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https://github.com/PaperMC/Paper.git
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89d51d5f29
Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable. It should be noted that this decision does not promise all future exploits will be configurable.
76 lines
4.6 KiB
Diff
76 lines
4.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Andrew Steinborn <git@steinborn.me>
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Date: Sat, 3 Oct 2020 04:15:09 -0400
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Subject: [PATCH] Lazily track plugin scoreboards by default
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On servers with plugins that constantly churn through scoreboards, there is a risk of
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degraded GC performance due to the number of scoreboards held on by weak references.
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Most plugins don't even need the (vanilla) functionality that requires all plugin
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scoreboards to be tracked by the server. Instead, only track scoreboards when an
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objective is added with a non-dummy criteria.
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This is a breaking change, however the change is a much more sensible default. In case
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this breaks your workflow you can always force all scoreboards to be tracked with
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settings.track-plugin-scoreboards in paper.yml.
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diff --git a/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboard.java b/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboard.java
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index 5681630159bb52628e6cc391db324bbafe333414..c650fc3712de01184509a03f1d1b388859e163d7 100644
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--- a/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboard.java
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+++ b/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboard.java
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@@ -20,6 +20,7 @@ import org.bukkit.scoreboard.Team;
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public final class CraftScoreboard implements org.bukkit.scoreboard.Scoreboard {
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final Scoreboard board;
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+ boolean registeredGlobally = false; // Paper - Lazily track plugin scoreboards by default
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CraftScoreboard(Scoreboard board) {
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this.board = board;
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@@ -52,6 +53,12 @@ public final class CraftScoreboard implements org.bukkit.scoreboard.Scoreboard {
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Preconditions.checkArgument(renderType != null, "RenderType cannot be null");
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Preconditions.checkArgument(name.length() <= Short.MAX_VALUE, "The name '%s' is longer than the limit of 32767 characters (%s)", name, name.length());
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Preconditions.checkArgument(this.board.getObjective(name) == null, "An objective of name '%s' already exists", name);
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+ // Paper start - lazily track plugin scoreboards
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+ if (((CraftCriteria) criteria).criteria != net.minecraft.world.scores.criteria.ObjectiveCriteria.DUMMY && !this.registeredGlobally) {
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+ net.minecraft.server.MinecraftServer.getServer().server.getScoreboardManager().registerScoreboardForVanilla(this);
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+ this.registeredGlobally = true;
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+ }
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+ // Paper end - lazily track plugin scoreboards
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net.minecraft.world.scores.Objective objective = this.board.addObjective(name, ((CraftCriteria) criteria).criteria, io.papermc.paper.adventure.PaperAdventure.asVanilla(displayName), CraftScoreboardTranslations.fromBukkitRender(renderType), true, null);
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return new CraftObjective(this, objective);
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}
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diff --git a/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboardManager.java b/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboardManager.java
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index 40e348cae063bc1a814f8fcc3a2688c135f23bb5..c7ca6210d6ae37fe95068c9baa5fb654f95307e0 100644
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--- a/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboardManager.java
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+++ b/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboardManager.java
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@@ -30,6 +30,7 @@ public final class CraftScoreboardManager implements ScoreboardManager {
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public CraftScoreboardManager(MinecraftServer minecraftserver, net.minecraft.world.scores.Scoreboard scoreboardServer) {
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this.mainScoreboard = new CraftScoreboard(scoreboardServer);
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+ mainScoreboard.registeredGlobally = true; // Paper
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this.server = minecraftserver;
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this.scoreboards.add(this.mainScoreboard);
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}
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@@ -43,10 +44,22 @@ public final class CraftScoreboardManager implements ScoreboardManager {
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public CraftScoreboard getNewScoreboard() {
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org.spigotmc.AsyncCatcher.catchOp("scoreboard creation"); // Spigot
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CraftScoreboard scoreboard = new CraftScoreboard(new ServerScoreboard(this.server));
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- this.scoreboards.add(scoreboard);
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+ // Paper start
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+ if (io.papermc.paper.configuration.GlobalConfiguration.get().scoreboards.trackPluginScoreboards) {
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+ scoreboard.registeredGlobally = true;
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+ scoreboards.add(scoreboard);
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+ }
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+ // Paper end
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return scoreboard;
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}
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+ // Paper start
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+ public void registerScoreboardForVanilla(CraftScoreboard scoreboard) {
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+ org.spigotmc.AsyncCatcher.catchOp("scoreboard registration");
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+ scoreboards.add(scoreboard);
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+ }
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+ // Paper end
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+
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// CraftBukkit method
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public CraftScoreboard getPlayerBoard(CraftPlayer player) {
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CraftScoreboard board = this.playerBoards.get(player);
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