Added common files

7 files changed, 320 insertions, 0 deletions

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..3ebc3ac
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,27 @@
+# **************************************************************************** #
+#                                                                              #
+#                                                         :::      ::::::::    #
+#    Makefile                                           :+:      :+:    :+:    #
+#                                                     +:+ +:+         +:+      #
+#    By: cacharle <marvin@42.fr>                    +#+  +:+       +#+         #
+#                                                 +#+#+#+#+#+   +#+            #
+#    Created: 2020/02/09 03:31:28 by cacharle          #+#    #+#              #
+#    Updated: 2020/02/09 03:32:56 by cacharle         ###   ########.fr        #
+#                                                                              #
+# **************************************************************************** #
+
+MAKE = make
+MAKE_ARGS = -no-print-child
+
+PHILO_ONE_DIR = philo_one
+PHILO_TWO_DIR = philo_two
+PHILO_THREE_DIR = philo_three
+
+philo_one:
+	$(MAKE) $(MAKE_ARGS) $(PHILO_ONE_DIR)
+
+philo_two:
+	$(MAKE) $(MAKE_ARGS) $(PHILO_TWO_DIR)
+
+philo_two:
+	$(MAKE) $(MAKE_ARGS) $(PHILO_THREE_DIR)
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..7b9d21d
--- /dev/null
+++ b/README.md
@@ -0,0 +1,3 @@
+# philosophers
+
+philosophers project of school 42
diff --git a/common/common.c b/common/common.c
new file mode 100644
index 0000000..be35e69
--- /dev/null
+++ b/common/common.c
@@ -0,0 +1,56 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   common.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/02/08 23:12:55 by cacharle          #+#    #+#             */
+/*   Updated: 2020/02/09 01:36:40 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "common.h"
+
+t_bool				parse_args(t_philo_args *philo_args, int argc, char **argv)
+{
+	if (philo_args == NULL)
+		return (FALSE);
+	if (argc != 5 && argc != 6)
+		return (FALSE);
+	if ((philo_args->philo_num = h_strtoposint(argv[1])) == -1 ||
+		(philo_args->timeout_death = h_strtoposint(argv[2])) == -1 ||
+		(philo_args->timeout_eat = h_strtoposint(argv[3])) == -1 ||
+		(philo_args->timeout_sleep = h_strtoposint(argv[4])) == -1)
+		return (FALSE);
+	if (argc == 6)
+	{
+		if ((philo_args->meal_num = h_strtoposint(argv[5])) == -1)
+			return (FALSE);
+	}
+	else
+		philo_args->meal_num = -1;
+	return (TRUE);
+}
+
+void				philo_put_state_change(t_philo *philo, t_philo_event event)  // not correct for philo3
+{
+	struct timeval	tv;
+
+	if (gettimeofday(&tv, NULL) == -1)
+		return ;
+	h_putnbr(tv.tv_sec);
+	h_putnbr(tv.tv_usec / 1000);
+	h_putchar(' ');
+	h_putnbr(philo->id);
+	if (event == EVENT_FORK)
+		h_putstr(" has taken fork\n");
+	else if (event == EVENT_EATING)
+		h_putstr(" is eating\n");
+	else if (event == EVENT_SLEEPING)
+		h_putstr(" is sleeping\n");
+	else if (event == EVENT_THINKING)
+		h_putstr(" is thinking\n");
+	else if (event == EVENT_DIED)
+		h_putstr(" died\n");
+}
diff --git a/common/common.h b/common/common.h
new file mode 100644
index 0000000..ff371a9
--- /dev/null
+++ b/common/common.h
@@ -0,0 +1,96 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   common.h                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/02/08 22:58:35 by cacharle          #+#    #+#             */
+/*   Updated: 2020/02/09 03:22:56 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#ifndef COMMON_H
+# define COMMON_H
+
+# include <stdlib.h>
+# include <sys/time.h>
+
+# define FALSE 0
+# define TRUE 1
+
+typedef int			t_bool;
+
+typedef enum
+{
+	PSTATE_EATING = 0,
+	PSTATE_SLEEPING,
+	PSTATE_THINKING,
+	PSTATE_NUM
+}	t_philo_state;
+
+typedef enum
+{
+	EVENT_FORK,
+	EVENT_EATING,
+	EVENT_SLEEPING,
+	EVENT_THINKING,
+	EVENT_DIED
+}	t_philo_event;
+
+typedef struct
+{
+	int				id;
+	t_philo_state	state;
+	pthread_t		thread;
+}					t_philo;
+
+typedef struct
+{
+	int				philo_num;
+	int 			timeout_death;
+	int				timeout_eat;
+	int				timeout_sleep;
+	int 			meal_num;
+}					t_philo_args;
+
+typedef void		(*t_philo_routine)(void *arg);
+
+typedef struct
+{
+	t_bool			used;
+	t_philo			*left;
+	t_philo			*right;
+}					t_fork;
+
+/*
+** common.c
+*/
+
+t_bool				parse_args(t_philo_args *philo_args, int argc, char **argv);
+void				philo_put_state_change(t_philo *philo, t_philo_event event);
+
+/*
+** philo.c
+*/
+
+t_philo				*philos_new(int num);
+void				philos_destroy(t_philo *philo);
+
+void				philo_eat(t_philo *philo);
+void				philo_sleep(t_philo *philo);
+void				philo_think(t_philo *philo);
+
+/*
+** helper.c
+*/
+
+int					h_strtoposint(char *s);
+int					h_strlen(char *s);
+void				h_putnbr(unsigned long num);
+void				h_putchar(char c);
+void				h_putstr(char *s);
+void				*h_calloc(int count, int size);
+
+
+#endif
diff --git a/common/helper.c b/common/helper.c
new file mode 100644
index 0000000..4c4b1f1
--- /dev/null
+++ b/common/helper.c
@@ -0,0 +1,72 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   helper.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/02/08 23:22:49 by cacharle          #+#    #+#             */
+/*   Updated: 2020/02/09 02:15:02 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "common.h"
+
+int					h_strtoposint(char *s)
+{
+	int	num;
+
+	if (*s < '0' || *s > '9')
+		return (-1);
+	num = 0;
+	while (*s != '\0' && *s > '0' && *s < '9')
+	{
+		num *= 10;
+		num += *s - '0';
+		s++;
+	}
+	if (*s != '\0')
+		return (-1);
+	return num;
+}
+
+int					h_strlen(char *s)
+{
+	int	counter;
+
+	counter = 0;
+	while (s[counter])
+		counter++;
+	return (counter);
+}
+
+void				h_putnbr(unsigned long num)
+{
+	if (num <= 0)
+		return ;
+	h_putnbr(num / 10);
+	h_putchar(num % 10 - '0');
+}
+
+void				h_putchar(char c)
+{
+	write(STDOUT_FILENO, &c, 1);
+}
+
+void				h_putstr(char *s)
+{
+	write(STDOUT_FILENO, s, h_strlen(s));
+}
+
+void				*h_calloc(int count, int size)
+{
+	int		i;
+	void	*ptr;
+
+	if ((ptr = malloc(count * size)) == NULL)
+		return (NULL);
+	i = count * size;
+	while (i-- > 0)
+		((unsigned char*)ptr)[i] = 0x0;
+	return (ptr);
+}
diff --git a/common/philo.c b/common/philo.c
new file mode 100644
index 0000000..b8d7caf
--- /dev/null
+++ b/common/philo.c
@@ -0,0 +1,66 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   philo.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/02/09 01:54:53 by cacharle          #+#    #+#             */
+/*   Updated: 2020/02/09 03:26:07 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "common.h"
+
+t_philo				*philos_new(int num, t_philo_routine routine)
+{
+	int		i;
+	t_philo	*philos;
+
+	if (num < 0)
+		return (NULL);
+	if ((philos = (t_philo*)h_calloc(num + 1, sizeof(t_philo))) == NULL)
+		return (NULL);
+	i = -1;
+	while (++i < num)
+	{
+		philos[i].id = num + 1;
+		if (pthread_create(&philos[i].thread, NULL, routine, philos + num) != 0)
+		{
+			philos_destroy(philos, i);
+			return (NULL);
+		}
+	}
+	return (philos);
+}
+
+void				philos_destroy(t_philo *philo, int num)
+{
+	if (philo == NULL)
+		return ;
+	while (num-- > 0)
+		pthread_join(philos[num].thread, NULL);
+	free(philos);
+}
+
+void				philo_eat(t_philo *philo)
+{
+	// take forks
+	// lock mutex
+	philo_put_state_change(philo, EVENT_EATING);
+	usleep(philo->timeout_eat * 1000);
+	// drop forks
+	// unlock mutex
+}
+
+void				philo_sleep(t_philo *philo)
+{
+	philo_put_state_change(philo, EVENT_SLEEPING);
+	usleep(philo->timeout_sleep * 1000);
+}
+
+void				philo_think(t_philo *philo)
+{
+	philo_put_state_change(philo, EVENT_THINKING);
+	// search a fork
+}
diff --git a/subject.pdf b/subject.pdf
new file mode 100644
index 0000000..d80790b
--- /dev/null
+++ b/subject.pdf