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c97ce029e9
PaperMC believes that 1.16.2 is now ready for general release as we fixed the main issue plagueing the 1.16.x release, the MapLike data conversion issues. Until now, it was not safe for a server to convert a world to 1.16.2 without data conversion issues around villages and potentially other things. If you did, those MapLike errors meant something went wrong. This is now resolved. Big thanks to all those that helped, notably @BillyGalbreath and @Proximyst who did large parts of the update process with me. Please as always, backup your worlds and test before updating to 1.16.2! If you update to 1.16.2, there is no going back to an older build than this. --------------------------------- Co-authored-by: William Blake Galbreath <Blake.Galbreath@GMail.com> Co-authored-by: Mariell Hoversholm <proximyst@proximyst.com> Co-authored-by: krolik-exe <69214078+krolik-exe@users.noreply.github.com> Co-authored-by: BillyGalbreath <BillyGalbreath@users.noreply.github.com> Co-authored-by: stonar96 <minecraft.stonar96@gmail.com> Co-authored-by: Shane Freeder <theboyetronic@gmail.com> Co-authored-by: Jason <jasonpenilla2@me.com> Co-authored-by: kashike <kashike@vq.lc> Co-authored-by: Aurora <21148213+aurorasmiles@users.noreply.github.com> Co-authored-by: KennyTV <kennytv@t-online.de> Co-authored-by: commandblockguy <commandblockguy1@gmail.com> Co-authored-by: DigitalRegent <misterwener@gmail.com> Co-authored-by: ishland <ishlandmc@yeah.net>
55 lines
2.3 KiB
Diff
55 lines
2.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Wyatt Childers <wchilders@nearce.com>
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Date: Sat, 4 Jul 2020 23:07:43 -0400
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Subject: [PATCH] Optimize the advancement data player iteration to be O(N)
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rather than O(N^2)
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diff --git a/src/main/java/net/minecraft/server/AdvancementDataPlayer.java b/src/main/java/net/minecraft/server/AdvancementDataPlayer.java
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index 57b9d13447a4f7804827c1bd41121c3069c696bd..d3387a4e16f81b820d40502d2c46ebb3db88f824 100644
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--- a/src/main/java/net/minecraft/server/AdvancementDataPlayer.java
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+++ b/src/main/java/net/minecraft/server/AdvancementDataPlayer.java
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@@ -439,6 +439,16 @@ public class AdvancementDataPlayer {
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}
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private void e(Advancement advancement) {
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+ // Paper start
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+ e(advancement, IterationEntryPoint.ROOT);
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+ }
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+ private enum IterationEntryPoint {
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+ ROOT,
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+ ITERATOR,
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+ PARENT_OF_ITERATOR
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+ }
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+ private void e(Advancement advancement, IterationEntryPoint entryPoint) {
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+ // Paper end
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boolean flag = this.f(advancement);
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boolean flag1 = this.h.contains(advancement);
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@@ -454,15 +464,23 @@ public class AdvancementDataPlayer {
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}
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if (flag != flag1 && advancement.b() != null) {
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- this.e(advancement.b());
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+ // Paper start - If we're not coming from an iterator consider this to be a root entry, otherwise
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+ // market that we're entering from the parent of an iterator.
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+ this.e(advancement.b(), entryPoint == IterationEntryPoint.ITERATOR ? IterationEntryPoint.PARENT_OF_ITERATOR : IterationEntryPoint.ROOT);
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}
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+ // If this is true, we've went through a child iteration, entered the parent, processed the parent
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+ // and are about to reprocess the children. Stop processing here to prevent O(N^2) processing.
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+ if (entryPoint == IterationEntryPoint.PARENT_OF_ITERATOR) {
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+ return;
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+ } // Paper end
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+
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Iterator iterator = advancement.e().iterator();
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while (iterator.hasNext()) {
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Advancement advancement1 = (Advancement) iterator.next();
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- this.e(advancement1);
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+ this.e(advancement1, IterationEntryPoint.ITERATOR); // Paper - Mark this call as being from iteration
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}
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}
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