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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* child.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: cacharle <me@cacharle.xyz> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/09/30 14:36:16 by cacharle #+# #+# */
/* Updated: 2021/01/09 15:59:00 by charles ### ########.fr */
/* */
/* ************************************************************************** */
#include "philo_three.h"
void *routine_death(t_philo *philo)
{
t_time current;
current = h_time_now();
while (current - philo->time_last_eat < philo->conf->timeout_death)
{
current = h_time_now();
usleep(1000);
}
event_die(philo);
return (NULL);
}
void st_child_loop(t_philo *philo)
{
long int eat_counter;
eat_counter = 0;
while (true)
{
sem_wait(philo->sem_grab);
event_take_fork(philo);
event_take_fork(philo);
sem_post(philo->sem_grab);
philo->time_last_eat = h_time_now();
event_eat(philo);
eat_counter++;
if (philo->conf->meal_num != -1 && eat_counter == philo->conf->meal_num)
{
sem_wait(philo->sem_stdout);
sem_post(philo->sem_meal_num);
sem_post(philo->sem_stdout);
}
event_sleep(philo);
event_think(philo);
}
}
pid_t child_start(t_philo *philo)
{
pthread_t thread_death;
pid_t pid;
if ((pid = fork()) == -1)
return (-1);
if (pid == 0)
{
philo->forks = sem_open(PHILO_SEM_NAME, 0);
philo->sem_stdout = sem_open(PHILO_SEM_STDOUT_NAME, 0);
philo->sem_finish = sem_open(PHILO_SEM_FINISH_NAME, 0);
philo->sem_meal_num = sem_open(PHILO_SEM_MEAL_NUM_NAME, 0);
philo->sem_start = sem_open(PHILO_SEM_START_NAME, 0);
philo->sem_grab = sem_open(PHILO_SEM_GRAB_NAME, 0);
philo->time_last_eat = h_time_now();
pthread_create(&thread_death, NULL, (t_routine)routine_death, philo);
pthread_detach(thread_death);
sem_wait(philo->sem_start);
st_child_loop(philo);
exit(0);
}
return (pid);
}
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