这段go代码卡住不动了

```go package main import ( "xiyu/models" //"os" "runtime" "fmt" //"github.com/astaxie/beego/orm" ) func getInfos1(url,proxy string,cat_id int,goods_thumb string,id int,a,b chan bool) { a<-true isok :=false defer func(){ b<-isok }() //打印url fmt.Println(url) isok = true } func main() { NCPU := runtime.NumCPU() runtime.GOMAXPROCS(NCPU) models.Init() goods_url := new(models.GoodsUrl) a :=make(chan bool,10) b :=make(chan bool,1) var goods_urls []*models.GoodsUrl count ,_ := goods_url.Query().Filter("status",0).Count() for i:=0;i<=int(count)/1000;i++ { goods_url.Query().Filter("status",0).Limit(1000,i*1000).All(&goods_urls,"Cat_id","Url","Id","Img") for _,v :=range goods_urls { //循环取得v.url go getInfos1(v.Url,"",v.Cat_id,v.Img,v.Id,a,b) } } for x :=0;x < int(count); x++ { <-a <-b } } ``` 代码报 a<-true 和go getInfos1(v.Url,"",v.Cat_id,v.Img,v.Id,a,b)的错误 以下是错误信息 goroutine 3643 [chan send]: main.getInfos1(0x110e55c0, 0x1b, 0x69fbd0, 0x0, 0x21, 0x11088080, 0x33, 0x1a5 0x10fe4300, 0x10fe4340) C:/GOPATH/src/xiyu/goods.go:9 +0x43 created by main.main C:/GOPATH/src/xiyu/goods.go:32 +0x41d goroutine 3644 [chan send]: main.getInfos1(0x110e5660, 0x1b, 0x69fbd0, 0x0, 0x21, 0x11088280, 0x33, 0x1a5 0x10fe4300, 0x10fe4340) C:/GOPATH/src/xiyu/goods.go:9 +0x43 created by main.main C:/GOPATH/src/xiyu/goods.go:32 +0x41d goroutine 3645 [chan send]: main.getInfos1(0x110e5700, 0x1b, 0x69fbd0, 0x0, 0x21, 0x11088480, 0x33, 0x1a5 0x10fe4300, 0x10fe4340) C:/GOPATH/src/xiyu/goods.go:9 +0x43 created by main.main C:/GOPATH/src/xiyu/goods.go:32 +0x41d