vendor/github.com/fsouza/go-dockerclient/external/github.com/docker/docker/pkg/system/meminfo_windows.go

   1 package system
   2
   3 import (
   4         "syscall"
   5         "unsafe"
   6 )
   7
   8 var (
   9         modkernel32 = syscall.NewLazyDLL("kernel32.dll")
  10
  11         procGlobalMemoryStatusEx = modkernel32.NewProc("GlobalMemoryStatusEx")
  12 )
  13
  14 // https://msdn.microsoft.com/en-us/library/windows/desktop/aa366589(v=vs.85).aspx
  15 // https://msdn.microsoft.com/en-us/library/windows/desktop/aa366770(v=vs.85).aspx
  16 type memorystatusex struct {
  17         dwLength                uint32
  18         dwMemoryLoad            uint32
  19         ullTotalPhys            uint64
  20         ullAvailPhys            uint64
  21         ullTotalPageFile        uint64
  22         ullAvailPageFile        uint64
  23         ullTotalVirtual         uint64
  24         ullAvailVirtual         uint64
  25         ullAvailExtendedVirtual uint64
  26 }
  27
  28 // ReadMemInfo retrieves memory statistics of the host system and returns a
  29 //  MemInfo type.
  30 func ReadMemInfo() (*MemInfo, error) {
  31         msi := &memorystatusex{
  32                 dwLength: 64,
  33         }
  34         r1, _, _ := procGlobalMemoryStatusEx.Call(uintptr(unsafe.Pointer(msi)))
  35         if r1 == 0 {
  36                 return &MemInfo{}, nil
  37         }
  38         return &MemInfo{
  39                 MemTotal:  int64(msi.ullTotalPhys),
  40                 MemFree:   int64(msi.ullAvailPhys),
  41                 SwapTotal: int64(msi.ullTotalPageFile),
  42                 SwapFree:  int64(msi.ullAvailPageFile),
  43         }, nil
  44 }