Evaluate alternatives to Arraylist for the OffHeapMemoryBuffer Pointers list

We should evaluate alternatives to Arraylist for the OffHeapMemoryBuffer Pointers list - for efficiency and concurrency (ArrayList could raise some issue in that field ifsynchronization is not well handled). A nice alternative could be http://code.google.com/p/vanilla-java/wiki/HugeCollections - it handles huge collections of homogeneus objects using off-heap memory (a good fit for the Pointers list)