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implemenation droite gauche fonctionne en changeant technique de temps

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hugogogo
2022-01-31 00:17:07 +01:00
parent 7dc4c5a84f
commit c3ef767bdb
5 changed files with 340 additions and 225 deletions
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133
philo/srcs/exec.c
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@@ -1,17 +1,25 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* exec.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: hulamy <hulamy@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2022/01/26 15:30:28 by hulamy #+# #+# */
/* Updated: 2022/01/30 15:43:19 by hulamy ### ########.fr */
/* */
/* ************************************************************************** */
#include "philo.h"
int get_time(t_params *params)
{
struct timeval tp;
long time;
if (gettimeofday(&tp, NULL) < 0)
{
return (-1);
}
time = tp.tv_sec * 1000 + tp.tv_usec / 1000;
if (!params->start_time)
{
params->start_time = time;
return (0);
}
time -= params->start_time;
return (time);
}
/*
static void action_delay(t_philo *philo, int action_time)
{
struct timeval stime;
@@ -24,20 +32,68 @@ static void action_delay(t_philo *philo, int action_time)
else if (death_time > 0)
usleep(philo->params->t_die * 1000);
}
*/
/*
static int ret_err_unlock(t_philo *philo, int nbr_fork)
{
pthread_mutex_unlock(&philo->m_fork);
if (nbr_fork == 2)
pthread_mutex_unlock(&philo->next->m_fork);
pthread_mutex_unlock(&philo->m_fork);
return (1);
}
*/
static int ret_err_unlock(t_mtx *fork1, t_mtx *fork2)
{
if (fork2)
pthread_mutex_unlock(fork2);
if (fork1)
pthread_mutex_unlock(fork1);
return (1);
}
static int eat(t_philo *philo, t_mtx *fork1, t_mtx *fork2)
{
int time;
pthread_mutex_lock(fork1);
if (print_message(philo, WHITE, "has taken a fork"))
return (ret_err_unlock(fork1, NULL));
if (fork1 == fork2)
return (ret_err_unlock(fork1, NULL));
pthread_mutex_lock(fork2);
if (print_message(philo, WHITE, "has taken a fork"))
return (ret_err_unlock(fork1, fork2));
// update_time(philo);
time = get_time(philo->params);
if (print_message(philo, B_YELLOW, "is eating"))
return (ret_err_unlock(fork1, fork2));
// action_delay(philo, philo->params->t_eat);
while (get_time(philo->params) - time < philo->params->t_eat)
usleep(100);
pthread_mutex_lock(&(philo->m_eat));
philo->eat_count++;
pthread_mutex_unlock(&(philo->m_eat));
pthread_mutex_unlock(fork2);
pthread_mutex_unlock(fork1);
return (0);
}
/*
static int eat(t_philo *philo)
{
pthread_mutex_lock(&(philo->m_fork));
if (print_message(philo, WHITE, "has taken a fork"))
return (ret_err_unlock(philo, 1));
if (philo->next == philo)
return (ret_err_unlock(philo, 1));
pthread_mutex_lock(&(philo->next->m_fork));
if (print_message(philo, WHITE, "has taken a fork"))
return (ret_err_unlock(philo, 2));
@@ -52,22 +108,65 @@ static int eat(t_philo *philo)
pthread_mutex_unlock(&(philo->m_fork));
return (0);
}
*/
/*
==10069== Observed (incorrect) order is: acquisition of lock at 0x54541F8
==10069== at 0x4C3603C: ??? (in /usr/lib/valgrind/vgpreload_helgrind-amd64-linux.so)
==10069== by 0x401188: eat (exec.c:38)
==10069== by 0x4010E7: philo_exec (exec.c:68)
==10069== by 0x4C38C26: ??? (in /usr/lib/valgrind/vgpreload_helgrind-amd64-linux.so)
==10069== by 0x4E4B6DA: start_thread (pthread_create.c:463)
==10069== by 0x518471E: clone (clone.S:95)
==10069==
==10069== followed by a later acquisition of lock at 0x54542E8
==10069== at 0x4C3603C: ??? (in /usr/lib/valgrind/vgpreload_helgrind-amd64-linux.so)
==10069== by 0x401209: eat (exec.c:43)
==10069== by 0x4010E7: philo_exec (exec.c:68)
==10069== by 0x4C38C26: ??? (in /usr/lib/valgrind/vgpreload_helgrind-amd64-linux.so)
==10069== by 0x4E4B6DA: start_thread (pthread_create.c:463)
==10069== by 0x518471E: clone (clone.S:95)
*/
void *philo_exec(void *arg)
{
int time;
t_philo *philo;
t_mtx *fork1;
t_mtx *fork2;
philo = (t_philo *)arg;
init_time(philo);
// init_time(philo);
get_time(philo->params);
// if (philo->p_nbr % 2 == 0)
// usleep(10 * 1000);
fork1 = &(philo->m_fork);
fork2 = &(philo->m_fork);
// if (philo->global->t_start.ts == 0)
// if (philo->p_nbr < philo->params->n_phi / 2)
if (philo->p_nbr % 2 == 0)
usleep(10 * 1000);
fork1 = &(philo->next->m_fork);
else
fork2 = &(philo->next->m_fork);
while (1)
{
if (eat(philo) != 0)
if (eat(philo, fork1, fork2) != 0)
// if (eat(philo) != 0)
break ;
time = get_time(philo->params);
if (print_message(philo, B_BLUE, "is sleeping"))
break ;
action_delay(philo, philo->params->t_slp);
// action_delay(philo, philo->params->t_slp);
while (get_time(philo->params) - time < philo->params->t_slp)
usleep(100);
if (print_message(philo, B_GREEN, "is thinking"))
break ;
}