#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <unistd.h>

#define max 6

static pthread_mutex_t  mutex = PTHREAD_MUTEX_INITIALIZER;


void unlock(){
    pthread_mutex_unlock(& mutex);
}


void * fn_thread (void * n) {
    pthread_mutex_lock(& mutex);
    printf("[THREAD] J'ai le mutex.\n");

    for (int i = 0; i < max; ++i){
        printf("[THREAD] tid: %ld\n", pthread_self());
        sleep(1);
    }

    pthread_mutex_unlock(& mutex);
    
    pthread_exit(0);
}


int main () {
    pthread_t p1;

    for (int i = 0; i < 2; ++i){
        pthread_create (& p1, NULL, fn_thread, NULL);
        pthread_cleanup_push( &unlock, NULL );

        for (int i = 0; i < max/2; ++i){
            printf("[MAIN] pid: %d\n", getpid());
            sleep(1);
        }
        pthread_cancel(p1);
        pthread_cleanup_pop(1);
        sleep(1);
    }
    return 0;
}