8242477: (bf) MappedByteBuffer should clarify copying between overlapping mappings

[Paul Sandoz]

+1

Paul.

> On Apr 9, 2020, at 3:26 PM, Brian Burkhalter <brian.burkhalter at oracle.com> wrote:
> 
> To fix [1] this additional verbiage is proposed for the class specification of MappedByteBuffer:
> 
> @@ -58,6 +58,9 @@
>   * avoid the manipulation of a mapped file by this program, or by a
>   * concurrently running program, except to read or write the file's content.
>   *
> + * <p> The result of a bulk copy between two {@code MappedByteBuffer}s is
> + * unspecified if they are mapped from overlapping regions of the same file.
> + *
>   * <p> Mapped byte buffers otherwise behave no differently than ordinary direct
>   * byte buffers. </p>
> 
> Please refer also to [2].
> 
> Thanks,
> 
> Brian
> 
> [1] https://bugs.openjdk.java.net/browse/JDK-8242477 <https://bugs.openjdk.java.net/browse/JDK-8242477>
> [2] https://bugs.openjdk.java.net/browse/JDK-8242253 <https://bugs.openjdk.java.net/browse/JDK-8242253>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mail.openjdk.java.net/pipermail/nio-dev/attachments/20200409/b7a32ca6/attachment.htm>