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Paper/Spigot-Server-Patches/0474-Optimise-ArraySetSorted-removeIf.patch
Aikar ce270e1412
Updated Upstream (Bukkit/CraftBukkit/Spigot)
Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
b2f1908c SPIGOT-5783: Add helpful info to UnknownDependencyException
e4f46260 SPIGOT-2623: Add EntityEquipment methods to get/set ItemStacks by slot.
529a9a69 SPIGOT-5751: Clarify behaviour of block drop-related API methods

CraftBukkit Changes:
8ea9b138 Remove outdated build delay.
ffc2b251 Revert "#675: Fix redirected CommandNodes sometimes not being properly redirected"
cb701f6b #675: Fix redirected CommandNodes sometimes not being properly redirected
c9d7c16b SPIGOT-2623: Add EntityEquipment methods to get/set ItemStacks by slot.
fad2494a #673: Fix Craftworld#isChunkLoaded
8637ec00 SPIGOT-5751: Made breakNaturally and getDrops returns the correct item if no argument is given

Spigot Changes:
a99063f7 Rebuild patches

Fixes #3602
2020-06-23 04:40:03 -04:00

66 Zeilen
2.5 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Wed, 15 Apr 2020 18:23:28 -0700
Subject: [PATCH] Optimise ArraySetSorted#removeIf
Remove iterator allocation and ensure the call is always O(n)
diff --git a/src/main/java/net/minecraft/server/ArraySetSorted.java b/src/main/java/net/minecraft/server/ArraySetSorted.java
index 85f799a713db0c822d46b689010f9f6bd43f5280..7db6b5850b91588eb4d91f0d7e8b5dbbcb95b7cb 100644
--- a/src/main/java/net/minecraft/server/ArraySetSorted.java
+++ b/src/main/java/net/minecraft/server/ArraySetSorted.java
@@ -10,8 +10,8 @@ import java.util.NoSuchElementException;
public class ArraySetSorted<T> extends AbstractSet<T> {
private final Comparator<T> a;
- private T[] b;
- private int c;
+ private T[] b; private final T[] getBackingArray() { return this.b; } // Paper - OBFHELPER
+ private int c; private final int getSize() { return this.c; } private final void setSize(int value) { this.c = value; } // Paper - OBFHELPER
private ArraySetSorted(int i, Comparator<T> comparator) {
this.a = comparator;
@@ -22,6 +22,42 @@ public class ArraySetSorted<T> extends AbstractSet<T> {
}
}
+ // Paper start - optimise removeIf
+ @Override
+ public boolean removeIf(java.util.function.Predicate<? super T> filter) {
+ // prev. impl used an iterator, which could be n^2 and creates garbage
+ int i = 0, len = this.getSize();
+ T[] backingArray = this.getBackingArray();
+
+ for (;;) {
+ if (i >= len) {
+ return false;
+ }
+ if (!filter.test(backingArray[i])) {
+ ++i;
+ continue;
+ }
+ break;
+ }
+
+ // we only want to write back to backingArray if we really need to
+
+ int lastIndex = i; // this is where new elements are shifted to
+
+ for (; i < len; ++i) {
+ T curr = backingArray[i];
+ if (!filter.test(curr)) { // if test throws we're screwed
+ backingArray[lastIndex++] = curr;
+ }
+ }
+
+ // cleanup end
+ Arrays.fill(backingArray, lastIndex, len, null);
+ this.setSize(lastIndex);
+ return true;
+ }
+ // Paper end - optimise removeIf
+
public static <T extends Comparable<T>> ArraySetSorted<T> a(int i) {
return new ArraySetSorted<>(i, (Comparator)Comparator.naturalOrder()); // Paper - decompile fix
}