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Code Issues Releases Activity

back optimize varints

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NONPLAYT
2023-05-16 18:50:28 +03:00
parent 6c61f08588
commit 17224f6e45
1 changed files with 83 additions and 0 deletions
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83
patches/server/0033-Optimize-Varints.patch Normal file
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@@ -0,0 +1,83 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: NONPLAYT <76615486+NONPLAYT@users.noreply.github.com>
Date: Tue, 16 May 2023 18:45:29 +0300
Subject: [PATCH] Optimize Varints
Original license: GPLv3
Original project: https://github.com/PaperMC/Velocity
Paper pull request: https://github.com/PaperMC/Paper/pull/8418
diff --git a/src/main/java/gq/bxteam/divinemc/configuration/DivineConfig.java b/src/main/java/gq/bxteam/divinemc/configuration/DivineConfig.java
index 2744315c62f99b48cb689dd90fdfffac405b1bcc..cc0b3089ecc246abf7a4465055a63152ad0db0c3 100644
--- a/src/main/java/gq/bxteam/divinemc/configuration/DivineConfig.java
+++ b/src/main/java/gq/bxteam/divinemc/configuration/DivineConfig.java
@@ -162,4 +162,9 @@ public class DivineConfig {
private static void allowAnyUsername() {
allowAnyUsername = getBoolean("settings.player.allow-any-username", allowAnyUsername);
}
+
+ public static boolean doOptimizeVarints = true;
+ private static void doOptimizeVarints() {
+ doOptimizeVarints = getBoolean("settings.optimization.optimize-varints", doOptimizeVarints);
+ }
}
\ No newline at end of file
diff --git a/src/main/java/net/minecraft/network/FriendlyByteBuf.java b/src/main/java/net/minecraft/network/FriendlyByteBuf.java
index 1f4b64a5f812376c499c98cb4be62469bd0b7dbe..413a35e84c8006b5ef2919e769a5a28bbd794758 100644
--- a/src/main/java/net/minecraft/network/FriendlyByteBuf.java
+++ b/src/main/java/net/minecraft/network/FriendlyByteBuf.java
@@ -13,6 +13,7 @@ import com.mojang.serialization.Codec;
import com.mojang.serialization.DataResult;
import com.mojang.serialization.DynamicOps;
import com.mojang.serialization.JsonOps;
+import gq.bxteam.divinemc.configuration.DivineConfig;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufAllocator;
import io.netty.buffer.ByteBufInputStream;
@@ -104,7 +105,22 @@ public class FriendlyByteBuf extends ByteBuf {
this.source = parent;
}
+ // DivineMC start - Optimize varints
+ private static final int[] VARINT_EXACT_BYTE_LENGTHS = new int[33];
+ static {
+ for (int i = 0; i <= 32; ++i) {
+ VARINT_EXACT_BYTE_LENGTHS[i] = (int) Math.ceil((31d - (i - 1)) / 7d);
+ }
+ VARINT_EXACT_BYTE_LENGTHS[32] = 1; // Special case for the number 0.
+ }
+ // DivineMC end
+
public static int getVarIntSize(int value) {
+ // DivineMC start - Optimize varints
+ if (DivineConfig.doOptimizeVarints) {
+ return VARINT_EXACT_BYTE_LENGTHS[Integer.numberOfLeadingZeros(value)];
+ }
+ // DivineMC end
for (int j = 1; j < 5; ++j) {
if ((value & -1 << j * 7) == 0) {
return j;
@@ -615,6 +631,23 @@ public class FriendlyByteBuf extends ByteBuf {
}
public FriendlyByteBuf writeVarInt(int value) {
+ // DivineMC start - Optimize varints
+ if (DivineConfig.doOptimizeVarints) {
+ if ((value & (0xFFFFFFFF << 7)) == 0) {
+ writeByte(value);
+ } else if ((value & (0xFFFFFFFF << 14)) == 0) {
+ int w = (value & 0x7F | 0x80) << 8 | (value >>> 7);
+ writeShort(w);
+ } else {
+ while ((value & -128) != 0) {
+ this.writeByte(value & 127 | 128);
+ value >>>= 7;
+ }
+ this.writeByte(value);
+ }
+ return this;
+ }
+ // DivineMC end
while ((value & -128) != 0) {
this.writeByte(value & 127 | 128);
value >>>= 7;