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https://github.com/PaperMC/Paper.git
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18c3716c49
This enables us a fast reference to the entities current chunk instead of having to look it up by hashmap lookups. We also store counts by type to further enable other performance optimizations in later patches.
261 lines
12 KiB
Diff
261 lines
12 KiB
Diff
From 72e8da5083dce12fb49c57cebbab6ea0b7230f45 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Thu, 3 Mar 2016 02:07:55 -0600
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Subject: [PATCH] Optimize isValidLocation, getType and getBlockData for inling
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Hot methods, so reduce # of instructions for the method.
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Move is valid location test to the BlockPosition class so that it can access local variables.
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Replace all calls to the new place to the unnecessary forward.
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Optimize getType and getBlockData to manually inline and optimize the calls
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diff --git a/src/main/java/net/minecraft/server/BaseBlockPosition.java b/src/main/java/net/minecraft/server/BaseBlockPosition.java
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index d55e180d7..679d5504e 100644
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--- a/src/main/java/net/minecraft/server/BaseBlockPosition.java
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+++ b/src/main/java/net/minecraft/server/BaseBlockPosition.java
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@@ -10,6 +10,14 @@ public class BaseBlockPosition implements Comparable<BaseBlockPosition> {
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private final int a;
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private final int b;
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private final int c;
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+ // Paper start
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+ public boolean isValidLocation() {
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+ return a >= -30000000 && c >= -30000000 && a < 30000000 && c < 30000000 && b >= 0 && b < 256;
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+ }
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+ public boolean isInvalidYLocation() {
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+ return b < 0 || b >= 256;
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+ }
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+ // Paper end
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public BaseBlockPosition(int i, int j, int k) {
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this.a = i;
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diff --git a/src/main/java/net/minecraft/server/BlockPosition.java b/src/main/java/net/minecraft/server/BlockPosition.java
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index 67b476b22..008ed206d 100644
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--- a/src/main/java/net/minecraft/server/BlockPosition.java
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+++ b/src/main/java/net/minecraft/server/BlockPosition.java
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@@ -339,6 +339,16 @@ public class BlockPosition extends BaseBlockPosition {
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protected int b;
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protected int c;
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protected int d;
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+ // Paper start
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+ @Override
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+ public boolean isValidLocation() {
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+ return b >= -30000000 && d >= -30000000 && b < 30000000 && d < 30000000 && c >= 0 && c < 256;
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+ }
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+ @Override
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+ public boolean isInvalidYLocation() {
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+ return c < 0 || c >= 256;
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+ }
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+ // Paper end
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public MutableBlockPosition() {
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this(0, 0, 0);
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diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
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index 57b23a018..bf3b64e37 100644
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--- a/src/main/java/net/minecraft/server/Chunk.java
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+++ b/src/main/java/net/minecraft/server/Chunk.java
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@@ -435,11 +435,27 @@ public class Chunk {
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return this.a(i, j, k).c();
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}
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- public IBlockData getBlockData(BlockPosition blockposition) {
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- return this.a(blockposition.getX(), blockposition.getY(), blockposition.getZ());
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+ // Paper start - Optimize getBlockData to reduce instructions
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+ public final IBlockData getBlockData(final BlockPosition pos) {
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+ return getBlockData(pos.getX(), pos.getY(), pos.getZ());
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+ }
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+
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+ public final IBlockData getBlockData(final int x, final int y, final int z) {
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+ // Method body / logic copied from below
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+ final int i = y >> 4;
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+ if (y >= 0 && i < this.sections.length && this.sections[i] != null) {
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+ // Inlined ChunkSection.getType() and DataPaletteBlock.a(int,int,int)
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+ return this.sections[i].blockIds.a((y & 15) << 8 | (z & 15) << 4 | x & 15);
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+ }
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+ return Blocks.AIR.getBlockData();
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}
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public IBlockData a(final int i, final int j, final int k) {
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+ return getBlockData(i, j, k);
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+ }
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+
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+ public IBlockData unused(final int i, final int j, final int k) {
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+ // Paper end
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if (this.world.N() == WorldType.DEBUG_ALL_BLOCK_STATES) {
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IBlockData iblockdata = null;
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diff --git a/src/main/java/net/minecraft/server/ChunkSection.java b/src/main/java/net/minecraft/server/ChunkSection.java
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index 3d784d0dc..afdc4a779 100644
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--- a/src/main/java/net/minecraft/server/ChunkSection.java
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+++ b/src/main/java/net/minecraft/server/ChunkSection.java
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@@ -5,7 +5,7 @@ public class ChunkSection {
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private final int yPos;
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private int nonEmptyBlockCount;
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private int tickingBlockCount;
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- private final DataPaletteBlock blockIds;
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+ final DataPaletteBlock blockIds; // Paper - package
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private NibbleArray emittedLight;
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private NibbleArray skyLight;
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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 b8ae41704..8f0a306cc 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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@@ -277,12 +277,12 @@ public abstract class World implements IBlockAccess {
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return this.getType(blockposition1);
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}
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- private boolean isValidLocation(BlockPosition blockposition) {
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- return !this.E(blockposition) && blockposition.getX() >= -30000000 && blockposition.getZ() >= -30000000 && blockposition.getX() < 30000000 && blockposition.getZ() < 30000000;
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+ private static boolean isValidLocation(BlockPosition blockposition) { // Paper - unused but incase reflection / future uses
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+ return blockposition.isValidLocation(); // Paper
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}
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- private boolean E(BlockPosition blockposition) {
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- return blockposition.getY() < 0 || blockposition.getY() >= 256;
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+ private static boolean E(BlockPosition blockposition) { // Paper - unused but incase reflection / future uses
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+ return blockposition.isInvalidYLocation(); // Paper
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}
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public boolean isEmpty(BlockPosition blockposition) {
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@@ -378,7 +378,7 @@ public abstract class World implements IBlockAccess {
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return true;
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}
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// CraftBukkit end
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- if (this.E(blockposition)) {
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+ if (blockposition.isInvalidYLocation()) { // Paper
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return false;
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} else if (!this.isClientSide && this.worldData.getType() == WorldType.DEBUG_ALL_BLOCK_STATES) {
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return false;
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@@ -695,7 +695,7 @@ public abstract class World implements IBlockAccess {
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// Paper start - test if meets light level, return faster
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// logic copied from below
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public boolean isLightLevel(BlockPosition blockposition, int level) {
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- if (isValidLocation(blockposition)) {
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+ if (blockposition.isValidLocation()) {
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if (this.getType(blockposition).f()) {
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if (this.c(blockposition.up(), false) >= level) {
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return true;
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@@ -814,7 +814,7 @@ public abstract class World implements IBlockAccess {
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blockposition = new BlockPosition(blockposition.getX(), 0, blockposition.getZ());
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}
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- if (!this.isValidLocation(blockposition)) {
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+ if (!blockposition.isValidLocation()) { // Paper
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return enumskyblock.c;
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} else if (!this.isLoaded(blockposition)) {
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return enumskyblock.c;
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@@ -826,7 +826,7 @@ public abstract class World implements IBlockAccess {
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}
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public void a(EnumSkyBlock enumskyblock, BlockPosition blockposition, int i) {
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- if (this.isValidLocation(blockposition)) {
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+ if (blockposition.isValidLocation()) { // Paper
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if (this.isLoaded(blockposition)) {
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Chunk chunk = this.getChunkAtWorldCoords(blockposition);
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@@ -850,19 +850,19 @@ public abstract class World implements IBlockAccess {
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// Paper start - reduces need to do isLoaded before getType
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public IBlockData getTypeIfLoaded(BlockPosition blockposition) {
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// CraftBukkit start - tree generation
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+ final int x = blockposition.getX();
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+ final int y = blockposition.getY();
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+ final int z = blockposition.getZ();
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if (captureTreeGeneration) {
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- Iterator<BlockState> it = capturedBlockStates.iterator();
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- while (it.hasNext()) {
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- BlockState previous = it.next();
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- if (previous.getX() == blockposition.getX() && previous.getY() == blockposition.getY() && previous.getZ() == blockposition.getZ()) {
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- return CraftMagicNumbers.getBlock(previous.getTypeId()).fromLegacyData(previous.getRawData());
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- }
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+ final IBlockData previous = getCapturedBlockType(x, y, z);
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+ if (previous != null) {
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+ return previous;
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}
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}
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// CraftBukkit end
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- Chunk chunk = this.getChunkIfLoaded(blockposition);
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+ Chunk chunk = ((ChunkProviderServer) this.chunkProvider).getChunkIfLoaded(x >> 4, z >> 4);
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if (chunk != null) {
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- return this.isValidLocation(blockposition) ? chunk.getBlockData(blockposition) : Blocks.AIR.getBlockData();
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+ return chunk.getBlockData(x, y, z);
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}
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return null;
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}
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@@ -870,24 +870,33 @@ public abstract class World implements IBlockAccess {
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public IBlockData getType(BlockPosition blockposition) {
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// CraftBukkit start - tree generation
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+ // Paper start - optimize getType lookup to reduce instructions - getBlockData already enforces valid Y, move tree out
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+ final int x = blockposition.getX();
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+ final int y = blockposition.getY();
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+ final int z = blockposition.getZ();
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if (captureTreeGeneration) {
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- Iterator<BlockState> it = capturedBlockStates.iterator();
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- while (it.hasNext()) {
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- BlockState previous = it.next();
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- if (previous.getX() == blockposition.getX() && previous.getY() == blockposition.getY() && previous.getZ() == blockposition.getZ()) {
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- return CraftMagicNumbers.getBlock(previous.getTypeId()).fromLegacyData(previous.getRawData());
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- }
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+ final IBlockData previous = getCapturedBlockType(x, y, z);
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+ if (previous != null) {
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+ return previous;
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}
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}
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// CraftBukkit end
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- if (this.E(blockposition)) {
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- return Blocks.AIR.getBlockData();
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- } else {
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- Chunk chunk = this.getChunkAtWorldCoords(blockposition);
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+ return this.chunkProvider.getChunkAt(x >> 4, z >> 4).getBlockData(x, y, z);
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+ // Paper end
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+ }
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- return chunk.getBlockData(blockposition);
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+ // Paper start
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+ private IBlockData getCapturedBlockType(int x, int y, int z) {
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+ Iterator<BlockState> it = capturedBlockStates.iterator();
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+ while (it.hasNext()) {
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+ BlockState previous = it.next();
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+ if (previous.getX() == x && previous.getY() == y && previous.getZ() == z) {
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+ return CraftMagicNumbers.getBlock(previous.getTypeId()).fromLegacyData(previous.getRawData());
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+ }
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}
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+ return null;
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}
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+ // Paper end
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public boolean D() {
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return this.L < 4;
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@@ -2017,7 +2026,7 @@ public abstract class World implements IBlockAccess {
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public Map<BlockPosition, TileEntity> capturedTileEntities = Maps.newHashMap();
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@Nullable
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public TileEntity getTileEntity(BlockPosition blockposition) {
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- if (this.E(blockposition)) {
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+ if (blockposition.isInvalidYLocation()) { // Paper
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return null;
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} else {
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// CraftBukkit start
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@@ -2058,7 +2067,7 @@ public abstract class World implements IBlockAccess {
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}
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public void setTileEntity(BlockPosition blockposition, @Nullable TileEntity tileentity) {
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- if (!this.E(blockposition)) {
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+ if (!blockposition.isInvalidYLocation()) {
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if (tileentity != null && !tileentity.y()) {
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// CraftBukkit start
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if (captureBlockStates) {
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@@ -2121,7 +2130,7 @@ public abstract class World implements IBlockAccess {
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}
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public boolean d(BlockPosition blockposition, boolean flag) {
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- if (this.E(blockposition)) {
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+ if (blockposition.isInvalidYLocation()) { // Paper
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return false;
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} else {
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Chunk chunk = this.chunkProvider.getLoadedChunkAt(blockposition.getX() >> 4, blockposition.getZ() >> 4);
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--
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2.18.0
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