Make caching for getHandlerList MethodHandles

Brikster · Nov 18, 2023 · 82bff91 · 82bff91
1 parent f392125
commit 82bff91
Showing 1 changed file with 13 additions and 3 deletions.
diff --git a/spigot/src/main/java/ru/brikster/chatty/util/ListenerUtil.java b/spigot/src/main/java/ru/brikster/chatty/util/ListenerUtil.java
@@ -1,20 +1,30 @@
 package ru.brikster.chatty.util;
 
+import com.google.common.cache.Cache;
+import com.google.common.cache.CacheBuilder;
 import lombok.experimental.UtilityClass;
 import org.bukkit.event.HandlerList;
 import org.bukkit.plugin.Plugin;
 
+import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodHandles;
 import java.lang.invoke.MethodType;
+import java.time.Duration;
 
 @UtilityClass
 public class ListenerUtil {
 
+    private final static Cache<Class<?>, MethodHandle> EVENT_CLASS_METHOD_HANDLE_CACHE = CacheBuilder
+            .newBuilder()
+            .expireAfterAccess(Duration.ofMinutes(30))
+            .build();
+
     public void unregister(Class<?> eventClazz, Plugin plugin) {
         try {
-            HandlerList handlerList = (HandlerList) MethodHandles.publicLookup()
-                    .findStatic(eventClazz, "getHandlerList", MethodType.methodType(HandlerList.class))
-                    .invoke();
+            MethodHandle methodHandle = EVENT_CLASS_METHOD_HANDLE_CACHE.get(eventClazz, () -> MethodHandles.publicLookup()
+                    .findStatic(eventClazz, "getHandlerList", MethodType.methodType(HandlerList.class)));
+
+            HandlerList handlerList = (HandlerList) methodHandle.invoke();
             handlerList.unregister(plugin);
         } catch (Throwable e) {
             throw new RuntimeException(e);