Add Ringbuffer interface an 2 implementations, synchronized (locking) SyncedRingbuffer and lock-free LFRingbuffer.

SyncedRingbuffer is moved from JOGL to GlueGen, and generalized w/ common interface Ringbuffer
to allow testing diff. implementations.

- Added Ringbuffer.AllocEmptyArray factory interface, allowing to pass a constructor
  to construct the generic array.

- Added functionality is growBuffer(..), allowing to either grow a full or empty buffer,
  using Ringbuffer.AllocEmptyArray.

- Removed explicit 'clearRef' at get*(..), always clear the taken reference for better
  interface generalization.

- Added LFRingbuffer, exposing lock-free get*(..) and put*(..) methods
  using the 'Always Keep One Slot Open' pattern using the read/write index as barriers only.

- Ctor's copy an optional passed user array into the internal array,
  utilizing Ringbuffer.AllocEmptyArray.

- Added unit tests.

1 files changed, 52 insertions, 0 deletions

diff --git a/src/junit/com/jogamp/common/util/TestLFRingBuffer01.java b/src/junit/com/jogamp/common/util/TestLFRingBuffer01.java
new file mode 100644
index 0000000..52e433d
--- /dev/null
+++ b/src/junit/com/jogamp/common/util/TestLFRingBuffer01.java
@@ -0,0 +1,52 @@
+/**
+ * Copyright 2013 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ * 
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ * 
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+ 
+package com.jogamp.common.util;
+
+import com.jogamp.common.util.LFRingbuffer;
+import com.jogamp.common.util.Ringbuffer;
+
+public class TestLFRingBuffer01 extends RingBuffer01Base {
+    static final Ringbuffer.AllocEmptyArray<Integer> allocEmptyIntArray = new Ringbuffer.AllocEmptyArray<Integer>() {
+            @Override
+            public Integer[] newArray(int size) {
+                return new Integer[size];
+            } };
+            
+    public Ringbuffer<Integer> createEmpty(int initialCapacity) {
+        return new LFRingbuffer<Integer>(initialCapacity, allocEmptyIntArray);
+    }
+    public Ringbuffer<Integer> createFull(Integer[] source) {
+        return new LFRingbuffer<Integer>(source, allocEmptyIntArray);
+    }
+    
+    public static void main(String args[]) {
+        org.junit.runner.JUnitCore.main(TestLFRingBuffer01.class.getName());
+    }
+
+}