RFR 9: 7021006: (process) Remove disabled clone-exec feature

[Roger Riggs]

Thanks Martin,

Updated the webrev in place to restore that context.

Roger


On 3/27/2015 5:00 PM, Martin Buchholz wrote:
> clone was never used in a released jdk.
>
> I would leave the internal docs.  I left them in on purpose, because 
> it was not at all obvious why we chose not to use clone.
>
> I'm especially fond of
> - *   On Linux, one might think that vfork() would be implemented using
> - *   the clone system call with flag CLONE_VFORK, but in fact vfork is
> - *   a separate system call (which is a good sign, suggesting that
> - *   vfork will continue to be supported at least on Linux).
> Deleting the implementation using clone is a better idea; it's easy to 
> resurrect in the unlikely case someone will want to.
>
>
> On Fri, Mar 27, 2015 at 1:50 PM, Roger Riggs <Roger.Riggs at oracle.com 
> <mailto:Roger.Riggs at oracle.com>> wrote:
>
>     At one time clone() was used on Unix to spawn processes but no more.
>     Please review the cleanup of now dead code.
>
>     Webrev:
>     http://cr.openjdk.java.net/~rriggs//webrev-clone-7021006
>     <http://cr.openjdk.java.net/%7Erriggs//webrev-clone-7021006>
>
>     Issue:
>     https://bugs.openjdk.java.net/browse/JDK-7021006
>
>     Thanks, Roger
>
>