#define stat_ev_ctx_push(key) stat_ev_ctx_push_fmt((key), "X", NULL)
#define stat_ev_dbl(name, val) stat_ev_emit((name), (val))
#define stat_ev_ctx_push(key) stat_ev_ctx_push_fmt((key), "X", NULL)
#define stat_ev_dbl(name, val) stat_ev_emit((name), (val))