Re: discoveries! gtk DOES dim... how can i infinite-loop?

[Gary Kline <kline thought org>]

On Thu, Jan 19, 2012 at 11:18:22AM +0100, David Ne??as wrote:
> Date: Thu, 19 Jan 2012 11:18:22 +0100
> From: David Ne??as <yeti physics muni cz>
> Subject: Re: discoveries! gtk DOES dim... how can i infinite-loop?
> To: Gary Kline <kline thought org>
> Cc: GTK Devel List <gtk-app-devel-list gnome org>
>
> On Thu, Jan 19, 2012 at 12:58:09AM -0800, Gary Kline wrote:
> > i've spent the last many days tryoing [on ubuntu] anf tonight on my
> > EEE-900A netbook [debian].  both dim when i go into a recursive
> > loop.
> >
> > 1.  edit with gvim
> > 2.  have espeak voice gvim when it is written
> > 3 goto 1;
> >
> > tonight i did everything absolutedly write in chercking various
> > things, but the app still dimd if i have the function call itselg.
> >
> > i should have asked this list whether there there is  a gtk call
> > that let's things go into  either  an infinite loop, or, would a
> > for() loop work for 300-500 loops?
> >
> > if not, i need to rethink my algorithm.
>
> That is probably what you have to do.
>
> If I understand what your code does (and how) then while gvim is running
> your app is *not*.  Your app is blocked and waits until gvim terminates.
> The same for espeak.


        i think you have it nailed!  [g]vim creates a .SWAP file in
        the pwd; so since gvim creates .talk.N.txt.swp while the
        textfile is being types into, i do a while(!done) check on
        the .swap file.  then i do a second while loop while 
        talk.N.txt exists.  finally, espeak [flags] | aplay speaks
        the words in the text file.  [ i tee the output of espeak
        and hand it off to aplay because of strange driver bugs here
        on my desktop.]


> You need to use a function such as g_spawn_async() to execute it.  Then
> it depends how you communicate with the programs.  If you just want to
> know when it terminates use waitpid().

        thanks much.  i'll check g_spawn_async() to see how it is
        used.  i hadn't thought of any of the flavors of wait;
        everything has worked: gvim//write-quit/espeak a dozen
        times.
        but the gtk app is greyed and the quit button doesn't work!

        gary

> Yeti

-- 
 Gary Kline  kline thought org  http://www.thought.org  Public Service Unix
           Journey Toward the Dawn, E-Book: http://www.thought.org
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             Twenty-five years of service to the Unix community.