semaphore

package
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Published: Oct 3, 2019 License: Apache-2.0 Imports: 1 Imported by: 0

Documentation

Overview

Package semaphore provides an implementation of a counting semaphore.

Index

Constants

This section is empty.

Variables

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Functions

This section is empty.

Types

type Semaphore

type Semaphore chan struct{}

Semaphore is a buffered channel based implementation of a counting semaphore.

func New

func New(permits int) Semaphore

New creates a Semaphore with the specified number of permits.

func (Semaphore) Acquire

func (s Semaphore) Acquire(ctx context.Context) error

Acquire acquires a permit. This call will block until a permit is available or the provided context is completed.

If the provided context is completed, the method will return the cancellation error.

func (Semaphore) Release

func (s Semaphore) Release()

Release releases a permit.

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