struct _KALPC_RESERVE// Size=0x18
{
    struct _ALPC_PORT * OwnerPort;// Offset=0x0 Size=0x4
    struct _ALPC_HANDLE_TABLE * HandleTable;// Offset=0x4 Size=0x4
    void * Handle;// Offset=0x8 Size=0x4
    struct _KALPC_MESSAGE * Message;// Offset=0xc Size=0x4
    unsigned long Size;// Offset=0x10 Size=0x4
    long Active;// Offset=0x14 Size=0x4
};