42/42_INT_08_philosophers
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

nimp dans timestamp

Browse Source
This commit is contained in:
Hugo LAMY
2022-01-25 18:48:49 +01:00
parent b998de9340
commit d8475537e0
6 changed files with 115 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files

90
srcs/exec.c
View File

@@ -1,46 +1,88 @@
#include "philo.h"
// TODO : compare time with time before dying
void go_sleep(t_philo *philo, int time)
void go_sleep(t_philo *philo, int action_time)
{
long int start_time;
long int death_time;
long int next_step_time;
struct timeval stime;
int time_to_death;
start_time = philo->t_last_meal_u;
if (start_time == 0)
start_time = philo->global->t_start_u;
// now_s
// now_u
// last_meal_s
// last_meal_u
//
// last_meal now
// v v
// ------|-----------|------------------------------------------
// | |
// |_d_e_a_t_h__t_i_m_e__________________|
// |
// |_e_a_t__t_i_m_e_________________|->action_time
// |
// |_d_i_f_f___|
// |
// |_d_e_a_t_h_-_d_i_f_f_____|->time_to_death
//
//
// last_meal now
// v v
// ------|-----------|------------------------------------------
// |
// |_d_e_a_t_h__t_i_m_e_______________________________|
// |
// |_e_a_t__t_i_m_e_________________|->action_time
// |
// |_d_i_f_f___|
// |
// |_d_e_a_t_h_-_d_i_f_f__________________|->time_to_death
//
//
// last_meal now
// v v
// ------|-----------|------------------------------------------
// |
// |_death___|
// |
// |_e_a_t__t_i_m_e_________________|->action_time
// |
// |_d_i_f_f___|
// |
// |_|->time_to_death
//
//
death_time = start_time + (philo->params->t_die * 1000);
next_step_time = start_time + (time * 1000);
if (death_time < next_step_time)
gettimeofday(&stime, NULL);
time_to_death = diff_time(philo->t_last_meal, stime);
time_to_death = philo->params->t_die - time_to_death;
if (time_to_death > action_time)
usleep(action_time * 1000);
else if (time_to_death > 0)
usleep(philo->params->t_die * 1000);
else
usleep(time * 1000);
}
int ret_unlock(t_mtx *mutex_1, t_mtx *mutex_2, int ret)
int ret_unlock(t_philo *philo, int nbr_fork, int ret)
{
if (mutex_1)
pthread_mutex_unlock(mutex_1);
if (mutex_2)
pthread_mutex_unlock(mutex_2);
pthread_mutex_unlock(&philo->m_fork);
if (nbr_fork == 2)
pthread_mutex_unlock(&philo->next->m_fork);
return (ret);
}
int take_forks(t_philo *philo)
{
pthread_mutex_lock(&(philo->m_fork));
if (philo->global->dead != 0)
return (ret_unlock(&(philo->m_fork), NULL, 1));
if (is_dead(philo))
return (ret_unlock(philo, 1, 1));
print_message(philo, "has taken a fork");
pthread_mutex_lock(&(philo->next->m_fork));
if (philo->global->dead != 0)
return (ret_unlock(&(philo->m_fork), &(philo->next->m_fork), 1));
if (is_dead(philo))
return (ret_unlock(philo, 2, 1));
print_message(philo, "has taken a fork");
update_time(philo);
print_message(philo, "is eating");
philo->eat++;
if (philo->params->n_eat && philo->eat >= philo->params->n_eat)
return (ret_unlock(philo, 2, 1));
go_sleep(philo, philo->params->t_eat);
pthread_mutex_unlock(&(philo->next->m_fork));
@@ -60,8 +102,12 @@ void *philo_exec(void *arg)
{
if (take_forks(philo) != 0)
break ;
if (is_dead(philo))
break ;
print_message(philo, "is sleeping");
go_sleep(philo, philo->params->t_slp);
if (is_dead(philo))
break ;
print_message(philo, "is thinking");
}
return (NULL);