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Mirror von https://github.com/PaperMC/Paper.git synchronisiert 2024-12-16 03:20:07 +01:00
Paper/Spigot-API-Patches/0099-Close-Plugin-Class-Loaders-on-Disable.patch
Zach Brown 70ce6ce831
Move version command update checking to the implementation
This makes it easier for downstream projects (forks) to replace the
version fetching system with their own. It is as simple as implementing
an interface and overriding the default implementation of
org.bukkit.UnsafeValues#getVersionFetcher()

It also makes it easier for us to organize things like the version
history feature.

Lastly I have updated the paper implementation to check against the site
API rather than against jenkins.
2019-05-27 04:13:41 -05:00

145 Zeilen
6.2 KiB
Diff

From 63f352493cf36bf80eb1d97a0ea3d897b5766bd3 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 a88733f1..6ab9cd82 100644
--- a/src/main/java/org/bukkit/plugin/PluginLoader.java
+++ b/src/main/java/org/bukkit/plugin/PluginLoader.java
@@ -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 41e26451..86cc5025 100644
--- a/src/main/java/org/bukkit/plugin/PluginManager.java
+++ b/src/main/java/org/bukkit/plugin/PluginManager.java
@@ -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
index 4cbec1f1..da3cd63b 100644
--- a/src/main/java/org/bukkit/plugin/SimplePluginManager.java
+++ b/src/main/java/org/bukkit/plugin/SimplePluginManager.java
@@ -428,17 +428,28 @@ public final class SimplePluginManager implements PluginManager {
@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
}
}
@Override
public void disablePlugin(@NotNull final Plugin plugin) {
+ disablePlugin(plugin, false);
+ }
+
+ @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
@@ -485,7 +496,7 @@ public final class SimplePluginManager implements PluginManager {
@Override
public void clearPlugins() {
synchronized (this) {
- disablePlugins();
+ disablePlugins(true); // Paper - close Classloader on disable
plugins.clear();
lookupNames.clear();
HandlerList.unregisterAll();
diff --git a/src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java b/src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java
index 06b6724f..bc7bf6a3 100644
--- a/src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java
+++ b/src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java
@@ -332,7 +332,7 @@ 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
}
@@ -345,6 +345,12 @@ public final class JavaPluginLoader implements PluginLoader {
@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()) {
@@ -371,6 +377,16 @@ public final class JavaPluginLoader implements PluginLoader {
for (String name : names) {
removeClass(name);
}
+ // 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
}
}
}
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