[Qt-interest] bash jobcontrol breaks QT4 and inotify ?

[Andreas Pakulat]

> I'm still puzzled by this program going hay-wire after a 'Ctrl+Z;fg'
> I found out the following extra info. I monitored the program with htop
> so that I could se the threads and when I launch the program I get
> 7577 david      20 0 249M 21456 1584 S 0.0 0.4 0:00.10 ./inotify_demo
> 7578 david      20 0 249M 21456 1584 S 0.0 0.4 0:00.00 ./inotify_demo
> 7579 david      20 0 249M 21456 1584 S 0.0 0.4 0:00.00 ./inotify_demo
> 
> which should be the main process and two threads

No, these are 3 separate instances of the same app. You cannot see the
threads inside the process using htop.

> If I press CTRL-Z
> the stae of all 3 goes from S(leeping) to T(Traced/stopped)
> 
> However after giving the fg command
> 7577 david      20 0 249M 21456 1584 S 0.0 0.4 0:00.18 ./inotify_demo
> 7578 david      20 0 249M 21456 1584 S 0.0 0.4 0:00.00 ./inotify_demo
> 
> It seems that the last thread has vanished!

This has nothing to do with your problem. Your problem is that the
while-loop in the threads run method exits once the app resumes. Now I
don't have the slightest clue why this happens or how inotify is supposed
to be used. However this has nothing to do with Qt, so maybe ask in a
Linux-Kernel-related forum why reading from the filedescriptor breaks after
suspending the app.

Andreas

-- 
Your present plans will be successful.