53 lines
2.6 KiB
Diff
53 lines
2.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: ishland <ishlandmc@yeah.net>
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Date: Mon, 24 Jan 2022 10:56:10 -0500
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Subject: [PATCH] c2me: reduce_allocs
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Copyright (c) 2021-2022 ishland
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Original code by RelativityMC, licensed under MIT
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You can find the original code on https://github.com/RelativityMC/C2ME-fabric (Yarn mappings)
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diff --git a/src/main/java/com/ishland/c2me/common/optimization/reduce_allocs/ObjectCachingUtils.java b/src/main/java/com/ishland/c2me/common/optimization/reduce_allocs/ObjectCachingUtils.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..9b9c3ed63421a48aa4ba341aef7042fc953147bb
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--- /dev/null
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+++ b/src/main/java/com/ishland/c2me/common/optimization/reduce_allocs/ObjectCachingUtils.java
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@@ -0,0 +1,23 @@
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+package com.ishland.c2me.common.optimization.reduce_allocs;
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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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+
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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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+
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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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+}
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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 4f3bfac8b387297df25d56ef957d10f30a257872..5a96e7215912b17dc780bb68eee1acd63a86381b 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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@@ -54,7 +54,7 @@ public class OreFeature extends Feature<OreConfiguration> {
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protected boolean doPlace(WorldGenLevel world, Random random, OreConfiguration config, double startX, double endX, double startZ, double endZ, double startY, double endY, int x, int y, int z, int horizontalSize, int verticalSize) {
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int i = 0;
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- BitSet bitSet = new BitSet(horizontalSize * verticalSize * horizontalSize);
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+ BitSet bitSet = com.ishland.c2me.common.optimization.reduce_allocs.ObjectCachingUtils.getCachedOrNewBitSet(horizontalSize * verticalSize * horizontalSize); // JettPack - 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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