47 struct UserIo {  struct
56     UserIo &operator=(const UserIo &other) {  argument
67     UserIo operator-(const UserIo &other) const {
68         UserIo r;  argument
79     UserIo operator+(const UserIo &other) const {
80         UserIo r;  argument
135     std::unordered_map<uint32_t, UserIo> mPrevious;
136     UserIo mTotal;
137     UserIo mWriteTop[IO_TOP_MAX];
138     UserIo mReadTop[IO_TOP_MAX];
143     std::unordered_map<uint32_t, UserIo> calcIncrement(
144         const std::unordered_map<uint32_t, UserIo> &data);
145     void updateTopWrite(UserIo usage);
146     void updateTopRead(UserIo usage);
154     void calcAll(std::unordered_map<uint32_t, UserIo> &&data);