philosophers/philo_bonus/src/init.c

/* ************************************************************************** */
/*                                                                            */
/*                                                    .--.  _                 */
/*   init.c                                          |o_o || |                */
/*                                                   |:_/ || |_ _   ___  __   */
/*   By: houtworm <codam@houtworm.net>              //   \ \ __| | | \ \/ /   */
/*                                                 (|     | )|_| |_| |>  <    */
/*   Created: 2023/03/15 02:00:19 by houtworm     /'\_   _/`\__|\__,_/_/\_\   */
/*   Updated: 2023/05/24 02:14:22 by djonker      \___)=(___/                 */
/*                                                                            */
/* ************************************************************************** */

#include "../philo.h"

int	ft_charactercheck(int argc, char **argv)
{
	int	i;
	int	j;

	i = 1;
	j = 0;
	while (i < argc)
	{
		while (argv[i][j] != '\0')
		{
			if (argv[i][j] < '0' || argv[i][j] > '9')
				return (1);
			j++;
		}
		i++;
		j = 0;
	}
	return (0);
}

t_strct	*ft_parseandvalidateinput(int argc, char **argv)
{
	t_strct	*strct;

	strct = malloc(sizeof(t_strct));
	strct->error = NULL;
	if (ft_charactercheck(argc, argv))
		strct->error = "input can only be numbers";
	strct->philos = philo_atoi(argv[1]);
	if (strct->philos < 1 || strct->philos > 500)
		strct->error = "Min 1 and Max 500 philosophers";
	strct->dietime = philo_atoi(argv[2]);
	if (strct->dietime < 50)
		strct->error = "die time must be a minimum of 50ms";
	strct->eattime = philo_atoi(argv[3]);
	if (strct->eattime < 50)
		strct->error = "eat time must be a minimum of 50ms";
	strct->sleeptime = philo_atoi(argv[4]);
	if (strct->sleeptime < 50)
		strct->error = "sleeptime must be a minimum of 50ms";
	if (argc == 6)
		strct->target = philo_atoi(argv[5]);
	else
		strct->target = 1000000000;
	if (strct->target < 0)
		strct->error = "We can't do negative cycles";
	return (strct);
}

int	ft_restoresemaphore(t_strct *strct)
{
	sem_close(strct->dead);
	sem_close(strct->done);
	sem_close(strct->hold);
	sem_close(strct->forks);
	sem_close(strct->print);
	sem_unlink("dead");
	sem_unlink("done");
	sem_unlink("hold");
	sem_unlink("forks");
	sem_unlink("print");
	strct->dead = sem_open("dead", O_CREAT | O_EXCL, 0666, 0);
	strct->done = sem_open("done", O_CREAT | O_EXCL, 0666, 0);
	strct->hold = sem_open("hold", O_CREAT | O_EXCL, 0666, 0);
	strct->print = sem_open("print", O_CREAT | O_EXCL, 0666, 1);
	strct->forks = sem_open("forks", O_CREAT | O_EXCL, 0666, strct->philos);
	return (0);
}

int	ft_initstructandmutex(t_strct *strct, int i)
{
	ft_restoresemaphore(strct);
	strct->alive = 1;
	while (i <= strct->philos)
	{
		strct->philo[i].id = i + 1;
		strct->philo[i].cycles = 0;
		strct->philo[i].dietime = &strct->dietime;
		strct->philo[i].eattime = &strct->eattime;
		strct->philo[i].sleeptime = &strct->sleeptime;
		strct->philo[i].strtt = &strct->strtt;
		strct->philo[i].philos = &strct->philos;
		strct->philo[i].target = &strct->target;
		strct->philo[i].alive = &strct->alive;
		strct->philo[i].forks = strct->forks;
		strct->philo[i].done = strct->done;
		strct->philo[i].dead = strct->dead;
		strct->philo[i].hold = strct->hold;
		strct->philo[i].print = strct->print;
		strct->philo[i].pid = strct->pid;
		i++;
	}
	return (0);
}

void	ft_safeprint(t_philo *ps, char *str)
{
	sem_wait(ps->print);
	if (*ps->alive)
		printf("%lld %d %s\n", ft_time() - *ps->strtt, ps->id, str);
	sem_post(ps->print);
}