OpenSource/PaperMC
OpenSource/PaperMC
1
0
Fork 0
mirror of https://github.com/PaperMC/Paper.git synced 2024-12-02 13:07:06 +01:00
Code Issues Projects Releases Packages Wiki Activity

Improve Optimize Memory use logic to make iterator safer and fix bad plugins like P2

Browse source 
Accessing world state async is bad mkay. But we know you didn't do it city <3
This commit is contained in:
Aikar 2020-04-08 21:07:59 -04:00
parent d33ba160a4
commit 38c626229d
No known key found for this signature in database
GPG key ID: 401ADFC9891FAAFE
1 changed files with 71 additions and 18 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

89
Spigot-Server-Patches/0459-Optimize-PlayerChunkMap-memory-use-for-visibleChunks.patch
View file

@ -1,4 +1,4 @@
From d4a80e85b8785b079769629ecf004f73fde66efd Mon Sep 17 00:00:00 2001
From cee599dd7b5c962429d797a091ab740da42179a3 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 8 Apr 2020 03:06:30 -0400
Subject: [PATCH] Optimize PlayerChunkMap memory use for visibleChunks
@ -12,7 +12,7 @@ as before with only 2 small objects created (FastIterator/MapEntry)
This should result in siginificant memory use reduction and improved GC behavior.
diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
index 1dcd0980ec..59055cccc5 100644
index 1dcd0980ec..e627440c41 100644
--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
@@ -669,7 +669,7 @@ public class ChunkProviderServer extends IChunkProvider {
@ -20,7 +20,7 @@ index 1dcd0980ec..59055cccc5 100644
};
// Paper end
- this.playerChunkMap.f().forEach((playerchunk) -> {
+ this.playerChunkMap.visibleChunks.values().forEach((playerchunk) -> { // Paper - no need to wrap iterator
+ this.playerChunkMap.forEachVisibleChunk((playerchunk) -> { // Paper - safe iterator incase chunk loads, also no wrapping
Optional<Chunk> optional = ((Either) playerchunk.b().getNow(PlayerChunk.UNLOADED_CHUNK)).left();
if (optional.isPresent()) {
@ -38,7 +38,7 @@ index b9d5844520..9980e4c277 100644
List<PlayerChunk> allChunks = new ArrayList<>(visibleChunks.values());
List<EntityPlayer> players = world.players;
diff --git a/src/main/java/net/minecraft/server/PlayerChunkMap.java b/src/main/java/net/minecraft/server/PlayerChunkMap.java
index e1e4ea793a..0aa6487d5b 100644
index e1e4ea793a..ce645a69bd 100644
--- a/src/main/java/net/minecraft/server/PlayerChunkMap.java
+++ b/src/main/java/net/minecraft/server/PlayerChunkMap.java
@@ -56,7 +56,8 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
@ -47,7 +47,7 @@ index e1e4ea793a..0aa6487d5b 100644
public final Long2ObjectLinkedOpenHashMap<PlayerChunk> updatingChunks = new Long2ObjectLinkedOpenHashMap();
- public volatile Long2ObjectLinkedOpenHashMap<PlayerChunk> visibleChunks;
+ public final Long2ObjectLinkedOpenHashMap<PlayerChunk> visibleChunks = new Long2ObjectLinkedOpenHashMap(); // Paper - remove copying, make mt safe
+ public volatile Long2ObjectLinkedOpenHashMap<PlayerChunk> visibleChunksClone; // Paper - remove copying, make mt safe
+ public transient Long2ObjectLinkedOpenHashMap<PlayerChunk> visibleChunksClone; // Paper - remove copying, make mt safe
private final Long2ObjectLinkedOpenHashMap<PlayerChunk> pendingUnload;
final LongSet loadedChunks; // Paper - private -> package
public final WorldServer world;
@ -60,12 +60,29 @@ index e1e4ea793a..0aa6487d5b 100644
this.pendingUnload = new Long2ObjectLinkedOpenHashMap();
this.loadedChunks = new LongOpenHashSet();
this.unloadQueue = new LongOpenHashSet();
@@ -262,8 +263,32 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
@@ -262,8 +263,49 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
return (PlayerChunk) this.updatingChunks.get(i);
}
+ // Paper start - remove cloning of visible chunks unless accessed as a collection async
+ private static final boolean DEBUG_ASYNC_VISIBLE_CHUNKS = Boolean.getBoolean("paper.debug-async-visible-chunks");
+ private boolean isIterating = false;
+ public void forEachVisibleChunk(java.util.function.Consumer<PlayerChunk> consumer) {
+ org.spigotmc.AsyncCatcher.catchOp("forEachVisibleChunk");
+ boolean prev = isIterating;
+ boolean wasUpdating = updatingChunksModified;
+ isIterating = true;
+ try {
+ for (PlayerChunk value : this.visibleChunks.values()) {
+ consumer.accept(value);
+ }
+ } finally {
+ this.isIterating = prev;
+ if (!this.isIterating && updatingChunksModified && !wasUpdating) {
+ this.updateVisibleChunks();
+ }
+ }
+ }
+ public Long2ObjectLinkedOpenHashMap<PlayerChunk> getVisibleChunks() {
+ if (Thread.currentThread() == this.world.serverThread) {
+ return this.visibleChunks;
@ -93,7 +110,7 @@ index e1e4ea793a..0aa6487d5b 100644
return (PlayerChunk) this.visibleChunks.get(i);
}
@@ -444,8 +469,9 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
@@ -444,8 +486,9 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
// Paper end
protected void save(boolean flag) {
@ -104,7 +121,7 @@ index e1e4ea793a..0aa6487d5b 100644
MutableBoolean mutableboolean = new MutableBoolean();
do {
@@ -473,7 +499,7 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
@@ -473,7 +516,7 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
// this.i(); // Paper - nuke IOWorker
PlayerChunkMap.LOGGER.info("ThreadedAnvilChunkStorage ({}): All chunks are saved", this.w.getName());
} else {
@ -113,8 +130,14 @@ index e1e4ea793a..0aa6487d5b 100644
IChunkAccess ichunkaccess = (IChunkAccess) playerchunk.getChunkSave().getNow(null); // CraftBukkit - decompile error
if (ichunkaccess instanceof ProtoChunkExtension || ichunkaccess instanceof Chunk) {
@@ -643,7 +669,14 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
if (!this.updatingChunksModified) {
@@ -639,11 +682,19 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
});
}
+ protected boolean updateVisibleChunks() { return b(); } // Paper - OBFHELPER
protected boolean b() {
- if (!this.updatingChunksModified) {
+ if (!this.updatingChunksModified || this.isIterating) { // Paper
return false;
} else {
- this.visibleChunks = this.updatingChunks.clone();
@ -129,7 +152,7 @@ index e1e4ea793a..0aa6487d5b 100644
this.updatingChunksModified = false;
return true;
}
@@ -1104,12 +1137,12 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
@@ -1104,12 +1155,12 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
}
protected Iterable<PlayerChunk> f() {
@ -145,30 +168,60 @@ index e1e4ea793a..0aa6487d5b 100644
while (objectbidirectionaliterator.hasNext()) {
Entry<PlayerChunk> entry = (Entry) objectbidirectionaliterator.next();
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index 051506fce8..c0e8eb85d7 100644
index 051506fce8..630d6470a4 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -290,6 +290,7 @@ public class CraftWorld implements World {
@@ -74,6 +74,7 @@ import net.minecraft.server.GameRules;
import net.minecraft.server.GroupDataEntity;
import net.minecraft.server.IBlockData;
import net.minecraft.server.IChunkAccess;
+import net.minecraft.server.MCUtil;
import net.minecraft.server.MinecraftKey;
import net.minecraft.server.MovingObjectPosition;
import net.minecraft.server.PacketPlayOutCustomSoundEffect;
@@ -290,6 +291,7 @@ public class CraftWorld implements World {
return ret;
}
public int getTileEntityCount() {
+ org.spigotmc.AsyncCatcher.catchOp("getTileEntityCount");
+ return MCUtil.ensureMain(() -> {
// We don't use the full world tile entity list, so we must iterate chunks
Long2ObjectLinkedOpenHashMap<PlayerChunk> chunks = world.getChunkProvider().playerChunkMap.visibleChunks;
int size = 0;
@@ -306,6 +307,7 @@ public class CraftWorld implements World {
@@ -301,11 +303,13 @@ public class CraftWorld implements World {
size += chunk.tileEntities.size();
}
return size;
+ });
}
public int getTickableTileEntityCount() {
return world.tileEntityListTick.size();
}
public int getChunkCount() {
+ org.spigotmc.AsyncCatcher.catchOp("getChunkCount");
+ return MCUtil.ensureMain(() -> {
int ret = 0;
for (PlayerChunk chunkHolder : world.getChunkProvider().playerChunkMap.visibleChunks.values()) {
@@ -432,6 +434,7 @@ public class CraftWorld implements World {
@@ -314,7 +318,7 @@ public class CraftWorld implements World {
}
}
- return ret;
+ return ret; });
}
public int getPlayerCount() {
return world.players.size();
@@ -432,6 +436,14 @@ public class CraftWorld implements World {
@Override
public Chunk[] getLoadedChunks() {
+ org.spigotmc.AsyncCatcher.catchOp("getLoadedChunks"); // Paper
+ // Paper start
+ if (Thread.currentThread() != world.getMinecraftWorld().serverThread) {
+ synchronized (world.getChunkProvider().playerChunkMap.visibleChunks) {
+ Long2ObjectLinkedOpenHashMap<PlayerChunk> chunks = world.getChunkProvider().playerChunkMap.visibleChunks;
+ return chunks.values().stream().map(PlayerChunk::getFullChunk).filter(Objects::nonNull).map(net.minecraft.server.Chunk::getBukkitChunk).toArray(Chunk[]::new);
+ }
+ }
+ // Paper end
Long2ObjectLinkedOpenHashMap<PlayerChunk> chunks = world.getChunkProvider().playerChunkMap.visibleChunks;
return chunks.values().stream().map(PlayerChunk::getFullChunk).filter(Objects::nonNull).map(net.minecraft.server.Chunk::getBukkitChunk).toArray(Chunk[]::new);
}