Providing/passing argument to signal handler

Question

Can I provide/pass any arguments to signal handler?

/* Signal handling */
struct sigaction act;
act.sa_handler = signal_handler;
/* some more settings */


        

Answer 1

Absolutely. You can pass integers and pointers to signal handlers by using sigqueue() instead of the usual kill().

http://man7.org/linux/man-pages/man2/sigqueue.2.html