Re: [LIP] [Update] Sending TERM, and signal handler issue.

On Wed, 20 Oct 2004, Amarendra Godbole wrote:

> Hi,
>
> void term_handle(int signo) {
>        printf("Okay, caught %d.\n", signo);
>        printf("Going to sleep.\n", signo);
>        sleep(15);
> }
> ----<cut here>----

> This is _exactly_ what happens in my case too. From a shell script, a
> kill -TERM is being sent to it, which returns with a status of 0. Then
> in a loop, its pid is being grepped for - and if present, another kill
> is posted to it. My signal handler requires some 8 seconds, before it
> returns.
>
> Is there a better way of doing this, so that it does not go into this
> infinite loop ? Yes, altering the shell script is one possibility -
> but I wanted to know if there is a better way to do this using
> signal() (or sigaction())Thanks in advance.

You might want to disable the TERM signal when you enter the 
term_handler().

Try adding the following to term_handler():

sigset_t sig;

sigemptyset(&sig);
sigaddset(&sig, SIGTERM);
sigprocmask(SIG_BLOCK, &sig, NULL);

Regards,
Amit

-- 
I'm an angel!!! Honest!
The horns are just there to hold the halo up straight.
-----------------------------------------------------
Amit Kucheria             | amitk@ NOSPAM ittc.ku.edu
Wireless Systems Engineer | 760-822-8529
Metric Systems Corp.      | Vista, CA 92083
-----------------------------------------------------


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