PaperMC/patches/server/0331-ChunkMapDistance-CME.patch
2021-09-03 19:57:21 +02:00

84 lines
4.4 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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/level/ChunkHolder.java b/src/main/java/net/minecraft/server/level/ChunkHolder.java
index ffa3dc07ec566464ce10abe793de61efa9673fe9..d226247b93a2f1f7e039b0963d2e27b5dd11c15e 100644
--- a/src/main/java/net/minecraft/server/level/ChunkHolder.java
+++ b/src/main/java/net/minecraft/server/level/ChunkHolder.java
@@ -73,6 +73,7 @@ public class ChunkHolder {
private boolean resendLight;
private CompletableFuture<Void> pendingFullStateConfirmation;
+ boolean isUpdateQueued = false; // Paper
private final ChunkMap chunkMap; // Paper
public ChunkHolder(ChunkPos pos, int level, LevelHeightAccessor world, LevelLightEngine lightingProvider, ChunkHolder.LevelChangeListener levelUpdateListener, ChunkHolder.PlayerProvider playersWatchingChunkProvider) {
diff --git a/src/main/java/net/minecraft/server/level/DistanceManager.java b/src/main/java/net/minecraft/server/level/DistanceManager.java
index 48bb57d3a431ea466425eb7da821c0aea900bd4c..45c7ebe67019cdbe88b6617a95d5c40d3a68286c 100644
--- a/src/main/java/net/minecraft/server/level/DistanceManager.java
+++ b/src/main/java/net/minecraft/server/level/DistanceManager.java
@@ -47,7 +47,16 @@ public abstract class DistanceManager {
private final DistanceManager.ChunkTicketTracker ticketTracker = new DistanceManager.ChunkTicketTracker();
private final DistanceManager.FixedPlayerDistanceChunkTracker naturalSpawnChunkCounter = new DistanceManager.FixedPlayerDistanceChunkTracker(8);
private final DistanceManager.PlayerTicketTracker playerTicketManager = new DistanceManager.PlayerTicketTracker(33);
- final Set<ChunkHolder> chunksToUpdateFutures = Sets.newHashSet();
+ // Paper start use a queue, but still keep unique requirement
+ public final java.util.Queue<ChunkHolder> pendingChunkUpdates = new java.util.ArrayDeque<ChunkHolder>() {
+ @Override
+ public boolean add(ChunkHolder o) {
+ if (o.isUpdateQueued) return true;
+ o.isUpdateQueued = true;
+ return super.add(o);
+ }
+ };
+ // Paper end
final ChunkTaskPriorityQueueSorter ticketThrottler;
final ProcessorHandle<ChunkTaskPriorityQueueSorter.Message<Runnable>> ticketThrottlerInput;
final ProcessorHandle<ChunkTaskPriorityQueueSorter.Release> ticketThrottlerReleaser;
@@ -108,26 +117,14 @@ public abstract class DistanceManager {
;
}
- if (!this.chunksToUpdateFutures.isEmpty()) {
- // CraftBukkit start
- // Iterate pending chunk updates with protection against concurrent modification exceptions
- java.util.Iterator<ChunkHolder> iter = this.chunksToUpdateFutures.iterator();
- int expectedSize = this.chunksToUpdateFutures.size();
- do {
- ChunkHolder playerchunk = iter.next();
- iter.remove();
- expectedSize--;
-
- playerchunk.updateFutures(playerchunkmap, this.mainThreadExecutor);
-
- // Reset iterator if set was modified using add()
- if (this.chunksToUpdateFutures.size() != expectedSize) {
- expectedSize = this.chunksToUpdateFutures.size();
- iter = this.chunksToUpdateFutures.iterator();
- }
- } while (iter.hasNext());
- // CraftBukkit end
-
+ // Paper start
+ if (!this.pendingChunkUpdates.isEmpty()) {
+ while(!this.pendingChunkUpdates.isEmpty()) {
+ ChunkHolder remove = this.pendingChunkUpdates.remove();
+ remove.isUpdateQueued = false;
+ remove.updateFutures(playerchunkmap, this.mainThreadExecutor);
+ }
+ // Paper end
return true;
} else {
if (!this.ticketsToRelease.isEmpty()) {
@@ -385,7 +382,7 @@ public abstract class DistanceManager {
if (k != level) {
playerchunk = DistanceManager.this.updateChunkScheduling(id, level, playerchunk, k);
if (playerchunk != null) {
- DistanceManager.this.chunksToUpdateFutures.add(playerchunk);
+ DistanceManager.this.pendingChunkUpdates.add(playerchunk);
}
}