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Paper/removed/server/0001-Async-Chunk-Load.patch

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[CI-SKIP] Patch of progress on async chunkload, delay until 1.13.1 Do not even try to use this. It's seriously not ready. 1.13.1 changes a lot of stuff here, so i'm going to wait until that to resume this work.
2018-07-26 07:28:53 +02:00
From c47e8c9505057b7a6f429a5c36065be1c783cfda Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Thu, 26 Jul 2018 01:28:00 -0400
Subject: [PATCH] Async Chunk Load
Current unfinished, not working progress
---
.../minecraft/server/ChunkProviderServer.java | 118 +++++++++++++++---
.../minecraft/server/ChunkRegionLoader.java | 14 ++-
.../java/net/minecraft/server/MCUtil.java | 35 ++++--
.../net/minecraft/server/MinecraftServer.java | 1 +
.../net/minecraft/server/PlayerChunk.java | 14 ++-
.../org/bukkit/craftbukkit/CraftWorld.java | 10 +-
.../craftbukkit/chunkio/ChunkIOProvider.java | 42 +++++--
.../craftbukkit/chunkio/QueuedChunk.java | 8 ++
.../util/AsynchronousExecutor.java | 6 +-
9 files changed, 191 insertions(+), 57 deletions(-)
diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
index 0e0c7b1abe..e72f43e2c8 100644
--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
@@ -108,13 +108,33 @@ public class ChunkProviderServer implements IChunkProvider {
@Nullable
public Chunk getOrLoadChunkAt(int i, int j) {
- Long2ObjectMap long2objectmap = this.chunks;
-
- synchronized (this.chunks) {
- Chunk chunk = world.paperConfig.allowPermaChunkLoaders ? getLoadedChunkAt(i, j) : getChunkIfLoaded(i, j); // Paper - Configurable perma chunk loaders
+ // Paper start
+ return getOrLoadChunkAt(i, j, null);
+ }
+ public Chunk getOrLoadChunkAt(int i, int j, Runnable runnable) {
+ // Paper - remove synchronized
+ Chunk chunk = world.paperConfig.allowPermaChunkLoaders ? getLoadedChunkAt(i, j) : getChunkIfLoaded(i, j); // Paper - Configurable perma chunk loaders
+ if (!this.chunkLoader.chunkExists(i, j)) {
+ return null;
+ }
+ long key = ChunkCoordIntPair.asLong(i, j);
+ synchronized (pendingGenerates) {
+ if (pendingGenerates.containsKey(key)) {
+ return null; // let getChunkAt handle it
+ }
+ }
- return chunk != null ? chunk : this.loadChunkAt(i, j);
+ if (chunk == null && runnable != null) {
+ ChunkIOExecutor.queueChunkLoad(world, (ChunkRegionLoader) this.chunkLoader, this, i, j, runnable);
+ return null;
+ }
+ if (chunk == null) {
+ chunk = ChunkIOExecutor.syncChunkLoad(world, (ChunkRegionLoader) chunkLoader, this, i, j);
}
+ if (chunk != null && runnable != null) {
+ runnable.run();
+ }
+ return chunk;
}
// CraftBukkit start
@@ -123,20 +143,74 @@ public class ChunkProviderServer implements IChunkProvider {
}
// CraftBukkit end
+ // Paper sart
+ private final it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap<CompletableFuture<Chunk>> pendingGenerates = new it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap<>();
+ public CompletableFuture<Chunk> generateChunk(int i, int j) { // Incase something else calls this
+ return generateChunk(i, j, null);
+ }
+
+ private CompletableFuture<Chunk> postChunkgenMain(ProtoChunk proto) {
+ CompletableFuture<Chunk> pending = new CompletableFuture<>();
+ MCUtil.ensureChunkMain(() -> {
+ try {
+ pending.complete(this.finishChunkgen(proto));
+ } catch (Exception e) {
+ pending.completeExceptionally(e);
+ }
+ });
+ return pending;
+ }
+ public CompletableFuture<Chunk> generateChunk(int i, int j, Consumer<Chunk> consumer) {
+ long key = ChunkCoordIntPair.asLong(i, j);
+ CompletableFuture<Chunk> pending;
+ boolean generate = false;
+ synchronized (pendingGenerates) {
+ pending = pendingGenerates.get(key);
+ if (pending == null) {
+ pending = new CompletableFuture<>();
+ pendingGenerates.put(key, pending);
+ generate = true;
+ }
+ }
+ if (generate) {
+ this.generateChunk0(i, j).thenApply(chunk -> {
+ synchronized (pendingGenerates) {
+ pendingGenerates.remove(key);
+ }
+ return chunk;
+ }).thenAccept(pending::complete);
+ }
+
+ if (consumer != null) {
+ pending.thenAccept(chunk -> MCUtil.ensureMain(() -> consumer.accept(chunk)));
+ }
+ return pending;
+ }
+
public Chunk getChunkAt(int i, int j) {
- Chunk chunk = this.getOrLoadChunkAt(i, j);
+ return getChunkAt(i, j, null, true);
+ }
+ public Chunk getChunkAt(int i, int j, Runnable runnable) {
+ return getChunkAt(i, j, runnable, true);
+ }
+ public Chunk getChunkAt(int i, int j, Runnable runnable, boolean generate) {
+ // Paper end
+ //calling into self and blocking?
+ Chunk chunk = this.getOrLoadChunkAt(i, j, runnable);
if (chunk != null) {
return chunk;
- } else {
+ } else if (generate) {
try (co.aikar.timings.Timing timing = world.timings.chunkGeneration.startTiming()) {
- ; // Spigot
- chunk = (Chunk) this.generateChunk(i, j).get();
- return chunk;
- } catch (ExecutionException | InterruptedException interruptedexception) {
+ // Paper start
+ CompletableFuture<Chunk> pending = generateChunk(i, j, runnable != null ? unused -> runnable.run() : null);
+ return runnable != null ? null : MCUtil.processChunkQueueWhileWaiting(pending);
+ } catch (Exception interruptedexception) {
+ // Paper end
throw this.a(i, j, (Throwable) interruptedexception);
}
}
+ return null; // Paper
}
public IChunkAccess d(int i, int j) {
@@ -160,7 +234,7 @@ public class ChunkProviderServer implements IChunkProvider {
if (chunk != null) {
consumer.accept(chunk);
} else {
- this.g.a(chunkcoordintpair).thenApply(this::a).thenAccept(consumer);
+ this.g.a(chunkcoordintpair).thenApply(proto -> postChunkgenMain(proto).thenAccept(consumer)); // Paper
}
}
@@ -168,11 +242,13 @@ public class ChunkProviderServer implements IChunkProvider {
}
// CraftBukkit start
- public CompletableFuture<Chunk> generateChunk(int i, int j) {
- return this.generateChunk(i, j, false);
+ // Paper start - change name, make private
+ private CompletableFuture<Chunk> generateChunk0(int i, int j) {
+ return this.generateChunk0(i, j, false);
}
- public CompletableFuture<Chunk> generateChunk(int i, int j, boolean force) {
+ private CompletableFuture<Chunk> generateChunk0(int i, int j, boolean force) {
+ // Paper end
this.g.b();
ChunkCoordIntPair chunkcoordintpair = new ChunkCoordIntPair(i, j);
@@ -183,7 +259,11 @@ public class ChunkProviderServer implements IChunkProvider {
// CraftBukkit end
CompletableFuture<ProtoChunk> completablefuture = this.g.c(); // CraftBukkit - decompile error
- return completablefuture.thenApply(this::a);
+ // Paper start
+ CompletableFuture<Chunk> pending = new CompletableFuture<>();
+ completablefuture.thenApply(proto -> postChunkgenMain(proto).thenAccept(pending::complete));
+ return pending;
+ // Paper end
}
private ReportedException a(int i, int j, Throwable throwable) {
@@ -196,7 +276,7 @@ public class ChunkProviderServer implements IChunkProvider {
return new ReportedException(crashreport);
}
- private Chunk a(IChunkAccess ichunkaccess) {
+ private Chunk finishChunkgen(IChunkAccess ichunkaccess) { // Paper - rename method - Anything that accesses this should ensure it goes through process to ensure it is on main thread
ChunkCoordIntPair chunkcoordintpair = ichunkaccess.getPos();
int i = chunkcoordintpair.x;
int j = chunkcoordintpair.z;
@@ -204,7 +284,7 @@ public class ChunkProviderServer implements IChunkProvider {
Long2ObjectMap long2objectmap = this.chunks;
Chunk chunk;
- synchronized (this.chunks) {
+ //synchronized (this.chunks) { // Paper
Chunk chunk1 = (Chunk) this.chunks.get(k);
if (chunk1 != null) {
@@ -222,7 +302,7 @@ public class ChunkProviderServer implements IChunkProvider {
}
this.chunks.put(k, chunk);
- }
+ //} // Paper
chunk.addEntities();
return chunk;
diff --git a/src/main/java/net/minecraft/server/ChunkRegionLoader.java b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
index bd52bf6561..e4447ecf58 100644
--- a/src/main/java/net/minecraft/server/ChunkRegionLoader.java
+++ b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
@@ -62,8 +62,14 @@ public class ChunkRegionLoader implements IChunkLoader, IAsyncChunkSaver {
}
@Nullable
- private synchronized NBTTagCompound a(GeneratorAccess generatoraccess, int i, int j) throws IOException {
- NBTTagCompound nbttagcompound = SupplierUtils.getIfExists(this.b.get(new ChunkCoordIntPair(i, j))); // Spigot
+ // Paper start - remove synchronized, manually sync on the map
+ private NBTTagCompound a(GeneratorAccess generatoraccess, int i, int j) throws IOException {
+ Supplier<NBTTagCompound> supplier;
+ synchronized (this) {
+ supplier = this.b.get(new ChunkCoordIntPair(i, j));
+ }
+ NBTTagCompound nbttagcompound = SupplierUtils.getIfExists(supplier); // Spigot
+ // Paper end
return nbttagcompound != null ? nbttagcompound : this.a(generatoraccess.o().getDimensionManager(), generatoraccess.s_(), i, j, generatoraccess); // CraftBukkit
}
@@ -71,7 +77,7 @@ public class ChunkRegionLoader implements IChunkLoader, IAsyncChunkSaver {
// CraftBukkit start
private boolean check(ChunkProviderServer cps, int x, int z) throws IOException {
if (cps != null) {
- com.google.common.base.Preconditions.checkState(org.bukkit.Bukkit.isPrimaryThread(), "primary thread");
+ //com.google.common.base.Preconditions.checkState(org.bukkit.Bukkit.isPrimaryThread(), "primary thread"); // Paper
if (cps.isLoaded(x, z)) {
return true;
}
@@ -162,7 +168,7 @@ public class ChunkRegionLoader implements IChunkLoader, IAsyncChunkSaver {
return null;
}
- public synchronized Object[] loadChunk(GeneratorAccess generatoraccess, int i, int j, Consumer<Chunk> consumer) throws IOException {
+ public Object[] loadChunk(GeneratorAccess generatoraccess, int i, int j, Consumer<Chunk> consumer) throws IOException { // Paper - remove synchronize
// CraftBukkit end
NBTTagCompound nbttagcompound = this.a(generatoraccess, i, j);
diff --git a/src/main/java/net/minecraft/server/MCUtil.java b/src/main/java/net/minecraft/server/MCUtil.java
index 80927de08b..d936709b47 100644
--- a/src/main/java/net/minecraft/server/MCUtil.java
+++ b/src/main/java/net/minecraft/server/MCUtil.java
@@ -7,6 +7,7 @@ import com.mojang.authlib.GameProfile;
import org.apache.commons.lang.exception.ExceptionUtils;
import org.bukkit.Location;
import org.bukkit.craftbukkit.CraftWorld;
+import org.bukkit.craftbukkit.chunkio.ChunkIOExecutor;
import org.bukkit.craftbukkit.util.Waitable;
import org.spigotmc.AsyncCatcher;
@@ -14,13 +15,13 @@ import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.util.Queue;
import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.function.Supplier;
-import java.util.regex.Pattern;
public final class MCUtil {
private static final Executor asyncExecutor = Executors.newSingleThreadExecutor(new ThreadFactoryBuilder().setNameFormat("Paper Async Task Handler Thread - %1$d").build());
@@ -76,10 +77,14 @@ public final class MCUtil {
MinecraftServer.getServer().postToMainThread(new DelayedRunnable(ticks, runnable));
}
- public static void processQueue() {
+
+ private static final Queue<Runnable> chunkMainQueue = new ConcurrentLinkedQueue<>();
+ public static void processChunkMainQueue() {
+ if (!isMainThread()) {
+ return;
+ }
Runnable runnable;
- Queue<Runnable> processQueue = getProcessQueue();
- while ((runnable = processQueue.poll()) != null) {
+ while ((runnable = chunkMainQueue.poll()) != null) {
try {
runnable.run();
} catch (Exception e) {
@@ -87,14 +92,15 @@ public final class MCUtil {
}
}
}
- public static <T> T processQueueWhileWaiting(CompletableFuture <T> future) {
+ public static <T> T processChunkQueueWhileWaiting(CompletableFuture <T> future) {
try {
if (isMainThread()) {
while (!future.isDone()) {
try {
- return future.get(1, TimeUnit.MILLISECONDS);
+ return future.get(10000, TimeUnit.NANOSECONDS);
} catch (TimeoutException ignored) {
- processQueue();
+ processChunkMainQueue();
+ ChunkIOExecutor.tick();
}
}
}
@@ -103,6 +109,13 @@ public final class MCUtil {
throw new RuntimeException(e);
}
}
+ public static void ensureChunkMain(Runnable run) {
+ if (AsyncCatcher.enabled && Thread.currentThread() != MinecraftServer.getServer().primaryThread) {
+ chunkMainQueue.add(run);
+ } else {
+ run.run();
+ }
+ }
public static void ensureMain(Runnable run) {
ensureMain(null, run);
@@ -118,16 +131,12 @@ public final class MCUtil {
if (reason != null) {
new IllegalStateException("Asynchronous " + reason + "!").printStackTrace();
}
- getProcessQueue().add(run);
+ MinecraftServer.getServer().processQueue.add(run);
return;
}
run.run();
}
- private static Queue<Runnable> getProcessQueue() {
- return MinecraftServer.getServer().processQueue;
- }
-
public static <T> T ensureMain(Supplier<T> run) {
return ensureMain(null, run);
}
@@ -149,7 +158,7 @@ public final class MCUtil {
return run.get();
}
};
- getProcessQueue().add(wait);
+ MinecraftServer.getServer().processQueue.add(wait);
try {
return wait.get();
} catch (InterruptedException | ExecutionException e) {
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 90b1871196..390ecb4093 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -996,6 +996,7 @@ public abstract class MinecraftServer implements IAsyncTaskHandler, IMojangStati
// CraftBukkit start
// Run tasks that are waiting on processing
MinecraftTimings.processQueueTimer.startTiming(); // Spigot
+ MCUtil.processChunkMainQueue(); // Paper
while (!processQueue.isEmpty()) {
processQueue.remove().run();
}
diff --git a/src/main/java/net/minecraft/server/PlayerChunk.java b/src/main/java/net/minecraft/server/PlayerChunk.java
index fcd9f5491f..4c67e7d0cf 100644
--- a/src/main/java/net/minecraft/server/PlayerChunk.java
+++ b/src/main/java/net/minecraft/server/PlayerChunk.java
@@ -49,7 +49,8 @@ public class PlayerChunk {
public PlayerChunk(PlayerChunkMap playerchunkmap, int i, int j) {
this.playerChunkMap = playerchunkmap;
this.location = new ChunkCoordIntPair(i, j);
- this.chunk = playerchunkmap.getWorld().getChunkProviderServer().getOrLoadChunkAt(i, j);
+ loadInProgress = true; // Paper
+ this.chunk = playerchunkmap.getWorld().getChunkProviderServer().getOrLoadChunkAt(i, j, loadedRunnable); // Paper
this.chunkExists = this.chunk != null || ChunkIOExecutor.hasQueuedChunkLoad(playerChunkMap.getWorld(), i, j); // Paper
markChunkUsed(); // Paper - delay chunk unloads
}
@@ -82,6 +83,7 @@ public class PlayerChunk {
this.c.remove(entityplayer);
if (this.c.isEmpty()) {
+ if (!this.done) ChunkIOExecutor.dropQueuedChunkLoad(this.playerChunkMap.getWorld(), this.location.x, this.location.z, this.loadedRunnable); // Paper
this.playerChunkMap.b(this);
}
@@ -92,12 +94,14 @@ public class PlayerChunk {
if (this.chunk != null) {
return true;
} else {
- if (flag) {
- this.chunk = this.playerChunkMap.getWorld().getChunkProviderServer().getChunkAt(this.location.x, this.location.z);
- } else {
- this.chunk = this.playerChunkMap.getWorld().getChunkProviderServer().getOrLoadChunkAt(this.location.x, this.location.z);
+ // Paper start
+ if (!loadInProgress) {
+ loadInProgress = true;
+ this.chunk = playerChunkMap.getWorld().getChunkProviderServer().getChunkAt(this.location.x, this.location.z, loadedRunnable, flag);
markChunkUsed(); // Paper - delay chunk unloads
}
+ // Paper end
+
return this.chunk != null;
}
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index f4dc7e4ac6..c1324515af 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -159,13 +159,7 @@ public class CraftWorld implements World {
// Paper start - Async chunk load API
public void getChunkAtAsync(final int x, final int z, final ChunkLoadCallback callback) {
final ChunkProviderServer cps = this.world.getChunkProviderServer();
- callback.onLoad(cps.getChunkAt(x, z).bukkitChunk); // TODO: Add back async variant
- /*cps.getChunkAt(x, z, new Runnable() {
- @Override
- public void run() {
- callback.onLoad(cps.getChunkAt(x, z).bukkitChunk);
- }
- });*/
+ cps.getChunkAt(x, z, () -> callback.onLoad(cps.getChunkAt(x, z).bukkitChunk));
}
public void getChunkAtAsync(Block block, ChunkLoadCallback callback) {
@@ -266,7 +260,7 @@ public class CraftWorld implements World {
net.minecraft.server.Chunk chunk = null;
- chunk = Futures.getUnchecked(world.getChunkProviderServer().generateChunk(x, z, true));
+ chunk = MCUtil.processChunkQueueWhileWaiting(world.getChunkProviderServer().generateChunk(x, z)); // Paper
PlayerChunk playerChunk = world.getPlayerChunkMap().getChunk(x, z);
if (playerChunk != null) {
playerChunk.chunk = chunk;
diff --git a/src/main/java/org/bukkit/craftbukkit/chunkio/ChunkIOProvider.java b/src/main/java/org/bukkit/craftbukkit/chunkio/ChunkIOProvider.java
index 2bbd5a7e2a..40b86c4334 100644
--- a/src/main/java/org/bukkit/craftbukkit/chunkio/ChunkIOProvider.java
+++ b/src/main/java/org/bukkit/craftbukkit/chunkio/ChunkIOProvider.java
@@ -6,11 +6,15 @@ import co.aikar.timings.Timing;
import net.minecraft.server.Chunk;
import net.minecraft.server.ChunkCoordIntPair;
import net.minecraft.server.ChunkRegionLoader;
+import net.minecraft.server.MCUtil;
+import net.minecraft.server.MinecraftServer;
import net.minecraft.server.NBTTagCompound;
import org.bukkit.Server;
import org.bukkit.craftbukkit.util.AsynchronousExecutor;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutionException;
import java.util.concurrent.atomic.AtomicInteger;
class ChunkIOProvider implements AsynchronousExecutor.CallBackProvider<QueuedChunk, Chunk, Runnable, RuntimeException> {
@@ -21,13 +25,21 @@ class ChunkIOProvider implements AsynchronousExecutor.CallBackProvider<QueuedChu
try (Timing ignored = queuedChunk.provider.world.timings.chunkIOStage1.startTimingIfSync()) { // Paper
ChunkRegionLoader loader = queuedChunk.loader;
Object[] data = loader.loadChunk(queuedChunk.world, queuedChunk.x, queuedChunk.z, (chunk) -> {});
-
+
if (data != null) {
queuedChunk.compound = (NBTTagCompound) data[1];
return (Chunk) data[0];
+ } else {
+ // Paper start
+ CompletableFuture<Chunk> pending = new CompletableFuture<>();
+ MCUtil.ensureChunkMain(() -> {
+ System.out.println("GENERATING SEMI ASYNC" + queuedChunk);
+ queuedChunk.provider.generateChunk(queuedChunk.x, queuedChunk.z).thenApply(pending::complete);
+ });
+ MCUtil.processChunkQueueWhileWaiting(pending);
+ return null; // We still need to return null so the code below doesn't use result which is already in the world now
+ // Paper end
}
-
- return null;
} catch (IOException ex) {
throw new RuntimeException(ex);
}
@@ -35,12 +47,28 @@ class ChunkIOProvider implements AsynchronousExecutor.CallBackProvider<QueuedChu
// sync stuff
public void callStage2(QueuedChunk queuedChunk, Chunk chunk) throws RuntimeException {
- if (chunk == null || queuedChunk.provider.chunks.containsKey(ChunkCoordIntPair.a(queuedChunk.x, queuedChunk.z))) { // Paper - also call original if it was already loaded
- // If the chunk loading failed just do it synchronously (may generate)
- queuedChunk.provider.getChunkAt(queuedChunk.x, queuedChunk.z); // Paper - actually call original if it was already loaded
+ try (Timing ignored = queuedChunk.provider.world.timings.chunkIOStage2.startTimingIfSync()) { // Paper
+ if (queuedChunk.provider.chunks.containsKey(ChunkCoordIntPair.a(queuedChunk.x, queuedChunk.z))) { // Paper - also call original if it was already loaded
return;
+ } else if (chunk == null) {
+ // Retry the load
+ ChunkRegionLoader loader = queuedChunk.loader;
+ try {
+ Object[] data = loader.loadChunk(queuedChunk.world, queuedChunk.x, queuedChunk.z, unused -> {});
+ if (data != null && data[0] != null) {
+ System.out.println("LOADED AFTER NULL" + queuedChunk);
+ queuedChunk.compound = (NBTTagCompound) data[1];
+ chunk = (Chunk) data[0];
+ } else {
+ System.out.println("GENERATING" + queuedChunk);
+ // Ok failed again, generate
+ MCUtil.processChunkQueueWhileWaiting(queuedChunk.provider.generateChunk(queuedChunk.x, queuedChunk.z, null));
+ return;
+ }
+ } catch (IOException ex) {
+ throw new RuntimeException(ex);
+ }
}
- try (Timing ignored = queuedChunk.provider.world.timings.chunkIOStage2.startTimingIfSync()) { // Paper
queuedChunk.loader.loadEntities(queuedChunk.compound.getCompound("Level"), chunk);
chunk.setLastSaved(queuedChunk.provider.world.getTime());
diff --git a/src/main/java/org/bukkit/craftbukkit/chunkio/QueuedChunk.java b/src/main/java/org/bukkit/craftbukkit/chunkio/QueuedChunk.java
index 842d424f6a..c8f4db79f7 100644
--- a/src/main/java/org/bukkit/craftbukkit/chunkio/QueuedChunk.java
+++ b/src/main/java/org/bukkit/craftbukkit/chunkio/QueuedChunk.java
@@ -35,4 +35,12 @@ class QueuedChunk {
return false;
}
+
+ @Override
+ public String toString() {
+ return "QueuedChunk{" +
+ "x=" + x +
+ ", z=" + z +
+ '}';
+ }
}
diff --git a/src/main/java/org/bukkit/craftbukkit/util/AsynchronousExecutor.java b/src/main/java/org/bukkit/craftbukkit/util/AsynchronousExecutor.java
index cf1258c559..b18c27060e 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/AsynchronousExecutor.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/AsynchronousExecutor.java
@@ -10,8 +10,10 @@ import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
+import net.minecraft.server.MCUtil;
import org.apache.commons.lang.Validate;
/**
@@ -129,7 +131,8 @@ public final class AsynchronousExecutor<P, T, C, E extends Throwable> {
// We are the first into the lock
while (state != STAGE_1_COMPLETE) {
try {
- this.wait();
+ this.wait(0, 10000); // Paper
+ MCUtil.processChunkMainQueue(); // Paper
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new RuntimeException("Unable to handle interruption on " + parameter, e);
@@ -185,6 +188,7 @@ public final class AsynchronousExecutor<P, T, C, E extends Throwable> {
final P parameter = this.parameter;
final T object = this.object;
+ MCUtil.processChunkMainQueue(); // We may have an async chunk gen ready to be added to main first
provider.callStage2(parameter, object);
for (C callback : callbacks) {
if (callback == this) {
--
2.18.0
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