github.com/akerouanton/docker@v1.11.0-rc3/pkg/platform/architecture_windows.go (about)

     1  package platform
     2  
     3  import (
     4  	"fmt"
     5  	"syscall"
     6  	"unsafe"
     7  )
     8  
     9  var (
    10  	modkernel32       = syscall.NewLazyDLL("kernel32.dll")
    11  	procGetSystemInfo = modkernel32.NewProc("GetSystemInfo")
    12  )
    13  
    14  // see http://msdn.microsoft.com/en-us/library/windows/desktop/ms724958(v=vs.85).aspx
    15  type systeminfo struct {
    16  	wProcessorArchitecture      uint16
    17  	wReserved                   uint16
    18  	dwPageSize                  uint32
    19  	lpMinimumApplicationAddress uintptr
    20  	lpMaximumApplicationAddress uintptr
    21  	dwActiveProcessorMask       uintptr
    22  	dwNumberOfProcessors        uint32
    23  	dwProcessorType             uint32
    24  	dwAllocationGranularity     uint32
    25  	wProcessorLevel             uint16
    26  	wProcessorRevision          uint16
    27  }
    28  
    29  // Constants
    30  const (
    31  	ProcessorArchitecture64   = 9 // PROCESSOR_ARCHITECTURE_AMD64
    32  	ProcessorArchitectureIA64 = 6 // PROCESSOR_ARCHITECTURE_IA64
    33  	ProcessorArchitecture32   = 0 // PROCESSOR_ARCHITECTURE_INTEL
    34  	ProcessorArchitectureArm  = 5 // PROCESSOR_ARCHITECTURE_ARM
    35  )
    36  
    37  var sysinfo systeminfo
    38  
    39  // runtimeArchitecture get the name of the current architecture (x86, x86_64, …)
    40  func runtimeArchitecture() (string, error) {
    41  	syscall.Syscall(procGetSystemInfo.Addr(), 1, uintptr(unsafe.Pointer(&sysinfo)), 0, 0)
    42  	switch sysinfo.wProcessorArchitecture {
    43  	case ProcessorArchitecture64, ProcessorArchitectureIA64:
    44  		return "x86_64", nil
    45  	case ProcessorArchitecture32:
    46  		return "i686", nil
    47  	case ProcessorArchitectureArm:
    48  		return "arm", nil
    49  	default:
    50  		return "", fmt.Errorf("Unknown processor architecture")
    51  	}
    52  }