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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* main.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: cacharle <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/02/14 22:45:23 by cacharle #+# #+# */
/* Updated: 2021/01/10 13:39:54 by cacharle ### ########.fr */
/* */
/* ************************************************************************** */
#include "philo_two.h"
#define PHILO_SEM_NAME "semaphore_philo_two"
#define PHILO_SEM_STDOUT_NAME "semaphore_philo_two_stdout"
#define PHILO_SEM_FINISH_NAME "semaphore_philo_two_finish"
#define PHILO_SEM_START_NAME "semaphore_philo_two_start"
#define PHILO_SEM_GRAB_NAME "semaphore_philo_two_grab"
#define PHILO_SEM_MEAL_NUM_NAME "semaphore_philo_two_meal_num"
static int st_destroy(t_philo *philos, long int philo_num)
{
sem_unlink(PHILO_SEM_NAME);
sem_unlink(PHILO_SEM_STDOUT_NAME);
sem_unlink(PHILO_SEM_FINISH_NAME);
sem_unlink(PHILO_SEM_MEAL_NUM_NAME);
sem_unlink(PHILO_SEM_START_NAME);
sem_unlink(PHILO_SEM_GRAB_NAME);
while (philo_num-- > 0)
sem_unlink(philo_sem_eat_name(
PHILO_SEM_EAT_PREFIX, philos[philo_num].id));
free(philos);
return (1);
}
static bool st_sem_create(const char *name, unsigned int value, sem_t **sem)
{
sem_unlink(name);
return ((*sem = sem_open(name, O_CREAT | O_EXCL, 0700, value))
!= SEM_FAILED);
}
static int st_setup(t_philo_conf *conf, t_philo **philos)
{
if (!st_sem_create(PHILO_SEM_NAME, conf->philo_num, &conf->sem_forks) ||
!st_sem_create(PHILO_SEM_STDOUT_NAME, 1, &conf->sem_stdout) ||
!st_sem_create(PHILO_SEM_FINISH_NAME, 1, &conf->sem_finish) ||
!st_sem_create(PHILO_SEM_START_NAME,
conf->philo_num, &conf->sem_start) ||
!st_sem_create(PHILO_SEM_GRAB_NAME, 1, &conf->sem_grab) ||
!st_sem_create(PHILO_SEM_MEAL_NUM_NAME,
conf->philo_num, &conf->sem_meal_num))
return (st_destroy(NULL, 0));
if ((*philos = routine_create_philos(conf)) == NULL)
return (st_destroy(NULL, 0));
return (0);
}
static int st_start(t_philo_conf *conf, t_philo *philos)
{
long int i;
pthread_t thread;
i = -1;
while (++i < conf->philo_num)
sem_wait(conf->sem_start);
i = -1;
while (++i < conf->philo_num)
{
if (pthread_create(&thread, NULL,
(t_routine)routine_philo, philos + i) != 0)
return (st_destroy(philos, conf->philo_num));
pthread_detach(thread);
}
conf->initial_time = h_time_now();
i = -1;
while (++i < conf->philo_num)
sem_post(conf->sem_start);
return (0);
}
int main(int argc, char **argv)
{
t_philo_conf conf;
t_philo *philos;
pthread_t thread_flush;
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, &philos) != 0 || st_start(&conf, philos) != 0)
return (1);
if (pthread_create(&thread_flush, NULL,
(t_routine)routine_flush, &conf) != 0)
return (st_destroy(philos, conf.philo_num));
pthread_detach(thread_flush);
if (pthread_create(&thread_meal_num, NULL,
(t_routine)routine_meal_num, &conf) != 0)
return (st_destroy(philos, conf.philo_num));
pthread_detach(thread_meal_num);
sem_wait(conf.sem_finish);
sem_wait(conf.sem_finish);
philo_put_flush();
st_destroy(philos, conf.philo_num);
return (0);
}
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