Paper/Spigot-Server-Patches/0575-Lazily-track-plugin-scoreboards-by-default.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Andrew Steinborn <git@steinborn.me>
Date: Sat, 3 Oct 2020 04:15:09 -0400
Subject: [PATCH] Lazily track plugin scoreboards by default
On servers with plugins that constantly churn through scoreboards, there is a risk of
degraded GC performance due to the number of scoreboards held on by weak references.
Most plugins don't even need the (vanilla) functionality that requires all plugin
scoreboards to be tracked by the server. Instead, only track scoreboards when an
objective is added with a non-dummy criteria.
This is a breaking change, however the change is a much more sensible default. In case
this breaks your workflow you can always force all scoreboards to be tracked with
settings.track-plugin-scoreboards in paper.yml.
diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
index 110cee7228b17a2378523883a1a83cc97da7608d..da48ad0e4725d9a9fcb2d60f82249be97be29033 100644
--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
@@ -457,4 +457,9 @@ public class PaperConfig {
private static void maxJoinsPerTick() {
maxJoinsPerTick = getInt("settings.max-joins-per-tick", 3);
}
+
+ public static boolean trackPluginScoreboards;
+ private static void trackPluginScoreboards() {
+ trackPluginScoreboards = getBoolean("settings.track-plugin-scoreboards", false);
+ }
}
diff --git a/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboard.java b/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboard.java
index 543792033497ff416396e8d6bee6b9e831faeec8..52eba9ca4452c917d883cdbf79e078f0f3eedc91 100644
--- a/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboard.java
+++ b/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboard.java
@@ -19,6 +19,7 @@ import org.bukkit.scoreboard.Team;
public final class CraftScoreboard implements org.bukkit.scoreboard.Scoreboard {
final Scoreboard board;
+ boolean registeredGlobally = false; // Paper
CraftScoreboard(Scoreboard board) {
this.board = board;
@@ -66,6 +67,12 @@ public final class CraftScoreboard implements org.bukkit.scoreboard.Scoreboard {
Validate.isTrue(board.getObjective(name) == null, "An objective of name '" + name + "' already exists");
CraftCriteria craftCriteria = CraftCriteria.getFromBukkit(criteria);
+ // Paper start
+ if (craftCriteria.criteria != net.minecraft.server.IScoreboardCriteria.DUMMY && !registeredGlobally) {
+ net.minecraft.server.MinecraftServer.getServer().server.getScoreboardManager().registerScoreboardForVanilla(this);
+ registeredGlobally = true;
+ }
+ // Paper end
ScoreboardObjective objective = board.registerObjective(name, craftCriteria.criteria, CraftChatMessage.fromStringOrNull(displayName), CraftScoreboardTranslations.fromBukkitRender(renderType));
return new CraftObjective(this, objective);*/ // Paper
return registerNewObjective(name, criteria, io.papermc.paper.adventure.PaperAdventure.LEGACY_SECTION_UXRC.deserialize(displayName)); // Paper
diff --git a/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboardManager.java b/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboardManager.java
index ca2be30609159e6ca98b363d75cbc3ac550bca31..6fa2e271f7f01cd0bf247e2071fa33bd8c5c6cbe 100644
--- a/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboardManager.java
+++ b/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboardManager.java
@@ -30,6 +30,7 @@ public final class CraftScoreboardManager implements ScoreboardManager {
public CraftScoreboardManager(MinecraftServer minecraftserver, net.minecraft.server.Scoreboard scoreboardServer) {
mainScoreboard = new CraftScoreboard(scoreboardServer);
+ mainScoreboard.registeredGlobally = true; // Paper
server = minecraftserver;
scoreboards.add(mainScoreboard);
}
@@ -43,10 +44,22 @@ public final class CraftScoreboardManager implements ScoreboardManager {
public CraftScoreboard getNewScoreboard() {
org.spigotmc.AsyncCatcher.catchOp("scoreboard creation"); // Spigot
CraftScoreboard scoreboard = new CraftScoreboard(new ScoreboardServer(server));
+ // Paper start
+ if (com.destroystokyo.paper.PaperConfig.trackPluginScoreboards) {
+ scoreboard.registeredGlobally = true;
scoreboards.add(scoreboard);
+ }
+ // Paper end
return scoreboard;
}
+ // Paper start
+ public void registerScoreboardForVanilla(CraftScoreboard scoreboard) {
+ org.spigotmc.AsyncCatcher.catchOp("scoreboard registration");
+ scoreboards.add(scoreboard);
+ }
+ // Paper end
+
// CraftBukkit method
public CraftScoreboard getPlayerBoard(CraftPlayer player) {
CraftScoreboard board = playerBoards.get(player);