/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   init.c                                             :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: lfirmin <lfirmin@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/11/22 14:20:46 by lfirmin           #+#    #+#             */
/*   Updated: 2025/03/17 04:12:57 by lfirmin          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
#include "../include/philo.h"

int	init_forks(t_data *data)
{
	int	i;

	i = 0;
	while (i < data->nb_philo)
	{
		if (pthread_mutex_init(&data->forks[i], NULL))
			return (1);
		i++;
	}
	return (0);
}

int	init_philos(t_data *data)
{
	int	i;

	i = 0;
	while (i < data->nb_philo)
	{
		data->philos[i].id = i + 1;
		data->philos[i].l_fork = i;
		data->philos[i].r_fork = (i + 1) % data->nb_philo;
		data->philos[i].last_meal = data->start_time;
		data->philos[i].m_eaten = 0;
		data->philos[i].data = data;
		if (pthread_mutex_init(&data->philos[i].meal_lock, NULL))
			return (1);
		i++;
	}
	return (0);
}

int	init_all(t_data *data)
{
	int	i;

	i = -1;
	if (init_philo_forks(data))
		return (printf("Error : Failed to allocate memory\n"), 1);
	if (init_forks(data))
	{
		free(data->philos);
		free(data->forks);
		return (printf("Error : Failed to initialize forks mutex\n"), 1);
	}
	if (init_philos(data))
	{
		while (++i < data->nb_philo)
			pthread_mutex_destroy(&data->forks[i]);
		free(data->philos);
		free(data->forks);
		return (printf("Error : Failed to initialize philosophers\n"), 1);
	}
	return (0);
}

int	init_philo_forks(t_data *data)
{
	data->philos = malloc(sizeof(t_philo) * data->nb_philo);
	if (!data->philos)
		return (1);
	data->forks = malloc(sizeof(pthread_mutex_t) * data->nb_philo);
	if (!data->forks)
		return (free(data->philos), 1);
	return (0);
}