Method IsOpen

util/system/filemap.cpp:209–215

    }

    inline bool IsOpen() const noexcept {
        return File_.IsOpen()
#if defined(_win_)
               && Mapping_ != nullptr
#endif
            ;
    }

    inline bool IsWritable() const noexcept {
        return (Mode_ & oRdWr || Mode_ & oCopyOnWr);