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Firstly, the old methods all routed to the CompletableFuture method. However, the CF method could not guarantee that if the caller was off-main that the future would be "completed" on-main. Since the callback methods used the CF one, this meant that the callback methods did not guarantee that the callbacks were to be called on the main thread. Now, all methods route to getChunkAtAsync(x, z, gen, urgent, cb) so that the methods with the callback are guaranteed to invoke the callback on the main thread. The CF behavior remains unchanged; it may still appear to complete on main if invoked off-main. Secondly, remove the scheduleOnMain invocation in the async chunk completion. This unnecessarily delays the callback by 1 tick. Thirdly, add getChunksAtAsync(minX, minZ, maxX, maxZ, ...) which will load chunks within an area. This method is provided as a helper as keeping all chunks loaded within an area can be complicated to implement for plugins (due to the lacking ticket API), and is already implemented internally anyways. Fourthly, remove the ticket addition that occured with getChunkAt and getChunkAtAsync. The ticket addition may delay the unloading of the chunk unnecessarily. It also fixes a very rare timing bug where the future/callback would be completed after the chunk unloads.
27 lines
1.3 KiB
Diff
27 lines
1.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aleksander Jagiello <themolkapl@gmail.com>
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Date: Sun, 24 Jan 2021 22:17:54 +0100
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Subject: [PATCH] Add getMainThreadExecutor to BukkitScheduler
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diff --git a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
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index a700dac93499650fdaa0af06ff77607ffa4dbbb2..6fef86e47e37eab6721cfd67d494afb25a2ded68 100644
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--- a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
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+++ b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
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@@ -637,4 +637,15 @@ public class CraftScheduler implements BukkitScheduler {
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public BukkitTask runTaskTimerAsynchronously(Plugin plugin, BukkitRunnable task, long delay, long period) throws IllegalArgumentException {
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throw new UnsupportedOperationException("Use BukkitRunnable#runTaskTimerAsynchronously(Plugin, long, long)");
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}
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+
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+ // Paper start - add getMainThreadExecutor
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+ @Override
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+ public Executor getMainThreadExecutor(Plugin plugin) {
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+ Preconditions.checkArgument(plugin != null, "Plugin cannot be null");
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+ return command -> {
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+ Preconditions.checkArgument(command != null, "Command cannot be null");
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+ this.runTask(plugin, command);
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+ };
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+ }
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+ // Paper end
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}
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