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ec8d7387ad
This was using SIGNIFICANT amounts of memory allocating many long[]'s for BitSets for every ProtoChunk in the cache that had been unloaded and reloaded. This will result in a nice memory reduction.
43 lines
2.4 KiB
Diff
43 lines
2.4 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, 9 May 2020 12:11:47 -0400
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Subject: [PATCH] MC-183249: Don't generate Carving Masks BitSet unless needed
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This was using SIGNIFICANT amounts of memory allocating many
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long[]'s for BitSets for every ProtoChunk in the cache that had
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been unloaded and reloaded.
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This will result in a nice memory reduction.
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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 fa893b14bcef9bab6891dea2c4375b09d74ac038..e625842e524f18e469f7695b27d52d4d04892266 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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@@ -472,7 +472,12 @@ public class ChunkRegionLoader {
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for (int l = 0; l < k; ++l) {
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WorldGenStage.Features worldgenstage_features = aworldgenstage_features[l];
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- nbttagcompound3.setByteArray(worldgenstage_features.toString(), ichunkaccess.a(worldgenstage_features).toByteArray());
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+ // Paper start - don't create carving mask bitsets if not even at that chunk status yet
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+ BitSet mask = protochunk.getCarvingMaskIfSet(worldgenstage_features);
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+ if (mask != null) {
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+ nbttagcompound3.setByteArray(worldgenstage_features.toString(), mask.toByteArray());
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+ }
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+ // Paper end
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}
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nbttagcompound1.set("CarvingMasks", nbttagcompound3);
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diff --git a/src/main/java/net/minecraft/server/ProtoChunk.java b/src/main/java/net/minecraft/server/ProtoChunk.java
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index deb7fb090196c4a33c0bb224f1c4e899aa3cd8c3..9223ef9545be4a87b421e25ebe3f5b7ad72c4726 100644
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--- a/src/main/java/net/minecraft/server/ProtoChunk.java
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+++ b/src/main/java/net/minecraft/server/ProtoChunk.java
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@@ -43,7 +43,8 @@ public class ProtoChunk implements IChunkAccess {
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private final ProtoChunkTickList<Block> q;
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private final ProtoChunkTickList<FluidType> r;
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private long s;
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- private final Map<WorldGenStage.Features, BitSet> t;
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+ private final Map<WorldGenStage.Features, BitSet> t;public BitSet getCarvingMaskIfSet(WorldGenStage.Features worldgenstage_features) { return this.t.get(worldgenstage_features); } // Paper
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+ // Paper end
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private volatile boolean u;
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private final World world; // Paper - Anti-Xray - Add world
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