Re: [Gnuplot-py-users] clean exit

William Baxter wrote:

>When I try to quit from my python programs that called gnuplot.py, they
>complain "The program is still running; do you wish to kill it?" 
>
>Even if I click "ok" they still won't go away. 
>
>How do I clean up the gnuplot processes that I've started in python?
>

What operating system?

It should be that when the Gnuplot.Gnuplot object is destroyed, then its 
self.gnuplot object should run out of reference counts and be destroyed. 
 That object is a GnuplotProcess object which holds a popen file object. 
 When the GnuplotProcess object is destroyed, the popen file object 
should be closed and destroyed, which should end the gnuplot process.

At least that's the theory, and I've never had any trouble with it under 
Linux.  It could be that the close-on-delete behavior of popen is not 
the same on your platform, or it could be that you are somehow holding a 
reference to the Gnuplot.Gnuplot object when your program ends (maybe 
via a circular reference?)  Anyway, I should probably add a close() 
method to the Gnuplot.Gnuplot object to insist that the process is ended 
NOW (this will also be required if I ever get around to finishing off 
Jython support for Gnuplot.py).

Yours,
Michael

-- 
Michael Haggerty
mh...@al...