Signal Handler

Overview

This project demonstrates how to handle UNIX signals in C using sigaction.
It specifically intercepts SIGINT and SIGUSR1 and prints messages when these signals are received.

Features

Intercepts SIGINT (usually generated with Ctrl + C) and SIGUSR1`.
Prints a custom message for each signal.
Tracks the number of SIGINT signals received and terminates after a defined count.
Demonstrates proper use of:
- sigaction() instead of signal() for consistent behavior.
- volatile sig_atomic_t for safe signal state handling.

Build

make

Run

./signal_handler

Test

Open another terminal and run:

kill -USR1 <PID>

where <PID> is the process ID of signal_handler.

Press Ctrl + C in the terminal running the program to send SIGINT.

Clean

make clean