1
0
Fork 0
mirror of https://github.com/moby/moby.git synced 2022-11-09 12:21:53 -05:00
moby--moby/pkg/platform/architecture_windows.go

61 lines
1.8 KiB
Go
Raw Normal View History

package platform // import "github.com/docker/docker/pkg/platform"
import (
"fmt"
"syscall"
"unsafe"
"golang.org/x/sys/windows"
)
var (
modkernel32 = windows.NewLazySystemDLL("kernel32.dll")
procGetSystemInfo = modkernel32.NewProc("GetSystemInfo")
)
// see http://msdn.microsoft.com/en-us/library/windows/desktop/ms724958(v=vs.85).aspx
type systeminfo struct {
wProcessorArchitecture uint16
wReserved uint16
dwPageSize uint32
lpMinimumApplicationAddress uintptr
lpMaximumApplicationAddress uintptr
dwActiveProcessorMask uintptr
dwNumberOfProcessors uint32
dwProcessorType uint32
dwAllocationGranularity uint32
wProcessorLevel uint16
wProcessorRevision uint16
}
// Constants
const (
ProcessorArchitecture64 = 9 // PROCESSOR_ARCHITECTURE_AMD64
ProcessorArchitectureIA64 = 6 // PROCESSOR_ARCHITECTURE_IA64
ProcessorArchitecture32 = 0 // PROCESSOR_ARCHITECTURE_INTEL
ProcessorArchitectureArm = 5 // PROCESSOR_ARCHITECTURE_ARM
)
// runtimeArchitecture gets the name of the current architecture (x86, x86_64, …)
func runtimeArchitecture() (string, error) {
var sysinfo systeminfo
syscall.Syscall(procGetSystemInfo.Addr(), 1, uintptr(unsafe.Pointer(&sysinfo)), 0, 0)
switch sysinfo.wProcessorArchitecture {
case ProcessorArchitecture64, ProcessorArchitectureIA64:
return "x86_64", nil
case ProcessorArchitecture32:
return "i686", nil
case ProcessorArchitectureArm:
return "arm", nil
default:
return "", fmt.Errorf("Unknown processor architecture")
}
}
// NumProcs returns the number of processors on the system
func NumProcs() uint32 {
var sysinfo systeminfo
syscall.Syscall(procGetSystemInfo.Addr(), 1, uintptr(unsafe.Pointer(&sysinfo)), 0, 0)
return sysinfo.dwNumberOfProcessors
}