package system import ( "unsafe" "golang.org/x/sys/windows" ) var ( modkernel32 = windows.NewLazySystemDLL("kernel32.dll") procGlobalMemoryStatusEx = modkernel32.NewProc("GlobalMemoryStatusEx") ) // https://msdn.microsoft.com/en-us/library/windows/desktop/aa366589(v=vs.85).aspx // https://msdn.microsoft.com/en-us/library/windows/desktop/aa366770(v=vs.85).aspx type memorystatusex struct { dwLength uint32 dwMemoryLoad uint32 ullTotalPhys uint64 ullAvailPhys uint64 ullTotalPageFile uint64 ullAvailPageFile uint64 ullTotalVirtual uint64 ullAvailVirtual uint64 ullAvailExtendedVirtual uint64 } // ReadMemInfo retrieves memory statistics of the host system and returns a // MemInfo type. func ReadMemInfo() (*MemInfo, error) { msi := &memorystatusex{ dwLength: 64, } r1, _, _ := procGlobalMemoryStatusEx.Call(uintptr(unsafe.Pointer(msi))) if r1 == 0 { return &MemInfo{}, nil } return &MemInfo{ MemTotal: int64(msi.ullTotalPhys), MemFree: int64(msi.ullAvailPhys), SwapTotal: int64(msi.ullTotalPageFile), SwapFree: int64(msi.ullAvailPageFile), }, nil }