Paper/Spigot-API-Patches/0099-Close-Plugin-Class-Loaders-on-Disable.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Tue, 1 May 2018 21:33:35 -0400
Subject: [PATCH] Close Plugin Class Loaders on Disable
This should close more memory leaks from /reload and disabling plugins,
by closing the class loader and the jar file.
diff --git a/src/main/java/org/bukkit/plugin/PluginLoader.java b/src/main/java/org/bukkit/plugin/PluginLoader.java
index a88733f1cd1ddb5d85ab1b0e6af4fd5b80bbc1c6..6ab9cd8213cbe35943748dcf42948d5fc048c84c 100644
--- a/src/main/java/org/bukkit/plugin/PluginLoader.java
+++ b/src/main/java/org/bukkit/plugin/PluginLoader.java
2019-04-23 06:47:07 +02:00
@@ -77,4 +77,18 @@ public interface PluginLoader {
* @param plugin Plugin to disable
*/
public void disablePlugin(@NotNull Plugin plugin);
+ // Paper start - close Classloader on disable
+ /**
+ * Disables the specified plugin
+ * <p>
+ * Attempting to disable a plugin that is not enabled will have no effect
+ *
+ * @param plugin Plugin to disable
+ * @param closeClassloader if the classloader for the Plugin should be closed
+ */
+ // provide default to allow other PluginLoader implementations to work
+ default public void disablePlugin(@NotNull Plugin plugin, boolean closeClassloader) {
+ disablePlugin(plugin);
+ }
+ // Paper end - close Classloader on disable
}
diff --git a/src/main/java/org/bukkit/plugin/PluginManager.java b/src/main/java/org/bukkit/plugin/PluginManager.java
index 41e26451fe12d8e6e0ef73c85731b24b4e3f200c..86cc5025ad98f7a752c51713b7cd6a39d5136ecc 100644
--- a/src/main/java/org/bukkit/plugin/PluginManager.java
+++ b/src/main/java/org/bukkit/plugin/PluginManager.java
2019-04-23 06:47:07 +02:00
@@ -161,6 +161,18 @@ public interface PluginManager {
*/
public void disablePlugin(@NotNull Plugin plugin);
+ // Paper start - close Classloader on disable
+ /**
+ * Disables the specified plugin
+ * <p>
+ * Attempting to disable a plugin that is not enabled will have no effect
+ *
+ * @param plugin Plugin to disable
+ * @param closeClassloader if the classloader for the Plugin should be closed
+ */
+ public void disablePlugin(@NotNull Plugin plugin, boolean closeClassloader);
+ // Paper end - close Classloader on disable
+
/**
* Gets a {@link Permission} from its fully qualified name
*
diff --git a/src/main/java/org/bukkit/plugin/SimplePluginManager.java b/src/main/java/org/bukkit/plugin/SimplePluginManager.java
2020-06-25 03:10:30 +02:00
index 8b33d914d29897c0276f9e2e7ce83bd2c316d5e2..a7393d2830b95d7167121b02066a3f357cee6085 100644
--- a/src/main/java/org/bukkit/plugin/SimplePluginManager.java
+++ b/src/main/java/org/bukkit/plugin/SimplePluginManager.java
@@ -492,17 +492,28 @@ public final class SimplePluginManager implements PluginManager {
2019-05-06 04:58:04 +02:00
@Override
public void disablePlugins() {
+ disablePlugins(false);
+ }
+
+ public void disablePlugins(boolean closeClassloaders) {
+ // Paper end - close Classloader on disable
Plugin[] plugins = getPlugins();
for (int i = plugins.length - 1; i >= 0; i--) {
- disablePlugin(plugins[i]);
+ disablePlugin(plugins[i], closeClassloaders); // Paper - close Classloader on disable
}
}
2019-05-06 04:58:04 +02:00
@Override
public void disablePlugin(@NotNull final Plugin plugin) {
+ disablePlugin(plugin, false);
+ }
+
2019-05-06 04:58:04 +02:00
+ @Override
+ public void disablePlugin(@NotNull final Plugin plugin, boolean closeClassloader) {
+ // Paper end - close Classloader on disable
if (plugin.isEnabled()) {
try {
- plugin.getPluginLoader().disablePlugin(plugin);
+ plugin.getPluginLoader().disablePlugin(plugin, closeClassloader); // Paper - close Classloader on disable
} catch (Throwable ex) {
handlePluginException("Error occurred (in the plugin loader) while disabling "
+ plugin.getDescription().getFullName() + " (Is it up to date?)", ex, plugin); // Paper
@@ -557,7 +568,7 @@ public final class SimplePluginManager implements PluginManager {
2019-05-06 04:58:04 +02:00
@Override
public void clearPlugins() {
synchronized (this) {
- disablePlugins();
+ disablePlugins(true); // Paper - close Classloader on disable
plugins.clear();
lookupNames.clear();
Updated Upstream (Bukkit/CraftBukkit/Spigot) 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: 93e39ce1 Clarify documentation regarding getMaterial with legacyName = true c3aeaea0 Improve dependency tracker 14c9d275 Add support for transitive depends in load access warning c8afe560 SPIGOT-5526: Add EntityEnterBlockEvent 6bb6f07d SPIGOT-5548: Show error that hints towards plugins misusing reflection ed75537d SPIGOT-5546: Fix bad depend access using wrong provider in message 4e4c0ee9 Fix buggy classloader warning triggering for all classes 89586a4c Print warning when loading classes from depends that have not been specified d4fe9680 Fix bug where disablePlugin could remove ConfigurationSerializable classes from other plugins 85e683b7 Add additional checkstyle checks 612fd8e1 Correct max page count in BookMeta docs fa8a9781 Correct max title length in BookMeta docs CraftBukkit Changes: ab13a117 SPIGOT-5550: Cancelled ProjectileLaunchEvent still plays sound for eggs 44016b1d SPIGOT-5538: Using javaw to run GUI prints input error e653ae76 SPIGOT-5526: Call EntityEnterBlockEvent for bees trying to enter hives 6515ea49 SPIGOT-5537: Bee nests generated by growing trees near flower have no bees d82b3149 Remove unused CraftWorld.getId method 10763a88 Change some block == AIR checks to isAir to catch CAVE_AIR Spigot Changes: f2c1cd15 Rebuild patches bcd458ad Reformat patches
2020-01-28 20:43:57 +01:00
dependencyGraph = GraphBuilder.directed().build();
diff --git a/src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java b/src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java
index 79ac529017aac059d13fe342f279e9c8faeba599..816c2b1797447ab315ceb6eda89d25f27d2bce98 100644
--- a/src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java
+++ b/src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java
@@ -322,7 +322,7 @@ public final class JavaPluginLoader implements PluginLoader {
} catch (Throwable ex) {
server.getLogger().log(Level.SEVERE, "Error occurred while enabling " + plugin.getDescription().getFullName() + " (Is it up to date?)", ex);
// Paper start - Disable plugins that fail to load
- disablePlugin(jPlugin);
+ server.getPluginManager().disablePlugin(jPlugin, true); // Paper - close Classloader on disable - She's dead jim
return;
// Paper end
}
@@ -335,6 +335,12 @@ public final class JavaPluginLoader implements PluginLoader {
2019-05-06 04:58:04 +02:00
@Override
public void disablePlugin(@NotNull Plugin plugin) {
+ // Paper start - close Classloader on disable
+ disablePlugin(plugin, false); // Retain old behavior unless requested
+ }
+
+ public void disablePlugin(@NotNull Plugin plugin, boolean closeClassloader) {
+ // Paper end - close Class Loader on disable
Validate.isTrue(plugin instanceof JavaPlugin, "Plugin is not associated with this PluginLoader");
if (plugin.isEnabled()) {
@@ -367,6 +373,16 @@ public final class JavaPluginLoader implements PluginLoader {
} catch (IOException ex) {
//
}
+ // Paper start - close Class Loader on disable
+ try {
+ if (closeClassloader) {
+ loader.close();
+ }
+ } catch (IOException e) {
+ server.getLogger().log(Level.WARNING, "Error closing the Plugin Class Loader for " + plugin.getDescription().getFullName());
+ e.printStackTrace();
+ }
+ // Paper end
}
}
}