Re: Can you get asleep and be awakened?

[Maurizio Colucci <seguso forever tin it>]

On Wednesday 24 December 2003 10:27 am, Stuart Gilbert wrote:
> I thought cron jobs were supposed to be used to achieve tasks at certain
> times, presuming the tasks you're talking about are external programs,
> not something within the program. This is the case here, yes?

I'm not sure...

Suppose the user schedules a file deletion to be executed at 10 pm. 

at 10 pm, my program must do this:

if the files are still there
    delete the files
    UPDATE THE INTERNAL DATABASE
    write an entry to the log window
else
    write error message to log window

How can I use cron for that?

Furthermore, I must have a "tasks" window where the user can cancel a 
scheduled task. So the app must know which tasks have been executed by cron 
and which haven't.

Currently I was thinking of adding another process (or thread) that sleeps 
until a timer rings. Maybe SDL has such timers. But doing a multiprocess 
application in prolog is something I'd like to avoid. So I was hoping GTK 
offered such a thing (awaken you at a precise time).

Thanks for the appreciation!

Maurizio