Added philo_three draft

4 files changed, 220 insertions, 0 deletions

diff --git a/philo_three/src/child.c b/philo_three/src/child.c
new file mode 100644
index 0000000..f0e7ebd
--- /dev/null
+++ b/philo_three/src/child.c
@@ -0,0 +1,53 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   child.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <me@cacharle.xyz>                 +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/09/30 14:36:16 by cacharle          #+#    #+#             */
+/*   Updated: 2020/09/30 14:39:58 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "philo_three.h"
+
+void	*routine_death(t_philo_args *arg)
+{
+	t_time	current;
+
+	current = h_time_now();
+	while (current - arg->time_last_eat < arg->conf->timeout_death)
+		current = h_time_now();
+	if (!arg->conf->all_alive)
+		return (NULL);
+	event_die(arg);
+	return (NULL);
+}
+
+pid_t	child_start(t_philo_args *arg)
+{
+	pid_t	pid;
+	sem_t			*forks;
+	sem_t			*sem_stdout;
+	sem_t			*sem_alive;
+
+	pid = fork();
+	if (pid == -1)
+		return (-1);
+	if (pid == 0)
+	{
+		forks = sem_open(PHILO_SEM_NAME, 0);
+		sem_stdout = sem_open(PHILO_SEM_STDOUT_NAME, 0);
+		pthread_create(&death_thread, NULL, (t_routine)routine_death, &args);
+		event_think();
+		while (true)
+		{
+			event_eat();
+			event_sleep();
+			event_think();
+		}
+		exit(0);
+	}
+	return pid;
+}
diff --git a/philo_three/src/event.c b/philo_three/src/event.c
new file mode 100644
index 0000000..9ff9012
--- /dev/null
+++ b/philo_three/src/event.c
@@ -0,0 +1,61 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   event.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/02/14 21:37:50 by cacharle          #+#    #+#             */
+/*   Updated: 2020/09/30 14:47:49 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "philo_two.h"
+
+void		event_take_fork(t_philo *arg)
+{
+	sem_wait(arg->forks);
+	sem_wait(&arg->conf->mutex_stdout);
+	philo_put(arg->id, EVENT_FORK);
+	sem_post(&arg->conf->mutex_stdout);
+}
+
+void		event_eat(t_philo *arg)
+{
+	int	eat_counter;
+
+	eat_counter = 0;
+	while (eat_counter < arg->conf->meal_num)
+	{
+		sem_wait(&arg->conf->mutex_stdout);
+		philo_put(arg->id, EVENT_EAT);
+		sem_post(&arg->conf->mutex_stdout);
+		usleep(arg->conf->timeout_eat * 1000);
+		eat_counter++;
+	}
+}
+
+void		event_think(t_philo *arg)
+{
+	sem_wait(&arg->conf->mutex_stdout);
+	philo_put(arg->id, EVENT_THINK);
+	sem_post(&arg->conf->mutex_stdout);
+}
+
+void		event_sleep(int id, t_time timeout_sleep, sem_t *sem_stdout, sem_t )
+{
+	sem_wait(sem_stdout);
+	philo_put(id, EVENT_SLEEP);
+	sem_post(sem_stdout);
+	sem_post(arg->forks);
+	sem_post(arg->forks);
+	usleep(arg->conf->timeout_sleep * 1000);
+}
+
+void		event_die(int id, sem_t *sem_stdout, sem_t *sem_dead)
+{
+	sem_wait(sem_stdout);
+	philo_put(arg->id, EVENT_DIE);
+	arg->conf->all_alive = false;
+	sem_post(sem_dead);
+}
diff --git a/philo_three/src/main.c b/philo_three/src/main.c
new file mode 100644
index 0000000..a69766f
--- /dev/null
+++ b/philo_three/src/main.c
@@ -0,0 +1,61 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   main.c                                             :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/02/15 00:45:24 by cacharle          #+#    #+#             */
+/*   Updated: 2020/09/30 14:45:20 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "philo_three.h"
+
+int main(int argc, char **argv)
+{
+	t_philo_args	args;
+	sem_t			*forks;
+	sem_t			*sem_stdout;
+	sem_t			*sem_dead;
+
+	if (!parse_args(&args, argc, argv))
+		return (1);
+
+	sem_unlink(PHILO_SEM_NAME);
+	forks = sem_open(PHILO_SEM_NAME, O_CREAT | O_EXCL, 0700, args.philo_num);
+	if (forks == SEM_FAILED)
+		return (1);
+
+	sem_unlink(PHILO_SEM_STDOUT_NAME);
+	sem_stdout = sem_open(PHILO_SEM_STDOUT_NAME, O_CREAT | O_EXCL, 0700, 1);
+	if (sem_stdout == SEM_FAILED)
+		return (1);
+
+	sem_unlink(PHILO_SEM_ALIVE_NAME);
+	sem_dead = sem_open(PHILO_SEM_ALIVE_NAME, O_CREAT | O_EXCL, 0700, 1);
+	if (sem_dead == SEM_FAILED)
+		return (1);
+
+	pid_t	pid;
+	pid_t	*pids;
+	pids = malloc(sizeof(pid_t) * args.philo_num);
+
+	int i = -1;
+	while (++i < args.philo_num)
+		pids[i] = child_start(&args);
+
+	sem_wait(sem_dead);
+
+	i = -1;
+	while (++i < args.philo_num)
+		kill(pids[i], SIGKILL);
+	free(pids);
+
+	sem_close(forks);
+	sem_close(sem_stdout);
+	sem_unlink(PHILO_SEM_NAME);
+	sem_unlink(PHILO_SEM_STDOUT_NAME);
+	return (0);
+}
+
diff --git a/philo_three/src/philo_three.h b/philo_three/src/philo_three.h
new file mode 100644
index 0000000..97882d0
--- /dev/null
+++ b/philo_three/src/philo_three.h
@@ -0,0 +1,45 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   philo_three.h                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/02/15 00:46:26 by cacharle          #+#    #+#             */
+/*   Updated: 2020/09/30 14:47:49 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#ifndef PHILO_THREE_H
+# define PHILO_THREE_H
+
+# include <unistd.h>
+# include <stdlib.h>
+# include <sys/time.h>
+# include <semaphore.h>
+
+# include "common.h"
+
+# define PHILO_SEM_NAME        "semaphore_philo_three"
+# define PHILO_SEM_STDOUT_NAME "semaphore_philo_three_stdout"
+# define PHILO_SEM_ALIVE_NAME  "semaphore_philo_three_alive"
+
+typedef struct
+{
+	long int		philo_num;
+	t_time 			timeout_death;
+	t_time			timeout_eat;
+	t_time			timeout_sleep;
+	long int		meal_num;
+
+}	t_philo_conf;
+
+pid_t	child_start(t_philo_args *arg);
+
+void	event_take_fork(t_philo *arg);
+void	event_eat(t_philo *arg);
+void	event_think(t_philo *arg);
+void	event_sleep(t_philo *arg);
+void	event_die(t_philo *arg);
+
+#endif