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77a5779e24
Upstream has released updates that appear to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing Bukkit Changes: 2ec53f49 PR-1050: Fix empty result check for Complex Recipes 10671012 PR-1044: Add CrafterCraftEvent 4d87ffe0 Use correct method in JavaDoc ae5e5817 SPIGOT-7850: Add API for Bogged shear state 46b6d445 SPIGOT-7837: Support data pack banner patterns d5d0cefc Fix JavaDoc error b3c2b83d PR-1036: Add API for InventoryView derivatives 1fe2c75a SPIGOT-7809: Add ShieldMeta CraftBukkit Changes: 8ee6fd1b8 SPIGOT-7857: Improve ItemMeta block data deserialization 8f26c30c6 SPIGOT-7857: Fix spurious internal NBT tag when deserializing BlockStateMeta 759061b93 SPIGOT-7855: Fire does not spread or burn blocks 00fc9fb64 SPIGOT-7853: AnvilInventory#getRepairCost() always returns 0 7501e2e04 PR-1450: Add CrafterCraftEvent 8c51673e7 SPIGOT-5731: PortalCreateEvent#getEntity returns null for nether portals ignited by flint and steel d53d0d0b1 PR-1456: Fix inverted logic in CraftCrafterView#setSlotDisabled 682a678c8 SPIGOT-7850: Add API for Bogged shear state fccf5243a SPIGOT-7837: Support data pack banner patterns 9c3bd4390 PR-1431: Add API for InventoryView derivatives 0cc6acbc4 SPIGOT-7849: Fix FoodComponent serialize with "using-converts-to" using null 2c5474952 Don't rely on tags for CraftItemMetas 20d107e46 SPIGOT-7846: Fix ItemMeta for hanging signs 76f59e315 Remove redundant clone in Dropper InventoryMoveItemEvent e61a53d25 SPIGOT-7817: Call InventoryMoveItemEvent for Crafters 894682e2d SPIGOT-7839: Remove redundant Java version checks 2c12b2187 SPIGOT-7809: Add ShieldMeta and fix setting shield base colours Spigot Changes: fb8fb722 Rebuild patches 34bd42b7 SPIGOT-7835: Fix issue with custom hopper settings
67 lines
3.7 KiB
Diff
67 lines
3.7 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Mon, 6 Jul 2020 18:36:41 -0400
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Subject: [PATCH] Fix Concurrency issue in ShufflingList
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if multiple threads from worldgen sort at same time, it will crash.
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So make a copy of the list for sorting purposes.
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diff --git a/src/main/java/net/minecraft/world/entity/ai/behavior/GateBehavior.java b/src/main/java/net/minecraft/world/entity/ai/behavior/GateBehavior.java
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index 334962f1bf5988059fec506f0d3aaf4302205220..6a270c9adb044a6e0b1c8e09b9106d51989fd761 100644
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--- a/src/main/java/net/minecraft/world/entity/ai/behavior/GateBehavior.java
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+++ b/src/main/java/net/minecraft/world/entity/ai/behavior/GateBehavior.java
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@@ -18,7 +18,7 @@ public class GateBehavior<E extends LivingEntity> implements BehaviorControl<E>
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private final Set<MemoryModuleType<?>> exitErasedMemories;
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private final GateBehavior.OrderPolicy orderPolicy;
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private final GateBehavior.RunningPolicy runningPolicy;
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- private final ShufflingList<BehaviorControl<? super E>> behaviors = new ShufflingList<>();
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+ private final ShufflingList<BehaviorControl<? super E>> behaviors = new ShufflingList<>(false); // Paper - Fix Concurrency issue in ShufflingList during worldgen
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private Behavior.Status status = Behavior.Status.STOPPED;
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public GateBehavior(
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diff --git a/src/main/java/net/minecraft/world/entity/ai/behavior/ShufflingList.java b/src/main/java/net/minecraft/world/entity/ai/behavior/ShufflingList.java
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index 195eea55fabc7a9a665e0a8f04934a3aaf9f8b71..3fac11bf02652b5f51f30f99bdf516504467d0d2 100644
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--- a/src/main/java/net/minecraft/world/entity/ai/behavior/ShufflingList.java
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+++ b/src/main/java/net/minecraft/world/entity/ai/behavior/ShufflingList.java
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@@ -16,12 +16,25 @@ import net.minecraft.util.RandomSource;
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public class ShufflingList<U> implements Iterable<U> {
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protected final List<ShufflingList.WeightedEntry<U>> entries;
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private final RandomSource random = RandomSource.create();
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+ private final boolean isUnsafe; // Paper - Fix Concurrency issue in ShufflingList during worldgen
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public ShufflingList() {
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+ // Paper start - Fix Concurrency issue in ShufflingList during worldgen
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+ this(true);
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+ }
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+ public ShufflingList(boolean isUnsafe) {
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+ this.isUnsafe = isUnsafe;
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+ // Paper end - Fix Concurrency issue in ShufflingList during worldgen
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this.entries = Lists.newArrayList();
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}
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private ShufflingList(List<ShufflingList.WeightedEntry<U>> list) {
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+ // Paper start - Fix Concurrency issue in ShufflingList during worldgen
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+ this(list, true);
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+ }
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+ private ShufflingList(List<ShufflingList.WeightedEntry<U>> list, boolean isUnsafe) {
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+ this.isUnsafe = isUnsafe;
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+ // Paper end - Fix Concurrency issue in ShufflingList during worldgen
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this.entries = Lists.newArrayList(list);
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}
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@@ -35,9 +48,12 @@ public class ShufflingList<U> implements Iterable<U> {
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}
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public ShufflingList<U> shuffle() {
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- this.entries.forEach(entry -> entry.setRandom(this.random.nextFloat()));
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- this.entries.sort(Comparator.comparingDouble(ShufflingList.WeightedEntry::getRandWeight));
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- return this;
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+ // Paper start - Fix Concurrency issue in ShufflingList during worldgen
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+ List<ShufflingList.WeightedEntry<U>> list = this.isUnsafe ? Lists.newArrayList(this.entries) : this.entries;
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+ list.forEach(entry -> entry.setRandom(this.random.nextFloat()));
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+ list.sort(Comparator.comparingDouble(ShufflingList.WeightedEntry::getRandWeight));
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+ return this.isUnsafe ? new ShufflingList<>(list, this.isUnsafe) : this;
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+ // Paper end - Fix Concurrency issue in ShufflingList during worldgen
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}
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public Stream<U> stream() {
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