[maemo-developers] [maemo-developers] How to keep app running indefinitely

[From: Steven Hill]

On Mon, 2006-06-03 at 01:46 +0100, Simon Budig wrote:
> Steven Hill (steveh at shscientific.com) wrote:
> > I have written an application for the Nokia 770 that I want to keep
> > running indefinitely - i.e. I want to stop the automatic process that
> > runs in the background and stops applications when there is nothing
> > going on for a long time, or to conserve power - can anyone tell me how
> > to go about doing this? 
> 
> Have a look at
>  http://www.maemo.org/platform/docs/api/libosso/html/group__Devstate.html#ga2
> 
> Issue osso_display_blanking_pause() in regular intervals to prevent the
> system from shutting down.
> 
> Hope this helps,
>         Simon

I tried this method, and it did not work.  If the internet connection is
dropped due to inactivity, the app also stops.  In addition, I do not
want the screen to stay bright because of potential burn-in - I am
writing an application that will stay running 24/7, and I want it to
keep running whether or not there is user input and whether or not it is
connected.  I came up with a workaround that pings a socket every 30
seconds - that keeps the app running with screen dimming and blanking
still functional.  But what do I do if my socket crashes or I lose my
internet connection due to a wireless router malfunction or whatever??
There must be a method that will intercept the system call to shut the
app off and ignore it, but I have not found such a thing discussed in
the maemo docs.

Can anyone enlighten me on this problem?