Unix IPC: Working with Signals
25 Nov 2012Incoming messages to your process can come in the form of a signal. Signals are standard message packets that the operating system will use to tell your process something about the environment.
This snippet will show you show to setup a signal handler in your program.
/** The signal handler */
void sigint_handler(int sig) {
/* do something interesting with the sigint here */
}
int main(void) {
struct sigaction sa;
/* fill out the signal structure */
sa.sa_handler = sigint_handler;
sa.sa_flags = 0;
sigemptyset(&sa.sa_mask);
/* assign it to the appropriate signal */
sigaction(SIGINT, &sa, NULL);
/* do other stuff here, sigint will be handled */
}