Re: dump core while running

[Ignatios Souvatzis <ignatios%cs.uni-bonn.de@localhost>]

Hi,

On Tue, Mar 03, 2009 at 05:14:33PM +0200, Brad du Plessis wrote:

> Is there a way from within a userland app to get it to core dump and 
> keep running?
sort of, see below.

> I'd like to see a full back trace with symbols etc. when a 
> certain error (which is handled) happens within my code but I'd like the 
> app to continue running. Searched a bit and couldn't find anything that 
> dumps the core without killing the app too.

I believe this is good enough:

#include <unistd.h>
#include <signal.h>

if (condition) {

        pid_t pid;

        pid = fork(); /* or vfork(), which might be faster - less MMU load */
        if (pid == 0) {
                kill(getpid(), 9);
                /* NOTREACHED */
        }
        
}

Regards,
        -is