Paper/patches/server/0489-Optimise-getType-calls.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
Rewrite chunk system (#8177) Patch documentation to come Issues with the old system that are fixed now: - World generation does not scale with cpu cores effectively. - Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps. - Unreliable prioritisation of chunk gen/load calls that block the main thread. - Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved. - Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal. - Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles. The above list is not complete. The patch documentation will complete it. New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil. Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft. The old legacy chunk system patches have been moved to the removed folder in case we need them again.
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
2021-06-11 14:02:28 +02:00
Date: Wed, 3 Jun 2020 11:37:13 -0700
Subject: [PATCH] Optimise getType calls
Remove the map lookup for converting from Block->Bukkit Material
diff --git a/src/main/java/net/minecraft/world/level/block/state/BlockState.java b/src/main/java/net/minecraft/world/level/block/state/BlockState.java
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index da878e180c6b94f98dc82c6e8395f63ecc9b2c1e..a9b0f5950b6f97ea4c2a1075946b92008b62c9d9 100644
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--- a/src/main/java/net/minecraft/world/level/block/state/BlockState.java
+++ b/src/main/java/net/minecraft/world/level/block/state/BlockState.java
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@@ -10,6 +10,17 @@ import net.minecraft.world.level.block.state.properties.Property;
public class BlockState extends BlockBehaviour.BlockStateBase {
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public static final Codec<BlockState> CODEC = codec(BuiltInRegistries.BLOCK.byNameCodec(), Block::defaultBlockState).stable();
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+ // Paper start - optimise getType calls
+ org.bukkit.Material cachedMaterial;
+
+ public final org.bukkit.Material getBukkitMaterial() {
+ if (this.cachedMaterial == null) {
+ this.cachedMaterial = org.bukkit.craftbukkit.util.CraftMagicNumbers.getMaterial(this.getBlock());
+ }
+
+ return this.cachedMaterial;
+ }
+ // Paper end - optimise getType calls
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public BlockState(Block block, ImmutableMap<Property<?>, Comparable<?>> propertyMap, MapCodec<BlockState> codec) {
super(block, propertyMap, codec);
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}
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftChunkSnapshot.java b/src/main/java/org/bukkit/craftbukkit/CraftChunkSnapshot.java
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index 0511ac55c4e6d9736ec12e94c9899eb04d5cd2e3..75193684a71d694736087d1a368b8fb6a8c8363b 100644
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--- a/src/main/java/org/bukkit/craftbukkit/CraftChunkSnapshot.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftChunkSnapshot.java
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@@ -84,7 +84,7 @@ public class CraftChunkSnapshot implements ChunkSnapshot {
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public Material getBlockType(int x, int y, int z) {
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this.validateChunkCoordinates(x, y, z);
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- return CraftMagicNumbers.getMaterial(this.blockids[this.getSectionIndex(y)].get(x, y & 0xF, z).getBlock());
+ return this.blockids[this.getSectionIndex(y)].get(x, y & 0xF, z).getBukkitMaterial(); // Paper - optimise getType calls
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}
@Override
diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
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index 89b8abc3e7e946aae2ab3d2c870f2d2c95f9671d..6d9cddb20a069cada6d20e5f61a2ca2ab2c308a0 100644
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--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
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@@ -226,7 +226,7 @@ public class CraftBlock implements Block {
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@Override
public Material getType() {
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- return CraftMagicNumbers.getMaterial(this.world.getBlockState(position).getBlock());
+ return this.world.getBlockState(this.position).getBukkitMaterial(); // Paper - optimise getType calls
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}
@Override
diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java
index 0a755f38fae9dc84440f43113920c5b4c6d8218b..7b9e943b391c061782fccd2b8d705ceec8db50fe 100644
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--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java
@@ -166,7 +166,7 @@ public class CraftBlockState implements BlockState {
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@Override
public Material getType() {
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- return CraftMagicNumbers.getMaterial(this.data.getBlock());
+ return this.data.getBukkitMaterial(); // Paper - optimise getType calls
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}
public void setFlag(int flag) {
diff --git a/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java b/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
index 45c90505c778bfdebf0884190a422d12a0673d71..3399e8cdf2230bd71444abb43829c54d7277ce36 100644
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--- a/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
@@ -50,7 +50,7 @@ public class CraftBlockData implements BlockData {
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@Override
public Material getMaterial() {
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- return CraftMagicNumbers.getMaterial(this.state.getBlock());
+ return this.state.getBukkitMaterial(); // Paper - optimise getType calls
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}
public BlockState getState() {
diff --git a/src/main/java/org/bukkit/craftbukkit/generator/CraftChunkData.java b/src/main/java/org/bukkit/craftbukkit/generator/CraftChunkData.java
index ee88ff2ee86bbd3ccf3e4a0b2310f020f137ef4f..5e15feb408b8a05ec5ee393a604c8d39a91ff106 100644
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--- a/src/main/java/org/bukkit/craftbukkit/generator/CraftChunkData.java
+++ b/src/main/java/org/bukkit/craftbukkit/generator/CraftChunkData.java
@@ -96,7 +96,7 @@ public final class CraftChunkData implements ChunkGenerator.ChunkData {
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@Override
public Material getType(int x, int y, int z) {
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- return CraftMagicNumbers.getMaterial(this.getTypeId(x, y, z).getBlock());
+ return this.getTypeId(x, y, z).getBukkitMaterial(); // Paper - optimise getType calls
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}
@Override