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kinou-p 2022-02-27 15:32:03 +01:00
commit eee4d08902
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* main.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: apommier <apommier@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2022/02/20 19:10:43 by apommier #+# #+# */
/* Updated: 2022/02/20 19:10:43 by apommier ### ########.fr */
/* */
/* ************************************************************************** */
#include "philosophers.h"
s_arg *create_data(int argc, char **argv)
{
s_arg *data;
data = malloc(sizeof(s_arg));
*data->death = 1;
data->nb_philo = ft_atoi(argv[1]);
data->time_to_die = ft_atoi(argv[2]);
data->time_to_eat = ft_atoi(argv[3]);
data->time_to_sleep = ft_atoi(argv[4]);
data->must_eat = 0;
if (argc == 6)
data->must_eat = ft_atoi(argv[5]);
else
data->must_eat = -1;
//data->time_start = get_time();
return (data);
}
void put_event(s_philo philo, char *event)
{
printf("%.4ldms Philo N°%d %s\n", get_time() - philo.data->time_start, philo.philo_id, event);
}
void philo_eat(s_philo *philo_tmp)
{
s_philo philo;
philo = *philo_tmp;
pthread_mutex_lock(philo.right_fork);
put_event(philo, "has taken a fork");
pthread_mutex_lock(philo.left_fork);
put_event(philo, "has taken a fork");
printf("old last eat of --%d-- = %ld\n", philo.philo_id, *philo_tmp->last_eat - philo.data->time_start);
*philo_tmp->last_eat = get_time();
printf("last eat of --%d-- = %ld\n", philo.philo_id, *philo_tmp->last_eat - philo.data->time_start);
put_event(philo, "is eating");
usleep(philo.data->time_to_eat * 1000);
pthread_mutex_unlock(philo.right_fork);
pthread_mutex_unlock(philo.left_fork);
put_event(philo, "is sleeping");
usleep(philo.data->time_to_sleep * 1000);
put_event(philo, "is thinking");
}
void *death_check(void *tmp)
{
s_philo *philo;
philo = (s_philo *)tmp;
while (*philo->data->death)
{
if (get_time() - *philo->last_eat > philo->data->time_to_die)
{
printf("PHILO IS DEAD last eat: %ld-- ", *philo->last_eat - philo->data->time_start);
put_event(*philo, "PHILO IS DEAD\n\n\n--\n");
exit(1);
}
}
return (0);
}
void *routine(void *tmp)
{
s_philo *philo;
pthread_t death;
philo = (s_philo *)tmp;
*philo->last_eat = get_time();
pthread_create(&death, 0, &death_check, philo);
pthread_detach(death);
while (1 && *philo->data->death && philo->must_eat)
{
philo_eat(philo);
philo->must_eat--;
}
return (0);
}
s_philo *create_philo(s_arg *data)
{
int i;
s_philo *philo;
i = 0;
philo = malloc(sizeof(s_philo) * data->nb_philo);
if (!philo)
return (0);
while (i < data->nb_philo)
{
philo[i].philo_id = i + 1;
philo[i].data = data;
philo[i].must_eat = data->must_eat;
philo[i].left_fork = malloc(sizeof(pthread_mutex_t));
pthread_mutex_init(philo[i].left_fork, 0);
i++;
}
i = 0;
while (i < data->nb_philo - 1)
{
philo[i].right_fork = philo[i + 1].left_fork;
i++;
}
philo[i].left_fork = philo[0].right_fork;
return (philo);
}
int start_philo(s_philo *philo)
{
int i;
i = 0;
philo->data->time_start = get_time();
while (i < philo[i].data->nb_philo - 1)
{
pthread_create(&philo[i].thread, 0, &routine, &philo[i]);
usleep(10);
i++;
}
i = 0;
while (i < philo[i].data->nb_philo - 1)
{
pthread_join(philo[i].thread, 0);
}
}
int main(int argc, char **argv)
{
s_arg *data;
s_philo *philo;
get_time();
data = create_data(argc, argv);
philo = create_philo(data);
start_philo(philo);
}
//put_event(*philo, "starting");
//if ( philo->philo_id == 3)
// *philo->data->test = 0;
//printf("je suis le numero %d\n", philo->philo_id);
//printf("test = %d\n", *philo->data->test);

44
philosophers.h Normal file
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* philosophers.h :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: apommier <apommier@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2022/02/20 19:10:49 by apommier #+# #+# */
/* Updated: 2022/02/20 19:10:49 by apommier ### ########.fr */
/* */
/* ************************************************************************** */
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <unistd.h>
typedef struct s_list
{
int nb_philo;
int time_to_die;
int time_to_eat;
int time_to_sleep;
int must_eat;
long time_start;
int death[1];
} s_arg;
typedef struct t_list
{
int philo_id;
pthread_t thread;
s_arg *data;
int must_eat;
long last_eat[1];
pthread_mutex_t *right_fork;
pthread_mutex_t *left_fork;
} s_philo;
//utils fonctions
long ft_atoi(const char *nptr);
long get_time(void);

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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* utils.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: apommier <apommier@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2022/02/25 03:28:46 by apommier #+# #+# */
/* Updated: 2022/02/25 03:28:46 by apommier ### ########.fr */
/* */
/* ************************************************************************** */
#include "philosophers.h"
long ft_atoi(const char *nptr)
{
int i;
long nbr;
long minus;
minus = 1;
nbr = 0;
i = 0;
while ((nptr[i] >= 9 && nptr[i] <= 13) || nptr[i] == 32)
i++;
if (nptr[i] == '+')
i++;
else if (nptr[i] == '-')
{
i++;
minus = -1;
}
while (nptr[i] >= '0' && nptr[i] <= '9')
{
nbr = nbr * 10 + nptr[i] - '0';
i++;
}
return (minus * nbr);
}
long get_time(void)
{
struct timeval time;
gettimeofday(&time, NULL);
//printf("time : %ld\n", time.tv_sec * 1000 + time.tv_usec / 1000);
return (time.tv_sec * 1000 + time.tv_usec / 1000);
}