RH_HOLD_INSTANCE
#define HANDLE_HOLD_INSTANCE(h) HOLD_HANDLE((h), RH_HOLD_INSTANCE, rh_instance)
#define HANDLE_RELE_INSTANCE(h) RELE_HANDLE((h), RH_HOLD_INSTANCE)
held = RH_HOLD_INSTANCE;
held = RH_HOLD_INSTANCE;
RH_HOLD_INSTANCE | RH_HOLD_PG | RH_HOLD_PROPERTY;