Re: SIGTERM

[Bubulac Tatiana <bubulac@unidec.ro>]

That's right.

In the parent process I have the  line no 6 where it blocks.

...
1     signal (SIGTERM, die);
2     signal (SIGALRM, dummy);
...
3    for (min = 0; min < 15 && not_done; min++)
4    {
5         alarm ((unsigned int) 60); /* wait for 1 minute */
6         pid = wait (&status);    /* Wait for a process to end */
7         alarm ((unsigned int) 0); /* Reset alarm */
....
8    }

The problem is that the child process did not catch the signal. I put a
printf in the child signal handler
function.
If I give the "kill child_pid" also nothing happens. Of course if I give
"kill -9 child_pid" the child is killed
and the parent will display "Normal termination".


Glynn Clements wrote:

> Bubulac Tatiana wrote:
>
> >     I want to terminate a parent process that attach several shared
> > memory segments
> > with kill(pid, SIGTERM) but it fails to terminate.
> >     Even if I give the command from command line it fails to terminate.
> >     If I give kill -9 pid it terminates but the shred memory segments
> > remains.
> >     Why I cannot terminate it with  SIGTERM signal?
>
> Presumably the receiver has either blocked, ignored or caught SIGTERM.
>
> >     "....
> >     status = kill ((pid_t)pid, SIGTERM);
> >      printf("status = %d\n", status);
> >     ...."
> > The status is 0. The pid is correct.
>
> That only tells you that the signal was sent. It doesn't tell you what
> the receiving process did as a result; the receiving process may not
> have even received the signal by the time that kill() returns.
>
> --
> Glynn Clements <glynn.clements@virgin.net>