ProcessBuilder support for pipelines

[Roger Riggs]

Hi Martin,

Doing the plumbing for this is pretty minimal as you've noticed from the 
webrev.
No native code is modified and it extends the existing redirect logic.
I think this is pretty useful and cheap and will work across platforms.

I use emacs every day too but somehow it seems dated.

Roger


On 7/27/2015 8:48 PM, Martin Buchholz wrote:
> In the past, when I contemplated doing this, I generally thought that 
> there wasn't enough value in such a feature for the effort, given that 
> one can start a subprocess shell that supports pipelines.  Does this 
> feature pull its weight?
>
> You don't need this to re-implement emacs in java, which has always 
> been my litmus test.  The missing feature is pty support, that y'all 
> are less likely to add...
>
> On Mon, Jul 27, 2015 at 7:48 AM, Roger Riggs <Roger.Riggs at oracle.com 
> <mailto:Roger.Riggs at oracle.com>> wrote:
>
>     On most operating systems, creating pipelines of processes is
>     simple and direct.
>     That same function is missing from the Java Process support and
>     can be provided by
>     java.lang.ProcessBuilder by enabling the pipes created for stdout
>     to be
>     used for standard input when the processes are created.
>     Comments and feedback are appreciated on the prototype API and
>     implementation.
>
>     Javadoc:  java.lang.ProcessBuilder.startPipe:
>     http://cr.openjdk.java.net/~rriggs/pipedoc/java/lang/ProcessBuilder.html#startPipe-java.lang.ProcessBuilder...-
>     <http://cr.openjdk.java.net/%7Erriggs/pipedoc/java/lang/ProcessBuilder.html#startPipe-java.lang.ProcessBuilder...->
>
>     webrev prototype:
>     http://cr.openjdk.java.net/~rriggs//webrev-pipeline-8132394
>     <http://cr.openjdk.java.net/%7Erriggs//webrev-pipeline-8132394>
>
>     Thanks, Roger
>
>