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This work is 100% unfinished. I am pushing it up so that we as a team can work on this update. Do not try to use this branch. You will fail.
149 lines
6.3 KiB
Diff
149 lines
6.3 KiB
Diff
From 9e505b4488cc6cb5a94d213092c949a2895c7cad Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Tue, 1 May 2018 21:33:35 -0400
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Subject: [PATCH] Close Plugin Class Loaders on Disable
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This should close more memory leaks from /reload and disabling plugins,
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by closing the class loader and the jar file.
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diff --git a/src/main/java/org/bukkit/plugin/PluginLoader.java b/src/main/java/org/bukkit/plugin/PluginLoader.java
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index e7981a1d..d34756f1 100644
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--- a/src/main/java/org/bukkit/plugin/PluginLoader.java
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+++ b/src/main/java/org/bukkit/plugin/PluginLoader.java
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@@ -73,4 +73,19 @@ public interface PluginLoader {
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* @param plugin Plugin to disable
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*/
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public void disablePlugin(Plugin plugin);
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+
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+ // Paper start - close Classloader on disable
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+ /**
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+ * Disables the specified plugin
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+ * <p>
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+ * Attempting to disable a plugin that is not enabled will have no effect
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+ *
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+ * @param plugin Plugin to disable
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+ * @param closeClassloader if the classloader for the Plugin should be closed
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+ */
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+ // provide default to allow other PluginLoader implementations to work
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+ default public void disablePlugin(Plugin plugin, boolean closeClassloader) {
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+ disablePlugin(plugin);
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+ }
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+ // Paper end - close Classloader on disable
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}
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diff --git a/src/main/java/org/bukkit/plugin/PluginManager.java b/src/main/java/org/bukkit/plugin/PluginManager.java
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index e5638d56..b72d5a9b 100644
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--- a/src/main/java/org/bukkit/plugin/PluginManager.java
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+++ b/src/main/java/org/bukkit/plugin/PluginManager.java
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@@ -154,6 +154,18 @@ public interface PluginManager {
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*/
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public void disablePlugin(Plugin plugin);
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+ // Paper start - close Classloader on disable
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+ /**
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+ * Disables the specified plugin
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+ * <p>
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+ * Attempting to disable a plugin that is not enabled will have no effect
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+ *
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+ * @param plugin Plugin to disable
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+ * @param closeClassloader if the classloader for the Plugin should be closed
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+ */
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+ public void disablePlugin(Plugin plugin, boolean closeClassloader);
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+ // Paper end - close Classloader on disable
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+
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/**
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* Gets a {@link Permission} from its fully qualified name
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*
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diff --git a/src/main/java/org/bukkit/plugin/SimplePluginManager.java b/src/main/java/org/bukkit/plugin/SimplePluginManager.java
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index bd0588a2..cb2b0b9c 100644
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--- a/src/main/java/org/bukkit/plugin/SimplePluginManager.java
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+++ b/src/main/java/org/bukkit/plugin/SimplePluginManager.java
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@@ -412,17 +412,29 @@ public final class SimplePluginManager implements PluginManager {
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}
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}
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+ // Paper start - close Classloader on disable
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public void disablePlugins() {
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+ disablePlugins(false);
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+ }
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+
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+ public void disablePlugins(boolean closeClassloaders) {
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+ // Paper end - close Classloader on disable
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Plugin[] plugins = getPlugins();
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for (int i = plugins.length - 1; i >= 0; i--) {
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- disablePlugin(plugins[i]);
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+ disablePlugin(plugins[i], closeClassloaders); // Paper - close Classloader on disable
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}
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}
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- public void disablePlugin(final Plugin plugin) {
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+ // Paper start - close Classloader on disable
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+ public void disablePlugin(Plugin plugin) {
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+ disablePlugin(plugin, false);
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+ }
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+
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+ public void disablePlugin(final Plugin plugin, boolean closeClassloader) {
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+ // Paper end - close Classloader on disable
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if (plugin.isEnabled()) {
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try {
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- plugin.getPluginLoader().disablePlugin(plugin);
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+ plugin.getPluginLoader().disablePlugin(plugin, closeClassloader); // Paper - close Classloader on disable
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} catch (Throwable ex) {
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handlePluginException("Error occurred (in the plugin loader) while disabling "
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+ plugin.getDescription().getFullName() + " (Is it up to date?)", ex, plugin); // Paper
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@@ -468,7 +480,7 @@ public final class SimplePluginManager implements PluginManager {
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public void clearPlugins() {
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synchronized (this) {
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- disablePlugins();
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+ disablePlugins(true); // Paper - close Classloader on disable
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plugins.clear();
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lookupNames.clear();
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HandlerList.unregisterAll();
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diff --git a/src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java b/src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java
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index 72d506d1..3cff01b6 100644
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--- a/src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java
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+++ b/src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java
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@@ -319,7 +319,7 @@ public final class JavaPluginLoader implements PluginLoader {
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} catch (Throwable ex) {
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server.getLogger().log(Level.SEVERE, "Error occurred while enabling " + plugin.getDescription().getFullName() + " (Is it up to date?)", ex);
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// Paper start - Disable plugins that fail to load
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- disablePlugin(jPlugin);
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+ disablePlugin(jPlugin, true); // Paper - close Classloader on disable - She's dead jim
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return;
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// Paper end
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}
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@@ -330,7 +330,13 @@ public final class JavaPluginLoader implements PluginLoader {
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}
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}
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+ // Paper start - close Classloader on disable
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public void disablePlugin(Plugin plugin) {
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+ disablePlugin(plugin, false); // Retain old behavior unless requested
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+ }
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+
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+ public void disablePlugin(Plugin plugin, boolean closeClassloader) {
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+ // Paper end - close Class Loader on disable
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Validate.isTrue(plugin instanceof JavaPlugin, "Plugin is not associated with this PluginLoader");
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if (plugin.isEnabled()) {
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@@ -357,6 +363,16 @@ public final class JavaPluginLoader implements PluginLoader {
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for (String name : names) {
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removeClass(name);
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}
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+ // Paper start - close Class Loader on disable
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+ try {
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+ if (closeClassloader) {
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+ loader.close();
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+ }
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+ } catch (IOException e) {
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+ server.getLogger().log(Level.WARNING, "Error closing the Plugin Class Loader for " + plugin.getDescription().getFullName());
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+ e.printStackTrace();
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+ }
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+ // Paper end
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}
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}
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}
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--
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2.18.0
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