1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* main.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: cacharle <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/02/15 00:45:24 by cacharle #+# #+# */
/* Updated: 2021/01/14 10:54:56 by cacharle ### ########.fr */
/* */
/* ************************************************************************** */
#include "philo_three.h"
static int st_destroy(pid_t *pids, long int philo_num)
{
long int i;
if (pids != NULL)
{
i = -1;
while (++i < philo_num)
kill(pids[i], SIGKILL);
free(pids);
}
sem_unlink(PHILO_SEM_NAME);
sem_unlink(PHILO_SEM_STDOUT_NAME);
sem_unlink(PHILO_SEM_FINISH_NAME);
sem_unlink(PHILO_SEM_MEAL_NUM_NAME);
sem_unlink(PHILO_SEM_START_NAME);
sem_unlink(PHILO_SEM_GRAB_NAME);
return (1);
}
static int st_setup(t_philo_conf *conf, pid_t **pids)
{
conf->forks = SEM_FAILED;
conf->sem_stdout = SEM_FAILED;
conf->sem_finish = SEM_FAILED;
conf->sem_meal_num = SEM_FAILED;
conf->sem_start = SEM_FAILED;
conf->sem_grab = SEM_FAILED;
*pids = NULL;
if (!h_sem_create(PHILO_SEM_NAME, conf->philo_num, &conf->forks) ||
!h_sem_create(PHILO_SEM_STDOUT_NAME, 1, &conf->sem_stdout) ||
!h_sem_create(PHILO_SEM_FINISH_NAME, 1, &conf->sem_finish) ||
!h_sem_create(PHILO_SEM_MEAL_NUM_NAME,
conf->philo_num, &conf->sem_meal_num) ||
!h_sem_create(PHILO_SEM_START_NAME,
conf->philo_num, &conf->sem_start) ||
!h_sem_create(PHILO_SEM_GRAB_NAME, 1, &conf->sem_grab) ||
(*pids = malloc(sizeof(pid_t) * conf->philo_num)) == NULL)
return (1);
return (0);
}
static int st_start(t_philo_conf *conf, pid_t *pids, t_time initial_time)
{
t_philo philo;
long int i;
i = -1;
while (++i < conf->philo_num)
sem_wait(conf->sem_start);
i = -1;
while (++i < conf->philo_num)
{
philo.conf = conf;
philo.id = i + 1;
philo.initial_time = initial_time;
if ((pids[i] = child_start(&philo)) == -1)
return (1);
}
i = -1;
while (++i < conf->philo_num)
sem_post(conf->sem_start);
return (0);
}
static void *st_routine_meal_num(t_philo_conf *conf)
{
long int i;
i = -1;
while (++i < conf->philo_num)
sem_wait(conf->sem_meal_num);
i = -1;
while (++i < conf->philo_num)
sem_wait(conf->sem_meal_num);
sem_wait(conf->sem_stdout);
sem_post(conf->sem_finish);
return (NULL);
}
int main(int argc, char **argv)
{
t_philo_conf conf;
pid_t *pids;
pthread_t thread_meal_num;
if (!parse_args((t_philo_args*)&conf, argc, argv))
return (1);
if (conf.philo_num == 0 || conf.meal_num == 0)
return (0);
if (st_setup(&conf, &pids) != 0 || st_start(&conf, pids, h_time_now()) != 0)
return (st_destroy(pids, conf.philo_num));
if (conf.meal_num != -1)
{
if (pthread_create(&thread_meal_num,
NULL, (t_routine)st_routine_meal_num, &conf) != 0)
return (st_destroy(pids, conf.philo_num));
pthread_detach(thread_meal_num);
}
sem_wait(conf.sem_finish);
sem_wait(conf.sem_finish);
st_destroy(pids, conf.philo_num);
return (0);
}
|
