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net/minecraft/network/

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This commit is contained in:
Owen1212055
2024-12-14 15:47:45 -05:00
parent b0f627d7bb
commit 93c74cf2f4
6 changed files with 149 additions and 237 deletions
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43
paper-server/patches/sources/net/minecraft/network/VarInt.java.patch Normal file
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@@ -0,0 +1,43 @@
--- a/net/minecraft/network/VarInt.java
+++ b/net/minecraft/network/VarInt.java
@@ -9,6 +_,18 @@
private static final int DATA_BITS_PER_BYTE = 7;
public static int getByteSize(int data) {
+ // Paper start - Optimize VarInts
+ return VARINT_EXACT_BYTE_LENGTHS[Integer.numberOfLeadingZeros(data)];
+ }
+ 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.
+ }
+ public static int getByteSizeOld(int data) {
+ // Paper end - Optimize VarInts
for (int i = 1; i < 5; i++) {
if ((data & -1 << i * 7) == 0) {
return i;
@@ -39,6 +_,21 @@
}
public static ByteBuf write(ByteBuf buffer, int value) {
+ // Paper start - Optimize VarInts
+ // Peel the one and two byte count cases explicitly as they are the most common VarInt sizes
+ // that the proxy will write, to improve inlining.
+ if ((value & (0xFFFFFFFF << 7)) == 0) {
+ buffer.writeByte(value);
+ } else if ((value & (0xFFFFFFFF << 14)) == 0) {
+ int w = (value & 0x7F | 0x80) << 8 | (value >>> 7);
+ buffer.writeShort(w);
+ } else {
+ writeOld(buffer, value);
+ }
+ return buffer;
+ }
+ public static ByteBuf writeOld(ByteBuf buffer, int value) {
+ // Paper end - Optimize VarInts
while ((value & -128) != 0) {
buffer.writeByte(value & 127 | 128);
value >>>= 7;