mirror of
https://github.com/PaperMC/Paper.git
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314 lines
13 KiB
Diff
314 lines
13 KiB
Diff
From 72e9b135797dfd1380fcb3f2fb87aca60437fe69 Mon Sep 17 00:00:00 2001
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From: Mike Primm <mike@primmhome.com>
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Date: Wed, 24 Apr 2013 01:43:33 -0500
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Subject: [PATCH] Improve NextTickList Performance
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Improve next-tick-list performance on chunk unloads, large
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queues
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diff --git a/src/main/java/net/minecraft/server/NextTickListEntry.java b/src/main/java/net/minecraft/server/NextTickListEntry.java
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index acf8838..1e3e0f8 100644
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--- a/src/main/java/net/minecraft/server/NextTickListEntry.java
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+++ b/src/main/java/net/minecraft/server/NextTickListEntry.java
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@@ -30,7 +30,7 @@ public class NextTickListEntry implements Comparable {
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}
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public int hashCode() {
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- return (this.a * 1024 * 1024 + this.c * 1024 + this.b) * 256;
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+ return (this.a * 257) ^ this.b ^ (this.c * 60217); // Spigot - better hash
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}
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public NextTickListEntry a(long i) {
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diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
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index b7e0551..1b69737 100644
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--- a/src/main/java/net/minecraft/server/WorldServer.java
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+++ b/src/main/java/net/minecraft/server/WorldServer.java
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@@ -25,8 +25,8 @@ public class WorldServer extends World implements org.bukkit.BlockChangeDelegate
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private final MinecraftServer server;
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public EntityTracker tracker; // CraftBukkit - private final -> public
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private final PlayerChunkMap manager;
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- private Set L;
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- private TreeSet M;
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+ private org.bukkit.craftbukkit.util.LongObjectHashMap<Set<NextTickListEntry>> tickEntriesByChunk; // Spigot - switch to something better for chunk-wise access
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+ private TreeSet<NextTickListEntry> tickEntryQueue; // Spigot
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public ChunkProviderServer chunkProviderServer;
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public boolean savingDisabled;
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private boolean N;
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@@ -36,7 +36,8 @@ public class WorldServer extends World implements org.bukkit.BlockChangeDelegate
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private NoteDataList[] R = new NoteDataList[] { new NoteDataList((EmptyClass2) null), new NoteDataList((EmptyClass2) null)};
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private int S;
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private static final StructurePieceTreasure[] T = new StructurePieceTreasure[] { new StructurePieceTreasure(Item.STICK.id, 0, 1, 3, 10), new StructurePieceTreasure(Block.WOOD.id, 0, 1, 3, 10), new StructurePieceTreasure(Block.LOG.id, 0, 1, 3, 10), new StructurePieceTreasure(Item.STONE_AXE.id, 0, 1, 1, 3), new StructurePieceTreasure(Item.WOOD_AXE.id, 0, 1, 1, 5), new StructurePieceTreasure(Item.STONE_PICKAXE.id, 0, 1, 1, 3), new StructurePieceTreasure(Item.WOOD_PICKAXE.id, 0, 1, 1, 5), new StructurePieceTreasure(Item.APPLE.id, 0, 2, 3, 5), new StructurePieceTreasure(Item.BREAD.id, 0, 2, 3, 3)};
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- private List U = new ArrayList();
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+ private ArrayList<NextTickListEntry> pendingTickEntries = new ArrayList<NextTickListEntry>(); // Spigot
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+ private int nextPendingTickEntry; // Spigot
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private IntHashMap entitiesById;
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// CraftBukkit start
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@@ -54,13 +55,15 @@ public class WorldServer extends World implements org.bukkit.BlockChangeDelegate
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this.entitiesById = new IntHashMap();
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}
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- if (this.L == null) {
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- this.L = new HashSet();
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+ // Spigot start
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+ if (this.tickEntriesByChunk == null) {
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+ this.tickEntriesByChunk = new org.bukkit.craftbukkit.util.LongObjectHashMap<Set<NextTickListEntry>>();
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}
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- if (this.M == null) {
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- this.M = new TreeSet();
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+ if (this.tickEntryQueue == null) {
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+ this.tickEntryQueue = new TreeSet<NextTickListEntry>();
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}
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+ // Spigot end
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this.P = new org.bukkit.craftbukkit.CraftTravelAgent(this); // CraftBukkit
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this.scoreboard = new ScoreboardServer(minecraftserver);
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@@ -440,9 +443,16 @@ public class WorldServer extends World implements org.bukkit.BlockChangeDelegate
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}
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public boolean a(int i, int j, int k, int l) {
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- NextTickListEntry nextticklistentry = new NextTickListEntry(i, j, k, l);
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-
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- return this.U.contains(nextticklistentry);
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+ // Spigot start
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+ int te_cnt = this.pendingTickEntries.size();
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+ for (int idx = this.nextPendingTickEntry; idx < te_cnt; idx++) {
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+ NextTickListEntry ent = this.pendingTickEntries.get(idx);
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+ if ((ent.a == i) && (ent.b == j) && (ent.c == k) && Block.b(ent.d, l)) {
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+ return true;
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+ }
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+ }
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+ return false;
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+ // Spigot end
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}
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public void a(int i, int j, int k, int l, int i1) {
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@@ -476,10 +486,9 @@ public class WorldServer extends World implements org.bukkit.BlockChangeDelegate
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nextticklistentry.a(j1);
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}
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- if (!this.L.contains(nextticklistentry)) {
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- this.L.add(nextticklistentry);
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- this.M.add(nextticklistentry);
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- }
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+ // Spigot start
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+ addNextTickIfNeeded(nextticklistentry);
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+ // Spigot end
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}
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}
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@@ -491,10 +500,9 @@ public class WorldServer extends World implements org.bukkit.BlockChangeDelegate
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nextticklistentry.a((long) i1 + this.worldData.getTime());
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}
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- if (!this.L.contains(nextticklistentry)) {
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- this.L.add(nextticklistentry);
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- this.M.add(nextticklistentry);
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- }
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+ // Spigot start
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+ addNextTickIfNeeded(nextticklistentry);
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+ // Spigot end
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}
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public void tickEntities() {
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@@ -514,11 +522,12 @@ public class WorldServer extends World implements org.bukkit.BlockChangeDelegate
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}
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public boolean a(boolean flag) {
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- int i = this.M.size();
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+ // Spigot start
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+ int i = this.tickEntryQueue.size();
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- if (i != this.L.size()) {
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- throw new IllegalStateException("TickNextTick list out of synch");
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- } else {
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+ this.nextPendingTickEntry = 0;
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+ {
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+ // Spigot end
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if (i > 1000) {
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// CraftBukkit start - If the server has too much to process over time, try to alleviate that
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if (i > 20 * 1000) {
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@@ -534,23 +543,24 @@ public class WorldServer extends World implements org.bukkit.BlockChangeDelegate
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NextTickListEntry nextticklistentry;
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for (int j = 0; j < i; ++j) {
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- nextticklistentry = (NextTickListEntry) this.M.first();
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+ nextticklistentry = (NextTickListEntry) this.tickEntryQueue.first(); // Spigot
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if (!flag && nextticklistentry.e > this.worldData.getTime()) {
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break;
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}
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- this.M.remove(nextticklistentry);
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- this.L.remove(nextticklistentry);
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- this.U.add(nextticklistentry);
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+ // Spigot start
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+ this.removeNextTickIfNeeded(nextticklistentry);
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+ this.pendingTickEntries.add(nextticklistentry);
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+ // Spigot end
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}
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this.methodProfiler.b();
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this.methodProfiler.a("ticking");
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- Iterator iterator = this.U.iterator();
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-
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- while (iterator.hasNext()) {
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- nextticklistentry = (NextTickListEntry) iterator.next();
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- iterator.remove();
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+ // Spigot start
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+ for (int j = 0, te_cnt = this.pendingTickEntries.size(); j < te_cnt; j++) {
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+ nextticklistentry = pendingTickEntries.get(j);
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+ this.nextPendingTickEntry = j + 1; // treat this as dequeued
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+ // Spigot end
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byte b0 = 0;
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if (this.e(nextticklistentry.a - b0, nextticklistentry.b - b0, nextticklistentry.c - b0, nextticklistentry.a + b0, nextticklistentry.b + b0, nextticklistentry.c + b0)) {
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@@ -581,52 +591,18 @@ public class WorldServer extends World implements org.bukkit.BlockChangeDelegate
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}
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this.methodProfiler.b();
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- this.U.clear();
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- return !this.M.isEmpty();
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- }
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+ // Spigot start
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+ this.pendingTickEntries.clear();
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+ this.nextPendingTickEntry = 0;
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+ return !this.tickEntryQueue.isEmpty();
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+ // Spigot end
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+ }
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}
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public List a(Chunk chunk, boolean flag) {
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- ArrayList arraylist = null;
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- ChunkCoordIntPair chunkcoordintpair = chunk.l();
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- int i = (chunkcoordintpair.x << 4) - 2;
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- int j = i + 16 + 2;
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- int k = (chunkcoordintpair.z << 4) - 2;
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- int l = k + 16 + 2;
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-
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- for (int i1 = 0; i1 < 2; ++i1) {
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- Iterator iterator;
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-
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- if (i1 == 0) {
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- iterator = this.M.iterator();
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- } else {
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- iterator = this.U.iterator();
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- /* CraftBukkit start - Comment out debug spam
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- if (!this.U.isEmpty()) {
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- System.out.println(this.U.size());
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- }
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- // CraftBukkit end */
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- }
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-
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- while (iterator.hasNext()) {
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- NextTickListEntry nextticklistentry = (NextTickListEntry) iterator.next();
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-
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- if (nextticklistentry.a >= i && nextticklistentry.a < j && nextticklistentry.c >= k && nextticklistentry.c < l) {
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- if (flag) {
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- this.L.remove(nextticklistentry);
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- iterator.remove();
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- }
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-
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- if (arraylist == null) {
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- arraylist = new ArrayList();
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- }
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-
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- arraylist.add(nextticklistentry);
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- }
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- }
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- }
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-
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- return arraylist;
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+ // Spigot start
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+ return this.getNextTickEntriesForChunk(chunk, flag);
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+ // Spigot end
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}
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/* CraftBukkit start - We prevent spawning in general, so this butchering is not needed
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@@ -712,13 +688,15 @@ public class WorldServer extends World implements org.bukkit.BlockChangeDelegate
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this.entitiesById = new IntHashMap();
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}
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- if (this.L == null) {
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- this.L = new HashSet();
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+ // Spigot start
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+ if (this.tickEntriesByChunk == null) {
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+ this.tickEntriesByChunk = new org.bukkit.craftbukkit.util.LongObjectHashMap<Set<NextTickListEntry>>();
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}
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- if (this.M == null) {
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- this.M = new TreeSet();
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+ if (this.tickEntryQueue == null) {
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+ this.tickEntryQueue = new TreeSet<NextTickListEntry>();
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}
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+ // Spigot end
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this.b(worldsettings);
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super.a(worldsettings);
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@@ -1005,4 +983,62 @@ public class WorldServer extends World implements org.bukkit.BlockChangeDelegate
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return this.setTypeIdAndData(x, y, z, typeId, data, 3);
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}
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// CraftBukkit end
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+ // Spigot start
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+ private void addNextTickIfNeeded(NextTickListEntry ent) {
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+ long coord = LongHash.toLong(ent.a >> 4, ent.c >> 4);
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+ Set<NextTickListEntry> chunkset = this.tickEntriesByChunk.get(coord);
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+ if (chunkset == null) {
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+ chunkset = new HashSet<NextTickListEntry>();
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+ this.tickEntriesByChunk.put(coord, chunkset);
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+ } else if (chunkset.contains(ent)) {
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+ return;
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+ }
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+ chunkset.add(ent);
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+ this.tickEntryQueue.add(ent);
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+ }
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+
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+ private void removeNextTickIfNeeded(NextTickListEntry ent) {
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+ long coord = LongHash.toLong(ent.a >> 4, ent.c >> 4);
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+ Set<NextTickListEntry> chunkset = this.tickEntriesByChunk.get(coord);
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+ if (chunkset != null) {
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+ chunkset.remove(ent);
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+ if (chunkset.isEmpty()) {
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+ this.tickEntriesByChunk.remove(coord);
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+ }
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+ }
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+ this.tickEntryQueue.remove(ent);
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+ }
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+
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+ private List<NextTickListEntry> getNextTickEntriesForChunk(Chunk chunk, boolean remove) {
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+ long coord = LongHash.toLong(chunk.x, chunk.z);
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+ Set<NextTickListEntry> chunkset = this.tickEntriesByChunk.get(coord);
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+ List<NextTickListEntry> list = null;
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+ if (chunkset != null) {
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+ list = new ArrayList<NextTickListEntry>(chunkset);
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+ if (remove) {
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+ this.tickEntriesByChunk.remove(coord);
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+ this.tickEntryQueue.removeAll(list);
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+ chunkset.clear();
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+ }
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+ }
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+ // See if any on list of ticks being processed now
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+ if (this.nextPendingTickEntry < this.pendingTickEntries.size()) {
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+ int xmin = (chunk.x << 4);
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+ int xmax = xmin + 16;
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+ int zmin = (chunk.z << 4);
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+ int zmax = zmin + 16;
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+ int te_cnt = this.pendingTickEntries.size();
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+ for (int i = this.nextPendingTickEntry; i < te_cnt; i++) {
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+ NextTickListEntry ent = this.pendingTickEntries.get(i);
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+ if ((ent.a >= xmin) && (ent.a < xmax) && (ent.c >= zmin) && (ent.c < zmax)) {
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+ if (list == null) {
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+ list = new ArrayList<NextTickListEntry>();
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+ }
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+ list.add(ent);
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+ }
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+ }
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+ }
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+ return list;
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+ }
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+ // Spigot end
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}
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--
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1.8.1.2
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