add: if (pthread_create( &print_th,  0, &print_worker, 0)!=0){ LOG(L_ERR,"ERROR:mod_init: cannot create worker thread\n"); return -1; }
context: int mod_init(){	DBG("print module : initializing...\n");	DBG("print module : foo=%d, bar=%s\n", foo, bar);	return 0;}