- fix ReflectionAllocator use wrong buffer allocator to initialize

- add jemalloc allocator

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

@@ -0,0 +1,55 @@
+package com.jme3.util;
+
+import static org.lwjgl.system.jemalloc.JEmalloc.*;
+
+import java.nio.Buffer;
+import java.nio.ByteBuffer;
+import java.nio.DoubleBuffer;
+import java.nio.FloatBuffer;
+import java.nio.IntBuffer;
+import java.nio.LongBuffer;
+import java.nio.ShortBuffer;
+
+/**
+ * This class contains a <code>jemalloc</code> allocator which is a general purpose <code>malloc(3)</code> implementation.
+ * <p>
+ * <b>LWJGL 3 is required</b> because it includes the jemalloc bindings and binaries.
+ * </p>
+ */
+public final class JemallocAllocator implements BufferAllocator
+{
+	@Override
+	public void destroyDirectBuffer(Buffer buffer)
+	{
+		if (buffer instanceof ByteBuffer)
+		{
+			je_free((ByteBuffer) buffer);
+		}
+		else if (buffer instanceof ShortBuffer)
+		{
+			je_free((ShortBuffer) buffer);
+		}
+		else if (buffer instanceof IntBuffer)
+		{
+			je_free((IntBuffer) buffer);
+		}
+		else if (buffer instanceof LongBuffer)
+		{
+			je_free((LongBuffer) buffer);
+		}
+		else if (buffer instanceof FloatBuffer)
+		{
+			je_free((FloatBuffer) buffer);
+		}
+		else if (buffer instanceof DoubleBuffer)
+		{
+			je_free((DoubleBuffer) buffer);
+		}
+	}
+
+	@Override
+	public ByteBuffer allocate(int size)
+	{
+		return je_malloc(size);
+	}
+}

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

@@ -60,7 +60,7 @@ public final class ReflectionAllocator implements BufferAllocator {
 		}
 
 		// Apache Harmony
-		ByteBuffer bb = BufferUtils.createByteBuffer(1);
+		ByteBuffer bb = ByteBuffer.allocateDirect(1);
 		Class<?> clazz = bb.getClass();
 		try {
 			freeMethod = clazz.getMethod("free");