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Vanilla now loads the proper number of chunks for sending to players. So, we can finally match their behavior after all these years.
216 lines
12 KiB
Diff
216 lines
12 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Thu, 7 May 2020 05:48:54 -0700
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Subject: [PATCH] Optimise chunk tick iteration
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Use a dedicated list of entity ticking chunks to reduce the cost
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diff --git a/src/main/java/net/minecraft/server/level/ChunkHolder.java b/src/main/java/net/minecraft/server/level/ChunkHolder.java
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index 4164204ba80f68a768de0ed1721c6447b972a631..4ae1ba645d9fdc1eb6d5a3e4f8ceed9b4841e003 100644
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--- a/src/main/java/net/minecraft/server/level/ChunkHolder.java
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+++ b/src/main/java/net/minecraft/server/level/ChunkHolder.java
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@@ -84,6 +84,11 @@ public class ChunkHolder {
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this.playersInMobSpawnRange = this.chunkMap.playerMobSpawnMap.getObjectsInRange(key);
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this.playersInChunkTickRange = this.chunkMap.playerChunkTickRangeMap.getObjectsInRange(key);
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// Paper end - optimise anyPlayerCloseEnoughForSpawning
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+ // Paper start - optimise chunk tick iteration
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+ if (this.needsBroadcastChanges()) {
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+ this.chunkMap.needsChangeBroadcasting.add(this);
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+ }
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+ // Paper end - optimise chunk tick iteration
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}
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public void onChunkRemove() {
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@@ -91,6 +96,11 @@ public class ChunkHolder {
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this.playersInMobSpawnRange = null;
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this.playersInChunkTickRange = null;
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// Paper end - optimise anyPlayerCloseEnoughForSpawning
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+ // Paper start - optimise chunk tick iteration
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+ if (this.needsBroadcastChanges()) {
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+ this.chunkMap.needsChangeBroadcasting.remove(this);
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+ }
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+ // Paper end - optimise chunk tick iteration
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}
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// Paper end
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@@ -230,7 +240,7 @@ public class ChunkHolder {
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if (i < 0 || i >= this.changedBlocksPerSection.length) return; // CraftBukkit - SPIGOT-6086, SPIGOT-6296
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if (this.changedBlocksPerSection[i] == null) {
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- this.hasChangedSections = true;
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+ this.hasChangedSections = true; this.addToBroadcastMap(); // Paper - optimise chunk tick iteration
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this.changedBlocksPerSection[i] = new ShortOpenHashSet();
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}
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@@ -254,6 +264,7 @@ public class ChunkHolder {
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int k = this.lightEngine.getMaxLightSection();
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if (y >= j && y <= k) {
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+ this.addToBroadcastMap(); // Paper - optimise chunk tick iteration
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int l = y - j;
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if (lightType == LightLayer.SKY) {
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@@ -268,8 +279,19 @@ public class ChunkHolder {
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}
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}
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+ // Paper start - optimise chunk tick iteration
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+ public final boolean needsBroadcastChanges() {
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+ return this.hasChangedSections || !this.skyChangedLightSectionFilter.isEmpty() || !this.blockChangedLightSectionFilter.isEmpty();
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+ }
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+
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+ private void addToBroadcastMap() {
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+ org.spigotmc.AsyncCatcher.catchOp("ChunkHolder update");
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+ this.chunkMap.needsChangeBroadcasting.add(this);
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+ }
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+ // Paper end - optimise chunk tick iteration
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+
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public void broadcastChanges(LevelChunk chunk) {
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- if (this.hasChangedSections || !this.skyChangedLightSectionFilter.isEmpty() || !this.blockChangedLightSectionFilter.isEmpty()) {
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+ if (this.needsBroadcastChanges()) { // Paper - moved into above, other logic needs to call
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Level world = chunk.getLevel();
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List list;
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diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
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index 13df88938d9fe7471806d6a7ba7c00143d89b411..d9ef2a44e2e9f1ce32589638fad3d305dadb4cce 100644
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--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
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+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
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@@ -115,6 +115,8 @@ import org.bukkit.craftbukkit.generator.CustomChunkGenerator;
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import org.bukkit.entity.Player;
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// CraftBukkit end
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+import it.unimi.dsi.fastutil.objects.ReferenceOpenHashSet; // Paper
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+
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public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider {
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private static final byte CHUNK_TYPE_REPLACEABLE = -1;
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@@ -152,6 +154,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
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private final Queue<Runnable> unloadQueue;
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int viewDistance;
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public final com.destroystokyo.paper.util.misc.PlayerAreaMap playerMobDistanceMap; // Paper
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+ public final ReferenceOpenHashSet<ChunkHolder> needsChangeBroadcasting = new ReferenceOpenHashSet<>();
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// Paper - rewrite chunk system
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diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
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index 5c5fe2087a7617324ab8e18389e3ffa9ac413026..828de28f2777e2477a9c6545c8af96c4ca4e352b 100644
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--- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
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+++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
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@@ -48,6 +48,7 @@ import net.minecraft.world.level.levelgen.structure.templatesystem.StructureTemp
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import net.minecraft.world.level.storage.DimensionDataStorage;
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import net.minecraft.world.level.storage.LevelData;
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import net.minecraft.world.level.storage.LevelStorageSource;
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+import it.unimi.dsi.fastutil.objects.ReferenceOpenHashSet; // Paper
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public class ServerChunkCache extends ChunkSource {
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@@ -574,42 +575,59 @@ public class ServerChunkCache extends ChunkSource {
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this.lastSpawnState = spawnercreature_d;
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gameprofilerfiller.popPush("filteringLoadedChunks");
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- List<ServerChunkCache.ChunkAndHolder> list = Lists.newArrayListWithCapacity(l);
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- Iterator iterator = this.chunkMap.getChunks().iterator();
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+ // Paper - moved down
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this.level.timings.chunkTicks.startTiming(); // Paper
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- while (iterator.hasNext()) {
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- ChunkHolder playerchunk = (ChunkHolder) iterator.next();
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- LevelChunk chunk = playerchunk.getTickingChunk();
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-
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- if (chunk != null) {
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- list.add(new ServerChunkCache.ChunkAndHolder(chunk, playerchunk));
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- }
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- }
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+ // Paper - moved down
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gameprofilerfiller.popPush("spawnAndTick");
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boolean flag2 = this.level.getGameRules().getBoolean(GameRules.RULE_DOMOBSPAWNING) && !this.level.players().isEmpty(); // CraftBukkit
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- Collections.shuffle(list);
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+ // Paper - only shuffle if per-player mob spawning is disabled
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// Paper - moved natural spawn event up
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- Iterator iterator1 = list.iterator();
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+ // Paper start - optimise chunk tick iteratio
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+ Iterator<LevelChunk> iterator1;
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+ if (this.level.paperConfig().entities.spawning.perPlayerMobSpawns) {
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+ iterator1 = this.entityTickingChunks.iterator();
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+ } else {
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+ iterator1 = this.entityTickingChunks.unsafeIterator();
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+ List<LevelChunk> shuffled = Lists.newArrayListWithCapacity(this.entityTickingChunks.size());
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+ while (iterator1.hasNext()) {
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+ shuffled.add(iterator1.next());
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+ }
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+ Collections.shuffle(shuffled);
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+ iterator1 = shuffled.iterator();
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+ }
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+ try {
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while (iterator1.hasNext()) {
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- ServerChunkCache.ChunkAndHolder chunkproviderserver_a = (ServerChunkCache.ChunkAndHolder) iterator1.next();
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- LevelChunk chunk1 = chunkproviderserver_a.chunk;
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+ LevelChunk chunk1 = iterator1.next();
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+ ChunkHolder holder = chunk1.playerChunk;
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+ if (holder != null) {
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+ // Paper - move down
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+ // Paper end - optimise chunk tick iteration
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ChunkPos chunkcoordintpair = chunk1.getPos();
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- if (this.level.isNaturalSpawningAllowed(chunkcoordintpair) && this.chunkMap.anyPlayerCloseEnoughForSpawning(chunkproviderserver_a.holder, chunkcoordintpair, false)) { // Paper - optimise anyPlayerCloseEnoughForSpawning
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+ if ((true || this.level.isNaturalSpawningAllowed(chunkcoordintpair)) && this.chunkMap.anyPlayerCloseEnoughForSpawning(holder, chunkcoordintpair, false)) { // Paper - optimise anyPlayerCloseEnoughForSpawning // Paper - the chunk is known ticking
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chunk1.incrementInhabitedTime(j);
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- if (flag2 && (this.spawnEnemies || this.spawnFriendlies) && this.level.getWorldBorder().isWithinBounds(chunkcoordintpair) && this.chunkMap.anyPlayerCloseEnoughForSpawning(chunkproviderserver_a.holder, chunkcoordintpair, true)) { // Spigot // Paper - optimise anyPlayerCloseEnoughForSpawning
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+ if (flag2 && (this.spawnEnemies || this.spawnFriendlies) && this.level.getWorldBorder().isWithinBounds(chunkcoordintpair) && this.chunkMap.anyPlayerCloseEnoughForSpawning(holder, chunkcoordintpair, true)) { // Spigot // Paper - optimise anyPlayerCloseEnoughForSpawning & optimise chunk tick iteration
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NaturalSpawner.spawnForChunk(this.level, chunk1, spawnercreature_d, this.spawnFriendlies, this.spawnEnemies, flag1);
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}
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- if (this.level.shouldTickBlocksAt(chunkcoordintpair.toLong())) {
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+ if (true || this.level.shouldTickBlocksAt(chunkcoordintpair.toLong())) { // Paper - the chunk is known ticking
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this.level.tickChunk(chunk1, k);
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}
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}
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+ // Paper start - optimise chunk tick iteration
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+ }
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+ }
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+
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+ } finally {
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+ if (iterator1 instanceof io.papermc.paper.util.maplist.IteratorSafeOrderedReferenceSet.Iterator safeIterator) {
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+ safeIterator.finishedIterating();
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+ }
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}
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+ // Paper end - optimise chunk tick iteration
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this.level.timings.chunkTicks.stopTiming(); // Paper
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gameprofilerfiller.popPush("customSpawners");
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if (flag2) {
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@@ -617,15 +635,24 @@ public class ServerChunkCache extends ChunkSource {
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this.level.tickCustomSpawners(this.spawnEnemies, this.spawnFriendlies);
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} // Paper - timings
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}
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-
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- gameprofilerfiller.popPush("broadcast");
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- list.forEach((chunkproviderserver_a1) -> {
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- this.level.timings.broadcastChunkUpdates.startTiming(); // Paper - timing
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- chunkproviderserver_a1.holder.broadcastChanges(chunkproviderserver_a1.chunk);
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- this.level.timings.broadcastChunkUpdates.stopTiming(); // Paper - timing
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- });
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gameprofilerfiller.pop();
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+ // Paper start - use set of chunks requiring updates, rather than iterating every single one loaded
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+ gameprofilerfiller.popPush("broadcast");
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+ this.level.timings.broadcastChunkUpdates.startTiming(); // Paper - timing
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+ if (!this.chunkMap.needsChangeBroadcasting.isEmpty()) {
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+ ReferenceOpenHashSet<ChunkHolder> copy = this.chunkMap.needsChangeBroadcasting.clone();
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+ this.chunkMap.needsChangeBroadcasting.clear();
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+ for (ChunkHolder holder : copy) {
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+ holder.broadcastChanges(holder.getFullChunkNowUnchecked()); // LevelChunks are NEVER unloaded
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+ if (holder.needsBroadcastChanges()) {
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+ // I DON'T want to KNOW what DUMB plugins might be doing.
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+ this.chunkMap.needsChangeBroadcasting.add(holder);
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+ }
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+ }
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+ }
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+ this.level.timings.broadcastChunkUpdates.stopTiming(); // Paper - timing
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gameprofilerfiller.pop();
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+ // Paper end - use set of chunks requiring updates, rather than iterating every single one loaded
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this.chunkMap.tick();
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}
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}
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