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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* philo.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: cacharle <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/02/09 23:47:14 by cacharle #+# #+# */
/* Updated: 2021/01/08 18:56:10 by charles ### ########.fr */
/* */
/* ************************************************************************** */
#include "philo_one.h"
t_philo *philos_new(t_philo_conf *conf, pthread_mutex_t *forks)
{
long int i;
t_philo *philos;
if (conf->philo_num < 0)
return (NULL);
if ((philos = malloc(conf->philo_num * sizeof(t_philo))) == NULL)
return (NULL);
i = -1;
while (++i < conf->philo_num)
{
philos[i].id = i + 1;
philos[i].conf = conf;
philos[i].fork_left = forks + i % conf->philo_num;
philos[i].fork_right = forks + (i + 1) % conf->philo_num;
pthread_mutex_init(&philos[i].mutex_start, NULL);
pthread_mutex_lock(&philos[i].mutex_start);
}
return (philos);
}
bool philos_start(t_philo *philos, long int num)
{
long int i;
i = -1;
while (++i < num)
{
if (i % 2 == 0)
continue;
if (pthread_create(
&philos[i].thread,
NULL,
(t_routine)routine_philo,
(void*)(philos + i)) != 0)
{
while (--i >= 0)
pthread_detach(philos[i].thread);
return (false);
}
}
i = -1;
while (++i < num)
{
if (i % 2 == 0)
continue;
pthread_mutex_unlock(&philos[i].mutex_start);
/* usleep(200); */
}
i = -1;
while (++i < num)
{
if (i % 2 == 1)
continue;
if (pthread_create(
&philos[i].thread,
NULL,
(t_routine)routine_philo,
(void*)(philos + i)) != 0)
{
while (--i >= 0)
pthread_detach(philos[i].thread);
return (false);
}
}
usleep(1000);
i = -1;
while (++i < num)
{
if (i % 2 == 1)
continue;
pthread_mutex_unlock(&philos[i].mutex_start);
/* usleep(200); */
}
return (true);
}
void philos_detach(t_philo *philos, long int num)
{
long int i;
if (philos == NULL)
return ;
i = -1;
while (++i < num)
pthread_detach(philos[i].thread);
}
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