Re: SIGINT with gtk_main

[Chris Vine <chris cvine freeserve co uk>]

On Wednesday 21 March 2007 17:50, Michiel Jan Laurens de Hoon wrote:
> For my application, I need to run gtk_main but I want to quit gtk_main
> when either input is available on stdin or the user presses Ctrl-C. The
> former is easy (using g_io_add_watch), but I am not sure what the best
> approach is to handle Ctrl-C. Right now I am using g_timeout_add to
> check every 100 milliseconds if Ctrl-C has been hit. But I'm wondering
> if there is a better way to do this, preferably without checking
> periodically for a Ctrl-C.
>
> The relevant code looks as follows:

[snip]

You can write to a pipe in the signal handler (assuming you are using Unix as 
your question implies), as write() is async-signal-safe - but set the pipe 
non-blocking as in the unlikely event of it filling up and blocking on write 
you will deadlock the program.  You can watch on the pipe in the main loop 
using GIOChannel.

Chris