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https://github.com/PaperMC/Paper.git
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82 lines
4.1 KiB
Diff
82 lines
4.1 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: Tue, 5 Apr 2016 21:38:58 -0400
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Subject: [PATCH] Optimize DataBits
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Remove Debug checks as these are super hot and causing noticeable hits
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Before: http://i.imgur.com/nQsMzAE.png
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After: http://i.imgur.com/nJ46crB.png
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Optimize redundant converting of static fields into an unsigned long each call by precomputing it in ctor
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diff --git a/src/main/java/net/minecraft/util/BitStorage.java b/src/main/java/net/minecraft/util/BitStorage.java
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index 65bd706ca96f5c0ec4573da9fb144fb51d2de919..07e1374ac3430662edd9f585e59b785e329f0820 100644
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--- a/src/main/java/net/minecraft/util/BitStorage.java
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+++ b/src/main/java/net/minecraft/util/BitStorage.java
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@@ -12,8 +12,8 @@ public class BitStorage {
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private final long mask;
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private final int size;
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private final int valuesPerLong;
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- private final int divideMul;
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- private final int divideAdd;
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+ private final int divideMul; private final long divideMulUnsigned; // Paper - referenced in b(int) with 2 Integer.toUnsignedLong calls
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+ private final int divideAdd; private final long divideAddUnsigned; // Paper
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private final int divideShift;
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public BitStorage(int elementBits, int size) {
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@@ -27,8 +27,8 @@ public class BitStorage {
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this.mask = (1L << elementBits) - 1L;
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this.valuesPerLong = (char)(64 / elementBits);
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int i = 3 * (this.valuesPerLong - 1);
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- this.divideMul = MAGIC[i + 0];
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- this.divideAdd = MAGIC[i + 1];
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+ this.divideMul = BitStorage.MAGIC[i + 0]; this.divideMulUnsigned = Integer.toUnsignedLong(this.divideMul); // Paper
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+ this.divideAdd = BitStorage.MAGIC[i + 1]; this.divideAddUnsigned = Integer.toUnsignedLong(this.divideAdd); // Paper
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this.divideShift = MAGIC[i + 2];
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int j = (size + this.valuesPerLong - 1) / this.valuesPerLong;
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if (storage != null) {
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@@ -44,14 +44,14 @@ public class BitStorage {
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}
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private int cellIndex(int index) {
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- long l = Integer.toUnsignedLong(this.divideMul);
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- long m = Integer.toUnsignedLong(this.divideAdd);
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- return (int)((long)index * l + m >> 32 >> this.divideShift);
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+ //long l = Integer.toUnsignedLong(this.divideMul); // Paper
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+ //long m = Integer.toUnsignedLong(this.divideAdd); // Paper
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+ return (int) ((long) index * this.divideMulUnsigned + this.divideAddUnsigned >> 32 >> this.divideShift); // Paper
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}
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- public int getAndSet(int index, int value) {
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- Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
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- Validate.inclusiveBetween(0L, this.mask, (long)value);
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+ public final int getAndSet(int index, int value) { // Paper - make final for inline
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+ //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper
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+ //Validate.inclusiveBetween(0L, this.mask, (long)value); // Paper
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int i = this.cellIndex(index);
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long l = this.data[i];
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int j = (index - i * this.valuesPerLong) * this.bits;
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@@ -60,17 +60,17 @@ public class BitStorage {
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return k;
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}
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- public void set(int index, int value) {
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- Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
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- Validate.inclusiveBetween(0L, this.mask, (long)value);
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+ public final void set(int index, int value) { // Paper - make final for inline
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+ //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper
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+ //Validate.inclusiveBetween(0L, this.mask, (long)value); // Paper
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int i = this.cellIndex(index);
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long l = this.data[i];
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int j = (index - i * this.valuesPerLong) * this.bits;
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this.data[i] = l & ~(this.mask << j) | ((long)value & this.mask) << j;
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}
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- public int get(int index) {
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- Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
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+ public final int get(int index) { // Paper - make final for inline
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+ //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
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int i = this.cellIndex(index);
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long l = this.data[i];
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int j = (index - i * this.valuesPerLong) * this.bits;
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