8219014: (bf) Add absolute bulk put methods which accept a source Buffer

[Florian Weimer]

* Brian Burkhalter:

> Resuscitating the thread [1] concerning [2]. An updated version of the
> proposed patch is [3]. This differs from the previous version in that
> it permits the source and destination buffers to share the same
> backing storage. Hopefully I have implemented this correctly (it is
> assumed that System.arraycopy() [4] and Unsafe copying handle
> overlapping copies as documented for the new methods $Type$Buffer
> put​(int, $Type$Buffer, int, int) {}).

> [3] http://cr.openjdk.java.net/~bpb/8219014/webrev.01/

Hmm.  This part

+     * of both buffers are unchanged. If the source buffer and this buffer share
+     * the same backing storage and the source and destination ranges overlap,
+     * then the transfer is performed as if the elements at positions

still references “backing storage”?  Should it say “backing array”
instead?

I don't think you can make such a promise for direct buffers.

Thanks,
Florian