Paper/Spigot-Server-Patches/0255-Optimize-RegistryID.c.patch

69 lines
2.1 KiB
Diff

From 0efdc2836b86d07a56a883c0f1885be68d730630 Mon Sep 17 00:00:00 2001
From: Andrew Steinborn <git@steinborn.me>
Date: Mon, 23 Jul 2018 13:08:19 -0400
Subject: [PATCH] Optimize RegistryID.c()
This is a frequent hotspot for world loading/saving.
diff --git a/src/main/java/net/minecraft/server/RegistryID.java b/src/main/java/net/minecraft/server/RegistryID.java
index e15d286710..e8a48b9a4c 100644
--- a/src/main/java/net/minecraft/server/RegistryID.java
+++ b/src/main/java/net/minecraft/server/RegistryID.java
@@ -14,12 +14,14 @@ public class RegistryID<K> implements Registry<K> {
private K[] d;
private int e;
private int f;
+ private java.util.BitSet usedIds; // Paper
public RegistryID(int i) {
i = (int) ((float) i / 0.8F);
this.b = (K[]) (new Object[i]); // Paper - decompile fix
this.c = new int[i];
this.d = (K[]) (new Object[i]); // Paper - decompile fix
+ this.usedIds = new java.util.BitSet(); // Paper
}
public int getId(@Nullable K k0) {
@@ -44,9 +46,14 @@ public class RegistryID<K> implements Registry<K> {
}
private int c() {
+ // Paper start
+ /*
while (this.e < this.d.length && this.d[this.e] != null) {
++this.e;
}
+ */
+ this.e = this.usedIds.nextClearBit(0);
+ // Paper end
return this.e;
}
@@ -60,6 +67,7 @@ public class RegistryID<K> implements Registry<K> {
this.d = (K[]) (new Object[i]); // Paper - decompile fix
this.e = 0;
this.f = 0;
+ this.usedIds.clear(); // Paper
for (int j = 0; j < ak.length; ++j) {
if (ak[j] != null) {
@@ -85,6 +93,7 @@ public class RegistryID<K> implements Registry<K> {
this.b[k] = k0;
this.c[k] = i;
this.d[i] = k0;
+ this.usedIds.set(i); // Paper
++this.f;
if (i == this.e) {
++this.e;
@@ -149,6 +158,7 @@ public class RegistryID<K> implements Registry<K> {
Arrays.fill(this.d, (Object) null);
this.e = 0;
this.f = 0;
+ this.usedIds.clear(); // Paper
}
public int b() {
--
2.24.1