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8c5b837e05
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.
61 lines
3.3 KiB
Diff
61 lines
3.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Shane Freeder <theboyetronic@gmail.com>
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Date: Thu, 11 Apr 2024 16:37:44 +0100
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Subject: [PATCH] Fix premature player kicks on shutdown
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When the server is stopping, the default execution handler method will throw a
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RejectedExecutionException in order to prevent further execution, this causes
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us to lose the actual kick reason. To mitigate this, we'll use a seperate marked
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class in order to gracefully ignore these.
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diff --git a/src/main/java/io/papermc/paper/util/ServerStopRejectedExecutionException.java b/src/main/java/io/papermc/paper/util/ServerStopRejectedExecutionException.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..2c5cd77103c5a33d4349ab6b9ee2d8378bb60eb4
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--- /dev/null
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+++ b/src/main/java/io/papermc/paper/util/ServerStopRejectedExecutionException.java
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@@ -0,0 +1,20 @@
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+package io.papermc.paper.util;
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+
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+import java.util.concurrent.RejectedExecutionException;
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+
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+public class ServerStopRejectedExecutionException extends RejectedExecutionException {
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+ public ServerStopRejectedExecutionException() {
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+ }
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+
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+ public ServerStopRejectedExecutionException(final String message) {
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+ super(message);
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+ }
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+
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+ public ServerStopRejectedExecutionException(final String message, final Throwable cause) {
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+ super(message, cause);
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+ }
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+
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+ public ServerStopRejectedExecutionException(final Throwable cause) {
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+ super(cause);
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+ }
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+}
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diff --git a/src/main/java/net/minecraft/network/Connection.java b/src/main/java/net/minecraft/network/Connection.java
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index 4d9f1fc884050993287adfa4578a87da710623fb..a8dfe7a4b3d01bf75587be078f471d1ef1d7a667 100644
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--- a/src/main/java/net/minecraft/network/Connection.java
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+++ b/src/main/java/net/minecraft/network/Connection.java
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@@ -285,6 +285,7 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
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Connection.genericsFtw(packet, packetlistener);
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} catch (RunningOnDifferentThreadException cancelledpackethandleexception) {
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;
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+ } catch (io.papermc.paper.util.ServerStopRejectedExecutionException ignored) { // Paper - do not prematurely disconnect players on stop
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} catch (RejectedExecutionException rejectedexecutionexception) {
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this.disconnect((Component) Component.translatable("multiplayer.disconnect.server_shutdown"));
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} catch (ClassCastException classcastexception) {
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diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
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index 3fc8e626bc66f3cf32d165099ed7a6e4300e8146..741b5ba321d9bd854afb9b54f0e23c739c7f929c 100644
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--- a/src/main/java/net/minecraft/server/MinecraftServer.java
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+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
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@@ -2127,7 +2127,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
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@Override
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public void executeIfPossible(Runnable runnable) {
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if (this.isStopped()) {
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- throw new RejectedExecutionException("Server already shutting down");
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+ throw new io.papermc.paper.util.ServerStopRejectedExecutionException("Server already shutting down"); // Paper - do not prematurely disconnect players on stop
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} else {
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super.executeIfPossible(runnable);
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}
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