Mirror von
https://github.com/PaperMC/Paper.git
synchronisiert 2024-12-15 02:50:09 +01:00
c5a10665b8
Spigot still maintains some partial implementation of "tick skipping", a practice in which the MinecraftServer.currentTick field is updated not by an increment of one per actual tick, but instead set to System.currentTimeMillis() / 50. This behaviour means that the tracked tick may "skip" a tick value in case a previous tick took more than the expected 50ms. To compensate for this in important paths, spigot/craftbukkit implements "wall-time". Instead of incrementing/decrementing ticks on block entities/entities by one for each call to their tick() method, they instead increment/decrement important values, like an ItemEntity's age or pickupDelay, by the difference of `currentTick - lastTick`, where `lastTick` is the value of `currentTick` during the last tick() call. These "fixes" however do not play nicely with minecraft's simulation distance as entities/block entities implementing the above behaviour would "catch up" their values when moving from a non-ticking chunk to a ticking one as their `lastTick` value remains stuck on the last tick in a ticking chunk and hence lead to a large "catch up" once ticked again. Paper completely removes the "tick skipping" behaviour (See patch "Further-improve-server-tick-loop"), making the above precautions completely unnecessary, which also rids paper of the previous described incompatibility with non-ticking chunks.
66 Zeilen
4.1 KiB
Diff
66 Zeilen
4.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Mon, 13 Jul 2020 06:22:54 -0700
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Subject: [PATCH] Fix AdvancementDataPlayer leak due from quitting early in
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login
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Move the criterion storage to the AdvancementDataPlayer object
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itself, so the criterion object stores no references - and thus
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needs no cleanup.
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diff --git a/src/main/java/net/minecraft/advancements/critereon/SimpleCriterionTrigger.java b/src/main/java/net/minecraft/advancements/critereon/SimpleCriterionTrigger.java
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index 9a387d5dc0925304d4163e3caa22206aaa68e3b7..f43053ba082f9772b6ec02828fa2d6f387c32d26 100644
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--- a/src/main/java/net/minecraft/advancements/critereon/SimpleCriterionTrigger.java
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+++ b/src/main/java/net/minecraft/advancements/critereon/SimpleCriterionTrigger.java
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@@ -15,32 +15,32 @@ import net.minecraft.server.level.ServerPlayer;
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import net.minecraft.world.level.storage.loot.LootContext;
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public abstract class SimpleCriterionTrigger<T extends SimpleCriterionTrigger.SimpleInstance> implements CriterionTrigger<T> {
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- private final Map<PlayerAdvancements, Set<CriterionTrigger.Listener<T>>> players = Maps.newIdentityHashMap();
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+ // private final Map<PlayerAdvancements, Set<CriterionTrigger.Listener<T>>> players = Maps.newIdentityHashMap(); // Paper - fix AdvancementDataPlayer leak; moved into AdvancementDataPlayer to fix memory leak
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@Override
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public final void addPlayerListener(PlayerAdvancements manager, CriterionTrigger.Listener<T> conditions) {
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- this.players.computeIfAbsent(manager, managerx -> Sets.newHashSet()).add(conditions);
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+ manager.criterionData.computeIfAbsent(this, managerx -> Sets.newHashSet()).add(conditions); // Paper - fix AdvancementDataPlayer leak
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}
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@Override
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public final void removePlayerListener(PlayerAdvancements manager, CriterionTrigger.Listener<T> conditions) {
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- Set<CriterionTrigger.Listener<T>> set = this.players.get(manager);
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+ Set<CriterionTrigger.Listener<T>> set = (Set) manager.criterionData.get(this); // Paper - fix AdvancementDataPlayer leak
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if (set != null) {
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set.remove(conditions);
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if (set.isEmpty()) {
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- this.players.remove(manager);
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+ manager.criterionData.remove(this); // Paper - fix AdvancementDataPlayer leak
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}
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}
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}
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@Override
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public final void removePlayerListeners(PlayerAdvancements tracker) {
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- this.players.remove(tracker);
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+ tracker.criterionData.remove(this); // Paper - fix AdvancementDataPlayer leak
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}
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protected void trigger(ServerPlayer player, Predicate<T> predicate) {
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PlayerAdvancements playerAdvancements = player.getAdvancements();
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- Set<CriterionTrigger.Listener<T>> set = this.players.get(playerAdvancements);
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+ Set<CriterionTrigger.Listener<T>> set = (Set) playerAdvancements.criterionData.get(this); // Paper - fix AdvancementDataPlayer leak
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if (set != null && !set.isEmpty()) {
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LootContext lootContext = EntityPredicate.createContext(player, player);
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List<CriterionTrigger.Listener<T>> list = null;
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diff --git a/src/main/java/net/minecraft/server/PlayerAdvancements.java b/src/main/java/net/minecraft/server/PlayerAdvancements.java
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index 4c85abf29441645039b6a554a50e1d3274229de6..d85fb1e2ea0eaef81e9039b47d18f83507e05a59 100644
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--- a/src/main/java/net/minecraft/server/PlayerAdvancements.java
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+++ b/src/main/java/net/minecraft/server/PlayerAdvancements.java
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@@ -63,6 +63,7 @@ public class PlayerAdvancements {
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private AdvancementHolder lastSelectedTab;
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private boolean isFirstPacket = true;
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private final Codec<PlayerAdvancements.Data> codec;
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+ public final Map<net.minecraft.advancements.critereon.SimpleCriterionTrigger<?>, Set<CriterionTrigger.Listener<?>>> criterionData = new java.util.IdentityHashMap<>(); // Paper - fix advancement data player leakage
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public PlayerAdvancements(DataFixer dataFixer, PlayerList playerManager, ServerAdvancementManager advancementLoader, Path filePath, ServerPlayer owner) {
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this.playerList = playerManager;
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