geforkt von Mirrors/Paper
c97ce029e9
PaperMC believes that 1.16.2 is now ready for general release as we fixed the main issue plagueing the 1.16.x release, the MapLike data conversion issues. Until now, it was not safe for a server to convert a world to 1.16.2 without data conversion issues around villages and potentially other things. If you did, those MapLike errors meant something went wrong. This is now resolved. Big thanks to all those that helped, notably @BillyGalbreath and @Proximyst who did large parts of the update process with me. Please as always, backup your worlds and test before updating to 1.16.2! If you update to 1.16.2, there is no going back to an older build than this. --------------------------------- Co-authored-by: William Blake Galbreath <Blake.Galbreath@GMail.com> Co-authored-by: Mariell Hoversholm <proximyst@proximyst.com> Co-authored-by: krolik-exe <69214078+krolik-exe@users.noreply.github.com> Co-authored-by: BillyGalbreath <BillyGalbreath@users.noreply.github.com> Co-authored-by: stonar96 <minecraft.stonar96@gmail.com> Co-authored-by: Shane Freeder <theboyetronic@gmail.com> Co-authored-by: Jason <jasonpenilla2@me.com> Co-authored-by: kashike <kashike@vq.lc> Co-authored-by: Aurora <21148213+aurorasmiles@users.noreply.github.com> Co-authored-by: KennyTV <kennytv@t-online.de> Co-authored-by: commandblockguy <commandblockguy1@gmail.com> Co-authored-by: DigitalRegent <misterwener@gmail.com> Co-authored-by: ishland <ishlandmc@yeah.net>
73 Zeilen
3.4 KiB
Diff
73 Zeilen
3.4 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/server/ChunkRegionLoader.java b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
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index 3d06c87b64c209526bee2ea11b58d30fe9b1d062..335bb1dcb7285edabb6c5e7ec6ba4d6d40c60dcb 100644
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--- a/src/main/java/net/minecraft/server/ChunkRegionLoader.java
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+++ b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
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@@ -156,9 +156,9 @@ public class ChunkRegionLoader {
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object2 = protochunkticklist1;
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}
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- object = new Chunk(worldserver.getMinecraftWorld(), chunkcoordintpair, biomestorage, chunkconverter, (TickList) object1, (TickList) object2, j, achunksection, (chunk) -> {
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- loadEntities(nbttagcompound1, chunk);
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- });
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+ object = new Chunk(worldserver.getMinecraftWorld(), chunkcoordintpair, biomestorage, chunkconverter, (TickList) object1, (TickList) object2, j, 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"))
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+ );// Paper end
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} else {
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ProtoChunk protochunk = new ProtoChunk(chunkcoordintpair, chunkconverter, achunksection, protochunkticklist, protochunkticklist1, worldserver); // Paper - Anti-Xray - Add parameter
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@@ -264,6 +264,37 @@ public class ChunkRegionLoader {
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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 NBTTagCompound {
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+ private final java.util.Set<String> keys = new java.util.HashSet<String>();
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+ public SafeNBTCopy(NBTTagCompound base, String... keys) {
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+ for (String key : keys) {
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+ this.keys.add(key);
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+ this.set(key, base.get(key));
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+ }
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+ }
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+
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+ @Override
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+ public boolean hasKey(String s) {
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+ if (this.keys.contains(s)) {
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+ return true;
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+ }
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+ throw new IllegalStateException("Missing Key " + s + " in SafeNBTCopy");
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+ }
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+
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+ @Override
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+ public boolean hasKeyOfType(String s, int i) {
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+ return hasKey(s) && super.hasKeyOfType(s, i);
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+ }
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+ }
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+ private static java.util.function.Consumer<Chunk> createLoadEntitiesConsumer(NBTTagCompound nbt) {
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+ return (chunk) -> loadEntities(nbt, chunk);
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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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