mirror of
https://github.com/Ladebeze66/philosophers.git
synced 2025-12-15 13:46:59 +01:00
70 lines
2.2 KiB
C
Executable File
70 lines
2.2 KiB
C
Executable File
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* forks.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: fgras-ca <marvin@42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2023/10/17 11:50:15 by fgras-ca #+# #+# */
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/* Updated: 2023/10/23 16:09:52 by fgras-ca ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "philo.h"
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static void single_philosopher(t_philo *philo)
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{
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pthread_mutex_lock(&philo->left_fork->mutex_fork);
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print_action(philo, BLUE"has taken a fork🍴"RST, 0);
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while (1)
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{
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pthread_mutex_lock(&philo->sim->end_mutex);
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if (philo->sim->is_philosopher_dead)
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{
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pthread_mutex_unlock(&philo->sim->end_mutex);
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break ;
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}
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pthread_mutex_unlock(&philo->sim->end_mutex);
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}
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pthread_mutex_unlock(&philo->left_fork->mutex_fork);
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}
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void take_forks(t_philo *philo)
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{
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if (philo->sim->num_philosophers == 1)
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{
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single_philosopher(philo);
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return ;
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}
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usleep(300);
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if (philo->id % 2 == 0)
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{
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pthread_mutex_lock(&philo->left_fork->mutex_fork);
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print_action(philo, BLUE"has taken a fork🍴"RST, 0);
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pthread_mutex_lock(&philo->right_fork->mutex_fork);
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print_action(philo, BLUE"has taken a fork🍴"RST, 0);
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}
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else
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{
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pthread_mutex_lock(&philo->right_fork->mutex_fork);
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print_action(philo, BLUE"has taken a fork🍴"RST, 0);
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pthread_mutex_lock(&philo->left_fork->mutex_fork);
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print_action(philo, BLUE"has taken a fork🍴"RST, 0);
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}
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philo->can_eat = 1;
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}
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void release_forks(t_philo *philo)
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{
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if (philo->can_eat)
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{
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pthread_mutex_unlock(&philo->left_fork->mutex_fork);
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if (philo->sim->num_philosophers > 1)
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{
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pthread_mutex_unlock(&philo->right_fork->mutex_fork);
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}
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philo->can_eat = 0;
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}
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usleep(300);
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}
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