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24 lines
342 B
Go
24 lines
342 B
Go
package signal
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type Semaphore struct {
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token chan struct{}
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}
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func NewSemaphore(n int) *Semaphore {
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s := &Semaphore{
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token: make(chan struct{}, n),
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}
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for i := 0; i < n; i++ {
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s.token <- struct{}{}
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}
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return s
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}
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func (s *Semaphore) Wait() <-chan struct{} {
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return s.token
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}
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func (s *Semaphore) Signal() {
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s.token <- struct{}{}
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}
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