380 Zeilen
17 KiB
Diff
380 Zeilen
17 KiB
Diff
From 169cff9d2e106cf7ab54e52714a6731053f2cbfa Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Sat, 15 Jun 2019 08:54:33 -0700
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Subject: [PATCH] Fix World#isChunkGenerated calls
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Optimize World#loadChunk() too
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This patch also adds a chunk status cache on region files (note that
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its only purpose is to cache the status on DISK)
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diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
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index 535c2258b..e0bd03b3b 100644
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--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
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+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
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@@ -28,7 +28,7 @@ public class ChunkProviderServer extends IChunkProvider {
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private final WorldServer world;
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private final Thread serverThread;
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private final LightEngineThreaded lightEngine;
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- private final ChunkProviderServer.a serverThreadQueue;
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+ public final ChunkProviderServer.a serverThreadQueue; // Paper private -> public
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public final PlayerChunkMap playerChunkMap;
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private final WorldPersistentData worldPersistentData;
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private long lastTickTime;
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@@ -109,6 +109,21 @@ public class ChunkProviderServer extends IChunkProvider {
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return playerChunk.getFullChunk();
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}
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+
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+ @Nullable
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+ public IChunkAccess getChunkAtImmediately(int x, int z) {
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+ long k = ChunkCoordIntPair.pair(x, z);
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+
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+ // Note: Bypass cache to make this MT-Safe
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+
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+ PlayerChunk playerChunk = this.getChunk(k);
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+ if (playerChunk == null) {
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+ return null;
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+ }
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+
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+ return playerChunk.getAvailableChunkNow();
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+
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+ }
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// Paper end
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@Nullable
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diff --git a/src/main/java/net/minecraft/server/ChunkRegionLoader.java b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
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index e778c2e85..73f93e494 100644
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--- a/src/main/java/net/minecraft/server/ChunkRegionLoader.java
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+++ b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
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@@ -410,6 +410,17 @@ public class ChunkRegionLoader {
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return nbttagcompound;
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}
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+ // Paper start
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+ public static ChunkStatus getStatus(NBTTagCompound compound) {
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+ if (compound == null) {
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+ return null;
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+ }
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+
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+ // Note: Copied from below
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+ return ChunkStatus.getStatus(compound.getCompound("Level").getString("Status"));
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+ }
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+ // Paper end
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+
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public static ChunkStatus.Type a(@Nullable NBTTagCompound nbttagcompound) {
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if (nbttagcompound != null) {
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ChunkStatus chunkstatus = ChunkStatus.a(nbttagcompound.getCompound("Level").getString("Status"));
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diff --git a/src/main/java/net/minecraft/server/ChunkStatus.java b/src/main/java/net/minecraft/server/ChunkStatus.java
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index dd1822d6f..e324989b4 100644
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--- a/src/main/java/net/minecraft/server/ChunkStatus.java
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+++ b/src/main/java/net/minecraft/server/ChunkStatus.java
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@@ -176,6 +176,7 @@ public class ChunkStatus {
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return this.s;
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}
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+ public ChunkStatus getPreviousStatus() { return this.e(); } // Paper - OBFHELPER
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public ChunkStatus e() {
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return this.u;
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}
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@@ -196,6 +197,17 @@ public class ChunkStatus {
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return this.y;
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}
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+ // Paper start
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+ public static ChunkStatus getStatus(String name) {
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+ try {
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+ // We need this otherwise we return EMPTY for invalid names
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+ MinecraftKey key = new MinecraftKey(name);
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+ return IRegistry.CHUNK_STATUS.getOptional(key).orElse(null);
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+ } catch (Exception ex) {
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+ return null; // invalid name
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+ }
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+ }
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+ // Paper end
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public static ChunkStatus a(String s) {
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return (ChunkStatus) IRegistry.CHUNK_STATUS.get(MinecraftKey.a(s));
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}
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diff --git a/src/main/java/net/minecraft/server/PlayerChunk.java b/src/main/java/net/minecraft/server/PlayerChunk.java
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index 14a176d61..98590e233 100644
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--- a/src/main/java/net/minecraft/server/PlayerChunk.java
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+++ b/src/main/java/net/minecraft/server/PlayerChunk.java
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@@ -70,6 +70,19 @@ public class PlayerChunk {
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Either<IChunkAccess, PlayerChunk.Failure> either = (Either<IChunkAccess, PlayerChunk.Failure>) statusFuture.getNow(null);
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return either == null ? null : (Chunk) either.left().orElse(null);
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}
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+
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+ public IChunkAccess getAvailableChunkNow() {
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+ // TODO can we just getStatusFuture(EMPTY)?
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+ for (ChunkStatus curr = ChunkStatus.FULL, next = curr.getPreviousStatus(); curr != next; curr = next, next = next.getPreviousStatus()) {
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+ CompletableFuture<Either<IChunkAccess, PlayerChunk.Failure>> future = this.getStatusFutureUnchecked(curr);
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+ Either<IChunkAccess, PlayerChunk.Failure> either = future.getNow(null);
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+ if (either == null || !either.left().isPresent()) {
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+ continue;
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+ }
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+ return either.left().get();
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+ }
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+ return null;
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+ }
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// Paper end
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public CompletableFuture<Either<IChunkAccess, PlayerChunk.Failure>> getStatusFutureUnchecked(ChunkStatus chunkstatus) {
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diff --git a/src/main/java/net/minecraft/server/PlayerChunkMap.java b/src/main/java/net/minecraft/server/PlayerChunkMap.java
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index 2be6fa0f0..bdadbd436 100644
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--- a/src/main/java/net/minecraft/server/PlayerChunkMap.java
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+++ b/src/main/java/net/minecraft/server/PlayerChunkMap.java
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@@ -891,11 +891,61 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
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}
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@Nullable
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- private NBTTagCompound readChunkData(ChunkCoordIntPair chunkcoordintpair) throws IOException {
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+ public NBTTagCompound readChunkData(ChunkCoordIntPair chunkcoordintpair) throws IOException { // Paper - private -> public
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NBTTagCompound nbttagcompound = this.read(chunkcoordintpair);
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- return nbttagcompound == null ? null : this.getChunkData(this.world.getWorldProvider().getDimensionManager(), this.m, nbttagcompound, chunkcoordintpair, world); // CraftBukkit
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+ // Paper start - Cache chunk status on disk
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+ if (nbttagcompound == null) {
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+ return null;
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+ }
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+
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+ nbttagcompound = this.getChunkData(this.world.getWorldProvider().getDimensionManager(), this.m, nbttagcompound, chunkcoordintpair, world); // CraftBukkit
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+ if (nbttagcompound == null) {
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+ return null;
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+ }
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+
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+ this.updateChunkStatusOnDisk(chunkcoordintpair, nbttagcompound);
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+
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+ return nbttagcompound;
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+ // Paper end
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+ }
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+
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+ // Paper start - chunk status cache "api"
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+ public ChunkStatus getChunkStatusOnDiskIfCached(ChunkCoordIntPair chunkPos) {
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+ RegionFile regionFile = this.getRegionFileIfLoaded(chunkPos);
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+
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+ return regionFile == null ? null : regionFile.getStatusIfCached(chunkPos.x, chunkPos.z);
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+ }
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+
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+ public ChunkStatus getChunkStatusOnDisk(ChunkCoordIntPair chunkPos) throws IOException {
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+ RegionFile regionFile = this.getRegionFile(chunkPos, false);
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+
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+ if (!regionFile.chunkExists(chunkPos)) {
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+ return null;
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+ }
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+
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+ ChunkStatus status = regionFile.getStatusIfCached(chunkPos.x, chunkPos.z);
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+
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+ if (status != null) {
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+ return status;
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+ }
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+
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+ this.readChunkData(chunkPos);
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+
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+ return regionFile.getStatusIfCached(chunkPos.x, chunkPos.z);
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+ }
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+
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+ public void updateChunkStatusOnDisk(ChunkCoordIntPair chunkPos, @Nullable NBTTagCompound compound) throws IOException {
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+ RegionFile regionFile = this.getRegionFile(chunkPos, false);
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+
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+ regionFile.setStatus(chunkPos.x, chunkPos.z, ChunkRegionLoader.getStatus(compound));
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+ }
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+
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+ public IChunkAccess getUnloadingChunk(int chunkX, int chunkZ) {
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+ PlayerChunk chunkHolder = this.pendingUnload.get(ChunkCoordIntPair.pair(chunkX, chunkZ));
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+ return chunkHolder == null ? null : chunkHolder.getAvailableChunkNow();
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}
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+ // Paper end
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boolean isOutsideOfRange(ChunkCoordIntPair chunkcoordintpair) {
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// Spigot start
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diff --git a/src/main/java/net/minecraft/server/RegionFile.java b/src/main/java/net/minecraft/server/RegionFile.java
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index ccc3d6c7a..b487e8060 100644
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--- a/src/main/java/net/minecraft/server/RegionFile.java
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+++ b/src/main/java/net/minecraft/server/RegionFile.java
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@@ -31,6 +31,30 @@ public class RegionFile implements AutoCloseable {
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private final int[] d = new int[1024]; private final int[] timestamps = d; // Paper - OBFHELPER
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private final List<Boolean> e; // PAIL freeSectors
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+ // Paper start - Cache chunk status
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+ private final ChunkStatus[] statuses = new ChunkStatus[32 * 32];
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+
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+ private boolean closed;
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+
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+ // invoked on write/read
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+ public void setStatus(int x, int z, ChunkStatus status) {
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+ if (this.closed) {
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+ // We've used an invalid region file.
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+ throw new IllegalStateException("RegionFile is closed");
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+ }
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+ this.statuses[this.getChunkLocation(new ChunkCoordIntPair(x, z))] = status;
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+ }
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+
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+ public ChunkStatus getStatusIfCached(int x, int z) {
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+ if (this.closed) {
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+ // We've used an invalid region file.
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+ throw new IllegalStateException("RegionFile is closed");
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+ }
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+ final int location = this.getChunkLocation(new ChunkCoordIntPair(x, z));
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+ return this.statuses[location];
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+ }
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+ // Paper end
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+
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public RegionFile(File file) throws IOException {
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this.b = new RandomAccessFile(file, "rw");
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this.file = file; // Spigot // Paper - We need this earlier
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@@ -291,6 +315,7 @@ public class RegionFile implements AutoCloseable {
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return this.c[this.f(chunkcoordintpair)];
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}
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+ public final boolean chunkExists(ChunkCoordIntPair chunkPos) { return this.d(chunkPos); } // Paper - OBFHELPER
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public boolean d(ChunkCoordIntPair chunkcoordintpair) {
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return this.getOffset(chunkcoordintpair) != 0;
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}
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@@ -304,6 +329,7 @@ public class RegionFile implements AutoCloseable {
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this.c[j] = i; // Spigot - move this to after the write
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}
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+ private final int getChunkLocation(ChunkCoordIntPair chunkcoordintpair) { return this.f(chunkcoordintpair); } // Paper - OBFHELPER
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private int f(ChunkCoordIntPair chunkcoordintpair) {
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return chunkcoordintpair.j() + chunkcoordintpair.k() * 32;
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}
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@@ -318,6 +344,7 @@ public class RegionFile implements AutoCloseable {
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}
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public void close() throws IOException {
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+ this.closed = true; // Paper
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this.b.close();
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}
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diff --git a/src/main/java/net/minecraft/server/RegionFileCache.java b/src/main/java/net/minecraft/server/RegionFileCache.java
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index 6f34d8aea..d2b328945 100644
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--- a/src/main/java/net/minecraft/server/RegionFileCache.java
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+++ b/src/main/java/net/minecraft/server/RegionFileCache.java
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@@ -47,6 +47,12 @@ public abstract class RegionFileCache implements AutoCloseable {
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// Paper start
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}
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+ // Paper start
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+ public RegionFile getRegionFileIfLoaded(ChunkCoordIntPair chunkcoordintpair) {
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+ return this.cache.getAndMoveToFirst(ChunkCoordIntPair.pair(chunkcoordintpair.getRegionX(), chunkcoordintpair.getRegionZ()));
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+ }
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+ // Paper end
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+
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public RegionFile getRegionFile(ChunkCoordIntPair chunkcoordintpair, boolean existingOnly) throws IOException { return this.a(chunkcoordintpair, existingOnly); } // Paper - OBFHELPER
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private RegionFile a(ChunkCoordIntPair chunkcoordintpair, boolean existingOnly) throws IOException { // CraftBukkit
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long i = ChunkCoordIntPair.pair(chunkcoordintpair.getRegionX(), chunkcoordintpair.getRegionZ());
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@@ -110,6 +116,7 @@ public abstract class RegionFileCache implements AutoCloseable {
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try {
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NBTCompressedStreamTools.writeNBT(nbttagcompound, out);
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out.close();
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+ regionfile.setStatus(chunk.x, chunk.z, ChunkRegionLoader.getStatus(nbttagcompound)); // Paper - cache status on disk
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regionfile.setOversized(chunkX, chunkZ, false);
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} catch (RegionFile.ChunkTooLargeException ignored) {
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printOversizedLog("ChunkTooLarge! Someone is trying to duplicate.", regionfile.file, chunkX, chunkZ);
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@@ -127,6 +134,7 @@ public abstract class RegionFileCache implements AutoCloseable {
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if (SIZE_THRESHOLD == OVERZEALOUS_THRESHOLD) {
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resetFilterThresholds();
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}
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+ regionfile.setStatus(chunk.x, chunk.z, ChunkRegionLoader.getStatus(nbttagcompound)); // Paper - cache status on disk
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} catch (RegionFile.ChunkTooLargeException e) {
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printOversizedLog("ChunkTooLarge even after reduction. Trying in overzealous mode.", regionfile.file, chunkX, chunkZ);
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// Eek, major fail. We have retry logic, so reduce threshholds and fall back
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diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
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index 0c31c349a..4a035f0f0 100644
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--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
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+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
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@@ -18,6 +18,7 @@ import java.util.Objects;
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import java.util.Random;
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import java.util.Set;
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import java.util.UUID;
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+import java.util.concurrent.CompletableFuture;
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import java.util.function.Predicate;
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import java.util.stream.Collectors;
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import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
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@@ -407,8 +408,22 @@ public class CraftWorld implements World {
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@Override
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public boolean isChunkGenerated(int x, int z) {
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+ // Paper start - Fix this method
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+ if (!Bukkit.isPrimaryThread()) {
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+ return CompletableFuture.supplyAsync(() -> {
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+ return CraftWorld.this.isChunkGenerated(x, z);
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+ }, world.getChunkProvider().serverThreadQueue).join();
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+ }
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+ IChunkAccess chunk = world.getChunkProvider().getChunkAtImmediately(x, z);
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+ if (chunk == null) {
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+ chunk = world.getChunkProvider().playerChunkMap.getUnloadingChunk(x, z);
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+ }
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+ if (chunk != null) {
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+ return chunk instanceof ProtoChunkExtension || chunk instanceof net.minecraft.server.Chunk;
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+ }
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try {
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- return world.getChunkProvider().getChunkAtIfCachedImmediately(x, z) != null || world.getChunkProvider().playerChunkMap.chunkExists(new ChunkCoordIntPair(x, z)); // Paper
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+ return world.getChunkProvider().playerChunkMap.getChunkStatusOnDisk(new ChunkCoordIntPair(x, z)) == ChunkStatus.FULL;
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+ // Paper end
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} catch (IOException ex) {
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throw new RuntimeException(ex);
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}
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@@ -520,20 +535,49 @@ public class CraftWorld implements World {
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@Override
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public boolean loadChunk(int x, int z, boolean generate) {
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org.spigotmc.AsyncCatcher.catchOp("chunk load"); // Spigot
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- IChunkAccess chunk = world.getChunkProvider().getChunkAt(x, z, generate || isChunkGenerated(x, z) ? ChunkStatus.FULL : ChunkStatus.EMPTY, true); // Paper
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+ // Paper start - Optimize this method
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+ ChunkCoordIntPair chunkPos = new ChunkCoordIntPair(x, z);
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- // If generate = false, but the chunk already exists, we will get this back.
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- if (chunk instanceof ProtoChunkExtension) {
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- // We then cycle through again to get the full chunk immediately, rather than after the ticket addition
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- chunk = world.getChunkProvider().getChunkAt(x, z, ChunkStatus.FULL, true);
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- }
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+ if (!generate) {
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- if (chunk instanceof net.minecraft.server.Chunk) {
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- world.getChunkProvider().addTicket(TicketType.PLUGIN, new ChunkCoordIntPair(x, z), 1, Unit.INSTANCE);
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- return true;
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+ IChunkAccess immediate = world.getChunkProvider().getChunkAtImmediately(x, z);
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+ if (immediate == null) {
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+ immediate = world.getChunkProvider().playerChunkMap.getUnloadingChunk(x, z);
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+ }
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+ if (immediate != null) {
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+ if (!(immediate instanceof ProtoChunkExtension) && !(immediate instanceof net.minecraft.server.Chunk)) {
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+ return false; // not full status
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+ }
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+ world.getChunkProvider().addTicket(TicketType.PLUGIN, chunkPos, 1, Unit.INSTANCE);
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+ world.getChunkAt(x, z); // make sure we're at ticket level 32 or lower
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+ return true;
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+ }
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+
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+ net.minecraft.server.RegionFile file;
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+ try {
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+ file = world.getChunkProvider().playerChunkMap.getRegionFile(chunkPos, false);
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+ } catch (IOException ex) {
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+ throw new RuntimeException(ex);
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+ }
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+
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+ ChunkStatus status = file.getStatusIfCached(x, z);
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+ if (!file.chunkExists(chunkPos) || (status != null && status != ChunkStatus.FULL)) {
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+ return false;
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+ }
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+
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+ IChunkAccess chunk = world.getChunkProvider().getChunkAt(x, z, ChunkStatus.EMPTY, true);
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+ if (!(chunk instanceof ProtoChunkExtension) && !(chunk instanceof net.minecraft.server.Chunk)) {
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+ return false;
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+ }
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+
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+ // fall through to load
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+ // we do this so we do not re-read the chunk data on disk
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}
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- return false;
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+ world.getChunkProvider().addTicket(TicketType.PLUGIN, chunkPos, 1, Unit.INSTANCE);
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+ world.getChunkProvider().getChunkAt(x, z, ChunkStatus.FULL, true);
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+ return true;
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+ // Paper end
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}
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@Override
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--
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2.23.0
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