v2ray-core/common/signal/semaphore.go

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318 B
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2017-02-13 22:29:34 +00:00
package signal
type Semaphore struct {
token chan bool
}
func NewSemaphore(n int) *Semaphore {
s := &Semaphore{
token: make(chan bool, n),
}
for i := 0; i < n; i++ {
s.token <- true
}
return s
}
func (s *Semaphore) Wait() <-chan bool {
return s.token
}
func (s *Semaphore) Signal() {
s.token <- true
}