Update BufferUtils.java

Fixes #395

jme3-core/src/main/java/com/jme3/util/BufferUtils.java

@@ -51,7 +51,6 @@ import java.nio.IntBuffer;
 import java.nio.LongBuffer;
 import java.nio.ShortBuffer;
 import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
@@ -1268,7 +1267,6 @@ public final class BufferUtils {
             System.out.println(store.toString());
         }
     }
-    private static final AtomicBoolean loadedMethods = new AtomicBoolean(false);
     private static Method cleanerMethod = null;
     private static Method cleanMethod = null;
     private static Method viewedBufferMethod = null;
@@ -1288,31 +1286,23 @@ public final class BufferUtils {
         }
     }
 
-    private static void loadCleanerMethods() {
-        // If its already true, exit, if not, set it to true.
-        if (BufferUtils.loadedMethods.getAndSet(true)) {
-            return;
+    static {
+        // Oracle JRE / OpenJDK
+        cleanerMethod = loadMethod("sun.nio.ch.DirectBuffer", "cleaner");
+        cleanMethod = loadMethod("sun.misc.Cleaner", "clean");
+        viewedBufferMethod = loadMethod("sun.nio.ch.DirectBuffer", "viewedBuffer");
+        if (viewedBufferMethod == null) {
+            // They changed the name in Java 7 (???)
+            viewedBufferMethod = loadMethod("sun.nio.ch.DirectBuffer", "attachment");
         }
-        // This could potentially be called many times if used from multiple
-        // threads
-        synchronized (BufferUtils.loadedMethods) {
-            // Oracle JRE / OpenJDK
-            cleanerMethod = loadMethod("sun.nio.ch.DirectBuffer", "cleaner");
-            cleanMethod = loadMethod("sun.misc.Cleaner", "clean");
-            viewedBufferMethod = loadMethod("sun.nio.ch.DirectBuffer", "viewedBuffer");
-            if (viewedBufferMethod == null) {
-                // They changed the name in Java 7 (???)
-                viewedBufferMethod = loadMethod("sun.nio.ch.DirectBuffer", "attachment");
-            }
 
-            // Apache Harmony
-            ByteBuffer bb = BufferUtils.createByteBuffer(1);
-            Class<?> clazz = bb.getClass();
-            try {
-                freeMethod = clazz.getMethod("free");
-            } catch (NoSuchMethodException ex) {
-            } catch (SecurityException ex) {
-            }
+        // Apache Harmony
+        ByteBuffer bb = BufferUtils.createByteBuffer(1);
+        Class<?> clazz = bb.getClass();
+        try {
+            freeMethod = clazz.getMethod("free");
+        } catch (NoSuchMethodException ex) {
+        } catch (SecurityException ex) {
         }
     }
 
@@ -1333,8 +1323,6 @@ public final class BufferUtils {
             return;
         }
 
-        BufferUtils.loadCleanerMethods();
-
         try {
             if (freeMethod != null) {
                 freeMethod.invoke(toBeDestroyed);