mirror of
https://github.com/BX-Team/DivineMC.git
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46 lines
2.2 KiB
Diff
46 lines
2.2 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: NONPLAYT <76615486+NONPLAYT@users.noreply.github.com>
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Date: Mon, 13 May 2024 17:40:02 +0300
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Subject: [PATCH] C2ME: reduce_allocs
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diff --git a/src/main/java/net/minecraft/world/level/levelgen/feature/OreFeature.java b/src/main/java/net/minecraft/world/level/levelgen/feature/OreFeature.java
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index 506b2afd099c9b7e9ac3f6f2fcea8e523fae396b..2394f6f2c031b25a6cbeb79918a04b5710548d98 100644
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--- a/src/main/java/net/minecraft/world/level/levelgen/feature/OreFeature.java
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+++ b/src/main/java/net/minecraft/world/level/levelgen/feature/OreFeature.java
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@@ -69,7 +69,7 @@ public class OreFeature extends Feature<OreConfiguration> {
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int verticalSize
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) {
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int i = 0;
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- BitSet bitSet = new BitSet(horizontalSize * verticalSize * horizontalSize);
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+ BitSet bitSet = space.bxteam.divinemc.util.c2me.ObjectCachingUtils.getCachedOrNewBitSet(horizontalSize * verticalSize * horizontalSize); // DivineMC - C2ME: reduce_allocs
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BlockPos.MutableBlockPos mutableBlockPos = new BlockPos.MutableBlockPos();
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int j = config.size;
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double[] ds = new double[j * 4];
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diff --git a/src/main/java/space/bxteam/divinemc/util/c2me/ObjectCachingUtils.java b/src/main/java/space/bxteam/divinemc/util/c2me/ObjectCachingUtils.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..828b9cb2f6506b9775dfccc934e9a64d5ddfaeff
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--- /dev/null
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+++ b/src/main/java/space/bxteam/divinemc/util/c2me/ObjectCachingUtils.java
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@@ -0,0 +1,20 @@
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+package space.bxteam.divinemc.util.c2me;
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+
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+import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
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+
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+import java.util.BitSet;
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+import java.util.function.IntFunction;
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+
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+public class ObjectCachingUtils {
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+ private static final IntFunction<BitSet> bitSetConstructor = BitSet::new;
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+
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+ public static ThreadLocal<Int2ObjectOpenHashMap<BitSet>> BITSETS = ThreadLocal.withInitial(Int2ObjectOpenHashMap::new);
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+
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+ private ObjectCachingUtils() {}
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+
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+ public static BitSet getCachedOrNewBitSet(int bits) {
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+ final BitSet bitSet = BITSETS.get().computeIfAbsent(bits, bitSetConstructor);
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+ bitSet.clear();
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+ return bitSet;
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+ }
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+}
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