typedef union _KWAIT_STATUS_REGISTER
{
    unsigned char Flags;
    struct
    {
        unsigned char State : 2;
        unsigned char Affinity : 1;
        unsigned char Priority : 1;
        unsigned char Apc : 1;
        unsigned char UserApc : 1;
        unsigned char Alert : 1;
        unsigned char Unused : 1;
    };
} KWAIT_STATUS_REGISTER, *PKWAIT_STATUS_REGISTER;