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Andy Pan
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README.md
92
README.md
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@ -1,17 +1,17 @@
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<p align="center">
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<img src="https://raw.githubusercontent.com/panjf2000/logos/master/ants/logo.png"/>
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<b>A goroutine pool in Go</b>
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<img src="https://raw.githubusercontent.com/panjf2000/logos/master/ants/logo.png" />
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<b>A goroutine pool for Go</b>
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<br/><br/>
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<a title="Build Status" target="_blank" href="https://travis-ci.com/panjf2000/ants"><img src="https://img.shields.io/travis/com/panjf2000/ants?style=flat-square&logo=travis"></a>
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<a title="Codecov" target="_blank" href="https://codecov.io/gh/panjf2000/ants"><img src="https://img.shields.io/codecov/c/github/panjf2000/ants?style=flat-square&logo=codecov"></a>
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<a title="Release" target="_blank" href="https://github.com/panjf2000/ants/releases"><img src="https://img.shields.io/github/v/release/panjf2000/ants.svg?color=161823&style=flat-square&logo=smartthings"></a>
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<a title="Tag" target="_blank" href="https://github.com/panjf2000/ants/tags"><img src="https://img.shields.io/github/v/tag/panjf2000/ants?color=%23ff8936&logo=fitbit&style=flat-square"></a>
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<a title="Build Status" target="_blank" href="https://travis-ci.com/panjf2000/ants"><img src="https://img.shields.io/travis/com/panjf2000/ants?style=flat-square&logo=travis" /></a>
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<a title="Codecov" target="_blank" href="https://codecov.io/gh/panjf2000/ants"><img src="https://img.shields.io/codecov/c/github/panjf2000/ants?style=flat-square&logo=codecov" /></a>
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<a title="Release" target="_blank" href="https://github.com/panjf2000/ants/releases"><img src="https://img.shields.io/github/v/release/panjf2000/ants.svg?color=161823&style=flat-square&logo=smartthings" /></a>
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<a title="Tag" target="_blank" href="https://github.com/panjf2000/ants/tags"><img src="https://img.shields.io/github/v/tag/panjf2000/ants?color=%23ff8936&logo=fitbit&style=flat-square" /></a>
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<br/>
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<a title="Chat Room" target="_blank" href="https://gitter.im/ants-pool/ants?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=body_badge"><img src="https://badges.gitter.im/ants-pool/ants.svg"></a>
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<a title="Go Report Card" target="_blank" href="https://goreportcard.com/report/github.com/panjf2000/ants"><img src="https://goreportcard.com/badge/github.com/panjf2000/ants?style=flat-square"></a>
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<a title="Doc for ants" target="_blank" href="https://pkg.go.dev/github.com/panjf2000/ants/v2?tab=doc"><img src="https://img.shields.io/badge/go.dev-doc-007d9c?style=flat-square&logo=read-the-docs"></a>
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<a title="Ants on Sourcegraph" target="_blank" href="https://sourcegraph.com/github.com/panjf2000/ants?badge"><img src="https://sourcegraph.com/github.com/panjf2000/ants/-/badge.svg?style=flat-square"></a>
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<a title="Mentioned in Awesome Go" target="_blank" href="https://github.com/avelino/awesome-go#goroutines"><img src="https://awesome.re/mentioned-badge-flat.svg"></a>
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<a title="Chat Room" target="_blank" href="https://gitter.im/ants-pool/ants?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=body_badge"><img src="https://badges.gitter.im/ants-pool/ants.svg" /></a>
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<a title="Go Report Card" target="_blank" href="https://goreportcard.com/report/github.com/panjf2000/ants"><img src="https://goreportcard.com/badge/github.com/panjf2000/ants?style=flat-square" /></a>
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<a title="Doc for ants" target="_blank" href="https://pkg.go.dev/github.com/panjf2000/ants/v2?tab=doc"><img src="https://img.shields.io/badge/go.dev-doc-007d9c?style=flat-square&logo=read-the-docs" /></a>
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<a title="Ants on Sourcegraph" target="_blank" href="https://sourcegraph.com/github.com/panjf2000/ants?badge"><img src="https://sourcegraph.com/github.com/panjf2000/ants/-/badge.svg?style=flat-square" /></a>
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<a title="Mentioned in Awesome Go" target="_blank" href="https://github.com/avelino/awesome-go#goroutines"><img src="https://awesome.re/mentioned-badge-flat.svg" /></a>
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</p>
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English | [🇨🇳中文](README_ZH.md)
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@ -136,61 +136,6 @@ func main() {
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}
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```
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### Integrate with http server
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```go
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package main
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import (
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"io/ioutil"
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"net/http"
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"github.com/panjf2000/ants/v2"
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)
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type Request struct {
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Param []byte
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Result chan []byte
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}
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func main() {
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pool, _ := ants.NewPoolWithFunc(100000, func(payload interface{}) {
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request, ok := payload.(*Request)
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if !ok {
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return
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}
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reverseParam := func(s []byte) []byte {
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for i, j := 0, len(s)-1; i < j; i, j = i+1, j-1 {
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s[i], s[j] = s[j], s[i]
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}
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return s
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}(request.Param)
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request.Result <- reverseParam
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})
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defer pool.Release()
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http.HandleFunc("/reverse", func(w http.ResponseWriter, r *http.Request) {
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param, err := ioutil.ReadAll(r.Body)
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if err != nil {
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http.Error(w, "request error", http.StatusInternalServerError)
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}
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defer r.Body.Close()
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request := &Request{Param: param, Result: make(chan []byte)}
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// Throttle the requests traffic with ants pool. This process is asynchronous and
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// you can receive a result from the channel defined outside.
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if err := pool.Invoke(request); err != nil {
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http.Error(w, "throttle limit error", http.StatusInternalServerError)
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}
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w.Write(<-request.Result)
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})
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http.ListenAndServe(":8080", nil)
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}
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```
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### Functional options for ants pool
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```go
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@ -199,7 +144,9 @@ type Option func(opts *Options)
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// Options contains all options which will be applied when instantiating a ants pool.
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type Options struct {
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// ExpiryDuration sets the expired time (second) of every worker.
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// ExpiryDuration is a period for the scavenger goroutine to clean up those expired workers,
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// the scavenger scans all workers every `ExpiryDuration` and clean up those workers that haven't been
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// used for more than `ExpiryDuration`.
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ExpiryDuration time.Duration
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// PreAlloc indicates whether to make memory pre-allocation when initializing Pool.
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@ -217,6 +164,10 @@ type Options struct {
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// PanicHandler is used to handle panics from each worker goroutine.
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// if nil, panics will be thrown out again from worker goroutines.
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PanicHandler func(interface{})
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// Logger is the customized logger for logging info, if it is not set,
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// default standard logger from log package is used.
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Logger Logger
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}
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// WithOptions accepts the whole options config.
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@ -260,6 +211,13 @@ func WithPanicHandler(panicHandler func(interface{})) Option {
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opts.PanicHandler = panicHandler
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}
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}
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// WithLogger sets up a customized logger.
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func WithLogger(logger Logger) Option {
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return func(opts *Options) {
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opts.Logger = logger
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}
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}
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```
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`ants.Options`contains all optional configurations of ants pool, which allows you to customize the goroutine pool by invoking option functions to set up each configuration in `NewPool`/`NewPoolWithFunc`method.
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90
README_ZH.md
90
README_ZH.md
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@ -1,17 +1,17 @@
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<p align="center">
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<img src="https://raw.githubusercontent.com/panjf2000/logos/master/ants/logo.png"/>
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<img src="https://raw.githubusercontent.com/panjf2000/logos/master/ants/logo.png" />
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<b>Go 语言的 goroutine 池</b>
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<br/><br/>
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<a title="Build Status" target="_blank" href="https://travis-ci.com/panjf2000/ants"><img src="https://img.shields.io/travis/com/panjf2000/ants?style=flat-square&logo=travis"></a>
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<a title="Codecov" target="_blank" href="https://codecov.io/gh/panjf2000/ants"><img src="https://img.shields.io/codecov/c/github/panjf2000/ants?style=flat-square&logo=codecov"></a>
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<a title="Release" target="_blank" href="https://github.com/panjf2000/ants/releases"><img src="https://img.shields.io/github/v/release/panjf2000/ants.svg?color=161823&style=flat-square&logo=smartthings"></a>
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<a title="Tag" target="_blank" href="https://github.com/panjf2000/ants/tags"><img src="https://img.shields.io/github/v/tag/panjf2000/ants?color=%23ff8936&logo=fitbit&style=flat-square"></a>
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<a title="Build Status" target="_blank" href="https://travis-ci.com/panjf2000/ants"><img src="https://img.shields.io/travis/com/panjf2000/ants?style=flat-square&logo=travis" /></a>
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<a title="Codecov" target="_blank" href="https://codecov.io/gh/panjf2000/ants"><img src="https://img.shields.io/codecov/c/github/panjf2000/ants?style=flat-square&logo=codecov" /></a>
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<a title="Release" target="_blank" href="https://github.com/panjf2000/ants/releases"><img src="https://img.shields.io/github/v/release/panjf2000/ants.svg?color=161823&style=flat-square&logo=smartthings" /></a>
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<a title="Tag" target="_blank" href="https://github.com/panjf2000/ants/tags"><img src="https://img.shields.io/github/v/tag/panjf2000/ants?color=%23ff8936&logo=fitbit&style=flat-square" /></a>
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<br/>
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<a title="Chat Room" target="_blank" href="https://gitter.im/ants-pool/ants?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=body_badge"><img src="https://badges.gitter.im/ants-pool/ants.svg"></a>
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<a title="Go Report Card" target="_blank" href="https://goreportcard.com/report/github.com/panjf2000/ants"><img src="https://goreportcard.com/badge/github.com/panjf2000/ants?style=flat-square"></a>
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<a title="Doc for ants" target="_blank" href="https://pkg.go.dev/github.com/panjf2000/ants/v2?tab=doc"><img src="https://img.shields.io/badge/go.dev-doc-007d9c?style=flat-square&logo=read-the-docs"></a>
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<a title="Ants on Sourcegraph" target="_blank" href="https://sourcegraph.com/github.com/panjf2000/ants?badge"><img src="https://sourcegraph.com/github.com/panjf2000/ants/-/badge.svg?style=flat-square"></a>
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<a title="Mentioned in Awesome Go" target="_blank" href="https://github.com/avelino/awesome-go#goroutines"><img src="https://awesome.re/mentioned-badge-flat.svg"></a>
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<a title="Chat Room" target="_blank" href="https://gitter.im/ants-pool/ants?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=body_badge"><img src="https://badges.gitter.im/ants-pool/ants.svg" /></a>
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||||
<a title="Go Report Card" target="_blank" href="https://goreportcard.com/report/github.com/panjf2000/ants"><img src="https://goreportcard.com/badge/github.com/panjf2000/ants?style=flat-square" /></a>
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<a title="Doc for ants" target="_blank" href="https://pkg.go.dev/github.com/panjf2000/ants/v2?tab=doc"><img src="https://img.shields.io/badge/go.dev-doc-007d9c?style=flat-square&logo=read-the-docs" /></a>
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<a title="Ants on Sourcegraph" target="_blank" href="https://sourcegraph.com/github.com/panjf2000/ants?badge"><img src="https://sourcegraph.com/github.com/panjf2000/ants/-/badge.svg?style=flat-square" /></a>
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<a title="Mentioned in Awesome Go" target="_blank" href="https://github.com/avelino/awesome-go#goroutines"><img src="https://awesome.re/mentioned-badge-flat.svg" /></a>
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</p>
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[英文](README.md) | 🇨🇳中文
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@ -136,61 +136,6 @@ func main() {
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}
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```
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### 与 http server 集成
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```go
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package main
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import (
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"io/ioutil"
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"net/http"
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"github.com/panjf2000/ants/v2"
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)
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type Request struct {
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Param []byte
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Result chan []byte
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}
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func main() {
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pool, _ := ants.NewPoolWithFunc(100000, func(payload interface{}) {
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request, ok := payload.(*Request)
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if !ok {
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return
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}
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reverseParam := func(s []byte) []byte {
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for i, j := 0, len(s)-1; i < j; i, j = i+1, j-1 {
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s[i], s[j] = s[j], s[i]
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}
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return s
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}(request.Param)
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request.Result <- reverseParam
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})
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defer pool.Release()
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http.HandleFunc("/reverse", func(w http.ResponseWriter, r *http.Request) {
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param, err := ioutil.ReadAll(r.Body)
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if err != nil {
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http.Error(w, "request error", http.StatusInternalServerError)
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}
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defer r.Body.Close()
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request := &Request{Param: param, Result: make(chan []byte)}
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// Throttle the requests traffic with ants pool. This process is asynchronous and
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// you can receive a result from the channel defined outside.
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if err := pool.Invoke(request); err != nil {
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http.Error(w, "throttle limit error", http.StatusInternalServerError)
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}
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w.Write(<-request.Result)
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})
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http.ListenAndServe(":8080", nil)
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}
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```
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### Pool 配置
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```go
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@ -199,7 +144,9 @@ type Option func(opts *Options)
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// Options contains all options which will be applied when instantiating a ants pool.
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type Options struct {
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// ExpiryDuration sets the expired time (second) of every worker.
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// ExpiryDuration is a period for the scavenger goroutine to clean up those expired workers,
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// the scavenger scans all workers every `ExpiryDuration` and clean up those workers that haven't been
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// used for more than `ExpiryDuration`.
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ExpiryDuration time.Duration
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// PreAlloc indicates whether to make memory pre-allocation when initializing Pool.
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@ -217,6 +164,10 @@ type Options struct {
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// PanicHandler is used to handle panics from each worker goroutine.
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// if nil, panics will be thrown out again from worker goroutines.
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PanicHandler func(interface{})
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// Logger is the customized logger for logging info, if it is not set,
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// default standard logger from log package is used.
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Logger Logger
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}
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// WithOptions accepts the whole options config.
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@ -260,6 +211,13 @@ func WithPanicHandler(panicHandler func(interface{})) Option {
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opts.PanicHandler = panicHandler
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}
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}
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// WithLogger sets up a customized logger.
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func WithLogger(logger Logger) Option {
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return func(opts *Options) {
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opts.Logger = logger
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}
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}
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```
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通过在调用`NewPool`/`NewPoolWithFunc`之时使用各种 optional function，可以设置`ants.Options`中各个配置项的值，然后用它来定制化 goroutine pool.
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@ -15,7 +15,9 @@ func loadOptions(options ...Option) *Options {
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// Options contains all options which will be applied when instantiating a ants pool.
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type Options struct {
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// ExpiryDuration sets the expired time of every worker.
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// ExpiryDuration is a period for the scavenger goroutine to clean up those expired workers,
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// the scavenger scans all workers every `ExpiryDuration` and clean up those workers that haven't been
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// used for more than `ExpiryDuration`.
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ExpiryDuration time.Duration
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// PreAlloc indicates whether to make memory pre-allocation when initializing Pool.
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|
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8
pool.go
8
pool.go
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@ -61,8 +61,8 @@ type Pool struct {
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options *Options
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}
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// periodicallyPurge clears expired workers periodically.
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func (p *Pool) periodicallyPurge() {
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// purgePeriodically clears expired workers periodically which runs in an individual goroutine, as a scavenger.
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func (p *Pool) purgePeriodically() {
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heartbeat := time.NewTicker(p.options.ExpiryDuration)
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defer heartbeat.Stop()
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@ -133,7 +133,7 @@ func NewPool(size int, options ...Option) (*Pool, error) {
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p.cond = sync.NewCond(p.lock)
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// Start a goroutine to clean up expired workers periodically.
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go p.periodicallyPurge()
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go p.purgePeriodically()
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return p, nil
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}
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@ -187,7 +187,7 @@ func (p *Pool) Release() {
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// Reboot reboots a released pool.
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func (p *Pool) Reboot() {
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if atomic.CompareAndSwapInt32(&p.state, CLOSED, OPENED) {
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go p.periodicallyPurge()
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go p.purgePeriodically()
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}
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}
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|
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@ -63,8 +63,8 @@ type PoolWithFunc struct {
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options *Options
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}
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// periodicallyPurge clears expired workers periodically.
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func (p *PoolWithFunc) periodicallyPurge() {
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// purgePeriodically clears expired workers periodically which runs in an individual goroutine, as a scavenger.
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func (p *PoolWithFunc) purgePeriodically() {
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heartbeat := time.NewTicker(p.options.ExpiryDuration)
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defer heartbeat.Stop()
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@ -148,7 +148,7 @@ func NewPoolWithFunc(size int, pf func(interface{}), options ...Option) (*PoolWi
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p.cond = sync.NewCond(p.lock)
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// Start a goroutine to clean up expired workers periodically.
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go p.periodicallyPurge()
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go p.purgePeriodically()
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return p, nil
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}
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@ -206,7 +206,7 @@ func (p *PoolWithFunc) Release() {
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// Reboot reboots a released pool.
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func (p *PoolWithFunc) Reboot() {
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if atomic.CompareAndSwapInt32(&p.state, CLOSED, OPENED) {
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go p.periodicallyPurge()
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go p.purgePeriodically()
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}
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}
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