76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* exec.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: hulamy <hulamy@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2022/01/26 15:30:28 by hulamy #+# #+# */
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/* Updated: 2022/01/30 15:43:19 by hulamy ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "philo.h"
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static void action_delay(t_philo *philo, int action_time)
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{
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struct timeval stime;
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int death_time;
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gettimeofday(&stime, NULL);
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death_time = philo->params->t_die - diff_time(philo, &stime);
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if (death_time > action_time)
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usleep(action_time * 1000);
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else if (death_time > 0)
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usleep(philo->params->t_die * 1000);
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}
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static int ret_err_unlock(t_philo *philo, int nbr_fork)
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{
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pthread_mutex_unlock(&philo->m_fork);
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if (nbr_fork == 2)
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pthread_mutex_unlock(&philo->next->m_fork);
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return (1);
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}
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static int eat(t_philo *philo)
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{
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pthread_mutex_lock(&(philo->m_fork));
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if (print_message(philo, WHITE, "has taken a fork"))
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return (ret_err_unlock(philo, 1));
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pthread_mutex_lock(&(philo->next->m_fork));
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if (print_message(philo, WHITE, "has taken a fork"))
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return (ret_err_unlock(philo, 2));
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update_time(philo);
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if (print_message(philo, B_YELLOW, "is eating"))
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return (ret_err_unlock(philo, 2));
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action_delay(philo, philo->params->t_eat);
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pthread_mutex_lock(&(philo->m_eat));
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philo->eat_count++;
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pthread_mutex_unlock(&(philo->m_eat));
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pthread_mutex_unlock(&(philo->next->m_fork));
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pthread_mutex_unlock(&(philo->m_fork));
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return (0);
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}
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void *philo_exec(void *arg)
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{
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t_philo *philo;
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philo = (t_philo *)arg;
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init_time(philo);
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if (philo->p_nbr % 2 == 0)
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usleep(10 * 1000);
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while (1)
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{
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if (eat(philo) != 0)
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break ;
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if (print_message(philo, B_BLUE, "is sleeping"))
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break ;
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action_delay(philo, philo->params->t_slp);
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if (print_message(philo, B_GREEN, "is thinking"))
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break ;
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}
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return (NULL);
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}
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