source: trunk/minix/test/select/test12.c@ 22

/*
 * Test name: test12.c
 *
 * Objective: The purpose of this check the behaviour when a signal is received
 * and there is a handler.
 * 
 * Description: The program handles SIGHUP and expects the user to actually send
 * the signal from other terminal with 'kill -1 pid' 

 * Jose M. Gomez
 */

#include <sys/types.h>
#include <sys/select.h>
#include <unistd.h>
#include <time.h>
#include <stdio.h>
#include <signal.h>
#include <errno.h>

#define SECONDS 15

void catch_hup(int sig_num)
{
        /* don't need to reset signal handler */
        printf("Received a SIGHUP, inside the handler now\n");
}

int main(void) {
        int ret;                /* return value */

        /* set the HUP sginal handler to 'catch_hup' */
        signal(SIGHUP, catch_hup);
        /* Get proc_id and print it */
        printf("Send a signal from other terminal with: kill -1 %d\n", getpid()); 
        printf("Blocking now on select...\n", SECONDS);
        ret = select(0, NULL, NULL, NULL, NULL); 
        printf("Errno: %d\n", errno);
}