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Improve Plugin Ticket Management

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Now supports async chunk access even though doing that is bad
and shouldn't be done anyways since we force you back to main, itll
now just delay the ticket add to main the same way.

Now only add the ticket if the plugin CAUSED the chunk load, so no longer
adds ticket if the chunk was already loaded.

Additionally, cap chunk ticket limits to 1 second (Effectively ignoring chunk-gc config
unless the config is lower than 20 ticks)

Fixes #3533
Dieser Commit ist enthalten in:
Aikar 2020-06-09 21:13:51 -04:00
Ursprung b20529f3d3
Commit c5c909c9af
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GPG-Schlüssel-ID: 401ADFC9891FAAFE
2 geänderte Dateien mit 122 neuen und 65 gelöschten Zeilen
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122
Spigot-Server-Patches/0539-Add-Plugin-Tickets-to-API-Chunk-Methods.patch Normale Datei
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@ -0,0 +1,122 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Tue, 9 Jun 2020 03:33:03 -0400
Subject: [PATCH] Add Plugin Tickets to API Chunk Methods
Like previous versions, plugins loading chunks kept them loaded until
they garbage collected to avoid constant spamming of chunk loads
This adds tickets to a few more places so that they can be unloaded.
Additionally, this drops their ticket level to BORDER so they wont be ticking
so they will just sit inactive instead.
Using .loadChunk to keep a chunk ticking was a horrible idea for upstream
when we have TWO methods that are able to do that already in the API.
Also reduce their collection count down to a maximum of 1 second. Barely
anyone knows what chunk-gc is in bukkit.yml as its less relevant now, and
since this wasn't spigot behavior, this is safe to mostly ignore (unless someone
wants it to collect even faster, they can restore that setting back to 1 instead of 20+)
Not adding it to .getType() though to keep behavior consistent with vanilla for performance reasons.
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 894917c8891a951edb251f019529d0f7bec7037d..568aefdf698facfc36edacc9332e83196c0d80bc 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -318,7 +318,7 @@ public final class CraftServer implements Server {
ambientSpawn = configuration.getInt("spawn-limits.ambient");
console.autosavePeriod = configuration.getInt("ticks-per.autosave");
warningState = WarningState.value(configuration.getString("settings.deprecated-verbose"));
- TicketType.PLUGIN.loadPeriod = configuration.getInt("chunk-gc.period-in-ticks");
+ TicketType.PLUGIN.loadPeriod = Math.min(20, configuration.getInt("chunk-gc.period-in-ticks")); // Paper - cap plugin loads to 1 second
minimumAPI = configuration.getString("settings.minimum-api");
loadIcon();
}
@@ -796,7 +796,7 @@ public final class CraftServer implements Server {
waterAnimalSpawn = configuration.getInt("spawn-limits.water-animals");
ambientSpawn = configuration.getInt("spawn-limits.ambient");
warningState = WarningState.value(configuration.getString("settings.deprecated-verbose"));
- TicketType.PLUGIN.loadPeriod = configuration.getInt("chunk-gc.period-in-ticks");
+ TicketType.PLUGIN.loadPeriod = Math.min(20, configuration.getInt("chunk-gc.period-in-ticks")); // Paper - cap plugin loads to 1 second
minimumAPI = configuration.getString("settings.minimum-api");
printSaveWarning = false;
console.autosavePeriod = configuration.getInt("ticks-per.autosave");
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index d3c5b7d1904a6cbd65db406639ed2ba90ec9fd2a..f4a1be34f08551692c1612cffea04fdcf71f2cd4 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -399,9 +399,22 @@ public class CraftWorld implements World {
@Override
public Chunk getChunkAt(int x, int z) {
- return this.world.getChunkProvider().getChunkAt(x, z, true).bukkitChunk;
+ // Paper start - add ticket to hold chunk for a little while longer if plugin accesses it
+ net.minecraft.server.Chunk chunk = world.getChunkProvider().getChunkAtIfLoadedImmediately(x, z);
+ if (chunk == null) {
+ addTicket(x, z);
+ chunk = this.world.getChunkProvider().getChunkAt(x, z, true);
+ }
+ return chunk.bukkitChunk;
+ // Paper end
}
+ // Paper start
+ private void addTicket(int x, int z) {
+ MCUtil.MAIN_EXECUTOR.execute(() -> world.getChunkProvider().addTicket(TicketType.PLUGIN, new ChunkCoordIntPair(x, z), 0, Unit.INSTANCE)); // Paper
+ }
+ // Paper end
+
@Override
public Chunk getChunkAt(Block block) {
Preconditions.checkArgument(block != null, "null block");
@@ -476,7 +489,7 @@ public class CraftWorld implements World {
org.spigotmc.AsyncCatcher.catchOp("chunk unload"); // Spigot
net.minecraft.server.IChunkAccess chunk = world.getChunkProvider().getChunkAtIfLoadedImmediately(x, z); // Paper
if (chunk != null) {
- world.getChunkProvider().removeTicket(TicketType.PLUGIN, chunk.getPos(), 1, Unit.INSTANCE);
+ world.getChunkProvider().removeTicket(TicketType.PLUGIN, chunk.getPos(), 0, Unit.INSTANCE); // Paper
}
return true;
@@ -553,10 +566,12 @@ public class CraftWorld implements World {
org.spigotmc.AsyncCatcher.catchOp("chunk load"); // Spigot
// Paper start - Optimize this method
ChunkCoordIntPair chunkPos = new ChunkCoordIntPair(x, z);
+ IChunkAccess immediate = world.getChunkProvider().getChunkAtIfLoadedImmediately(x, z); // Paper
+ if (immediate != null) return true; // Paper
if (!generate) {
- IChunkAccess immediate = world.getChunkProvider().getChunkAtImmediately(x, z);
+ //IChunkAccess immediate = world.getChunkProvider().getChunkAtImmediately(x, z); // Paper
if (immediate == null) {
immediate = world.getChunkProvider().playerChunkMap.getUnloadingChunk(x, z);
}
@@ -564,7 +579,7 @@ public class CraftWorld implements World {
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.getChunkProvider().addTicket(TicketType.PLUGIN, chunkPos, 0, Unit.INSTANCE); // Paper
world.getChunkAt(x, z); // make sure we're at ticket level 32 or lower
return true;
}
@@ -591,7 +606,7 @@ public class CraftWorld implements World {
// we do this so we do not re-read the chunk data on disk
}
- world.getChunkProvider().addTicket(TicketType.PLUGIN, chunkPos, 1, Unit.INSTANCE);
+ world.getChunkProvider().addTicket(TicketType.PLUGIN, chunkPos, 0, Unit.INSTANCE); // Paper
world.getChunkProvider().getChunkAt(x, z, ChunkStatus.FULL, true);
return true;
// Paper end
@@ -2490,6 +2505,7 @@ public class CraftWorld implements World {
}
return this.world.getChunkProvider().getChunkAtAsynchronously(x, z, gen, urgent).thenComposeAsync((either) -> {
net.minecraft.server.Chunk chunk = (net.minecraft.server.Chunk) either.left().orElse(null);
+ if (chunk != null) addTicket(x, z); // Paper
return CompletableFuture.completedFuture(chunk == null ? null : chunk.getBukkitChunk());
}, MinecraftServer.getServer());
}

65
Spigot-Server-Patches/0539-Add-PluginTickets-to-API-Chunk-Methods.patch
Datei anzeigen

@ -1,65 +0,0 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Tue, 9 Jun 2020 03:33:03 -0400
Subject: [PATCH] Add PluginTickets to API Chunk Methods
Like previous versions, plugins loading chunks kept them loaded until
they garbage collected to avoid constant spamming of chunk loads
This adds tickets to a few more places so that they can be unloaded.
Additionally, this drops their ticket level to BORDER so they wont be ticking
so they will just sit inactive instead.
Using .loadChunk to keep a chunk ticking was a horrible idea for upstream
when we have TWO methods that are able to do that already in the API.
Not adding it to .getType() though to keep behavior consistent with vanilla.
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index d3c5b7d1904a6cbd65db406639ed2ba90ec9fd2a..314700041068c79898b555538e8f327693cf9898 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -399,6 +399,7 @@ public class CraftWorld implements World {
@Override
public Chunk getChunkAt(int x, int z) {
+ world.getChunkProvider().addTicket(TicketType.PLUGIN, new ChunkCoordIntPair(x, z), 0, Unit.INSTANCE); // Paper
return this.world.getChunkProvider().getChunkAt(x, z, true).bukkitChunk;
}
@@ -476,7 +477,7 @@ public class CraftWorld implements World {
org.spigotmc.AsyncCatcher.catchOp("chunk unload"); // Spigot
net.minecraft.server.IChunkAccess chunk = world.getChunkProvider().getChunkAtIfLoadedImmediately(x, z); // Paper
if (chunk != null) {
- world.getChunkProvider().removeTicket(TicketType.PLUGIN, chunk.getPos(), 1, Unit.INSTANCE);
+ world.getChunkProvider().removeTicket(TicketType.PLUGIN, chunk.getPos(), 0, Unit.INSTANCE); // Paper
}
return true;
@@ -564,7 +565,7 @@ public class CraftWorld implements World {
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.getChunkProvider().addTicket(TicketType.PLUGIN, chunkPos, 0, Unit.INSTANCE); // Paper
world.getChunkAt(x, z); // make sure we're at ticket level 32 or lower
return true;
}
@@ -591,7 +592,7 @@ public class CraftWorld implements World {
// we do this so we do not re-read the chunk data on disk
}
- world.getChunkProvider().addTicket(TicketType.PLUGIN, chunkPos, 1, Unit.INSTANCE);
+ world.getChunkProvider().addTicket(TicketType.PLUGIN, chunkPos, 0, Unit.INSTANCE); // Paper
world.getChunkProvider().getChunkAt(x, z, ChunkStatus.FULL, true);
return true;
// Paper end
@@ -2477,6 +2478,7 @@ public class CraftWorld implements World {
if (err != null) {
future.completeExceptionally(err);
} else {
+ world.getChunkProvider().addTicket(TicketType.PLUGIN, new ChunkCoordIntPair(x, z), 0, Unit.INSTANCE); // Paper
future.complete(chunk);
}
});