lbry.go/stopOnce/stopOnce.go

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package stopOnce
import "sync"
type Stopper struct {
ch chan struct{}
once sync.Once
}
func New() *Stopper {
s := Stopper{}
s.ch = make(chan struct{})
return &s
}
func (s Stopper) Chan() <-chan struct{} {
return s.ch
}
func (s Stopper) Stop() {
s.once.Do(func() {
close(s.ch)
})
}