papermc/CraftBukkit-Patches/0154-Fix-Some-Memory-Leaks.patch

From d12ee6d274aa3aaf98fd7e8a42c5d900bfebcce8 Mon Sep 17 00:00:00 2001
From: md_5 <git@md-5.net>
Date: Sun, 21 Sep 2014 10:06:01 +1000
Subject: [PATCH] Fix Some Memory Leaks


diff --git a/src/main/java/net/minecraft/server/EnchantmentManager.java b/src/main/java/net/minecraft/server/EnchantmentManager.java
index c624190..d617228 100644
--- a/src/main/java/net/minecraft/server/EnchantmentManager.java
+++ b/src/main/java/net/minecraft/server/EnchantmentManager.java
@@ -166,7 +166,10 @@ public class EnchantmentManager {
         if (entity instanceof EntityHuman) {
             a((EnchantmentModifier) EnchantmentManager.d, entityliving.bz());
         }
-
+        // Spigot start
+        d.b = null;
+        d.a = null;
+        // Spigot end
     }
 
     public static void b(EntityLiving entityliving, Entity entity) {
@@ -179,7 +182,10 @@ public class EnchantmentManager {
         if (entityliving instanceof EntityHuman) {
             a((EnchantmentModifier) EnchantmentManager.e, entityliving.bz());
         }
-
+        // Spigot start
+        e.a = null;
+        e.b = null;
+        // Spigot end
     }
 
     public static int a(EntityLiving entityliving) {
diff --git a/src/main/java/net/minecraft/server/EntityInsentient.java b/src/main/java/net/minecraft/server/EntityInsentient.java
index 5ef61d9..214c0ca 100644
--- a/src/main/java/net/minecraft/server/EntityInsentient.java
+++ b/src/main/java/net/minecraft/server/EntityInsentient.java
@@ -1,5 +1,6 @@
 package net.minecraft.server;
 
+import java.lang.ref.WeakReference; // Spigot
 import java.util.Iterator;
 import java.util.List;
 import java.util.UUID;
@@ -24,7 +25,7 @@ public abstract class EntityInsentient extends EntityLiving {
     protected NavigationAbstract navigation;
     public PathfinderGoalSelector goalSelector; // PAIL protected final to public
     public PathfinderGoalSelector targetSelector; // PAIL protected final to public
-    private EntityLiving goalTarget;
+    private WeakReference<EntityLiving> goalTarget = new WeakReference<EntityLiving>(null);
     private EntitySenses bi;
     private ItemStack[] equipment = new ItemStack[5];
     public float[] dropChances = new float[5];
@@ -83,7 +84,7 @@ public abstract class EntityInsentient extends EntityLiving {
     }
 
     public EntityLiving getGoalTarget() {
-        return this.goalTarget;
+        return this.goalTarget.get(); // Spigot
     }
 
     public void setGoalTarget(EntityLiving entityliving) {
@@ -116,7 +117,7 @@ public abstract class EntityInsentient extends EntityLiving {
                 entityliving = null;
             }
         }
-        this.goalTarget = entityliving;
+        this.goalTarget = new WeakReference<EntityLiving>(entityliving); // Spigot
         // CraftBukkit end
     }
 
diff --git a/src/main/java/net/minecraft/server/NetworkManager.java b/src/main/java/net/minecraft/server/NetworkManager.java
index b4eb893..e34f0f1 100644
--- a/src/main/java/net/minecraft/server/NetworkManager.java
+++ b/src/main/java/net/minecraft/server/NetworkManager.java
@@ -169,6 +169,7 @@ public class NetworkManager extends SimpleChannelInboundHandler {
     public void close(IChatBaseComponent ichatbasecomponent) {
         // Spigot Start
         this.preparing = false;
+        this.h.clear();
         // Spigot End
         if (this.i.isOpen()) {
             this.i.close(); // We can't wait as this may be called from an event loop.
diff --git a/src/main/java/net/minecraft/server/PathfinderGoalSwell.java b/src/main/java/net/minecraft/server/PathfinderGoalSwell.java
index d1e77a8..d6fc521 100644
--- a/src/main/java/net/minecraft/server/PathfinderGoalSwell.java
+++ b/src/main/java/net/minecraft/server/PathfinderGoalSwell.java
@@ -3,7 +3,7 @@ package net.minecraft.server;
 public class PathfinderGoalSwell extends PathfinderGoal {
 
     EntityCreeper a;
-    EntityLiving b;
+    // EntityLiving b; // Spigot
 
     public PathfinderGoalSwell(EntityCreeper entitycreeper) {
         this.a = entitycreeper;
@@ -18,22 +18,25 @@ public class PathfinderGoalSwell extends PathfinderGoal {
 
     public void c() {
         this.a.getNavigation().n();
-        this.b = this.a.getGoalTarget();
+        // this.b = this.a.getGoalTarget(); // Spigot
     }
 
     public void d() {
-        this.b = null;
+        // this.b = null; // Spigot
     }
 
     public void e() {
-        if (this.b == null) {
+        // Spigot start
+        EntityLiving b = this.a.getGoalTarget();
+        if (b == null) {
             this.a.a(-1);
-        } else if (this.a.h(this.b) > 49.0D) {
+        } else if (this.a.h(b) > 49.0D) {
             this.a.a(-1);
-        } else if (!this.a.getEntitySenses().a(this.b)) {
+        } else if (!this.a.getEntitySenses().a(b)) {
             this.a.a(-1);
         } else {
             this.a.a(1);
         }
+        // Spigot end
     }
 }
-- 
2.1.0