42_Philosopher/philo/time.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   time.c                                             :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: cchauvet <cchauvet@student.42angouleme.fr  +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/04/27 11:35:26 by cchauvet          #+#    #+#             */
/*   Updated: 2023/05/16 13:24:30 by cchauvet         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include <bits/types/struct_timeval.h>
#include <sys/time.h>
#include <stddef.h>
#include <pthread.h>
#include "./philo.h"
#include "data.h"

size_t	get_time(void)
{
	size_t				time;
	static size_t		start_time = 0;
	struct timeval		tv;

	gettimeofday(&tv, NULL);
	time = tv.tv_sec * 1000000 + tv.tv_usec;
	if (start_time == 0)
		start_time = time;
	return ((time - start_time) / 1000);
}

size_t	get_time_eat(t_philo *philo, t_data *data)
{
	size_t	time;
	size_t	value;

	time = get_time();
	value = (data->life_expectency - philo->last_eat - time);
	if (value > data->eat_time)
		value = data->eat_time;
	return (value);
}

size_t	get_time_sleep(t_philo *philo, t_data *data)
{
	size_t	time;
	size_t	value;

	time = get_time();
	value = (data->life_expectency - (time - philo->last_eat));
	if (value > data->sleep_time)
		value = data->sleep_time;
	return (value);
}