Method registerSignalHandler

src/Connection.cpp:619–641

}

Slot Connection::registerSignalHandler( const char* sender
                                      , const char* objectPath
                                      , const char* interfaceName
                                      , const char* signalName
                                      , sd_bus_message_handler_t callback
                                      , void* userData
                                      , return_slot_t )
{
    sd_bus_slot *slot{};

    auto r = sdbus_->sd_bus_match_signal( bus_.get()
                                        , &slot
                                        , *sender == '\0' ? nullptr : sender
                                        , *objectPath == '\0' ? nullptr : objectPath
                                        , *interfaceName == '\0' ? nullptr : interfaceName
                                        , *signalName == '\0' ? nullptr : signalName
                                        , callback
                                        , userData );

    SDBUS_THROW_ERROR_IF(r < 0, "Failed to register signal handler", -r);

    return {slot, [this](void *slot){ sdbus_->sd_bus_slot_unref(static_cast<sd_bus_slot*>(slot)); }};
}

sd_bus_message* Connection::incrementMessageRefCount(sd_bus_message* sdbusMsg)
{