SystemInfo = object
  u1: uint32
  dwPageSize: uint32
  lpMinimumApplicationAddress: pointer
  lpMaximumApplicationAddress: pointer
  dwActiveProcessorMask: ptr uint32
  dwNumberOfProcessors*: uint32
  dwProcessorType: uint32
  dwAllocationGranularity*: uint32
  wProcessorLevel: uint16
  wProcessorRevision: uint16

proc getSystemInfo(lpSystemInfo: ptr SystemInfo) {.stdcall, dynlib: "kernel32",
    importc: "GetSystemInfo", ...raises: [], tags: [].}