sigactdemo2.c

#include <stdio.h>

#include <signal.h>

main()

{

int i = 5;

struct sigaction newhandler;

sigset_t sigs, prevsigs;

void inthandler();

newhandler.sa_handler = inthandler;

newhandler.sa_flags = SA_RESETHAND | SA_RESTART;

sigemptyset(&sigs);

sigaddset(&sigs, SIGINT);

sigprocmask(SIG_BLOCK, &sigs, &prevsigs);

newhandler.sa_mask = sigs;

if(sigaction(SIGINT, &newhandler, NULL) == -1)

perror("sigaction");

while (i--)

sleep(1);

sigprocmask(SIG_SETMASK, &prevsigs, NULL);

}

void inthandler(int s)

{

printf("\n");

sleep(s);

printf("\n");

}