Paper/Spigot-Server-Patches/0359-ChunkMapDistance-CME.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
2019-05-29 05:25:08 +02:00
From: Shane Freeder <theboyetronic@gmail.com>
Date: Wed, 29 May 2019 04:01:22 +0100
Subject: [PATCH] ChunkMapDistance CME
diff --git a/src/main/java/net/minecraft/server/ChunkMapDistance.java b/src/main/java/net/minecraft/server/ChunkMapDistance.java
index cf68c9105084d1823b5fc76b3f472a0f8ecd9568..d15bf949671c9a533573278d573376282bfed8c8 100644
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--- a/src/main/java/net/minecraft/server/ChunkMapDistance.java
+++ b/src/main/java/net/minecraft/server/ChunkMapDistance.java
@@ -33,7 +33,16 @@ public abstract class ChunkMapDistance {
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private final ChunkMapDistance.a ticketLevelTracker = new ChunkMapDistance.a();
private final ChunkMapDistance.b f = new ChunkMapDistance.b(8);
private final ChunkMapDistance.c g = new ChunkMapDistance.c(33);
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- private final Set<PlayerChunk> pendingChunkUpdates = Sets.newHashSet();
+ // Paper start use a queue, but still keep unique requirement
+ public final java.util.Queue<PlayerChunk> pendingChunkUpdates = new java.util.ArrayDeque<PlayerChunk>() {
+ @Override
+ public boolean add(PlayerChunk o) {
+ if (o.isUpdateQueued) return true;
+ o.isUpdateQueued = true;
+ return super.add(o);
+ }
+ };
+ // Paper end
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private final ChunkTaskQueueSorter i;
private final Mailbox<ChunkTaskQueueSorter.a<Runnable>> j;
private final Mailbox<ChunkTaskQueueSorter.b> k;
@@ -94,26 +103,14 @@ public abstract class ChunkMapDistance {
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;
}
+ // Paper start
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if (!this.pendingChunkUpdates.isEmpty()) {
- // CraftBukkit start
- // Iterate pending chunk updates with protection against concurrent modification exceptions
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- java.util.Iterator<PlayerChunk> iter = this.pendingChunkUpdates.iterator();
- int expectedSize = this.pendingChunkUpdates.size();
- do {
- PlayerChunk playerchunk = iter.next();
- iter.remove();
- expectedSize--;
-
- playerchunk.a(playerchunkmap);
-
- // Reset iterator if set was modified using add()
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- if (this.pendingChunkUpdates.size() != expectedSize) {
- expectedSize = this.pendingChunkUpdates.size();
- iter = this.pendingChunkUpdates.iterator();
- }
- } while (iter.hasNext());
- // CraftBukkit end
-
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+ while(!this.pendingChunkUpdates.isEmpty()) {
+ PlayerChunk remove = this.pendingChunkUpdates.remove();
+ remove.isUpdateQueued = false;
+ remove.a(playerchunkmap);
+ }
+ // Paper end
return true;
} else {
if (!this.l.isEmpty()) {
@@ -366,7 +363,7 @@ public abstract class ChunkMapDistance {
ObjectIterator objectiterator = this.a.long2ByteEntrySet().iterator();
while (objectiterator.hasNext()) {
- it.unimi.dsi.fastutil.longs.Long2ByteMap.Entry it_unimi_dsi_fastutil_longs_long2bytemap_entry = (it.unimi.dsi.fastutil.longs.Long2ByteMap.Entry) objectiterator.next();
+ Long2ByteMap.Entry it_unimi_dsi_fastutil_longs_long2bytemap_entry = (Long2ByteMap.Entry) objectiterator.next(); // Paper - decompile fix
byte b0 = it_unimi_dsi_fastutil_longs_long2bytemap_entry.getByteValue();
long j = it_unimi_dsi_fastutil_longs_long2bytemap_entry.getLongKey();
diff --git a/src/main/java/net/minecraft/server/PlayerChunk.java b/src/main/java/net/minecraft/server/PlayerChunk.java
index 49686f1f39417f8c7d6e0a58fb428fa34335fb0f..3b51e231551306e92cfe8fdf2e4e7777ab45d722 100644
--- a/src/main/java/net/minecraft/server/PlayerChunk.java
+++ b/src/main/java/net/minecraft/server/PlayerChunk.java
@@ -20,6 +20,7 @@ public class PlayerChunk {
private static final CompletableFuture<Either<Chunk, PlayerChunk.Failure>> UNLOADED_CHUNK_FUTURE = CompletableFuture.completedFuture(PlayerChunk.UNLOADED_CHUNK);
private static final List<ChunkStatus> CHUNK_STATUSES = ChunkStatus.a();
private static final PlayerChunk.State[] CHUNK_STATES = PlayerChunk.State.values();
+ boolean isUpdateQueued = false; // Paper
private final AtomicReferenceArray<CompletableFuture<Either<IChunkAccess, PlayerChunk.Failure>>> statusFutures;
private volatile CompletableFuture<Either<Chunk, PlayerChunk.Failure>> fullChunkFuture; private int fullChunkCreateCount; private volatile boolean isFullChunkReady; // Paper - cache chunk ticking stage
private volatile CompletableFuture<Either<Chunk, PlayerChunk.Failure>> tickingFuture; private volatile boolean isTickingReady; // Paper - cache chunk ticking stage