Unable to start process using Runtime - Solved

[Martin Buchholz]

Hi Michael,

I am the author of the changes to UNIXProcess_md.c.
File descriptor 3 is used to communicate any cause of failure
back to the parent process.

One might think that the openjdk7 code would work on
BSD because if the standard way of opening /proc/self/fd,
it falls back to closing all descriptors up to sysconf(_SC_OPEN_MAX),
which one would think the BSDs would have implemented.

In any case, even if the current jdk7 code doesn't work on BSD,
it should be easy to create a small patch to it that would be
portable to more Unix systems, that could be accepted upstream.
I would be willing to review.

Martin

On Fri, Oct 24, 2008 at 22:15, Michael Franz <mvfranz at gmail.com> wrote:
> Hi,
>
> I have been trying to using OpenJDK BSD to run Eclipse and Netbeans.  I have
> been successful in both, but it was not very useful as I there was no way to
> actually run my code from within the IDEs.  There is an issue with OpenJDK
> for BSD being unable to start a process.  After many compiles and narrowing
> the problem down to the closeDescriptors I was able to find this posting
> that explains why it doesn't work and some history to it.  Most importantly,
> it also has the fix.
>
> http://www.mavetju.org/mail/view_message.php?list=freebsd-java&id=2564148
>
> Applying the patch allows OpenJDK to spawn processes on OS X.  Hopefully it
> will work for all of the BSDs.
>
> Michael
>
>
>
>