package main
import (
"sync"
"time"
"log"// "github.com/sirupsen/logrus"
)
func job(wg *sync.WaitGroup, name string, sleepSecond time.Duration) {
defer wg.Done()
time.Sleep(time.Second*sleepSecond)
log.Print(name + " done")
}
func main() {
log.Print("hello world")
var wg sync.WaitGroup
wg.Add(3)
go job(&wg, "job1", 1)
go job(&wg, "job2", 2)
go job(&wg, "job3", 1)
wg.Wait()
log.Print("all job done")
}
go 等待所有 goroutine 结束示例 sync waitgroup
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转载自blog.csdn.net/wangjunsheng/article/details/80886318
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