limiter

package
v1.4.1 Latest Latest
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Published: Nov 14, 2017 License: MIT Imports: 0 Imported by: 0

Documentation

Overview

Package limiter provides concurrency limiters.

Index

Constants

This section is empty.

Variables

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Functions

This section is empty.

Types

type Fixed

type Fixed chan struct{}

Fixed is a simple channel-based concurrency limiter. It uses a fixed size channel to limit callers from proceeding until there is a value available in the channel. If all are in-use, the caller blocks until one is freed.

func NewFixed

func NewFixed(limit int) Fixed

func (Fixed) Available added in v1.4.0

func (t Fixed) Available() int

Available returns the number of available tokens that may be taken.

func (Fixed) Capacity added in v1.4.0

func (t Fixed) Capacity() int

Capacity returns the number of tokens can be taken.

func (Fixed) Idle added in v1.4.0

func (t Fixed) Idle() bool

Idle returns true if the limiter has all its capacity is available.

func (Fixed) Release

func (t Fixed) Release()

Release releases a token back to the limiter.

func (Fixed) Take

func (t Fixed) Take()

Take attempts to take a token and blocks until one is available.

func (Fixed) TryTake added in v1.4.0

func (t Fixed) TryTake() bool

TryTake attempts to take a token and return true if successful, otherwise returns false.

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