[英]go routine dead lock?
I am new to golang
, and I am puzzled with this deadlock ( run here ) 我是golang
,对此僵局感到困惑( 在此处运行 )
package main
import (
"fmt"
"runtime"
"time"
)
func main() {
c := make(chan string)
work := make(chan int, 1)
clvl := runtime.NumCPU()
count := 0
for i := 0; i < clvl; i++ {
go func(i int) {
for jdId := range work {
time.Sleep(time.Second * 1)
c <- fmt.Sprintf("done %d", jdId)
}
}(i)
}
go func() {
for i := 0; i < 10; i++ {
work <- i
}
close(work)
}()
for resp := range c {
fmt.Println(resp, count)
count += 1
}
}
You never close c
, so your for range
loop waits forever. 您永远不会关闭c
,因此for range
循环会永远等待。 Close it like this: 像这样关闭它:
var wg sync.WaitGroup
for i := 0; i < clvl; i++ {
wg.Add(1)
go func(i int) {
defer wg.Done()
for jdId := range work {
time.Sleep(time.Second * 1)
c <- fmt.Sprintf("done %d", jdId)
}
}(i)
}
go func() {
for i := 0; i < 10; i++ {
work <- i
}
close(work)
wg.Wait()
close(c)
}()
EDIT : Fixed the panic, thanks Crast 编辑 :修复了恐慌,谢谢克雷斯特
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