Paper/Spigot-Server-Patches/0104-Faster-redstone-torch-rapid-clock-removal.patch

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From f2dd438fb714b40068d2c0abed509fc95dc8ecd1 Mon Sep 17 00:00:00 2001
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From: Martin Panzer <postremus1996@googlemail.com>
Date: Mon, 23 May 2016 12:12:37 +0200
Subject: [PATCH] Faster redstone torch rapid clock removal
Only resize the the redstone torch list once, since resizing arrays / lists is costly
diff --git a/src/main/java/net/minecraft/server/BlockRedstoneTorch.java b/src/main/java/net/minecraft/server/BlockRedstoneTorch.java
index 98a255ae57..4c3062ece9 100644
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--- a/src/main/java/net/minecraft/server/BlockRedstoneTorch.java
+++ b/src/main/java/net/minecraft/server/BlockRedstoneTorch.java
@@ -11,7 +11,7 @@ import org.bukkit.event.block.BlockRedstoneEvent; // CraftBukkit
public class BlockRedstoneTorch extends BlockTorch {
public static final BlockStateBoolean LIT = BlockProperties.r;
- private static final Map<IBlockAccess, List<BlockRedstoneTorch.RedstoneUpdateInfo>> b = new WeakHashMap();
+ // Paper - Move the mapped list to World
protected BlockRedstoneTorch(Block.Info block_info) {
super(block_info);
@@ -66,11 +66,16 @@ public class BlockRedstoneTorch extends BlockTorch {
}
public static void a(IBlockData iblockdata, World world, BlockPosition blockposition, Random random, boolean flag) {
- List list = (List) BlockRedstoneTorch.b.get(world);
+ // Paper start
+ java.util.ArrayDeque<BlockRedstoneTorch.RedstoneUpdateInfo> redstoneUpdateInfos = world.redstoneUpdateInfos;
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- while (list != null && !list.isEmpty() && world.getTime() - ((BlockRedstoneTorch.RedstoneUpdateInfo) list.get(0)).b > 60L) {
- list.remove(0);
+ if (redstoneUpdateInfos != null) {
+ BlockRedstoneTorch.RedstoneUpdateInfo curr;
+ while ((curr = redstoneUpdateInfos.peek()) != null && world.getTime() - curr.getTime() > 60L) {
+ redstoneUpdateInfos.poll();
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+ }
}
+ // Paper end
// CraftBukkit start
org.bukkit.plugin.PluginManager manager = world.getServer().getPluginManager();
@@ -140,9 +145,12 @@ public class BlockRedstoneTorch extends BlockTorch {
}
private static boolean a(World world, BlockPosition blockposition, boolean flag) {
- List<BlockRedstoneTorch.RedstoneUpdateInfo> list = (List) BlockRedstoneTorch.b.computeIfAbsent(world, (iblockaccess) -> {
- return Lists.newArrayList();
- });
+ // Paper start
+ java.util.ArrayDeque<BlockRedstoneTorch.RedstoneUpdateInfo> list = world.redstoneUpdateInfos;
+ if (list == null) {
+ list = world.redstoneUpdateInfos = new java.util.ArrayDeque<>();
+ }
+
if (flag) {
list.add(new BlockRedstoneTorch.RedstoneUpdateInfo(blockposition.immutableCopy(), world.getTime()));
@@ -150,9 +158,9 @@ public class BlockRedstoneTorch extends BlockTorch {
int i = 0;
- for (int j = 0; j < list.size(); ++j) {
- BlockRedstoneTorch.RedstoneUpdateInfo blockredstonetorch_redstoneupdateinfo = (BlockRedstoneTorch.RedstoneUpdateInfo) list.get(j);
-
+ for (java.util.Iterator<BlockRedstoneTorch.RedstoneUpdateInfo> iterator = list.iterator(); iterator.hasNext();) {
+ BlockRedstoneTorch.RedstoneUpdateInfo blockredstonetorch_redstoneupdateinfo = iterator.next();
+ // Paper end
if (blockredstonetorch_redstoneupdateinfo.a.equals(blockposition)) {
++i;
if (i >= 8) {
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@@ -167,7 +175,7 @@ public class BlockRedstoneTorch extends BlockTorch {
public static class RedstoneUpdateInfo {
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private final BlockPosition a;
- private final long b;
+ private final long b; final long getTime() { return this.b; } // Paper - OBFHELPER
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public RedstoneUpdateInfo(BlockPosition blockposition, long i) {
this.a = blockposition;
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 1dccc2e0dd..05ee02c4c2 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -84,6 +84,7 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
private org.spigotmc.TickLimiter tileLimiter;
private int tileTickPosition;
public final Map<Explosion.CacheKey, Float> explosionDensityCache = new HashMap<>(); // Paper - Optimize explosions
+ public java.util.ArrayDeque<BlockRedstoneTorch.RedstoneUpdateInfo> redstoneUpdateInfos; // Paper - Move from Map in BlockRedstoneTorch to here
public CraftWorld getWorld() {
return this.world;
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--
2.25.1
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