AW: Gtk+ and multithreating

[chabayo <chabayo yahoo de>]

Hi list,...

...im sorry if i missunderstand something...

Am 14.05.2007 19:53:44 schrieb(en) Michelle Konzack:
> Hello *,
>
> I am new on this list, but have already codes some VERY simple admin
> GUI's...  Now I have a bigger problem/Application which need definitiv
> multithreading since it must poll several servers and update several
> TreeView and ListView.  I have no experience with it, since I am one
> of those
>
>    console-singel-task-no-one-bother-me
>
> programmers (Debian GNU/Linux)...  :-)
>
> OK, for now my GUI is running and then I use a loop like
>
> ----8<--------------------------------------------
>     window_main=create_window_main();
>
>     while ( TRUE )
>     {
>       while ( gtk_events_pending() )
>         gtk_main_iteration();
>
>       <some_code_to_update_the_dialog>
>     }
> ----8<--------------------------------------------

...could it be two threads try updating the same GUI-Structure !? -  
trying to resolve their reflections of their updates on the Object-Tree  
or something that way??

Maybe the simplest way is to code the main thread first, and (ok, here  
im in pain) then, following new threads, lock that functions changing  
something GUI-pending for thread-safety; i had already such a Prog, but  
cannot remember.

Was that something with g_mutex_lock !? Threre was a  
tutorial...anywhere.

> where <some_code_to_update_the_dialog> are several functions which are
> executed one after one.  Problem FOR NOW is that each function need
> ages to get the data and my GUI is dead while running the functions...
>
> If there is nothing to do, the CPU load is 100% while running the
> loop.
> Oops!
>
> Not realy what I want!
>
> So, can anyone provide me with a Tutorial HOW TO MULTITHREAD those
> functions <some_code_to_update_the_dialog> ?

Ok, im still here...hope i understand...u get in to the update  
function...and update some widgets!?? - or what...

...or it just takes to much time to calculate the data, and for that  
time your (main-)thread cannot update the gui.

Then it should work as i said...

-signal to update data starts 2nd thread
-main thread does normal gui response
-2nd thread got data
-2nd thread comes into situation to have to lock (thats that thing i  
have "had" a link for) some gui-data so main thread does not conflict  
with
or
-me is false and i am just to happy with talking to myself ;)

> And maybe some other tips...
>
> Thanks, Greetings and nice Day
>     Michelle Konzack
>     Systemadministrator
>     Tamay Dogan Network
>     Debian GNU/Linux Consultant
>
>
> --
> Linux-User #280138 with the Linux Counter, http://counter.li.org/
> ##################### Debian GNU/Linux Consultant
> #####################
> Michelle Konzack   Apt. 917                  ICQ #328449886
>                    50, rue de Soultz         MSN LinuxMichi
> 0033/6/61925193    67100 Strasbourg/France   IRC #Debian (irc.icq.com)

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