From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Andrew Steinborn 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/org/bukkit/craftbukkit/scoreboard/CraftScoreboard.java b/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboard.java index 3f09420ba9268ac1dc5440c0739744370c0de319..052389310826ee6b97cf27dfd952e0101fb2d097 100644 --- a/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboard.java +++ b/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboard.java @@ -18,6 +18,7 @@ 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; @@ -50,6 +51,12 @@ public final class CraftScoreboard implements org.bukkit.scoreboard.Scoreboard { Preconditions.checkArgument(renderType != null, "RenderType cannot be null"); Preconditions.checkArgument(name.length() <= Short.MAX_VALUE, "The name '%s' is longer than the limit of 32767 characters (%s)", name, name.length()); Preconditions.checkArgument(this.board.getObjective(name) == null, "An objective of name '%s' already exists", name); + // Paper start - lazily track plugin scoreboards + if (((CraftCriteria) criteria).criteria != net.minecraft.world.scores.criteria.ObjectiveCriteria.DUMMY && !this.registeredGlobally) { + net.minecraft.server.MinecraftServer.getServer().server.getScoreboardManager().registerScoreboardForVanilla(this); + this.registeredGlobally = true; + } + // Paper end net.minecraft.world.scores.Objective objective = this.board.addObjective(name, ((CraftCriteria) criteria).criteria, io.papermc.paper.adventure.PaperAdventure.asVanilla(displayName), CraftScoreboardTranslations.fromBukkitRender(renderType)); return new CraftObjective(this, objective); } diff --git a/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboardManager.java b/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScoreboardManager.java index 282cb5e41fed48df890eaa30e42563289e065caa..afc43b52698db4bf7d89a576c2cbca0ddc9e04e2 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.world.scores.Scoreboard scoreboardServer) { this.mainScoreboard = new CraftScoreboard(scoreboardServer); + mainScoreboard.registeredGlobally = true; // Paper this.server = minecraftserver; this.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 ServerScoreboard(this.server)); - this.scoreboards.add(scoreboard); + // Paper start + if (io.papermc.paper.configuration.GlobalConfiguration.get().scoreboards.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 = this.playerBoards.get(player);