PaperMC/Spigot-Server-Patches/Optimize-RegistryID.c.patch
Zach Brown 7a5a4fd400 Move version command update checking to the implementation
This makes it easier for downstream projects (forks) to replace the
version fetching system with their own. It is as simple as implementing
an interface and overriding the default implementation of
org.bukkit.UnsafeValues#getVersionFetcher()

It also makes it easier for us to organize things like the version
history feature.

Lastly I have updated the paper implementation to check against the site
API rather than against jenkins.
2019-05-27 04:13:41 -05:00

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From 0000000000000000000000000000000000000000 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 e15d28671..e8a48b9a4 100644
--- a/src/main/java/net/minecraft/server/RegistryID.java
+++ b/src/main/java/net/minecraft/server/RegistryID.java
@@ -0,0 +0,0 @@ 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) {
@@ -0,0 +0,0 @@ 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;
}
@@ -0,0 +0,0 @@ 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) {
@@ -0,0 +0,0 @@ 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;
@@ -0,0 +0,0 @@ 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() {
--