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Fix patch "Faster redstone torch rapid clock removal" (#2014)

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Tux pointed out the patch still has O(n^2) time complexity since
the sublist class in arraylist does not override clear() from
AbstractList, which uses a forward moving iterator to clear
the list.

Resolved by using a peek and poll from ArrayDeque.

This patch also removes the useless WeakHashMap which holds
the list (it mapped world->list) and replaces it with a
field on World.
This commit is contained in:
Spottedleaf
2019-05-10 08:48:58 -07:00
parent 69ca68db14
commit 396186a950
13 changed files with 84 additions and 34 deletions
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2
Spigot-Server-Patches/Optimize-World.isLoaded-BlockPosition-Z.patch
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@@ -6,7 +6,7 @@ Subject: [PATCH] Optimize World.isLoaded(BlockPosition)Z
Reduce method invocations for World.isLoaded(BlockPosition)Z
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 5637c3872..1286703bf 100644
index 3305e110c..8ac081bef 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -0,0 +0,0 @@ public abstract class World implements IIBlockAccess, GeneratorAccess, AutoClose