sem = (msg_sem_t) (long) (*env)->GetLongField(env, obj, jsyncro_field_Semaphore_bind);
msg_error_t res = MSG_sem_acquire_timeout(sem, (double) timeout);
sem = (msg_sem_t) (long) (*env)->GetLongField(env, obj, jsyncro_field_Semaphore_bind);
msg_error_t res = MSG_sem_acquire_timeout(sem, (double) timeout);