Paper/patches/server/0596-Name-craft-scheduler-threads-according-to-the-plugin.patch
Spottedleaf 8c5b837e05 Rework async chunk api implementation
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.
2024-11-18 23:00:59 -08:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Sun, 19 Jul 2020 15:17:01 -0700
Subject: [PATCH] Name craft scheduler threads according to the plugin using
them
Provides quick access to culprits running far more threads than
they should be
diff --git a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftAsyncTask.java b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftAsyncTask.java
index 365b7e7c665bec357fb76d1479bf17da6f603590..e97f6b76ef2fe21c7c2eca8d4a707e5866d70de9 100644
--- a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftAsyncTask.java
+++ b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftAsyncTask.java
@@ -25,7 +25,10 @@ class CraftAsyncTask extends CraftTask {
@Override
public void run() {
final Thread thread = Thread.currentThread();
- synchronized (this.workers) {
+ // Paper start - name threads according to running plugin
+ final String nameBefore = thread.getName();
+ thread.setName(nameBefore + " - " + this.getOwner().getName());
+ try { synchronized (this.workers) { // Paper end - name threads according to running plugin
if (this.getPeriod() == CraftTask.CANCEL) {
// Never continue running after cancelled.
// Checking this with the lock is important!
@@ -92,6 +95,7 @@ class CraftAsyncTask extends CraftTask {
}
}
}
+ } finally { thread.setName(nameBefore); } // Paper - name threads according to running plugin
}
LinkedList<BukkitWorker> getWorkers() {