JDK Bug# 8079620 (Watch Service Deadlock on OSX)

[Christopher Brown]

Hi Brian,

I've never really had time to get into the native side of different
platforms, so I'm focused more on the Java side.  I've raised this subject
on a previous thread in this list:
http://mail.openjdk.java.net/pipermail/nio-dev/2014-August/002691.html

There are a few messages in the thread over a relatively long period, and
some pointers to using KQueue.  I've unfortunately not had the time to
explore adapting the different ideas into a full "NIO file provider", and
don't have enough experience on the C-side of things to implement a robust
and efficient solution.

I've previously used JXFileWatcher, which was a good (but non-standard)
solution.  I've more or less given up on that as I kept encountering issues
when the native libraries used by it changed (more specifically, the way it
invoked them) and I've had issues with event ordering that I gave up trying
to get fixed, as well as some high-load saturation issues where it just
stopped delivering events.

Hope that helps, it's been a long time since JDK7 introduced this and it'd
be a real let-down if was postponed after JDK9.

Thanks,
Christopher


On 8 August 2015 at 01:20, Brian Burkhalter <brian.burkhalter at oracle.com>
wrote:

> Hi Christopher,
>
> I am not really in a position to respond to the question at this time.
>
> Do you have a pointer to the Mac OS X developer documentation on the
> specific native notifications you have in mind?
>
> Thanks,
>
> Brian
>
> On Aug 7, 2015, at 4:45 AM, Christopher Brown <
> christopherbrown06 at gmail.com> wrote:
>
> Is there any news concerning a native implementation of the WatchService
> (using native notifications instead of polling) for Mac OS X ?  For
> example, is it planned for JDK9 ?
>
>
>
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