[Eric] Subprocess: configure fork

[Detlev Offenbach]

Hello,

the behavior will be changed in eric 4.5 scheduled for beginning of the new 
year.

Regards,
Detlev


Am Sonntag, 16. Oktober 2011, 12:11:09 schrieb Jamie Riotto:
> Ok, here is a very simple test:
> 
> from multiprocessing import Process, Queue
> 
> def f(x):
>     q, i = x
>     q.put([i, i*i])
> 
> if __name__ == '__main__':
>     q = Queue()
>     for i in range(10):
>         p = Process(target=f, args=((q, i), ))
>         p.start()
>     for i in range(10):
>         print q.get()
>         p.join()
> 
> Here are the results of running on the two systems:
> 
> System1:
> Windows XP Professional V.2002-Service Pack 3
> Python 2.7.2
> Qt 4.7.1
> PyQt 4.8.3
> Eric4-4.4.16
> 
> 'Run Script' = Runs no popups (as expected)
> 'Debug Script / Fork w/o pausing UNCHECKED = Runs no popups (I would
> have expected the pop-up box here!)
> 'Debug Script / Fork w/o pausing CHECKED = Runs no popups (as expected)
> 
> 
> System2:
> Max OS X 10.6.7
> Python 2.7.1
> Qt 4.7.3
> PyQt 4.8.4
> Eric4-4.4.16
> 
> 'Run Script' = 10 'Select the fork branch to follow...' popups appear,
> then runs (I would have expected *no* pop-up box here!)
> 'Debug Script / Fork w/o pausing UNCHECKED =  10 'Select the fork
> branch to follow...' popups appear, then runs (as expected)
> 'Debug Script / Fork w/o pausing CHECKED = Runs no popups (as expected)
> 
> 
> So, the issue on the Mac seems to be only in the 'Run Script' case
> behaving like 'Debug / UNCHECKED' case.
> Interestingly, on Windows, I seem to have a different issue in that no
> popups occur under any of the three conditions.
> 
> Digging slightly deeper, I then set the 'Debug child process' on the
> windows machine with a breakpoint at the 'q.put([i,i*i])' line in the
> child
> process, and the test completed but it never triggered.
> 
> Running the same test on the Mac, triggered the breakpoint in the
> child process immediately.
> 
> Hope this helps. Let me know if I can supply any other info.
> Cheers - jamie
> 
> On Sat, Oct 15, 2011 at 9:00 AM, Detlev Offenbach
> 
> <detlev at die-offenbachs.de> wrote:
> > Hello,
> > 
> > please provide the test script. Maybe there is a glitch somewhere and I
> > can debug it with your help.
> > 
> > Regards,
> > Detlev
> > 
> > Am 15.10.2011 um 17:52 schrieb Jamie Riotto:
> >> Well, fwiw, I've seen the same thing. I have an app that forks off say
> >> 8 computational threads.
> >> It behaves perfectly under eric on windows, but when I ran it on a
> >> linux (Max) system, even though
> >> I checked the first box, the question popped up a total of 8 times.
> >> Now to be fair, that was
> >> on a Mac, which I know is not officially supported, so I never
> >> reported it as a bug. I can supply
> >> a small test using Process Pools that demonstrates the problem, but
> >> again, only on the Mac.
> >> Cheers - Jamie Riotto
> >> 
> >> On Fri, Oct 14, 2011 at 10:46 AM, Detlev Offenbach
> >> 
> >> <detlev at die-offenbachs.de> wrote:
> >>> Am Freitag, 14. Oktober 2011, 16:55:03 schrieb Leonardo Giordani:
> >>>> Hi all,
> >>>> 
> >>>> when running or debugging programs which execute a subprocess() or
> >>>> other system calls I keep being asked by Eric which to follow, if
> >>>> parent or child process.
> >>>> This happens each subprocess it runs into and since I'm working on
> >>>> a project with hundreds of them it quickly becomes not usable.
> >>>> 
> >>>> This happens when running unit tests, too.
> >>>> 
> >>>> Is it possible to configure Eric such that it goes through forking
> >>>> without asking?
> >>> 
> >>> The Start Debug dialog has two checkboxes for this. The first
> >>> enables
> >>> automatic forking and the second indicates to follow the child (if
> >>> checked).>>> 
> >>>> I'm using Eric 4.4.17 (r4101)
> >>>> 
> >>>> Thank you very much
> >>>> 
> >>>> Leonardo
> >>> 
> >>> Detlev
> >>> --
> >>> Detlev Offenbach
> >>> detlev at die-offenbachs.de
> >>> _______________________________________________
> >>> Eric mailing list
> >>> Eric at riverbankcomputing.com
> >>> http://www.riverbankcomputing.com/mailman/listinfo/eric
> >> 
> >> _______________________________________________
> >> Eric mailing list
> >> Eric at riverbankcomputing.com
> >> http://www.riverbankcomputing.com/mailman/listinfo/eric
> > 
> > Detlev Offenbach
> > detlev at die-offenbachs.de
> 
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-- 
Detlev Offenbach
detlev at die-offenbachs.de