition.getX() <= this.d && baseblockposition.getZ() >= this.c && baseblockposition.getZ() <= this.f && baseblockposition.getY() >= this.b && baseblockposition.getY() <= this.e;
}
diff --git a/src/main/java/net/minecraft/server/StructureGenerator.java b/src/main/java/net/minecraft/server/StructureGenerator.java
index e8263baa4..09e49221d 100644
--- a/src/main/java/net/minecraft/server/StructureGenerator.java
+++ b/src/main/java/net/minecraft/server/StructureGenerator.java
@@ -6,6 +6,7 @@ import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
import it.unimi.dsi.fastutil.objects.ObjectIterator;
import java.util.Iterator;
+import java.util.List;
import java.util.Random;
import javax.annotation.Nullable;
@@ -14,6 +15,7 @@ public abstract class StructureGenerator extends WorldGenBase {
private final Timing timing = MinecraftTimings.getStructureTiming(this); // Paper
private PersistentStructure a;
protected Long2ObjectMap<StructureStart> c = new Long2ObjectOpenHashMap(1024);
+ protected Long2ObjectMap<StructureStart> allStructures = new Long2ObjectOpenHashMap(1024); // Paper - Holds ref to structures for every chunk its part of, where as the one above this only holds the vanilla oriented ones.
public StructureGenerator() {}
@@ -29,6 +31,7 @@ public abstract class StructureGenerator extends WorldGenBase {
if (this.a(i, j)) {
StructureStart structurestart = this.b(i, j);
+ populateStructure(structurestart); // Paper
this.c.put(ChunkCoordIntPair.a(i, j), structurestart);
if (structurestart.a()) {
this.a(i, j, structurestart);
@@ -106,6 +109,19 @@ public abstract class StructureGenerator extends WorldGenBase {
@Nullable
protected StructureStart c(BlockPosition blockposition) {
+ // Paper start - replace method
+ StructureStart structureStart = allStructures.get(ChunkCoordIntPair.asLong(blockposition));
+ if (structureStart != null && structureStart.isSizeable() && structureStart.getBoundingBox().contains(blockposition)) {
+ List<StructurePiece> structurePieces = structureStart.getStructurePieces();
+ for (StructurePiece piece : structurePieces) {
+ if (piece.getBoundingBox().contains(blockposition)) {
+ return structureStart;
+ }
+ }
+ }
+
+ return null;
+ /*
ObjectIterator objectiterator = this.c.values().iterator();
while (objectiterator.hasNext()) {
@@ -125,11 +141,16 @@ public abstract class StructureGenerator extends WorldGenBase {
}
return null;
+ */
}
public boolean a(World world, BlockPosition blockposition) {
if (this.g == null) return false; // Paper
this.a(world);
+ // Paper start - Replace method
+ StructureStart structureStart = this.allStructures.get(ChunkCoordIntPair.asLong(blockposition));
+ return structureStart != null && structureStart.isSizeable() && structureStart.getBoundingBox().contains(blockposition);
+ /* // comment out rest
ObjectIterator objectiterator = this.c.values().iterator();
StructureStart structurestart;
@@ -142,7 +163,7 @@ public abstract class StructureGenerator extends WorldGenBase {
structurestart = (StructureStart) objectiterator.next();
} while (!structurestart.a() || !structurestart.b().b((BaseBlockPosition) blockposition));
- return true;
+ return true;*/ // Paper end
}
@Nullable
@@ -177,6 +198,7 @@ public abstract class StructureGenerator extends WorldGenBase {
StructureStart structurestart = WorldGenFactory.a(nbttagcompound1, world);
if (structurestart != null) {
+ populateStructure(structurestart); // Paper
this.c.put(ChunkCoordIntPair.a(i, j), structurestart);
}
}
@@ -187,6 +209,27 @@ public abstract class StructureGenerator extends WorldGenBase {
}
+ // Paper start
+ private void populateStructure(StructureStart structurestart) {
+ for (StructurePiece piece : structurestart.getStructurePieces()) {
+ populateStructure(structurestart, piece.getBoundingBox());
+ }
+ populateStructure(structurestart, structurestart.getBoundingBox());
+ }
+ private void populateStructure(StructureStart structurestart, StructureBoundingBox bb) {
+ if (bb == null) {
+ return;
+ }
+ final BaseBlockPosition low = bb.getLowPosition();
+ final BaseBlockPosition high = bb.getHighPosition();
+ for (int x = low.getX() >> 4, maxX = high.getX() >> 4; x < maxX; x++) {
+ for (int z = low.getZ() >> 4, maxZ = high.getZ() >> 4; z < maxZ; z++) {
+ allStructures.put(ChunkCoordIntPair.asLong(x, z), structurestart);
+ }
+ }
+ }
+ // Paper end
+
private void a(int i, int j, StructureStart structurestart) {
this.a.a(structurestart.a(i, j), i, j);
this.a.c();
diff --git a/src/main/java/net/minecraft/server/StructurePiece.java b/src/main/java/net/minecraft/server/StructurePiece.java
index 93903bc67..fcc13f811 100644
--- a/src/main/java/net/minecraft/server/StructurePiece.java
+++ b/src/main/java/net/minecraft/server/StructurePiece.java
@@ -53,6 +53,7 @@ public abstract class StructurePiece {
public abstract boolean a(World world, Random random, StructureBoundingBox structureboundingbox);
+ public StructureBoundingBox getBoundingBox() { return d(); } // Paper - OBFHELPER
public StructureBoundingBox d() {
return this.l;
}
diff --git a/src/main/java/net/minecraft/server/StructureStart.java b/src/main/java/net/minecraft/server/StructureStart.java
index b6abc74e0..f9bb953d0 100644
--- a/src/main/java/net/minecraft/server/StructureStart.java
+++ b/src/main/java/net/minecraft/server/StructureStart.java
@@ -19,10 +19,12 @@ public abstract class StructureStart {
this.d = j;
}
+ public StructureBoundingBox getBoundingBox() { return b(); } // Paper - OBFHELPER
public StructureBoundingBox b() {
return this.b;
}
+ public List<StructurePiece> getStructurePieces() { return c(); } // Paper - OBFHELPER
public List<StructurePiece> c() {
return this.a;
}
@@ -137,7 +139,7 @@ public abstract class StructureStart {
}
- public boolean a() {
+ public boolean isSizeable() { return a(); } public boolean a() { // Paper - OBFHELPER
return true;
}
--
2.15.0

3
scripts/importmcdev.sh
View File

@ -93,6 +93,9 @@ import PlayerConnectionUtils
import RegionFile
import RegistryBlockID
import RemoteControlListener
import StructureBoundingBox
import StructurePiece
import StructureStart
import TileEntityEnderChest
import TileEntityLootable
import WorldGenStronghold