65 lines
1.5 KiB
C
65 lines
1.5 KiB
C
#include "philo.h"
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void go_sleep(t_philo *philo, int action_time)
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{
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struct timeval stime;
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int time_to_death;
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gettimeofday(&stime, NULL);
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time_to_death = diff_time(philo->t_last_meal, stime);
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time_to_death = philo->params->t_die - time_to_death;
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if (time_to_death > action_time)
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usleep(action_time * 1000);
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else if (time_to_death > 0)
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usleep(philo->params->t_die * 1000);
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}
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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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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") == 1)
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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") == 1)
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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") == 1)
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return (ret_err_unlock(philo, 2));
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philo->eat++;
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go_sleep(philo, philo->params->t_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") == 1)
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break ;
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go_sleep(philo, philo->params->t_slp);
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if (print_message(philo, B_GREEN, "is thinking") == 1)
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break ;
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}
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return (NULL);
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}
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