splitphilos working on 1 5fork bug and death

.vscode/launch.json

@@ -0,0 +1,33 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Debug philo",
+            "type": "cppdbg",
+            "request": "launch",
+            "program": "${workspaceFolder}/philo/philo",
+            "args": [
+                "5", "800", "200", "200", "7"
+            ],
+            "stopAtEntry": false,
+            "cwd": "${workspaceFolder}/philo",
+            "environment": [],
+            "externalConsole": false,
+            "MIMode": "gdb",
+            "setupCommands": [
+                {
+                    "description": "Enable pretty-printing for gdb",
+                    "text": "-enable-pretty-printing",
+                    "ignoreFailures": true
+                }
+            ],
+            "preLaunchTask": "build philo",
+            "miDebuggerPath": "/usr/bin/gdb",
+            "logging": {
+                "moduleLoad": false,
+                "trace": false
+            },
+            "internalConsoleOptions": "openOnSessionStart"
+        }
+    ]
+}

.vscode/tasks.json

@@ -0,0 +1,20 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build philo",
+            "type": "shell",
+            "command": "make",
+            "args": [
+                "-C",
+                "philo"
+            ],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            },
+            "problemMatcher": ["$gcc"],
+            "detail": "Build the philo project using the Makefile"
+        }
+    ]
+}

philo/Makefile

@@ -14,12 +14,10 @@ NAME = philo
 
 SRC_PATH = src
 INC_PATH = inc
-
 OBJ_PATH = obj
 
 VPATH = src:src/utils
 SOURCES = $(shell basename -a $(shell find $(SRC_PATH) -type f -name "*.c"))
-
 OBJECTS = $(addprefix $(OBJ_PATH)/, $(SOURCES:.c=.o))
 DEPENDS = ${OBJECTS:.o=.d}
 
@@ -27,7 +25,7 @@ CC = cc
 RM = rm -rf
 
 INCLUDES = -I./$(INC_PATH)
-CFLAGS = -Wall -Wextra -Werror -MMD
+CFLAGS = -Wall -Wextra -Werror -MMD -g
 
 UNAME_S	:= $(shell uname -s)
 ifeq ($(UNAME_S),Linux)

philo/inc/philo.h

@@ -12,6 +12,8 @@
 # define SUCCESS 1
 # define FAILURE 0
 
+# define START_DELAY 500
+
 # define ERROR_USAGE "Usage: ./philo number_of_philosophers time_to_die " \
     "time_to_eat time_to_sleep [number_of_times_each_philosopher_must_eat]\n"
 # define ERROR_MUTEX "Can not create mutex"
@@ -25,10 +27,10 @@ typedef struct s_rules
     int             time_to_eat;
     int             time_to_sleep;
     int             n_must_eat;
-    int             death;
+    int             finished;
     int             start_time;
     pthread_mutex_t *print_lock;
-    pthread_mutex_t *death_lock;
+    pthread_mutex_t *finished_lock;
     pthread_mutex_t *forks;
     struct s_philo         *philos;
 
@@ -64,10 +66,9 @@ void print_status(t_philo *philo, char *status);
 void *philo_routine(void *philo);
 int join_threads(t_rules *rules);
 void print_rules(t_rules *rules);
-int check_alive(t_philo *philo);
-
-
-
-
+int check_death(t_philo *philo);
+void philo_die(t_philo *philo);
+int philo_died_while_sleeping(t_philo *philo, int time);
+int philo_eat(t_philo *philo);
 
 #endif

philo/src/check_alive.c

@@ -1,17 +1,7 @@
 #include "philo.h"
 
-int check_alive(t_philo *philo)
+int check_death(t_philo *philo)
 {
-	if (get_time() - philo->last_meal > philo->rules->time_to_die)
-	{
-		print_status(philo, "died");
-		philo->death = 1;
-		pthread_mutex_lock(philo->rules->death_lock);
-		philo->rules->death = 1;
-		pthread_mutex_unlock(philo->rules->death_lock);
-		pthread_mutex_unlock(philo->l_fork);
-		pthread_mutex_unlock(philo->r_fork);
-		return (FAILURE);
-	}
-	return (SUCCESS);
-}
+	return (get_time() - philo->last_meal >= philo->rules->time_to_die);
+}
+

philo/src/create_mutexes.c

@@ -6,7 +6,7 @@ int	create_mutexes(t_rules *rules)
 
 	i = 0;
 	printf("creating mutexes\n");
-	if (pthread_mutex_init(rules->death_lock, NULL))
+	if (pthread_mutex_init(rules->finished_lock, NULL))
 		return(printf("death mutex created"), FAILURE);
 	if (pthread_mutex_init(rules->print_lock, NULL))
 		return(printf("print mutex created"), FAILURE);

philo/src/create_philos.c

@@ -18,7 +18,7 @@ int	create_philos(t_rules *rules)
 		philo->death = 0;
 		philo->pid = 0;
 		philo->rules = rules;
-		philo->last_meal = get_time();
+		philo->last_meal = get_time() + START_DELAY;
 		i++;
 	}
 	return (SUCCESS);

philo/src/destroy_mutexes.c

@@ -5,7 +5,7 @@ int	destroy_mutexes(t_rules *rules)
 	int	i;
 
 	i = 0;
-	if (pthread_mutex_destroy(rules->death_lock))
+	if (pthread_mutex_destroy(rules->finished_lock))
 		return(FAILURE);
 	if (pthread_mutex_destroy(rules->print_lock))
 		return(FAILURE);

philo/src/free_philos.c

@@ -5,5 +5,5 @@ void free_philos(t_rules *rules)
 	free(rules->philos);
 	free(rules->forks);
 	free(rules->print_lock);
-	free(rules->death_lock);
+	free(rules->finished_lock);
 }	

philo/src/main.c

@@ -13,13 +13,13 @@ int main(int argc, char *argv[])
 	if (FAILURE == create_mutexes(&rules))
 		return (printf(ERROR_MUTEX), EXIT_FAILURE);
 	printf("mutexes created\n");
-	rules.start_time = get_time();
+	rules.start_time = get_time() + START_DELAY;
 	if (FAILURE == create_threads(&rules))
 		return (printf(ERROR_THREADS), EXIT_FAILURE);	
 	printf("threads created\n");
 	if (FAILURE == join_threads(&rules))
 		return (printf(ERROR_THREADS), EXIT_FAILURE);
-
+	printf("threads joined\n");
 	if (FAILURE == destroy_mutexes(&rules))
 		return (printf(ERROR_MUTEX), EXIT_FAILURE);
 	printf("mutexes destroyed\n");

philo/src/monitor_death.c

@@ -1,12 +0,0 @@
-#include "philo.h"
-
-void *monitor_death(void *arg)
-{
-    int     i;
-    t_rules *rules;
-
-    rules = (t_rules *)    i = 0;
-    while (i < rules->n_philos)
-        if (rules->philos[i].last_meal - get_time() < rules->time_to_die)
-
-}

philo/src/parse_arguments.c

@@ -17,8 +17,8 @@ int parse_arguments(int argc,char *argv[], t_rules *rules)
     if (argc == 6 && !ph_atoi(argv[5], &rules->n_must_eat))
 		return (FAILURE);
     rules->print_lock = malloc(sizeof(pthread_mutex_t));
-	rules->death_lock = malloc(sizeof(pthread_mutex_t));
-	if (!rules->print_lock || !rules->death_lock)
+	rules->finished_lock = malloc(sizeof(pthread_mutex_t));
+	if (!rules->print_lock || !rules->finished_lock)
 		return (FAILURE);
 	rules->forks = malloc(rules->n_philos * sizeof(pthread_mutex_t));
 	if (!rules->forks)

philo/src/philo_routine.c

@@ -1,36 +1,86 @@
 #include "philo.h"
+void set_finished(t_rules *rules)
+{
+	pthread_mutex_lock(rules->finished_lock);
+	rules->finished = 1;
+	pthread_mutex_unlock(rules->finished_lock);
+}
+
+int get_finished(t_rules *rules)
+{
+	int finished;
+
+	pthread_mutex_lock(rules->finished_lock);
+	finished = rules->finished;
+	pthread_mutex_unlock(rules->finished_lock);
+	return (finished);
+}
+void philo_die(t_philo *philo)
+{
+	print_status(philo, "died 💀");
+	philo->death = 1;
+	set_finished(philo->rules);
+	pthread_mutex_unlock(philo->l_fork);
+	pthread_mutex_unlock(philo->r_fork);
+}
+
+int philo_died_while_sleeping(t_philo *philo, int time)
+{
+	const int	start = get_time();
+	while(get_time() - start < time)
+	{
+		if (philo->last_meal - get_time() >= philo->rules->time_to_die)
+			return (SUCCESS);
+		usleep(500);
+	}
+	return (FAILURE);
+}
+int philo_eat(t_philo *philo)
+{
+	if (philo->id % 2 == 1)
+	{
+		pthread_mutex_lock(philo->r_fork);
+		print_status(philo, "has taken a fork 🍴");
+	}
+	pthread_mutex_lock(philo->l_fork);
+	print_status(philo, "has taken a fork 🍴");
+	if (philo->id % 2 == 0)
+	{
+		pthread_mutex_lock(philo->r_fork);
+		print_status(philo, "has taken a fork 🍴");
+	}	
+	if (check_death(philo))
+		return (philo_die(philo), FAILURE);
+	print_status(philo, "is eating 🍝");
+	philo->last_meal = get_time();
+	philo->n_eat++;
+	return (SUCCESS);
+}
 
 void	*philo_routine(void *arg)
 {
 	t_philo	*philo;
 
 	philo = (t_philo *)arg;
-	while (!philo->death && !philo->rules->death 
+
+	while (get_time() < philo->rules->start_time)
+		usleep(50);
+	while (!philo->death && !philo->rules->finished 
 		&& (philo->n_eat < philo->rules->n_must_eat || philo->rules->n_must_eat == -1))
 	{
-		if (philo->id % 2 == 1)
-		{
-			pthread_mutex_lock(philo->r_fork);
-			print_status(philo, "has taken a fork");
-		}
-		pthread_mutex_lock(philo->l_fork);
-		print_status(philo, "has taken a fork");
-		if (philo->id % 2 == 0)
-		{
-			pthread_mutex_lock(philo->r_fork);
-			print_status(philo, "has taken a fork");
-		}
-		if (!check_alive(philo))
-			break ;
-		print_status(philo, "is eating");
-		philo->last_meal = get_time();
-		philo->n_eat++;
-		usleep(philo->rules->time_to_eat * 1000);
+
+		if (check_death(philo))
+			return (philo_die(philo), NULL);
+		if (!philo_eat(philo))
+			return (NULL);
+		if (philo_died_while_sleeping(philo, philo->rules->time_to_eat))
+			return (philo_die(philo), NULL);
 		pthread_mutex_unlock(philo->l_fork);
 		pthread_mutex_unlock(philo->r_fork);
-		print_status(philo, "is sleeping");
-		usleep(philo->rules->time_to_sleep * 1000);
-		print_status(philo, "is thinking");
+		print_status(philo, "is sleeping 💤");
+		if (philo_died_while_sleeping(philo, philo->rules->time_to_sleep))
+			return (philo_die(philo), NULL);
+		print_status(philo, "is thinking 💭");
 	}
 	return (NULL);
 }