Golang协程池ants

官方示例

package main

import (
	"fmt"
	"github.com/panjf2000/ants/v2"
	"sync"
	"sync/atomic"
	"time"
)

var sum int32

func myFunc(i interface{}) {
	n := i.(int32)
	atomic.AddInt32(&sum, n)
	fmt.Printf("run with %d\n", n)
}

func demoFunc() {
	time.Sleep(10 * time.Second)
	fmt.Println("Hello World!")
}

func main() {
	defer ants.Release()

	runTimes := 10

	// 使用公共资源池
	var wg sync.WaitGroup
	syncCalculateSum := func() {
		demoFunc()
		wg.Done()
	}
	for i := 0; i < runTimes; i++ {
		wg.Add(1)
		_ = ants.Submit(syncCalculateSum)
	}
	wg.Wait()
	fmt.Printf("running goroutines: %d\n", ants.Running())
	fmt.Printf("finish all tasks.\n")

	// 使用函数池
	// 设置10为池的容量
	p, _ := ants.NewPoolWithFunc(10, func(i interface{}) {
		myFunc(i)
		wg.Done()
	})
	defer p.Release()
	// 逐个提交任务
	for i := 0; i < runTimes; i++ {
		wg.Add(1)
		//传参
		_ = p.Invoke(int32(i))
	}
	wg.Wait()
	fmt.Printf("running goroutines: %d\n", p.Running())
	fmt.Printf("finish all tasks, result is %d\n", sum)
}

普通方式

package main

import (
	"fmt"
	"sync"

	"github.com/panjf2000/ants/v2"
)

func main() {
	// 创建一个大小为10的Goroutine池
	pool, _ := ants.NewPool(10)
	// 等待组，用于等待所有任务完成
	var wg sync.WaitGroup
	wg.Add(10)

	for i := 0; i < 10; i++ {
		// 提交任务到池中
		pool.Submit(func() {
			defer wg.Done()
			fmt.Println("Executing task")
		})
	}
	// 等待所有任务完成
	wg.Wait()
	// 关闭池
	pool.Release()
}