我类(class)的简化片段:classUpdatingSystem/*whensystemis"unsafe"itmarksthisconditionbyinstantiatinganUpdatingSystemitem.Whilethisitemexistserrorsarehandledinaparticularway.WhentheUpdatingSystemitemgoesoutofscopeerrorhandlingrevertstonormal.*/{private:staticTHREADintupdatingSystemCount_;public:UpdatingSy