mirror of https://github.com/PaperMC/Paper.git
119 lines
6.5 KiB
Diff
119 lines
6.5 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/SimpleBitStorage.java b/src/main/java/net/minecraft/util/SimpleBitStorage.java
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index dea4f322f750a0a09407fdb48d5d6e809dfe8ed4..9f438d9c6eb05e43d24e4af68188a3d4c46a938c 100644
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--- a/src/main/java/net/minecraft/util/SimpleBitStorage.java
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+++ b/src/main/java/net/minecraft/util/SimpleBitStorage.java
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@@ -204,8 +204,8 @@ public class SimpleBitStorage implements 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 - Perf: Optimize SimpleBitStorage; referenced in b(int) with 2 Integer.toUnsignedLong calls
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+ private final int divideAdd; private final long divideAddUnsigned; // Paper - Perf: Optimize SimpleBitStorage
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private final int divideShift;
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public SimpleBitStorage(int elementBits, int size, int[] data) {
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@@ -248,8 +248,8 @@ public class SimpleBitStorage implements 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 = MAGIC[i + 0]; this.divideMulUnsigned = Integer.toUnsignedLong(this.divideMul); // Paper - Perf: Optimize SimpleBitStorage
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+ this.divideAdd = MAGIC[i + 1]; this.divideAddUnsigned = Integer.toUnsignedLong(this.divideAdd); // Paper - Perf: Optimize SimpleBitStorage
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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 (data != null) {
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@@ -264,15 +264,15 @@ public class SimpleBitStorage implements 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 - Perf: Optimize SimpleBitStorage
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+ //long m = Integer.toUnsignedLong(this.divideAdd); // Paper - Perf: Optimize SimpleBitStorage
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+ return (int) (index * this.divideMulUnsigned + this.divideAddUnsigned >> 32 >> this.divideShift); // Paper - Perf: Optimize SimpleBitStorage
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}
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@Override
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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 - Perf: Optimize SimpleBitStorage
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+ //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper - Perf: Optimize SimpleBitStorage
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+ //Validate.inclusiveBetween(0L, this.mask, (long)value); // Paper - Perf: Optimize SimpleBitStorage
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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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@@ -282,9 +282,9 @@ public class SimpleBitStorage implements BitStorage {
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}
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@Override
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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 - Perf: Optimize SimpleBitStorage
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+ //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper - Perf: Optimize SimpleBitStorage
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+ //Validate.inclusiveBetween(0L, this.mask, (long)value); // Paper - Perf: Optimize SimpleBitStorage
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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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@@ -292,8 +292,8 @@ public class SimpleBitStorage implements BitStorage {
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}
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@Override
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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 - Perf: Optimize SimpleBitStorage
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+ //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper - Perf: Optimize SimpleBitStorage
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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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diff --git a/src/main/java/net/minecraft/util/ZeroBitStorage.java b/src/main/java/net/minecraft/util/ZeroBitStorage.java
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index 8dd5a5899e9b5d8b3f1a6064dd7c1580313da69e..50040c497a819cd1229042ab3cb057d34a32cacc 100644
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--- a/src/main/java/net/minecraft/util/ZeroBitStorage.java
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+++ b/src/main/java/net/minecraft/util/ZeroBitStorage.java
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@@ -13,21 +13,21 @@ public class ZeroBitStorage implements BitStorage {
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}
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@Override
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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, 0L, (long)value);
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+ public final int getAndSet(int index, int value) { // Paper - Perf: Optimize SimpleBitStorage
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+ //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper - Perf: Optimize SimpleBitStorage
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+ //Validate.inclusiveBetween(0L, 0L, (long)value); // Paper - Perf: Optimize SimpleBitStorage
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return 0;
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}
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@Override
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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, 0L, (long)value);
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+ public final void set(int index, int value) { // Paper - Perf: Optimize SimpleBitStorage
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+ //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper - Perf: Optimize SimpleBitStorage
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+ //Validate.inclusiveBetween(0L, 0L, (long)value); // Paper - Perf: Optimize SimpleBitStorage
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}
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@Override
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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 - Perf: Optimize SimpleBitStorage
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+ //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper - Perf: Optimize SimpleBitStorage
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return 0;
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}
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