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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: 09f10fd9 SPIGOT-5950: Add PrepareSmithingEvent event CraftBukkit Changes:7c03d257SPIGOT-6011: End Gateways do not work on Non-Main End Worldsd492e363SPIGOT-6015: Small Armor Stand doesn't drop items5db13eeaSPIGOT-5950: Add PrepareSmithingEvent event
58 lines
2.4 KiB
Diff
58 lines
2.4 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Tue, 21 Apr 2020 03:51:53 -0400
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Subject: [PATCH] Allow multiple callbacks to schedule for Callback Executor
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ChunkMapDistance polls multiple entries for pendingChunkUpdates
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Each of these have the potential to move a chunk in and out of
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"Loaded" state, which will result in multiple callbacks being
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needed within a single tick of ChunkMapDistance
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Use an ArrayDeque to store this Queue
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We make sure to also implement a pattern that is recursion safe too.
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diff --git a/src/main/java/net/minecraft/server/PlayerChunkMap.java b/src/main/java/net/minecraft/server/PlayerChunkMap.java
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index 987d4129d7ec9c8be4f6a20376923702e895f231..f2bbb61c7f54fabd9ee087eb4f7ec56aa3df6e99 100644
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--- a/src/main/java/net/minecraft/server/PlayerChunkMap.java
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+++ b/src/main/java/net/minecraft/server/PlayerChunkMap.java
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@@ -112,24 +112,32 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
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public final CallbackExecutor callbackExecutor = new CallbackExecutor();
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public static final class CallbackExecutor implements java.util.concurrent.Executor, Runnable {
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- private Runnable queued;
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+ // Paper start - replace impl with recursive safe multi entry queue
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+ // it's possible to schedule multiple tasks currently, so it's vital we change this impl
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+ // If we recurse into the executor again, we will append to another queue, ensuring task order consistency
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+ private java.util.ArrayDeque<Runnable> queued = new java.util.ArrayDeque<>();
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@Override
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public void execute(Runnable runnable) {
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- if (queued != null) {
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- throw new IllegalStateException("Already queued");
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+ if (queued == null) {
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+ queued = new java.util.ArrayDeque<>();
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}
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- queued = runnable;
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+ queued.add(runnable);
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}
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@Override
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public void run() {
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- Runnable task = queued;
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+ if (queued == null) {
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+ return;
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+ }
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+ java.util.ArrayDeque<Runnable> queue = queued;
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queued = null;
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- if (task != null) {
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+ Runnable task;
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+ while ((task = queue.pollFirst()) != null) {
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task.run();
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}
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}
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+ // Paper end
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};
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// CraftBukkit end
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