41647af74c
We cannot put blocking network I/O onto the worldgen threads, this will crash the server if it stalls
63 lines
2.9 KiB
Diff
63 lines
2.9 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: Sun, 10 May 2020 22:16:17 -0400
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Subject: [PATCH] Wait for Async Tasks during shutdown
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Server.reload() had this logic to give time for tasks to shutdown,
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however shutdown did not...
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Adds a 5 second grace period for any async tasks to finish and warns
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if any are still running after that delay just as reload does.
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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 407cfb88d3a6c9c699ca42df2642d9f6fad87cbd..df40ab29f928fa31ccedb9afb64da7e193a8d1f7 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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@@ -907,6 +907,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
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// CraftBukkit start
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if (this.server != null) {
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this.server.disablePlugins();
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+ this.server.waitForAsyncTasksShutdown(); // Paper
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}
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// CraftBukkit end
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if (this.getConnection() != null) {
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diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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index 08a381e66471edab5c133af7dc7edb0731722ae7..0e4a3acef2f3e422a01e76757faa80c4005ef5ca 100644
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--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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@@ -1007,6 +1007,35 @@ public final class CraftServer implements Server {
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org.spigotmc.WatchdogThread.hasStarted = true; // Paper - Disable watchdog early timeout on reload
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}
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+ // Paper start
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+ public void waitForAsyncTasksShutdown() {
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+ int pollCount = 0;
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+
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+ // Wait for at most 5 seconds for plugins to close their threads
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+ while (pollCount < 10*5 && getScheduler().getActiveWorkers().size() > 0) {
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+ try {
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+ Thread.sleep(100);
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+ } catch (InterruptedException e) {}
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+ pollCount++;
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+ }
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+
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+ List<BukkitWorker> overdueWorkers = getScheduler().getActiveWorkers();
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+ for (BukkitWorker worker : overdueWorkers) {
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+ Plugin plugin = worker.getOwner();
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+ String author = "<NoAuthorGiven>";
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+ if (plugin.getDescription().getAuthors().size() > 0) {
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+ author = plugin.getDescription().getAuthors().get(0);
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+ }
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+ getLogger().log(Level.SEVERE, String.format(
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+ "Nag author: '%s' of '%s' about the following: %s",
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+ author,
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+ plugin.getDescription().getName(),
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+ "This plugin is not properly shutting down its async tasks when it is being shut down. This task may throw errors during the final shutdown logs and might not complete before process dies."
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+ ));
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+ }
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+ }
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+ // Paper end
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+
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@Override
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public void reloadData() {
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ReloadCommand.reload(console);
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