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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* main.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: cacharle <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/02/15 00:45:24 by cacharle #+# #+# */
/* Updated: 2021/01/10 14:25:49 by cacharle ### ########.fr */
/* */
/* ************************************************************************** */
#include "philo_three.h"
static int st_destroy(t_philo_conf *conf, pid_t *pids, long int philo_num)
{
long int i;
if (pids != NULL)
{
i = -1;
while (++i < philo_num)
kill(pids[i], SIGKILL);
free(pids);
}
h_destroy_sem(PHILO_SEM_NAME, conf->forks);
h_destroy_sem(PHILO_SEM_STDOUT_NAME, conf->sem_stdout);
h_destroy_sem(PHILO_SEM_FINISH_NAME, conf->sem_finish);
h_destroy_sem(PHILO_SEM_MEAL_NUM_NAME, conf->sem_meal_num);
h_destroy_sem(PHILO_SEM_START_NAME, conf->sem_start);
h_destroy_sem(PHILO_SEM_GRAB_NAME, conf->sem_grab);
return (1);
}
static int st_setup(t_philo_conf *conf, pid_t **pids)
{
conf->forks = SEM_FAILED;
conf->sem_stdout = SEM_FAILED;
conf->sem_finish = SEM_FAILED;
conf->sem_meal_num = SEM_FAILED;
conf->sem_start = SEM_FAILED;
conf->sem_grab = SEM_FAILED;
*pids = NULL;
if (!h_sem_create(PHILO_SEM_NAME, conf->philo_num, &conf->forks) ||
!h_sem_create(PHILO_SEM_STDOUT_NAME, 1, &conf->sem_stdout) ||
!h_sem_create(PHILO_SEM_FINISH_NAME, 1, &conf->sem_finish) ||
!h_sem_create(PHILO_SEM_MEAL_NUM_NAME,
conf->philo_num, &conf->sem_meal_num) ||
!h_sem_create(PHILO_SEM_START_NAME,
conf->philo_num, &conf->sem_start) ||
!h_sem_create(PHILO_SEM_GRAB_NAME, 1, &conf->sem_grab) ||
(*pids = malloc(sizeof(pid_t) * conf->philo_num)) == NULL)
return (1);
return (0);
}
static int st_start(t_philo_conf *conf, pid_t *pids, t_time initial_time)
{
t_philo philo;
long int i;
i = -1;
while (++i < conf->philo_num)
sem_wait(conf->sem_start);
i = -1;
while (++i < conf->philo_num)
{
philo.conf = conf;
philo.id = i + 1;
philo.initial_time = initial_time;
if ((pids[i] = child_start(&philo)) == -1)
return (1);
}
i = -1;
while (++i < conf->philo_num)
sem_post(conf->sem_start);
return (0);
}
static void *st_routine_meal_num(t_philo_conf *conf)
{
long int i;
i = -1;
while (++i < conf->philo_num)
sem_wait(conf->sem_meal_num);
i = -1;
while (++i < conf->philo_num)
sem_wait(conf->sem_meal_num);
sem_wait(conf->sem_stdout);
sem_post(conf->sem_finish);
return (NULL);
}
int main(int argc, char **argv)
{
t_philo_conf conf;
pid_t *pids;
pthread_t thread_meal_num;
if (!parse_args((t_philo_args*)&conf, argc, argv))
return (1);
if (conf.philo_num == 0 || conf.meal_num == 0)
return (0);
if (st_setup(&conf, &pids) != 0 || st_start(&conf, pids, h_time_now()) != 0)
return (st_destroy(&conf, pids, conf.philo_num));
if (conf.meal_num != -1)
{
if (pthread_create(&thread_meal_num,
NULL, (t_routine)st_routine_meal_num, &conf) != 0)
return (st_destroy(&conf, pids, conf.philo_num));
pthread_detach(thread_meal_num);
}
sem_wait(conf.sem_finish);
sem_wait(conf.sem_finish);
st_destroy(&conf, pids, conf.philo_num);
return (0);
}
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