go/src/runtime/lfstack.go

type lfstack …

func (head *lfstack) push(node *lfnode) { … }

func (head *lfstack) pop() unsafe.Pointer { … }

func (head *lfstack) empty() bool { … }

// lfnodeValidate panics if node is not a valid address for use with
// lfstack.push. This only needs to be called when node is allocated.
func lfnodeValidate(node *lfnode) { … }

func lfstackPack(node *lfnode, cnt uintptr) uint64 { … }

func lfstackUnpack(val uint64) *lfnode { … }