go语言限制Goroutine数量

概述package main import ( "fmt" "runtime" "time") func main() { runtime.GOMAXPROCS(runtime.NumCPU()) c := make(chan bool, 100) t := time.Tick(time.Second) go func() { for { select {

package main import (	"fmt"	"runtime"	"time") func main() {	runtime.GOMAXPROCS(runtime.Numcpu())	c := make(chan bool,100)	t := time.Tick(time.Second) 	go func() {		for {			select {			case <-t:				watching()			}		}	}() 	for i := 0; i < 10000000; i++ {		c <- true		go worker(i,c)	} 	fmt.Println("Done")} func watching() {	fmt.Printf("NumGoroutine: %d\n",runtime.NumGoroutine())} func worker(i int,c chan bool) {	//fmt.Println("worker",i)	time.Sleep(100 * time.Microsecond)	<-c}

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