119 lines
3.2 KiB
C
119 lines
3.2 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* philo_routine.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: cchauvet <cchauvet@student.42angouleme.fr +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2023/04/27 11:44:14 by cchauvet #+# #+# */
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/* Updated: 2023/05/16 13:13:13 by cchauvet ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include <unistd.h>
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#include "./time.h"
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#include "./philo.h"
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#include "./print.h"
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#include "data.h"
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bool check(t_philo *philo, t_data *data)
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{
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bool stop;
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if (get_min_meal(data) == data->nb_meals)
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{
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pthread_mutex_lock(&philo->stop_mutex);
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philo->stop = 1;
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pthread_mutex_unlock(&philo->stop_mutex);
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return (1);
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}
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pthread_mutex_lock(&data->stop_mutex);
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stop = data->stop;
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pthread_mutex_unlock(&data->stop_mutex);
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if (stop)
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{
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pthread_mutex_lock(&philo->stop_mutex);
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philo->stop = 1;
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pthread_mutex_unlock(&philo->stop_mutex);
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}
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return (stop);
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}
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int philo_take_forks(t_philo *philo, t_data *data)
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{
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pthread_mutex_lock(&data->forks[philo->id]);
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print_take_a_fork(philo);
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if (check(philo, data))
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{
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pthread_mutex_unlock(&data->forks[philo->id]);
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return (1);
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}
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while ((philo->id + 1) % data->nb_philos == philo->id)
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{
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if (check(philo, data))
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{
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pthread_mutex_unlock(&data->forks[philo->id]);
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return (1);
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}
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}
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pthread_mutex_lock(&data->forks[(philo->id + 1) % data->nb_philos]);
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print_take_a_fork(philo);
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if (check(philo, data))
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{
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pthread_mutex_unlock(&data->forks[(philo->id + 1) % data->nb_philos]);
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pthread_mutex_unlock(&data->forks[philo->id]);
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return (1);
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}
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return (0);
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}
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bool philo_eat(t_philo *philo, t_data *data)
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{
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if (philo_take_forks(philo, data))
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return (1);
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philo->last_eat = get_time();
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print_eating(philo);
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usleep(get_time_eat(philo, data) * 1000);
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pthread_mutex_unlock(&data->forks[philo->id]);
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pthread_mutex_unlock(&data->forks[(philo->id + 1) % data->nb_philos]);
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if (check(philo, data))
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return (1);
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pthread_mutex_lock(&philo->last_eat_mutex);
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pthread_mutex_unlock(&philo->last_eat_mutex);
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pthread_mutex_lock(&philo->nb_meal_mutex);
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philo->nb_meal++;
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pthread_mutex_unlock(&philo->nb_meal_mutex);
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return (0);
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}
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void philo_sleep(t_data *data, t_philo *philo)
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{
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print_sleeping(philo);
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usleep(get_time_sleep(philo, data) * 1000);
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}
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void *philo_routine(void *arg)
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{
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t_philo *philo;
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t_data *data;
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philo = arg;
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data = philo->data;
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print_thinking(philo);
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usleep((philo->id % 2) * (get_time_eat(philo, data)) * 1000);
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while (true)
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{
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if (check(philo, data))
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return (NULL);
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if (philo_eat(philo, data))
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return (NULL);
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if (check(philo, data))
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return (NULL);
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philo_sleep(data, philo);
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if (check(philo, data))
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return (NULL);
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print_thinking(philo);
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}
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return (NULL);
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}
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