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geforkt von Mirrors/Paper
Paper/Bukkit-Patches/0027-Ease-ClassLoader-Deadlocks-Where-Possible.patch
Zach Brown cab333b217 Rebase (Update) from upstream SpigotMC
Don't send requests of every player was found in the global api cache SpigotMC/Spigot@841270ff1e
Correctly set the response code for the cached lookups and return the ... SpigotMC/Spigot@f170b7899c
Don't try and re-set the global api cache on reload SpigotMC/Spigot@b410a00a66
Use a compile time sneaky throw hack. SpigotMC/Spigot@508462b96b
Fix a missed rename in WorldGenGroundBush SpigotMC/Spigot@0614d8fae9
2014-11-28 14:19:07 -06:00

68 Zeilen
3.6 KiB
Diff

From eefb473aac1d8fa827fa6fb06ae9831ed260b88b Mon Sep 17 00:00:00 2001
From: md_5 <git@md-5.net>
Date: Wed, 16 Jul 2014 17:24:21 +1000
Subject: [PATCH] Ease ClassLoader Deadlocks Where Possible
When on Java 7 we can register the classloader as parallel capable to prevent deadlocks caused by certain scenarios. Due to the nature of PluginClassLoader this isn't completely safe, but we can make it safer by switching to concurrency focused collections. Either way this is far better than crashing the server.
diff --git a/src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java b/src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java
index 6611342..a845e81 100644
--- a/src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java
+++ b/src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java
@@ -48,7 +48,7 @@ import org.yaml.snakeyaml.error.YAMLException;
public final class JavaPluginLoader implements PluginLoader {
final Server server;
private final Pattern[] fileFilters = new Pattern[] { Pattern.compile("\\.jar$"), };
- private final Map<String, Class<?>> classes = new HashMap<String, Class<?>>();
+ private final Map<String, Class<?>> classes = new java.util.concurrent.ConcurrentHashMap<String, Class<?>>(); // Spigot
private final Map<String, PluginClassLoader> loaders = new LinkedHashMap<String, PluginClassLoader>();
public static final CustomTimingsHandler pluginParentTimer = new CustomTimingsHandler("** Plugins"); // Spigot
diff --git a/src/main/java/org/bukkit/plugin/java/PluginClassLoader.java b/src/main/java/org/bukkit/plugin/java/PluginClassLoader.java
index 13f8633..4cffa13 100644
--- a/src/main/java/org/bukkit/plugin/java/PluginClassLoader.java
+++ b/src/main/java/org/bukkit/plugin/java/PluginClassLoader.java
@@ -17,7 +17,7 @@ import org.bukkit.plugin.PluginDescriptionFile;
*/
final class PluginClassLoader extends URLClassLoader {
private final JavaPluginLoader loader;
- private final Map<String, Class<?>> classes = new HashMap<String, Class<?>>();
+ private final Map<String, Class<?>> classes = new java.util.concurrent.ConcurrentHashMap<String, Class<?>>(); // Spigot
private final PluginDescriptionFile description;
private final File dataFolder;
private final File file;
@@ -25,6 +25,30 @@ final class PluginClassLoader extends URLClassLoader {
private JavaPlugin pluginInit;
private IllegalStateException pluginState;
+ // Spigot Start
+ static
+ {
+ try
+ {
+ java.lang.reflect.Method method = ClassLoader.class.getDeclaredMethod( "registerAsParallelCapable" );
+ if ( method != null )
+ {
+ boolean oldAccessible = method.isAccessible();
+ method.setAccessible( true );
+ method.invoke( null );
+ method.setAccessible( oldAccessible );
+ org.bukkit.Bukkit.getLogger().log( java.util.logging.Level.INFO, "Set PluginClassLoader as parallel capable" );
+ }
+ } catch ( NoSuchMethodException ex )
+ {
+ // Ignore
+ } catch ( Exception ex )
+ {
+ org.bukkit.Bukkit.getLogger().log( java.util.logging.Level.WARNING, "Error setting PluginClassLoader as parallel capable", ex );
+ }
+ }
+ // Spigot End
+
PluginClassLoader(final JavaPluginLoader loader, final ClassLoader parent, final PluginDescriptionFile description, final File dataFolder, final File file) throws InvalidPluginException, MalformedURLException {
super(new URL[] {file.toURI().toURL()}, parent);
Validate.notNull(loader, "Loader cannot be null");
--
1.9.1