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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* fork.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: cacharle <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/02/09 23:46:40 by cacharle #+# #+# */
/* Updated: 2020/02/15 01:23:25 by cacharle ### ########.fr */
/* */
/* ************************************************************************** */
#include "philo_one.h"
t_fork *forks_new(int num)
{
int i;
t_fork *forks;
if ((forks = (t_fork*)malloc(sizeof(t_fork) * num)) == NULL)
return (NULL);
i = -1;
while (++i < num)
{
if (pthread_mutex_init(&forks[i], NULL) != 0)
{
forks_destroy(forks, i + 1);
return (NULL);
}
}
return (forks);
}
void forks_destroy(t_fork *forks, int num)
{
while (num-- > 0)
pthread_mutex_destroy(&forks[num]);
free(forks);
}
t_routine_arg *forks_dispatch(t_philo *philos, t_fork *forks,
t_philo_args *args)
{
int i;
t_routine_arg *routine_args;
if ((routine_args = (t_routine_arg*)malloc(sizeof(t_routine_arg)
* args->philo_num)) == NULL)
return (NULL);
i = -1;
while (++i < args->philo_num)
{
routine_args[i].args = args;
routine_args[i].philo = philos + i;
routine_args[i].fork_left = forks + i % args->philo_num;
routine_args[i].fork_right = forks + (i + 1) % args->philo_num;
}
return (routine_args);
}
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