internal

Documentation

Index

• func CastInt(v interface{}) int64
• func CastIntPointer(kind reflect.Kind, ptr unsafe.Pointer) int64
• func NextPowerOfTwo(x uint) uint
• func UnpackSlice(slice interface{}) unsafeheader.Slice
• type EmptyInterface
  • func EFaceOf(ep *interface{}) *EmptyInterface

Functions

func CastInt

func CastInt(v interface{}) int64

CastInt returns an integer v's value as int64. v must be an integer, else it panics.

func CastIntPointer

func CastIntPointer(kind reflect.Kind, ptr unsafe.Pointer) int64

CastIntPointer returns ptr's value as int64, the underlying value is cast to int64 using unsafe tricks according kind.

If ptr is not pointed to an integer or kind does not match ptr, the behavior is undefined, it may panic or return incorrect value.

func NextPowerOfTwo

func NextPowerOfTwo(x uint) uint

func UnpackSlice

func UnpackSlice(slice interface{}) unsafeheader.Slice

UnpackSlice unpacks the given slice interface{} to unsafeheader.Slice.

Types

type EmptyInterface

type EmptyInterface struct {
	RType unsafe.Pointer // *rtype
	Word  unsafe.Pointer
}

EmptyInterface is the header for an interface{} value. It's a copy type of runtime.eface.

func EFaceOf

func EFaceOf(ep *interface{}) *EmptyInterface

EFaceOf casts the empty interface{} pointer to an EmptyInterface pointer.