geforkt von Mirrors/Paper
55 Zeilen
2.4 KiB
Diff
55 Zeilen
2.4 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Wyatt Childers <wchilders@nearce.com>
|
|
Date: Sat, 4 Jul 2020 23:07:43 -0400
|
|
Subject: [PATCH] Optimize the advancement data player iteration to be O(N)
|
|
rather than O(N^2)
|
|
|
|
|
|
diff --git a/src/main/java/net/minecraft/server/PlayerAdvancements.java b/src/main/java/net/minecraft/server/PlayerAdvancements.java
|
|
index 3d82f984648605d58fae3c57f145d0da8a2ae225..bd858a9da2f2442be85f36bb2de0dac46d0c68d7 100644
|
|
--- a/src/main/java/net/minecraft/server/PlayerAdvancements.java
|
|
+++ b/src/main/java/net/minecraft/server/PlayerAdvancements.java
|
|
@@ -437,6 +437,16 @@ public class PlayerAdvancements {
|
|
}
|
|
|
|
private void ensureVisibility(Advancement advancement) {
|
|
+ // Paper start
|
|
+ ensureVisibility(advancement, IterationEntryPoint.ROOT);
|
|
+ }
|
|
+ private enum IterationEntryPoint {
|
|
+ ROOT,
|
|
+ ITERATOR,
|
|
+ PARENT_OF_ITERATOR
|
|
+ }
|
|
+ private void ensureVisibility(Advancement advancement, IterationEntryPoint entryPoint) {
|
|
+ // Paper end
|
|
boolean flag = this.shouldBeVisible(advancement);
|
|
boolean flag1 = this.visible.contains(advancement);
|
|
|
|
@@ -452,15 +462,23 @@ public class PlayerAdvancements {
|
|
}
|
|
|
|
if (flag != flag1 && advancement.getParent() != null) {
|
|
- this.ensureVisibility(advancement.getParent());
|
|
+ // Paper start - If we're not coming from an iterator consider this to be a root entry, otherwise
|
|
+ // market that we're entering from the parent of an iterator.
|
|
+ this.ensureVisibility(advancement.getParent(), entryPoint == IterationEntryPoint.ITERATOR ? IterationEntryPoint.PARENT_OF_ITERATOR : IterationEntryPoint.ROOT);
|
|
}
|
|
|
|
+ // If this is true, we've went through a child iteration, entered the parent, processed the parent
|
|
+ // and are about to reprocess the children. Stop processing here to prevent O(N^2) processing.
|
|
+ if (entryPoint == IterationEntryPoint.PARENT_OF_ITERATOR) {
|
|
+ return;
|
|
+ } // Paper end
|
|
+
|
|
Iterator iterator = advancement.getChildren().iterator();
|
|
|
|
while (iterator.hasNext()) {
|
|
Advancement advancement1 = (Advancement) iterator.next();
|
|
|
|
- this.ensureVisibility(advancement1);
|
|
+ this.ensureVisibility(advancement1, IterationEntryPoint.ITERATOR); // Paper - Mark this call as being from iteration
|
|
}
|
|
|
|
}
|