mirror of
https://github.com/Ladebeze66/philosophers.git
synced 2025-12-15 21:57:00 +01:00
70 lines
2.2 KiB
C
Executable File
70 lines
2.2 KiB
C
Executable File
/* ************************************************************************** */
|
|
/* */
|
|
/* ::: :::::::: */
|
|
/* forks.c :+: :+: :+: */
|
|
/* +:+ +:+ +:+ */
|
|
/* By: fgras-ca <marvin@42.fr> +#+ +:+ +#+ */
|
|
/* +#+#+#+#+#+ +#+ */
|
|
/* Created: 2023/10/17 11:50:15 by fgras-ca #+# #+# */
|
|
/* Updated: 2023/10/23 16:09:52 by fgras-ca ### ########.fr */
|
|
/* */
|
|
/* ************************************************************************** */
|
|
|
|
#include "philo.h"
|
|
|
|
static void single_philosopher(t_philo *philo)
|
|
{
|
|
pthread_mutex_lock(&philo->left_fork->mutex_fork);
|
|
print_action(philo, BLUE"has taken a fork🍴"RST, 0);
|
|
while (1)
|
|
{
|
|
pthread_mutex_lock(&philo->sim->end_mutex);
|
|
if (philo->sim->is_philosopher_dead)
|
|
{
|
|
pthread_mutex_unlock(&philo->sim->end_mutex);
|
|
break ;
|
|
}
|
|
pthread_mutex_unlock(&philo->sim->end_mutex);
|
|
}
|
|
pthread_mutex_unlock(&philo->left_fork->mutex_fork);
|
|
}
|
|
|
|
void take_forks(t_philo *philo)
|
|
{
|
|
if (philo->sim->num_philosophers == 1)
|
|
{
|
|
single_philosopher(philo);
|
|
return ;
|
|
}
|
|
usleep(300);
|
|
if (philo->id % 2 == 0)
|
|
{
|
|
pthread_mutex_lock(&philo->left_fork->mutex_fork);
|
|
print_action(philo, BLUE"has taken a fork🍴"RST, 0);
|
|
pthread_mutex_lock(&philo->right_fork->mutex_fork);
|
|
print_action(philo, BLUE"has taken a fork🍴"RST, 0);
|
|
}
|
|
else
|
|
{
|
|
pthread_mutex_lock(&philo->right_fork->mutex_fork);
|
|
print_action(philo, BLUE"has taken a fork🍴"RST, 0);
|
|
pthread_mutex_lock(&philo->left_fork->mutex_fork);
|
|
print_action(philo, BLUE"has taken a fork🍴"RST, 0);
|
|
}
|
|
philo->can_eat = 1;
|
|
}
|
|
|
|
void release_forks(t_philo *philo)
|
|
{
|
|
if (philo->can_eat)
|
|
{
|
|
pthread_mutex_unlock(&philo->left_fork->mutex_fork);
|
|
if (philo->sim->num_philosophers > 1)
|
|
{
|
|
pthread_mutex_unlock(&philo->right_fork->mutex_fork);
|
|
}
|
|
philo->can_eat = 0;
|
|
}
|
|
usleep(300);
|
|
}
|