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bc127ea819
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: eec4aab0 SPIGOT-6657: Add getPlayer to SheepDyeWoolEvent 205213c6 SPIGOT-6656: CauldronLevelChangeEvent is not fired correctly when dripstone fills the cauldron CraftBukkit Changes: b8c522d5 SPIGOT-6657: Add getPlayer to SheepDyeWoolEvent f04a77dc SPIGOT-6656: CauldronLevelChangeEvent is not fired correctly when dripstone fills the cauldron d1dbcebc SPIGOT-6653: Canceling snow bucket placement removes snow from bucket 4f34a67b #891: Fix scheduler task ID overflow and duplication issues Spigot Changes: d03d7f12 BUILDTOOLS-604: Rebuild patches
100 lines
4.8 KiB
Diff
100 lines
4.8 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: Sat, 23 May 2020 01:31:06 -0400
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Subject: [PATCH] Fix Non Full Status Chunk NBT Memory Leak
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Any full status chunk that was requested for any status less than full
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would hold onto their entire nbt tree and every variable in that function.
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This was due to use of a lambda that persists on the Chunk object
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until that chunk reaches FULL status.
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With introduction of no tick, we greatly increased the number of non
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full chunks so this was really starting to hurt.
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We further improve it by making a copy of the nbt tag with only the memory
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it needs, so that we dont have to hold a copy to the entire compound.
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diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java
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index afbb42595afeb151208880dcf48b94d7c00a8733..e850b8db05f4d66aec8eb74a5a48357b90ca77a5 100644
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--- a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java
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+++ b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java
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@@ -27,6 +27,7 @@ import net.minecraft.nbt.CompoundTag;
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import net.minecraft.nbt.ListTag;
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import net.minecraft.nbt.LongArrayTag;
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import net.minecraft.nbt.ShortTag;
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+import net.minecraft.nbt.Tag;
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import net.minecraft.server.level.ServerChunkCache;
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import net.minecraft.server.level.ServerLevel;
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import net.minecraft.server.level.ThreadedLevelLightEngine;
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@@ -207,15 +208,9 @@ public class ChunkSerializer {
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object2 = protochunkticklist1;
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}
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- object = new LevelChunk(world.getLevel(), pos, biomestorage, chunkconverter, (TickList) object1, (TickList) object2, k, achunksection, (chunk) -> {
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- ChunkSerializer.postLoadChunk(world, nbttagcompound1, chunk);
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- // CraftBukkit start - load chunk persistent data from nbt
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- net.minecraft.nbt.Tag persistentBase = nbttagcompound1.get("ChunkBukkitValues");
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- if (persistentBase instanceof CompoundTag) {
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- chunk.persistentDataContainer.putAll((CompoundTag) persistentBase);
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- }
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- // CraftBukkit end
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- });
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+ object = new LevelChunk(world.getLevel(), pos, biomestorage, chunkconverter, (TickList) object1, (TickList) object2, k, achunksection, // Paper start - fix massive nbt memory leak due to lambda. move lambda into a container method to not leak scope. Only clone needed NBT keys.
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+ createLoadEntitiesConsumer(new SafeNBTCopy(nbttagcompound1, "TileEntities", "Entities", "ChunkBukkitValues")) // Paper - move CB Chunk PDC into here
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+ );// Paper end
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} else {
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ProtoChunk protochunk = new ProtoChunk(pos, chunkconverter, achunksection, protochunkticklist, protochunkticklist1, world, world); // Paper - add level
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@@ -321,6 +316,50 @@ public class ChunkSerializer {
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return new InProgressChunkHolder(protochunk1, tasksToExecuteOnMain); // Paper - Async chunk loading
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}
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}
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+ // Paper start
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+
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+ /**
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+ * This wrapper will error out if any key is accessed that wasn't copied so we can catch it easy on an update
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+ */
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+ private static class SafeNBTCopy extends CompoundTag {
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+ private final java.util.Set<String> keys = new java.util.HashSet<String>();
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+ public SafeNBTCopy(CompoundTag base, String... keys) {
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+ for (String key : keys) {
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+ this.keys.add(key);
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+ final Tag nbtBase = base.get(key);
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+ if (nbtBase != null) {
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+ this.put(key, nbtBase);
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+ }
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+ }
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+ }
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+
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+ @Override
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+ public boolean contains(String key) {
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+ if (super.contains(key)) {
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+ return true;
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+ } else if (keys.contains(key)) {
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+ return false;
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+ }
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+ throw new IllegalStateException("Missing Key " + key + " in SafeNBTCopy");
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+ }
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+
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+ @Override
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+ public boolean contains(String key, int type) {
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+ return contains(key) && super.contains(key, type);
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+ }
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+ }
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+ private static java.util.function.Consumer<LevelChunk> createLoadEntitiesConsumer(CompoundTag nbt) {
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+ return (chunk) -> {
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+ postLoadChunk(chunk.level, nbt, chunk);
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+ // CraftBukkit start - load chunk persistent data from nbt
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+ Tag persistentBase = nbt.get("ChunkBukkitValues");
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+ if (persistentBase instanceof CompoundTag) {
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+ chunk.persistentDataContainer.putAll((CompoundTag) persistentBase);
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+ }
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+ // CraftBukkit end
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+ };
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+ }
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+ // Paper end
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// Paper start - async chunk save for unload
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public static final class AsyncSaveData {
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