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Revert "Updated Upstream (Bukkit/CraftBukkit/Spigot) (#5636)"

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This reverts commit 11c2ef5d2f.
This commit is contained in:
Shane Freeder
2021-05-15 22:10:57 +01:00
parent 11c2ef5d2f
commit b5488de2ba
11 changed files with 62 additions and 40 deletions
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22
Spigot-API-Patches/Make-JavaPluginLoader-thread-safe.patch
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@@ -8,31 +8,37 @@ diff --git a/src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java b/src/ma
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java
+++ b/src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java
@@ -0,0 +0,0 @@ import org.yaml.snakeyaml.error.YAMLException;
public final class JavaPluginLoader implements PluginLoader {
@@ -0,0 +0,0 @@ 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 ConcurrentHashMap<String, Class<?>>();
+ private final Map<String, java.util.concurrent.locks.ReentrantReadWriteLock> classLoadLock = new java.util.HashMap<String, java.util.concurrent.locks.ReentrantReadWriteLock>(); // Paper
+ private final Map<String, Integer> classLoadLockCount = new java.util.HashMap<String, Integer>(); // Paper
private final List<PluginClassLoader> loaders = new CopyOnWriteArrayList<PluginClassLoader>();
private final LibraryLoader libraryLoader;
/**
@@ -0,0 +0,0 @@ public final class JavaPluginLoader implements PluginLoader {
@Nullable
Class<?> getClassByName(final String name, boolean resolve, PluginDescriptionFile description) {
Class<?> getClassByName(final String name) {
+ // Paper start - make MT safe
Class<?> cachedClass = classes.get(name);
+ if (cachedClass != null) {
+ return cachedClass;
+ }
+ java.util.concurrent.locks.ReentrantReadWriteLock lock;
+ synchronized (classLoadLock) {
+ lock = classLoadLock.computeIfAbsent(name, (x) -> new java.util.concurrent.locks.ReentrantReadWriteLock());
+ classLoadLockCount.compute(name, (x, prev) -> prev != null ? prev + 1 : 1);
+ }
+ lock.writeLock().lock();try {
+ cachedClass = classes.get(name);
+ // Paper end
for (PluginClassLoader loader : loaders) {
try {
return loader.loadClass0(name, resolve, false, ((SimplePluginManager) server.getPluginManager()).isTransitiveDepend(description, loader.plugin.getDescription()));
} catch (ClassNotFoundException cnfe) {
if (cachedClass != null) {
return cachedClass;
@@ -0,0 +0,0 @@ public final class JavaPluginLoader implements PluginLoader {
}
}
}
+ // Paper start - make MT safe