doCallbacks(reorder_callbacks, new Integer(b?1:0), s);
doCallbacks(reorder_callbacks, new Boolean(b), s);
    void reorder_handler(boolean b, ReorderStats s) {        if (b) {            s.usednum_before = getNodeNum();            s.time = System.currentTimeMillis();        } else {            s.time = System.currentTimeMillis() - s.time;            s.usednum_after = getNodeNum();        }        if (reorder_callbacks == null) {            bdd_default_reohandler(b, s);        } else {            doCallbacks(reorder_callbacks, new Integer(b?1:0), s);        }    }