go程控制

package main
import (
	"context"
	"fmt"
	"time"
	"runtime"
)
func test(ctx context.Context,cancelFunc func())  {
	var i int
	for {
		select {
		case <-ctx.Done():
			fmt.Println("test done....")
			return
		default:
			fmt.Printf("执行第%d次go程\n",i)
			if i == 7{
				cancelFunc()
				fmt.Println("9999999999")
				return
			}
			i++
			time.Sleep(time.Second)
		}

	}
	fmt.Println("go程执行完毕！")
}

func main() {
	ctx, cancel := context.WithCancel(context.Background())
	go test(ctx,cancel)

	go func(context.Context) {
		ticker := time.NewTicker(1 * time.Second)
		for {
			select {
			case <-ctx.Done():
				fmt.Println("done....")
				return
			case <-ticker.C:
				fmt.Println("------aaaaaaaa-------")
				time.Sleep(time.Second)
				fmt.Println("------go程结束--------------")
			}

		}
		runtime.Goexit()

	}(ctx)
	time.Sleep(20*time.Second)
	fmt.Println("-----333333333-----")
	//for{
	//	runtime.GC()
	//}
}