PaperMC/CraftBukkit-Patches/0020-Close-Unloaded-Save-Files.patch

From 621d8db4243864d2a6c265877e56ad14dd54d57f Mon Sep 17 00:00:00 2001
From: Antony Riley <antony@cyberiantiger.org>
Date: Wed, 27 Mar 2013 01:41:54 +0200
Subject: [PATCH] Close Unloaded Save Files


diff --git a/src/main/java/net/minecraft/server/RegionFileCache.java b/src/main/java/net/minecraft/server/RegionFileCache.java
index b07e7d5..5528019 100644
--- a/src/main/java/net/minecraft/server/RegionFileCache.java
+++ b/src/main/java/net/minecraft/server/RegionFileCache.java
@@ -10,7 +10,7 @@ import java.util.Map;
 
 public class RegionFileCache {
 
-    private static final Map<File, RegionFile> a = Maps.newHashMap();
+    public static final Map<File, RegionFile> a = Maps.newHashMap(); // Spigot - private -> public
 
     public static synchronized RegionFile a(File file, int i, int j) {
         File file1 = new File(file, "region");
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index a8a8e64..9e9435e 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -962,6 +962,31 @@ public final class CraftServer implements Server {
 
         worlds.remove(world.getName().toLowerCase());
         console.worlds.remove(console.worlds.indexOf(handle));
+
+        File parentFolder = world.getWorldFolder().getAbsoluteFile();
+
+        // Synchronized because access to RegionFileCache.a is guarded by this lock.
+        synchronized (RegionFileCache.class) {
+            // RegionFileCache.a should be RegionFileCache.cache
+            Iterator<Map.Entry<File, RegionFile>> i = RegionFileCache.a.entrySet().iterator();
+            while(i.hasNext()) {
+                Map.Entry<File, RegionFile> entry = i.next();
+                File child = entry.getKey().getAbsoluteFile();
+                while (child != null) {
+                    if (child.equals(parentFolder)) {
+                        i.remove();
+                        try {
+                            entry.getValue().c(); // Should be RegionFile.close();
+                        } catch (IOException ex) {
+                            getLogger().log(Level.SEVERE, null, ex);
+                        }
+                        break;
+                    }
+                    child = child.getParentFile();
+                }
+            }
+        }
+
         return true;
     }
 
-- 
2.1.4