Puppy Linux Discussion Forum

DaveS · Joined: 09 Oct 2008 Posts: 3697 Location: UK

I keep reading about these applications needing to be shut down 'properly' to prevent them from running in the background. From Pmusic experience, I guess this means that just closing the window is not enough, and the 'quit' or whatever command must be used to kill the process? If one just closes the window, does this mean that when activating the program again, a second instance is initiated, or does the original which is running in the background, reappear?

BarryK · Posted: Tue 21 Apr 2009, 08:26 Post subject:

Well, zigbert can answer this better than me. I know there are issues with processes left running and that annoys me when I want to unmount a partition. I don't know if it affects anything when you want to rerun the application.

It may be that those apps need to have the user interface redesigned to remove this problem. I think it is because of the pulldown menus.

Or, it may be possible to create a workaround to fix it. There can be a wrapper for the actual application. When the app is killed, execution returns to the wrapper which then makes sure all processes are killed before exiting. Well, that is more than possible, its doable.

zigbert · Joined: 29 Mar 2006 Posts: 5295 Location: Valåmoen, Norway

zigbert · Joined: 29 Mar 2006 Posts: 5295 Location: Valåmoen, Norway

I have made a simple workaround that kills pid after closing gtkdialog-script (including drop-down menu). This example is Pburn. I have edited the startup-script in /usr/bin/. Since I'm not really a programmer, I would like someone with more knowledge to look through the codelines. There could be many other ways to do this, that are much better. - I don't know, just happy it works.

I will include this (or another) workaround in the next release of
Pburn
Pmusic
Pfind
Pbackup
Pwidgets
Hopefully other Pscripts with same issue could use this.
Pdvdrsab
Pcdripper
Pmetatagger
Psip
Pctorrent
Wallpaper

trio · Posted: Wed 22 Apr 2009, 05:56 Post subject:

Ziggy,

This is how I do it (in the wallpaper express - preview function)

TMP=`ps | grep 'Pburn' | awk '{print $1}'`

kill $TMP

Taken from your pprocess' script Laughing

, I don't know if it can be applied in this case or not

aragon · Joined: 15 Oct 2007 Posts: 1691 Location: Germany

Don't know if this is related/helps but you maybe want to have a look at

zigbert · Joined: 29 Mar 2006 Posts: 5295 Location: Valåmoen, Norway

aragon
Prename does not have the same issue, because it has no menus. the Prename script gets the control back after child process is done. - That's why I have started a loop instead of waiting for child-process to return to parent.

trio
The main issue is not the killing, but to scan X to see if pburn-window is actually up. Your (mine Very Happy

) code is simpler, but I had some trouble in the past killing ALL child processes. That was with Pfind, - and I still have the same problems, so your code might fit better in the end. I guess my 2 'for-loops' takes much more time than your grep.

Thanks for input !!!!!
Sigmund

aragon · Joined: 15 Oct 2007 Posts: 1691 Location: Germany

ok, starting to understand the problem a litlle bit... Wink

aragon

ecomoney · Posted: Wed 22 Apr 2009, 20:42 Post subject:

Hi, I just want to mention that the P series apps have brought a lot of useability to puppy linux, from what I have seen of the end users I have using 4 series puppy. Zig, you definetely qualify as a "programmer" in my book.

I hope someone with a bit more in-depth knowledge helps you sort these problems out, and lets you get back to designing great front ends!

trio · Posted: Thu 23 Apr 2009, 06:17 Post subject:

Hi,

just wanna share a workaround, will kill all gtkdialog at start up, or supposed to Laughing

just try

ecomoney · Posted: Tue 28 Apr 2009, 03:14 Post subject:

This problem has been fixed by Zigbert in 0.8 which he just released. It needs testing though (like anything with a zero on the end).

Get it from here.

http://www.murga-linux.com/puppy/viewtopic.php?t=31206