kubernetes/staging/src/k8s.io/apiserver/pkg/util/flowcontrol/fairqueuing/promise/promise.go

type promise …

var _ …

// NewWriteOnce makes a new thread-safe WriteOnce.
//
// If `initial` is non-nil then that value is Set at creation time.
//
// If a `Get` is waiting soon after the channel associated with the
// `doneCtx` becomes selectable (which never happens for the nil
// channel) then `Set(doneVal)` effectively happens at that time.
func NewWriteOnce(initial interface{ … }

func (p *promise) Get() interface{ … }

func (p *promise) Set(value interface{ … }