97     SignalWrap* wrap;  in Start()  local
98     ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder());  in Start()
99     Environment* env = wrap->env();  in Start()
113         &wrap->handle_,  in Start()
115           SignalWrap* wrap = ContainerOf(&SignalWrap::handle_, handle);  in Start()  local
116           Environment* env = wrap->env();  in Start()
120           wrap->MakeCallback(env->onsignal_string(), 1, &arg);  in Start()
125       CHECK(!wrap->active_);  in Start()
126       wrap->active_ = true;  in Start()
135     SignalWrap* wrap;  in Stop()  local
136     ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder());  in Stop()
138     if (wrap->active_)  {  in Stop()
139       wrap->active_ = false;  in Stop()
140       DecreaseSignalHandlerCount(wrap->handle_.signum);  in Stop()
143     int err = uv_signal_stop(&wrap->handle_);  in Stop()