42/42_INT_08_philosophers
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routine des philosophers ok et debut usage time

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This commit is contained in:
Hugo LAMY
2022-01-21 12:05:52 +01:00
parent 9a59f54641
commit 3ee91785f6
4 changed files with 57 additions and 45 deletions
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1
headers/philo.h
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@@ -7,6 +7,7 @@
# include <string.h>
# include <unistd.h>
# include <pthread.h>
# include <sys/time.h>
# include "philo_struct.h"
# include "philo_proto.h"

6
headers/philo_struct.h
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@@ -15,9 +15,13 @@ typedef struct s_params
typedef struct s_philo
{
t_params *params;
int philo_nbr;
int p_nbr;
t_mtx m_fork;
t_mtx *m_print;
long int t_start_s;
long int t_start_u;
long int t_last_meal_s;
long int t_last_meal_u;
struct s_philo *prev;
struct s_philo *next;
} t_philo;

93
srcs/exec.c
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@@ -3,66 +3,73 @@
void print_message(t_philo *philo, char *msg)
{
pthread_mutex_lock(philo->m_print);
ft_printf("%i %s\n", philo->philo_nbr, msg);
ft_printf("%i %s\n", philo->p_nbr, msg);
pthread_mutex_unlock(philo->m_print);
}
// long int t_start_s;
// long int t_start_u;
// long int t_last_meal_s;
// long int t_last_meal_u;
void init_time(t_philo *philo)
{
struct timeval stime;
gettimeofday(&stime, NULL);
philo->t_start_s = stime.tv_sec;
philo->t_start_u = stime.tv_usec;
}
void update_time(t_philo *philo)
{
struct timeval stime;
// long int time_stamp;
gettimeofday(&stime, NULL);
philo->t_last_meal_s = stime.tv_sec;
philo->t_last_meal_u = stime.tv_usec;
// time_stamp = (stime.tv_sec - scd) * 1000 + (stime.tv_usec - mcr) / 1000;
}
void take_forks(t_philo *philo)
{
pthread_mutex_lock(&(philo->m_fork));
pthread_mutex_lock(&(philo->next->m_fork));
print_message(philo, "has taken a fork");
usleep(philo->params->t_eat);
pthread_mutex_lock(&(philo->next->m_fork));
print_message(philo, "has taken a fork");
print_message(philo, "is eating");
usleep(philo->params->t_eat * 1000);
pthread_mutex_unlock(&(philo->next->m_fork));
pthread_mutex_unlock(&(philo->m_fork));
}
// print_message(philo, "has taken a fork");
// print_message(philo, "is eating");
// print_message(philo, "is thinking");
// print_message(philo, "is sleeping");
//
// int n_phi; // number_of_philosophers
// int t_die; // time_to_die
// int t_eat; // time_to_eat
// int t_slp; // time_to_sleep
// int n_eat; // [number_of_times_each_philosopher_must_eat]
void *philo_exec(void *arg)
{
t_philo *philo;
philo = (t_philo*)arg;
print_message(philo, "is thinking");
take_forks(philo);
init_time(philo);
if (philo->p_nbr % 2 == 0)
usleep(10 * 1000);
while (1)
{
take_forks(philo);
// eat
// "has taken a fork"
// "is eating"
// sleep
// "is sleeping"
// think
// "is thinking"
// die
// "died"
//int i = 0;
// while (i < 2)
// {
// if (!take_forks(philo))
// continue ;
//
// usleep(philo->params->t_eat);
//
// pthread_mutex_lock(&mutex);
// philo->fork = 1;
// philo->next->fork = 1;
// ft_printf("%i is sleeping\n", philo->philo_nbr);
// pthread_mutex_unlock(&mutex);
//
// usleep(philo->params->t_slp);
//
// pthread_mutex_lock(&mutex);
// ft_printf("%i is thinking\n", philo->philo_nbr);
// pthread_mutex_unlock(&mutex);
// pthread_mutex_lock(philo->mutex);
// pthread_mutex_lock(&mutex);
// ft_printf("%i is thinking\n", philo->philo_nbr);
// pthread_mutex_unlock(philo->mutex);
// pthread_mutex_unlock(&mutex);
// i++;
// }
print_message(philo, "is sleeping");
usleep(philo->params->t_slp * 1000);
print_message(philo, "is sleeping");
}
return (NULL);
}

2
srcs/init.c
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@@ -8,7 +8,7 @@ t_philo *lst_add_philo(t_philo *philo, t_params *params, t_mtx *m_print, int i)
if (new == NULL)
return (NULL);
new->params = params;
new->philo_nbr = i + 1;
new->p_nbr = i + 1;
if (pthread_mutex_init(&(new->m_fork), NULL) != 0)
return (NULL);
new->m_print = m_print;