typedef struct _ALPC_COMPLETION_LIST_STATE                                      // 1 / 1 elements; 0x0008 / 0x0008 Bytes
{
    union                                                                       // 2 / 2 elements; 0x0008 / 0x0008 Bytes
    {
        struct                                                                  // 3 / 3 elements; 0x0008 / 0x0008 Bytes
        {
            UINT64              Head                                       :24; // 0x0000 / 0x0000; Bits:  0 - 23
            UINT64              Tail                                       :24; // 0x0000 / 0x0000; Bits: 24 - 47
            UINT64              ActiveThreadCount                          :16; // 0x0000 / 0x0000; Bits: 48 - 63
        } s1;                                                                   // 0x0000 / 0x0000; 0x0008 / 0x0008 Bytes
        INT64                   Value;                                          // 0x0000 / 0x0000; 0x0008 / 0x0008 Bytes
    } u1;                                                                       // 0x0000 / 0x0000; 0x0008 / 0x0008 Bytes
} ALPC_COMPLETION_LIST_STATE, * PALPC_COMPLETION_LIST_STATE;

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