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updated death monitor

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This commit is contained in:
Rui Ribeiro 2025-10-09 21:24:47 +01:00
parent 9349239c84
commit 69d8209b12
1 changed files with 40 additions and 10 deletions
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50
rendu/death_monitor.c
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@ -6,7 +6,7 @@
/* By: ruiferna <ruiferna@student.42porto.com> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/10/09 20:16:37 by ruiferna #+# #+# */
/* Updated: 2025/10/09 20:47:14 by ruiferna ### ########.fr */
/* Updated: 2025/10/09 21:23:37 by ruiferna ### ########.fr */
/* */
/* ************************************************************************** */
@ -14,16 +14,38 @@
#define WORKERS 4
// typedef struct {
// pthread_mutex_t mutex;
// struct timeval last_activity_time;
// int alive; // 1 if alive, 0 if dead
// } WorkerState;
static pthread_mutex_t random_mutex = PTHREAD_MUTEX_INITIALIZER;
int get_random_sleep_duration() {
// Seed variable to ensure unique seed per thread
unsigned int seed;
// Acquire mutex to ensure thread-safe random number generation
pthread_mutex_lock(&random_mutex);
// Use thread-safe method to generate seed
seed = time(NULL) ^ pthread_self();
// Generate random number between 1000-4000 milliseconds
int duration = 1000 + rand_r(&seed) % 3001;
// Release mutex
pthread_mutex_unlock(&random_mutex);
return duration;
}
typedef struct {
pthread_mutex_t mutex;
struct timeval last_activity_time;
int alive; // 1 if alive, 0 if dead
} WorkerState;
typedef struct s_shared
{
int id;
int is_dead;
pthread_t workers[WORKERS];
long long last_updated[WORKERS];
pthread_mutex_t workers_mutexes[WORKERS];
@ -35,17 +57,24 @@ void *worker_routine(void *arg)
{
t_shared *shared;
int worker_id;
int sleep_time;
shared = (t_shared *) arg;
pthread_mutex_lock(&shared->mutex_id);
shared->id += 1;
worker_id = shared->id;
pthread_mutex_unlock(&shared->mutex_id);
pthread_mutex_lock(&shared->workers_mutexes[worker_id]);
shared->last_updated[worker_id] = get_current_time();
pthread_mutex_lock(&shared->workers_mutexes[worker_id]);
while (1)
{
pthread_mutex_lock(&shared->workers_mutexes[worker_id]);
shared->last_updated[worker_id] = get_current_time();
pthread_mutex_unlock(&shared->workers_mutexes[worker_id]);
sleep_time = get_random_sleep_duration();
printf("Worker %i will stop for %i seconds.\n", worker_id, (int)(sleep_time / 1000));
precise_sleep(sleep_time);
}
return (NULL);
}
int main()
{
@ -53,6 +82,7 @@ int main()
int i;
i = 0;
shared.id = 0;
while (i < WORKERS)
{
pthread_mutex_init(&shared.workers_mutexes[i], NULL);