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

#define max 6

void handler_sigusr1(int sig) {
  printf("PID %d a reçu un SIGUSR1 : %d\n", getpid(), sig);
}

void handler_sigusr2(int sig) {
  printf("PID %d a reçu un SIGUSR2 : %d\n", getpid(), sig);
  exit(2);
}



void * fn_thread (void * n) {

    // Masque tous les signaux sauf SIGUSR1
    sigset_t ens_signal;
    sigfillset(&ens_signal);
    sigdelset(&ens_signal,SIGUSR1);
    sigprocmask(SIG_SETMASK, &ens_signal,NULL);

    while (1){
        printf("THREAD up and running.\n");
        sleep(1);
    }
    pthread_exit(0);
}


int main () {
    printf("Entry.\n");

    // Configuration des signaux
    struct sigaction action;
    struct sigaction action2;
    action.sa_handler = handler_sigusr1;
    action2.sa_handler = handler_sigusr2;

    if (sigaction(SIGUSR1, &action, NULL) || sigaction(SIGUSR2, &action2, NULL)) {
        printf("Erreur handler (SIGUSR1).\n");
        exit(-1);
    }

    // Création du thread
    pthread_t p1;
    pthread_create (& p1, NULL, fn_thread, NULL);

    // Masque tous les signaux sauf SIGUSR2
    sigset_t ens_signal;
    sigfillset(&ens_signal);
    sigdelset(&ens_signal,SIGUSR2);
    sigprocmask(SIG_SETMASK, &ens_signal,NULL);

    while (1){
        printf("MAIN up and running (pid: %d).\n", getpid());
        sleep(1);
    }

    return 0;
}