semaphore

package module

v0.0.0-...-ef89761 Latest Latest Go to latest Published: Jun 29, 2014 License: BSD-3-Clause Imports: 0 Imported by: 2

Details

A Go semaphore primitive

A simple semaphore primitive

Usage:

sem := New(3)
for i := 0; i < 10; i++ {
	sem.Wait()
	go func() {
		time.Sleep(time.Second)
		sem.Signal()
	}()
}

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type Semaphore chan struct{}

func New(size int) Semaphore

New returns an instance of a `Semaphore`:

sem := New(10)

func (s Semaphore) Signal()

Increments the `Semaphore` by 1

func (s Semaphore) Wait()

Decrements the `Semaphore` by 1