From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Spottedleaf Date: Sat, 23 Sep 2023 21:36:36 -0700 Subject: [PATCH] Optimise chunk tick iteration When per-player mob spawning is enabled we do not need to randomly shuffle the chunk list. Additionally, we can use the NearbyPlayers class to quickly retrieve nearby players instead of possible searching all players on the server. diff --git a/src/main/java/io/papermc/paper/util/player/NearbyPlayers.java b/src/main/java/io/papermc/paper/util/player/NearbyPlayers.java index c3ce8a42dddd76b7189ad5685b23f9d9f8ccadb3..f164256d59b761264876ca0c85f812d101bfd5de 100644 --- a/src/main/java/io/papermc/paper/util/player/NearbyPlayers.java +++ b/src/main/java/io/papermc/paper/util/player/NearbyPlayers.java @@ -17,7 +17,8 @@ public final class NearbyPlayers { GENERAL_SMALL, GENERAL_REALLY_SMALL, TICK_VIEW_DISTANCE, - VIEW_DISTANCE; + VIEW_DISTANCE, // Paper - optimise chunk iteration + SPAWN_RANGE, // Paper - optimise chunk iteration } private static final NearbyMapType[] MOB_TYPES = NearbyMapType.values(); @@ -26,10 +27,12 @@ public final class NearbyPlayers { private static final int GENERAL_AREA_VIEW_DISTANCE = 33; private static final int GENERAL_SMALL_VIEW_DISTANCE = 10; private static final int GENERAL_REALLY_SMALL_VIEW_DISTANCE = 3; + private static final int SPAWN_RANGE_VIEW_DISTANCE = net.minecraft.server.level.DistanceManager.MOB_SPAWN_RANGE; // Paper - optimise chunk iteration public static final int GENERAL_AREA_VIEW_DISTANCE_BLOCKS = (GENERAL_AREA_VIEW_DISTANCE << 4); public static final int GENERAL_SMALL_AREA_VIEW_DISTANCE_BLOCKS = (GENERAL_SMALL_VIEW_DISTANCE << 4); public static final int GENERAL_REALLY_SMALL_AREA_VIEW_DISTANCE_BLOCKS = (GENERAL_REALLY_SMALL_VIEW_DISTANCE << 4); + public static final int SPAWN_RANGE_VIEW_DISTANCE_BLOCKS = (SPAWN_RANGE_VIEW_DISTANCE << 4); // Paper - optimise chunk iteration private final ServerLevel world; private final Reference2ReferenceOpenHashMap players = new Reference2ReferenceOpenHashMap<>(); @@ -80,6 +83,7 @@ public final class NearbyPlayers { players[NearbyMapType.GENERAL_REALLY_SMALL.ordinal()].update(chunk.x, chunk.z, GENERAL_REALLY_SMALL_VIEW_DISTANCE); players[NearbyMapType.TICK_VIEW_DISTANCE.ordinal()].update(chunk.x, chunk.z, ChunkSystem.getTickViewDistance(player)); players[NearbyMapType.VIEW_DISTANCE.ordinal()].update(chunk.x, chunk.z, ChunkSystem.getLoadViewDistance(player)); + players[NearbyMapType.SPAWN_RANGE.ordinal()].update(chunk.x, chunk.z, SPAWN_RANGE_VIEW_DISTANCE); // Paper - optimise chunk iteration } public TrackedChunk getChunk(final ChunkPos pos) { diff --git a/src/main/java/net/minecraft/server/level/ChunkHolder.java b/src/main/java/net/minecraft/server/level/ChunkHolder.java index 2b998bdbe49bf8211b755e0eb7c1bf13ac280eab..627a88ec8c3b215b19b55a6d461c8754b4fcd1e8 100644 --- a/src/main/java/net/minecraft/server/level/ChunkHolder.java +++ b/src/main/java/net/minecraft/server/level/ChunkHolder.java @@ -79,11 +79,19 @@ public class ChunkHolder { // Paper start public void onChunkAdd() { - + // Paper start - optimise chunk tick iteration + if (this.needsBroadcastChanges()) { + this.chunkMap.needsChangeBroadcasting.add(this); + } + // Paper end - optimise chunk tick iteration } public void onChunkRemove() { - + // Paper start - optimise chunk tick iteration + if (this.needsBroadcastChanges()) { + this.chunkMap.needsChangeBroadcasting.remove(this); + } + // Paper end - optimise chunk tick iteration } // Paper end @@ -230,7 +238,7 @@ public class ChunkHolder { if (i < 0 || i >= this.changedBlocksPerSection.length) return; // CraftBukkit - SPIGOT-6086, SPIGOT-6296 if (this.changedBlocksPerSection[i] == null) { - this.hasChangedSections = true; + this.hasChangedSections = true; this.addToBroadcastMap(); // Paper - optimise chunk tick iteration this.changedBlocksPerSection[i] = new ShortOpenHashSet(); } @@ -254,6 +262,7 @@ public class ChunkHolder { int k = this.lightEngine.getMaxLightSection(); if (y >= j && y <= k) { + this.addToBroadcastMap(); // Paper - optimise chunk tick iteration int l = y - j; if (lightType == LightLayer.SKY) { @@ -268,8 +277,19 @@ public class ChunkHolder { } } + // Paper start - optimise chunk tick iteration + public final boolean needsBroadcastChanges() { + return this.hasChangedSections || !this.skyChangedLightSectionFilter.isEmpty() || !this.blockChangedLightSectionFilter.isEmpty(); + } + + private void addToBroadcastMap() { + io.papermc.paper.util.TickThread.ensureTickThread(this.chunkMap.level, this.pos, "Asynchronous ChunkHolder update is not allowed"); + this.chunkMap.needsChangeBroadcasting.add(this); + } + // Paper end - optimise chunk tick iteration + public void broadcastChanges(LevelChunk chunk) { - if (this.hasChangedSections || !this.skyChangedLightSectionFilter.isEmpty() || !this.blockChangedLightSectionFilter.isEmpty()) { + if (this.needsBroadcastChanges()) { // Paper - optimise chunk tick iteration; moved into above, other logic needs to call Level world = chunk.getLevel(); List list; diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java index 815fb04fb2d14d0cea14a2b3509e81b383bbdbda..ccf0308855d6549d70cf010fc57b76abfbe93f26 100644 --- a/src/main/java/net/minecraft/server/level/ChunkMap.java +++ b/src/main/java/net/minecraft/server/level/ChunkMap.java @@ -191,6 +191,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider this.playerEntityTrackerTrackMaps[i].remove(player); } // Paper end - use distance map to optimise tracker + this.playerMobSpawnMap.remove(player); // Paper - optimise chunk tick iteration } void updateMaps(ServerPlayer player) { @@ -240,6 +241,10 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider } public final io.papermc.paper.util.player.NearbyPlayers nearbyPlayers; // Paper end + // Paper start - optimise chunk tick iteration + public final it.unimi.dsi.fastutil.objects.ReferenceOpenHashSet needsChangeBroadcasting = new it.unimi.dsi.fastutil.objects.ReferenceOpenHashSet<>(); + public final com.destroystokyo.paper.util.misc.PlayerAreaMap playerMobSpawnMap = new com.destroystokyo.paper.util.misc.PlayerAreaMap(this.pooledLinkedPlayerHashSets); + // Paper end - optimise chunk tick iteration public ChunkMap(ServerLevel world, LevelStorageSource.LevelStorageAccess session, DataFixer dataFixer, StructureTemplateManager structureTemplateManager, Executor executor, BlockableEventLoop mainThreadExecutor, LightChunkGetter chunkProvider, ChunkGenerator chunkGenerator, ChunkProgressListener worldGenerationProgressListener, ChunkStatusUpdateListener chunkStatusChangeListener, Supplier persistentStateManagerFactory, int viewDistance, boolean dsync) { super(session.getDimensionPath(world.dimension()).resolve("region"), dataFixer, dsync); @@ -409,7 +414,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider } // Paper end - Optional per player mob spawns - private static double euclideanDistanceSquared(ChunkPos pos, Entity entity) { + public static double euclideanDistanceSquared(ChunkPos pos, Entity entity) { // Paper - optimise chunk iteration; public double d0 = (double) SectionPos.sectionToBlockCoord(pos.x, 8); double d1 = (double) SectionPos.sectionToBlockCoord(pos.z, 8); double d2 = d0 - entity.getX(); diff --git a/src/main/java/net/minecraft/server/level/DistanceManager.java b/src/main/java/net/minecraft/server/level/DistanceManager.java index c80a625f7289e3bb33c6851d2072957e153ca1fb..7c425ac50c83757b66a2178bc19d4c920b82f12f 100644 --- a/src/main/java/net/minecraft/server/level/DistanceManager.java +++ b/src/main/java/net/minecraft/server/level/DistanceManager.java @@ -50,7 +50,7 @@ public abstract class DistanceManager { private static final int INITIAL_TICKET_LIST_CAPACITY = 4; final Long2ObjectMap> playersPerChunk = new Long2ObjectOpenHashMap(); // Paper - rewrite chunk system - private final DistanceManager.FixedPlayerDistanceChunkTracker naturalSpawnChunkCounter = new DistanceManager.FixedPlayerDistanceChunkTracker(8); + public static final int MOB_SPAWN_RANGE = 8; //private final DistanceManager.FixedPlayerDistanceChunkTracker naturalSpawnChunkCounter = new DistanceManager.FixedPlayerDistanceChunkTracker(8); // Paper - optimise chunk tick iteration // Paper - rewrite chunk system private final ChunkMap chunkMap; // Paper @@ -135,7 +135,7 @@ public abstract class DistanceManager { long i = chunkcoordintpair.toLong(); // Paper - no longer used - this.naturalSpawnChunkCounter.update(i, 0, true); + //this.naturalSpawnChunkCounter.update(i, 0, true); // Paper - optimise chunk tick iteration //this.playerTicketManager.update(i, 0, true); // Paper - no longer used //this.tickingTicketsTracker.addTicket(TicketType.PLAYER, chunkcoordintpair, this.getPlayerTicketLevel(), chunkcoordintpair); // Paper - no longer used } @@ -149,7 +149,7 @@ public abstract class DistanceManager { if (objectset != null) objectset.remove(player); // Paper - some state corruption happens here, don't crash, clean up gracefully if (objectset == null || objectset.isEmpty()) { // Paper this.playersPerChunk.remove(i); - this.naturalSpawnChunkCounter.update(i, Integer.MAX_VALUE, false); + //this.naturalSpawnChunkCounter.update(i, Integer.MAX_VALUE, false); // Paper - optimise chunk tick iteration //this.playerTicketManager.update(i, Integer.MAX_VALUE, false); // Paper - no longer used //this.tickingTicketsTracker.removeTicket(TicketType.PLAYER, chunkcoordintpair, this.getPlayerTicketLevel(), chunkcoordintpair); // Paper - no longer used } @@ -191,13 +191,11 @@ public abstract class DistanceManager { } public int getNaturalSpawnChunkCount() { - this.naturalSpawnChunkCounter.runAllUpdates(); - return this.naturalSpawnChunkCounter.chunks.size(); + return this.chunkMap.playerMobSpawnMap.size(); // Paper - optimise chunk tick iteration } public boolean hasPlayersNearby(long chunkPos) { - this.naturalSpawnChunkCounter.runAllUpdates(); - return this.naturalSpawnChunkCounter.chunks.containsKey(chunkPos); + return this.chunkMap.playerMobSpawnMap.getObjectsInRange(chunkPos) != null; // Paper - optimise chunk tick iteration } public String getDebugStatus() { diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java index e3618e76f9ce4d585287d0754193c2793ba1e492..65a20974428ae1c0be2022d997234a16dc281292 100644 --- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java +++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java @@ -516,18 +516,10 @@ public class ServerChunkCache extends ChunkSource { gameprofilerfiller.push("pollingChunks"); gameprofilerfiller.push("filteringLoadedChunks"); - List list = Lists.newArrayListWithCapacity(this.chunkMap.size()); - Iterator iterator = this.chunkMap.getChunks().iterator(); + // Paper - optimise chunk tick iteration if (this.level.getServer().tickRateManager().runsNormally()) this.level.timings.chunkTicks.startTiming(); // Paper - while (iterator.hasNext()) { - ChunkHolder playerchunk = (ChunkHolder) iterator.next(); - LevelChunk chunk = playerchunk.getTickingChunk(); - - if (chunk != null) { - list.add(new ServerChunkCache.ChunkAndHolder(chunk, playerchunk)); - } - } + // Paper - optimise chunk tick iteration if (this.level.getServer().tickRateManager().runsNormally()) { gameprofilerfiller.popPush("naturalSpawnCount"); @@ -562,38 +554,109 @@ public class ServerChunkCache extends ChunkSource { gameprofilerfiller.popPush("spawnAndTick"); boolean flag = this.level.getGameRules().getBoolean(GameRules.RULE_DOMOBSPAWNING) && !this.level.players().isEmpty(); // CraftBukkit - Util.shuffle(list, this.level.random); - // Paper start - PlayerNaturallySpawnCreaturesEvent - int chunkRange = level.spigotConfig.mobSpawnRange; - chunkRange = (chunkRange > level.spigotConfig.viewDistance) ? (byte) level.spigotConfig.viewDistance : chunkRange; - chunkRange = Math.min(chunkRange, 8); - for (ServerPlayer entityPlayer : this.level.players()) { - entityPlayer.playerNaturallySpawnedEvent = new com.destroystokyo.paper.event.entity.PlayerNaturallySpawnCreaturesEvent(entityPlayer.getBukkitEntity(), (byte) chunkRange); - entityPlayer.playerNaturallySpawnedEvent.callEvent(); + // Paper start - optimise chunk tick iteration + ChunkMap playerChunkMap = this.chunkMap; + for (ServerPlayer player : this.level.players) { + if (!player.affectsSpawning || player.isSpectator()) { + playerChunkMap.playerMobSpawnMap.remove(player); + player.playerNaturallySpawnedEvent = null; + player.lastEntitySpawnRadiusSquared = -1.0; + continue; + } + + int viewDistance = io.papermc.paper.chunk.system.ChunkSystem.getTickViewDistance(player); + + // copied and modified from isOutisdeRange + int chunkRange = (int)level.spigotConfig.mobSpawnRange; + chunkRange = (chunkRange > viewDistance) ? viewDistance : chunkRange; + chunkRange = (chunkRange > DistanceManager.MOB_SPAWN_RANGE) ? DistanceManager.MOB_SPAWN_RANGE : chunkRange; + + com.destroystokyo.paper.event.entity.PlayerNaturallySpawnCreaturesEvent event = new com.destroystokyo.paper.event.entity.PlayerNaturallySpawnCreaturesEvent(player.getBukkitEntity(), (byte)chunkRange); + event.callEvent(); + if (event.isCancelled() || event.getSpawnRadius() < 0) { + playerChunkMap.playerMobSpawnMap.remove(player); + player.playerNaturallySpawnedEvent = null; + player.lastEntitySpawnRadiusSquared = -1.0; + continue; + } + + int range = Math.min(event.getSpawnRadius(), DistanceManager.MOB_SPAWN_RANGE); // limit to max spawn range + int chunkX = io.papermc.paper.util.CoordinateUtils.getChunkCoordinate(player.getX()); + int chunkZ = io.papermc.paper.util.CoordinateUtils.getChunkCoordinate(player.getZ()); + + playerChunkMap.playerMobSpawnMap.addOrUpdate(player, chunkX, chunkZ, range); + player.lastEntitySpawnRadiusSquared = (double)((range << 4) * (range << 4)); // used in anyPlayerCloseEnoughForSpawning + player.playerNaturallySpawnedEvent = event; } - // Paper end - PlayerNaturallySpawnCreaturesEvent + // Paper end - optimise chunk tick iteration int l = this.level.getGameRules().getInt(GameRules.RULE_RANDOMTICKING); boolean flag1 = this.level.ticksPerSpawnCategory.getLong(org.bukkit.entity.SpawnCategory.ANIMAL) != 0L && this.level.getLevelData().getGameTime() % this.level.ticksPerSpawnCategory.getLong(org.bukkit.entity.SpawnCategory.ANIMAL) == 0L; // CraftBukkit - Iterator iterator1 = list.iterator(); + // Paper - optimise chunk tick iteration int chunksTicked = 0; // Paper - while (iterator1.hasNext()) { - ServerChunkCache.ChunkAndHolder chunkproviderserver_a = (ServerChunkCache.ChunkAndHolder) iterator1.next(); - LevelChunk chunk1 = chunkproviderserver_a.chunk; + // Paper start - optimise chunk tick iteration + io.papermc.paper.util.player.NearbyPlayers nearbyPlayers = this.chunkMap.getNearbyPlayers(); // Paper - optimise chunk tick iteration + Iterator chunkIterator; + if (this.level.paperConfig().entities.spawning.perPlayerMobSpawns) { + chunkIterator = this.tickingChunks.iterator(); + } else { + chunkIterator = this.tickingChunks.unsafeIterator(); + List shuffled = Lists.newArrayListWithCapacity(this.tickingChunks.size()); + while (chunkIterator.hasNext()) { + shuffled.add(chunkIterator.next()); + } + Util.shuffle(shuffled, this.level.random); + chunkIterator = shuffled.iterator(); + } + try { + // Paper end - optimise chunk tick iteration + while (chunkIterator.hasNext()) { + LevelChunk chunk1 = chunkIterator.next(); + // Paper end - optimise chunk tick iteration ChunkPos chunkcoordintpair = chunk1.getPos(); - if (this.level.isNaturalSpawningAllowed(chunkcoordintpair) && this.chunkMap.anyPlayerCloseEnoughForSpawning(chunkcoordintpair)) { + // Paper start - optimise chunk tick iteration + com.destroystokyo.paper.util.maplist.ReferenceList playersNearby + = nearbyPlayers.getPlayers(chunkcoordintpair, io.papermc.paper.util.player.NearbyPlayers.NearbyMapType.SPAWN_RANGE); + if (playersNearby == null) { + continue; + } + Object[] rawData = playersNearby.getRawData(); + boolean spawn = false; + boolean tick = false; + for (int itr = 0, len = playersNearby.size(); itr < len; ++itr) { + ServerPlayer player = (ServerPlayer)rawData[itr]; + if (player.isSpectator()) { + continue; + } + + double distance = ChunkMap.euclideanDistanceSquared(chunkcoordintpair, player); + spawn |= player.lastEntitySpawnRadiusSquared >= distance; + tick |= ((double)io.papermc.paper.util.player.NearbyPlayers.SPAWN_RANGE_VIEW_DISTANCE_BLOCKS) * ((double)io.papermc.paper.util.player.NearbyPlayers.SPAWN_RANGE_VIEW_DISTANCE_BLOCKS) >= distance; + if (spawn & tick) { + break; + } + } + if (tick && chunk1.chunkStatus.isOrAfter(net.minecraft.server.level.FullChunkStatus.ENTITY_TICKING)) { + // Paper end - optimise chunk tick iteration chunk1.incrementInhabitedTime(j); - if (flag && (this.spawnEnemies || this.spawnFriendlies) && this.level.getWorldBorder().isWithinBounds(chunkcoordintpair) && this.chunkMap.anyPlayerCloseEnoughForSpawning(chunkcoordintpair, true)) { // Spigot + if (spawn && flag && (this.spawnEnemies || this.spawnFriendlies) && this.level.getWorldBorder().isWithinBounds(chunkcoordintpair)) { // Spigot // Paper - optimise chunk tick iteration NaturalSpawner.spawnForChunk(this.level, chunk1, spawnercreature_d, this.spawnFriendlies, this.spawnEnemies, flag1); } - if (this.level.shouldTickBlocksAt(chunkcoordintpair.toLong())) { + if (true || this.level.shouldTickBlocksAt(chunkcoordintpair.toLong())) { // Paper - optimise chunk tick iteration this.level.tickChunk(chunk1, l); if ((chunksTicked++ & 1) == 0) net.minecraft.server.MinecraftServer.getServer().executeMidTickTasks(); // Paper } } } + // Paper start - optimise chunk tick iteration + } finally { + if (chunkIterator instanceof io.papermc.paper.util.maplist.IteratorSafeOrderedReferenceSet.Iterator safeIterator) { + safeIterator.finishedIterating(); + } + } + // Paper end - optimise chunk tick iteration this.level.timings.chunkTicks.stopTiming(); // Paper gameprofilerfiller.popPush("customSpawners"); @@ -605,11 +668,23 @@ public class ServerChunkCache extends ChunkSource { } gameprofilerfiller.popPush("broadcast"); - list.forEach((chunkproviderserver_a1) -> { + // Paper - optimise chunk tick iteration this.level.timings.broadcastChunkUpdates.startTiming(); // Paper - timing - chunkproviderserver_a1.holder.broadcastChanges(chunkproviderserver_a1.chunk); + // Paper start - optimise chunk tick iteration + if (!this.chunkMap.needsChangeBroadcasting.isEmpty()) { + it.unimi.dsi.fastutil.objects.ReferenceOpenHashSet copy = this.chunkMap.needsChangeBroadcasting.clone(); + this.chunkMap.needsChangeBroadcasting.clear(); + for (ChunkHolder holder : copy) { + holder.broadcastChanges(holder.getFullChunkNowUnchecked()); // LevelChunks are NEVER unloaded + if (holder.needsBroadcastChanges()) { + // I DON'T want to KNOW what DUMB plugins might be doing. + this.chunkMap.needsChangeBroadcasting.add(holder); + } + } + } + // Paper end - optimise chunk tick iteration this.level.timings.broadcastChunkUpdates.stopTiming(); // Paper - timing - }); + // Paper - optimise chunk tick iteration gameprofilerfiller.pop(); gameprofilerfiller.pop(); } diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java index a78ee295d14e0f4543b5bbdb7b72c6383a4fb23a..40632eabeb297f2cb2206d18cba7476bfb9f7ae8 100644 --- a/src/main/java/net/minecraft/server/level/ServerPlayer.java +++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java @@ -325,6 +325,9 @@ public class ServerPlayer extends Player { }); } // Paper end - replace player chunk loader + // Paper start - optimise chunk tick iteration + public double lastEntitySpawnRadiusSquared = -1.0; + // Paper end - optimise chunk tick iteration public ServerPlayer(MinecraftServer server, ServerLevel world, GameProfile profile, ClientInformation clientOptions) { super(world, world.getSharedSpawnPos(), world.getSharedSpawnAngle(), profile);