I've ticketed timeout on unload at
https://code.ros.org/trac/ros-pkg/ticket/4557

Tully

On Tue, Nov 9, 2010 at 4:04 PM, Daniel Stonier <d.stonier@gmail.com> wrote:

> Good point - I hadn't run into a usage scenario where I needed it so
> was curious about that.
>
> Adding a timeout/abort to the client.waitForExistence() call in
> NodeletInterface::unloadNodelet is a better option?
>
> Regards,
> Daniel.
>
> On 10 November 2010 08:32, Josh Faust <jfaust@willowgarage.com> wrote:
> >>
> >> You'll notice I commented out the
> >>
> >> //ni.unloadNodelet (name, manager);
> >
> > This is actually not correct.  There are times when you want to keep the
> > manager up but kill a different launch file that loaded nodelets into
> that
> > manager.  This prevents them from unloading.
> > Really the unloadNodelet call needs a timeout.
> > Josh
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> >
>
>
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-- 
Tully Foote
Systems Engineer
Willow Garage, Inc.
tfoote@willowgarage.com
(650) 475-2827