Hi Tsuyoshi, On Fri, May 30, 2014 at 2:28 AM, tsuyoshi okita <825...@gmail.com> wrote:
> I commented wait_all_children like you said and tried, and the spinner
> does not stop.
> The script "gtk3_spinner_fork2.pl" has wait_all_children as well. I just
> commented and tested, and the spinner does not stop. it just keeps spinning.
>
You're stopping the spinner in the on_finish hook, which is NOT executed
anymore, now that you don't wait for your children to finish.
I followed a sample code from Parallel::ForkManager CPAN site, and in it it
> has wait_all_children() stated even though it has run_on_finish() and
> run_on_start(). This is the reason why I left wait_all_children().
>
Tough luck, that's the way Parallel::ForkManager seems to work, you really
have to wait on your children in order to get some control "on finish".
> I removed email part and added sleep() instead. It gave me the same
> result.
>
# print statements
> $pid[0] = $pm->start;
> sleep 2;
> $pm->finish(1);
Where does that "sleep" line gets executed? In BOTH parent process and
child/process!
You'll be able to fix this quickly, of course.
That "wait_all_children" bit will hinder getting you anywhere though, as
you'll still block the GUI process waiting for children to finish. Get in
touch with some Parallel::ForkManager pundit, and if they offer you a
straight-through solution, please come back with a reply on this thread.
Thanks! :)
Given that your command of Parallel::ForkManager looks quite shallow, I'd
recommend taking some time to understanding the way that module works… and
realizing that you might on the wrong path, oops :(
Until then, here's a Sunday hack on your code that drops
Parallel::ForkManager dependency altogether, and even tries to make it work
in "frenzy" mode (i.e. activating "start" and "stop" like crazy): it fails
(on my desktop at least), as it randomly segfaults at some "stop". This
would be the "gtk3-spinner.pl" attachment.
Ok, I went overboard and baked a version – gtk3-spinners.pl – that shows a
spinner for each worker. It's terribly pointless, agreed, but still fun… at
least until getting hit with the same segfaults storm as the previous toy.
;-)
Hoping these bits helped your endeavor, have a nice Sunday! :)
~ab
gtk3-spinner.pl
Description: Binary data
gtk3-spinners.pl
Description: Binary data
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