server_bonus.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   server_bonus.c                                     :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: jilai <jilai@student.42.fr>                +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/04/28 15:11:55 by jilai             #+#    #+#             */
/*   Updated: 2024/04/28 15:11:57 by jilai            ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "server_bonus.h"

void	handle_signal(int sig, siginfo_t *i, void *context)
{
	static unsigned char	bit[2];

	(void)i;
	(void)context;
	if (!bit[1])
		bit[1] = '0';
	bit[0] |= (sig == SIGUSR1);
	bit[1]++;
	if (bit[1] == '8')
	{
		ft_printf("%c", bit[0]);
		bit[1] = '0';
		if (bit[0] == '\0')
			kill(i->si_pid, SIGUSR1);
		bit[0] = 0;
	}
	else
		bit[0] <<= 1;
}

int	main(void)
{
	struct sigaction	s;

	ft_printf("Server PID : %i\n", getpid());
	s.sa_sigaction = handle_signal;
	s.sa_flags = SA_SIGINFO;
	sigaction(SIGUSR1, &s, NULL);
	sigaction(SIGUSR2, &s, NULL);
	while (1)
		pause();
	return (0);
}