Swap should be better done native?

[Martin Buchholz]

After looking a bit at the buffer implementation,
it seems like direct buffers optimize multibyte
operations like putInt using Unsafe.

Is this true?

If so, why can't non-direct buffers (HeapByteBuffers)
do that as well, by using the object-based versions
of Unsafe operations?

If we could make such an optimization for non-direct
buffers, it would be a huge performance gain for some
uses.

Martin