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Paper/Spigot-Server-Patches/0384-Fix-World-isChunkGenerated-calls.patch
Zach Brown f09fed894f
Update upstream B/CB 
--- work/Bukkit
Submodule work/Bukkit 6a4242cb..337955e3:
  > SPIGOT-5468: Improve Beehive TileEntity API
  > #473: Add an API for passing the heightmap to getHighestBlockAt* method

--- work/CraftBukkit
Submodule work/CraftBukkit 807a677e..708be695:
  > SPIGOT-5468: Improve Beehive TileEntity API
  > #624: Add an API for passing the heightmap to getHighestBlockAt* method
  > MC-135989, SPIGOT-5564: Don't kick players for flight while riptiding

This deprecates the Paper getHighestBlockAt HeightMap APIs now that
Bukkit has added their own. These methods will stick around long enough
for people to migrate. Their API is pretty much the same as ours,
migration should be quick and easy.
2020-02-08 18:32:48 -06:00

381 Zeilen
17 KiB
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Originalformat Blame Verlauf

From f3e3ec09e2c0a8d1405e754d9fe3c1605b825a5d Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Sat, 15 Jun 2019 08:54:33 -0700
Subject: [PATCH] Fix World#isChunkGenerated calls
Optimize World#loadChunk() too
This patch also adds a chunk status cache on region files (note that
its only purpose is to cache the status on DISK)
diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
index 7bbcc8cd7..e7c9a969d 100644
--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
@@ -28,7 +28,7 @@ public class ChunkProviderServer extends IChunkProvider {
private final WorldServer world;
public final Thread serverThread; // Paper - private -> public
private final LightEngineThreaded lightEngine;
- private final ChunkProviderServer.a serverThreadQueue;
+ public final ChunkProviderServer.a serverThreadQueue; // Paper private -> public
public final PlayerChunkMap playerChunkMap;
private final WorldPersistentData worldPersistentData;
private long lastTickTime;
@@ -203,6 +203,21 @@ public class ChunkProviderServer extends IChunkProvider {
return ret;
}
+
+ @Nullable
+ public IChunkAccess getChunkAtImmediately(int x, int z) {
+ long k = ChunkCoordIntPair.pair(x, z);
+
+ // Note: Bypass cache to make this MT-Safe
+
+ PlayerChunk playerChunk = this.getChunk(k);
+ if (playerChunk == null) {
+ return null;
+ }
+
+ return playerChunk.getAvailableChunkNow();
+
+ }
// Paper end
@Nullable
diff --git a/src/main/java/net/minecraft/server/ChunkRegionLoader.java b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
index 6371f2f5b..961228e9d 100644
--- a/src/main/java/net/minecraft/server/ChunkRegionLoader.java
+++ b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
@@ -391,6 +391,17 @@ public class ChunkRegionLoader {
return nbttagcompound;
}
+ // Paper start
+ public static ChunkStatus getStatus(NBTTagCompound compound) {
+ if (compound == null) {
+ return null;
+ }
+
+ // Note: Copied from below
+ return ChunkStatus.getStatus(compound.getCompound("Level").getString("Status"));
+ }
+ // Paper end
+
public static ChunkStatus.Type a(@Nullable NBTTagCompound nbttagcompound) {
if (nbttagcompound != null) {
ChunkStatus chunkstatus = ChunkStatus.a(nbttagcompound.getCompound("Level").getString("Status"));
diff --git a/src/main/java/net/minecraft/server/ChunkStatus.java b/src/main/java/net/minecraft/server/ChunkStatus.java
index efdf611e6..134a4f0b7 100644
--- a/src/main/java/net/minecraft/server/ChunkStatus.java
+++ b/src/main/java/net/minecraft/server/ChunkStatus.java
@@ -176,6 +176,7 @@ public class ChunkStatus {
return this.s;
}
+ public ChunkStatus getPreviousStatus() { return this.e(); } // Paper - OBFHELPER
public ChunkStatus e() {
return this.u;
}
@@ -196,6 +197,17 @@ public class ChunkStatus {
return this.y;
}
+ // Paper start
+ public static ChunkStatus getStatus(String name) {
+ try {
+ // We need this otherwise we return EMPTY for invalid names
+ MinecraftKey key = new MinecraftKey(name);
+ return IRegistry.CHUNK_STATUS.getOptional(key).orElse(null);
+ } catch (Exception ex) {
+ return null; // invalid name
+ }
+ }
+ // Paper end
public static ChunkStatus a(String s) {
return (ChunkStatus) IRegistry.CHUNK_STATUS.get(MinecraftKey.a(s));
}
diff --git a/src/main/java/net/minecraft/server/IChunkLoader.java b/src/main/java/net/minecraft/server/IChunkLoader.java
index f0a052eec..2f95174fc 100644
--- a/src/main/java/net/minecraft/server/IChunkLoader.java
+++ b/src/main/java/net/minecraft/server/IChunkLoader.java
@@ -8,7 +8,7 @@ import javax.annotation.Nullable;
public class IChunkLoader implements AutoCloseable {
- private final IOWorker a;
+ private final IOWorker a; public IOWorker getIOWorker() { return a; } // Paper - OBFHELPER
protected final DataFixer b;
@Nullable
private PersistentStructureLegacy c;
diff --git a/src/main/java/net/minecraft/server/PlayerChunk.java b/src/main/java/net/minecraft/server/PlayerChunk.java
index c91312fac..5108d3ee9 100644
--- a/src/main/java/net/minecraft/server/PlayerChunk.java
+++ b/src/main/java/net/minecraft/server/PlayerChunk.java
@@ -114,6 +114,19 @@ public class PlayerChunk {
Either<IChunkAccess, PlayerChunk.Failure> either = (Either<IChunkAccess, PlayerChunk.Failure>) statusFuture.getNow(null);
return either == null ? null : (Chunk) either.left().orElse(null);
}
+
+ public IChunkAccess getAvailableChunkNow() {
+ // TODO can we just getStatusFuture(EMPTY)?
+ for (ChunkStatus curr = ChunkStatus.FULL, next = curr.getPreviousStatus(); curr != next; curr = next, next = next.getPreviousStatus()) {
+ CompletableFuture<Either<IChunkAccess, PlayerChunk.Failure>> future = this.getStatusFutureUnchecked(curr);
+ Either<IChunkAccess, PlayerChunk.Failure> either = future.getNow(null);
+ if (either == null || !either.left().isPresent()) {
+ continue;
+ }
+ return either.left().get();
+ }
+ return null;
+ }
// Paper end
public CompletableFuture<Either<IChunkAccess, PlayerChunk.Failure>> getStatusFutureUnchecked(ChunkStatus chunkstatus) {
diff --git a/src/main/java/net/minecraft/server/PlayerChunkMap.java b/src/main/java/net/minecraft/server/PlayerChunkMap.java
index 7a4778ed6..0964b73d8 100644
--- a/src/main/java/net/minecraft/server/PlayerChunkMap.java
+++ b/src/main/java/net/minecraft/server/PlayerChunkMap.java
@@ -967,12 +967,62 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
}
@Nullable
- private NBTTagCompound readChunkData(ChunkCoordIntPair chunkcoordintpair) throws IOException {
+ public NBTTagCompound readChunkData(ChunkCoordIntPair chunkcoordintpair) throws IOException { // Paper - private -> public
NBTTagCompound nbttagcompound = this.read(chunkcoordintpair);
- return nbttagcompound == null ? null : this.getChunkData(this.world.getWorldProvider().getDimensionManager(), this.l, nbttagcompound, chunkcoordintpair, world); // CraftBukkit
+ // Paper start - Cache chunk status on disk
+ if (nbttagcompound == null) {
+ return null;
+ }
+
+ nbttagcompound = this.getChunkData(this.world.getWorldProvider().getDimensionManager(), this.l, nbttagcompound, chunkcoordintpair, world); // CraftBukkit
+ if (nbttagcompound == null) {
+ return null;
+ }
+
+ this.updateChunkStatusOnDisk(chunkcoordintpair, nbttagcompound);
+
+ return nbttagcompound;
+ // Paper end
+ }
+
+ // Paper start - chunk status cache "api"
+ public ChunkStatus getChunkStatusOnDiskIfCached(ChunkCoordIntPair chunkPos) {
+ RegionFile regionFile = this.getIOWorker().getRegionFileCache().getRegionFileIfLoaded(chunkPos);
+
+ return regionFile == null ? null : regionFile.getStatusIfCached(chunkPos.x, chunkPos.z);
}
+ public ChunkStatus getChunkStatusOnDisk(ChunkCoordIntPair chunkPos) throws IOException {
+ RegionFile regionFile = this.getIOWorker().getRegionFileCache().getFile(chunkPos, false);
+
+ if (!regionFile.chunkExists(chunkPos)) {
+ return null;
+ }
+
+ ChunkStatus status = regionFile.getStatusIfCached(chunkPos.x, chunkPos.z);
+
+ if (status != null) {
+ return status;
+ }
+
+ this.readChunkData(chunkPos);
+
+ return regionFile.getStatusIfCached(chunkPos.x, chunkPos.z);
+ }
+
+ public void updateChunkStatusOnDisk(ChunkCoordIntPair chunkPos, @Nullable NBTTagCompound compound) throws IOException {
+ RegionFile regionFile = this.getIOWorker().getRegionFileCache().getFile(chunkPos, false);
+
+ regionFile.setStatus(chunkPos.x, chunkPos.z, ChunkRegionLoader.getStatus(compound));
+ }
+
+ public IChunkAccess getUnloadingChunk(int chunkX, int chunkZ) {
+ PlayerChunk chunkHolder = this.pendingUnload.get(ChunkCoordIntPair.pair(chunkX, chunkZ));
+ return chunkHolder == null ? null : chunkHolder.getAvailableChunkNow();
+ }
+ // Paper end
+
boolean isOutsideOfRange(ChunkCoordIntPair chunkcoordintpair) {
// Spigot start
return isOutsideOfRange(chunkcoordintpair, false);
diff --git a/src/main/java/net/minecraft/server/RegionFile.java b/src/main/java/net/minecraft/server/RegionFile.java
index 6b543f89d..d37abf2cf 100644
--- a/src/main/java/net/minecraft/server/RegionFile.java
+++ b/src/main/java/net/minecraft/server/RegionFile.java
@@ -36,6 +36,30 @@ public class RegionFile implements AutoCloseable {
private final RegionFileBitSet freeSectors;
public final File file;
+ // Paper start - Cache chunk status
+ private final ChunkStatus[] statuses = new ChunkStatus[32 * 32];
+
+ private boolean closed;
+
+ // invoked on write/read
+ public void setStatus(int x, int z, ChunkStatus status) {
+ if (this.closed) {
+ // We've used an invalid region file.
+ throw new IllegalStateException("RegionFile is closed");
+ }
+ this.statuses[this.getChunkLocation(new ChunkCoordIntPair(x, z))] = status;
+ }
+
+ public ChunkStatus getStatusIfCached(int x, int z) {
+ if (this.closed) {
+ // We've used an invalid region file.
+ throw new IllegalStateException("RegionFile is closed");
+ }
+ final int location = this.getChunkLocation(new ChunkCoordIntPair(x, z));
+ return this.statuses[location];
+ }
+ // Paper end
+
public RegionFile(File file, File file1) throws IOException {
this(file.toPath(), file1.toPath(), RegionFileCompression.b);
}
@@ -350,11 +374,13 @@ public class RegionFile implements AutoCloseable {
return this.getOffset(chunkcoordintpair) != 0;
}
+ private final int getChunkLocation(ChunkCoordIntPair chunkcoordintpair) { return this.g(chunkcoordintpair); } // Paper - OBFHELPER
private static int g(ChunkCoordIntPair chunkcoordintpair) {
return chunkcoordintpair.j() + chunkcoordintpair.k() * 32;
}
public void close() throws IOException {
+ this.closed = true; // Paper
try {
this.c();
} finally {
diff --git a/src/main/java/net/minecraft/server/RegionFileCache.java b/src/main/java/net/minecraft/server/RegionFileCache.java
index b3d1bb5fd..e07ae9854 100644
--- a/src/main/java/net/minecraft/server/RegionFileCache.java
+++ b/src/main/java/net/minecraft/server/RegionFileCache.java
@@ -18,7 +18,14 @@ public final class RegionFileCache implements AutoCloseable {
this.b = file;
}
- private RegionFile getFile(ChunkCoordIntPair chunkcoordintpair, boolean existingOnly) throws IOException { // CraftBukkit
+
+ // Paper start
+ public RegionFile getRegionFileIfLoaded(ChunkCoordIntPair chunkcoordintpair) {
+ return this.cache.getAndMoveToFirst(ChunkCoordIntPair.pair(chunkcoordintpair.getRegionX(), chunkcoordintpair.getRegionZ()));
+ }
+
+ // Paper end
+ public RegionFile getFile(ChunkCoordIntPair chunkcoordintpair, boolean existingOnly) throws IOException { // CraftBukkit // Paper - private > public
long i = ChunkCoordIntPair.pair(chunkcoordintpair.getRegionX(), chunkcoordintpair.getRegionZ());
RegionFile regionfile = (RegionFile) this.cache.getAndMoveToFirst(i);
@@ -160,7 +167,8 @@ public final class RegionFileCache implements AutoCloseable {
try {
NBTCompressedStreamTools.a(nbttagcompound, (DataOutput) dataoutputstream);
- regionfile.setOversized(chunkcoordintpair.x, chunkcoordintpair.z, false); // We don't do this anymore
+ regionfile.setStatus(chunkcoordintpair.x, chunkcoordintpair.z, ChunkRegionLoader.getStatus(nbttagcompound)); // Paper - cache status on disk
+ regionfile.setOversized(chunkcoordintpair.x, chunkcoordintpair.z, false);
} catch (Throwable throwable1) {
throwable = throwable1;
throw throwable1;
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index 67d51eeba..6204a2207 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -18,6 +18,7 @@ import java.util.Objects;
import java.util.Random;
import java.util.Set;
import java.util.UUID;
+import java.util.concurrent.CompletableFuture;
import java.util.function.Predicate;
import java.util.stream.Collectors;
import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
@@ -404,8 +405,22 @@ public class CraftWorld implements World {
@Override
public boolean isChunkGenerated(int x, int z) {
+ // Paper start - Fix this method
+ if (!Bukkit.isPrimaryThread()) {
+ return CompletableFuture.supplyAsync(() -> {
+ return CraftWorld.this.isChunkGenerated(x, z);
+ }, world.getChunkProvider().serverThreadQueue).join();
+ }
+ IChunkAccess chunk = world.getChunkProvider().getChunkAtImmediately(x, z);
+ if (chunk == null) {
+ chunk = world.getChunkProvider().playerChunkMap.getUnloadingChunk(x, z);
+ }
+ if (chunk != null) {
+ return chunk instanceof ProtoChunkExtension || chunk instanceof net.minecraft.server.Chunk;
+ }
try {
- return world.getChunkProvider().getChunkAtIfCachedImmediately(x, z) != null || world.getChunkProvider().playerChunkMap.read(new ChunkCoordIntPair(x, z)) != null; // Paper (TODO check if the first part can be removed)
+ return world.getChunkProvider().playerChunkMap.getChunkStatusOnDisk(new ChunkCoordIntPair(x, z)) == ChunkStatus.FULL;
+ // Paper end
} catch (IOException ex) {
throw new RuntimeException(ex);
}
@@ -517,20 +532,49 @@ public class CraftWorld implements World {
@Override
public boolean loadChunk(int x, int z, boolean generate) {
org.spigotmc.AsyncCatcher.catchOp("chunk load"); // Spigot
- IChunkAccess chunk = world.getChunkProvider().getChunkAt(x, z, generate || isChunkGenerated(x, z) ? ChunkStatus.FULL : ChunkStatus.EMPTY, true); // Paper
+ // Paper start - Optimize this method
+ ChunkCoordIntPair chunkPos = new ChunkCoordIntPair(x, z);
- // If generate = false, but the chunk already exists, we will get this back.
- if (chunk instanceof ProtoChunkExtension) {
- // We then cycle through again to get the full chunk immediately, rather than after the ticket addition
- chunk = world.getChunkProvider().getChunkAt(x, z, ChunkStatus.FULL, true);
- }
+ if (!generate) {
- if (chunk instanceof net.minecraft.server.Chunk) {
- world.getChunkProvider().addTicket(TicketType.PLUGIN, new ChunkCoordIntPair(x, z), 1, Unit.INSTANCE);
- return true;
+ IChunkAccess immediate = world.getChunkProvider().getChunkAtImmediately(x, z);
+ if (immediate == null) {
+ immediate = world.getChunkProvider().playerChunkMap.getUnloadingChunk(x, z);
+ }
+ if (immediate != null) {
+ if (!(immediate instanceof ProtoChunkExtension) && !(immediate instanceof net.minecraft.server.Chunk)) {
+ return false; // not full status
+ }
+ world.getChunkProvider().addTicket(TicketType.PLUGIN, chunkPos, 1, Unit.INSTANCE);
+ world.getChunkAt(x, z); // make sure we're at ticket level 32 or lower
+ return true;
+ }
+
+ net.minecraft.server.RegionFile file;
+ try {
+ file = world.getChunkProvider().playerChunkMap.getIOWorker().getRegionFileCache().getFile(chunkPos, false);
+ } catch (IOException ex) {
+ throw new RuntimeException(ex);
+ }
+
+ ChunkStatus status = file.getStatusIfCached(x, z);
+ if (!file.chunkExists(chunkPos) || (status != null && status != ChunkStatus.FULL)) {
+ return false;
+ }
+
+ IChunkAccess chunk = world.getChunkProvider().getChunkAt(x, z, ChunkStatus.EMPTY, true);
+ if (!(chunk instanceof ProtoChunkExtension) && !(chunk instanceof net.minecraft.server.Chunk)) {
+ return false;
+ }
+
+ // fall through to load
+ // we do this so we do not re-read the chunk data on disk
}
- return false;
+ world.getChunkProvider().addTicket(TicketType.PLUGIN, chunkPos, 1, Unit.INSTANCE);
+ world.getChunkProvider().getChunkAt(x, z, ChunkStatus.FULL, true);
+ return true;
+ // Paper end
}
@Override
--
2.25.0
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