请问这段程序为什么死锁？在158行，倒数第7行，readChan.result <- countryCapitalMap这个位置。

package main import ( "fmt" "io/ioutil" "strconv" "strings" "time" ) const ( FILE = "D:/lite-workspace/writefile/test.txt" ) type UserInfo struct { id string name string company string } type ReadResult struct { test string //参数Channel flag chan string //结果Channel result chan map[string]*UserInfo } //Read file func main() { t := time.Now().UnixNano() // fd, err := os.Open(FILE) //打开文件 // if err != nil { // fmt.Println("open file error") // } // defer fd.Close() // len, err := fd.Seek(0, 2) //获取文件长度 // if err != nil { // fmt.Println("get len error") // } // fmt.Println(len) // strbyte := make([]byte, len) // fd.Seek(0, 0) //移回指针到文件开头 // fd.Read(strbyte) //读文件 //fmt.Println(string(strbyte)) dat, err := ioutil.ReadFile(FILE) //直接读文件 if err != nil { fmt.Println("Read file err") fmt.Println(string(dat)) } dat1, err1 := ioutil.ReadFile(FILE) //直接读文件 if err1 != nil { fmt.Println("Read file err") fmt.Println(string(dat1)) } splitStr := strings.Split(string(dat), "\n") splitStr1 := strings.Split(string(dat1), "\n") //for user := range splitStr{ //} //读取的数据写入map row := len(splitStr) - 1 // countryCapitalMap := map[string]*UserInfo{} // for i := 0; i < row; i++ { // /////////////// // everyUser := strings.Split(splitStr[i], "---") // /////////////// // var user1 UserInfo // var user_pointer *UserInfo // id := strings.Split(everyUser[0], ":")[1] // user1.id = id // user1.company = strings.Split(everyUser[1], ":")[1] // user1.name = strings.Split(everyUser[2], ":")[1] // user_pointer = &user1 // countryCapitalMap["key"+id] = user_pointer // } read1Chan := ReadResult{"1", make(chan string), make(chan map[string]*UserInfo)} read2Chan := ReadResult{"2", make(chan string), make(chan map[string]*UserInfo)} // strCount := len(splitStr) // var splitStr1 = make([]string, strCount) // copy(splitStr1, splitStr) go read2Memory(splitStr, 0, row/2, t, read1Chan) go read2Memory(splitStr1, row/2+1, row, t, read2Chan) readResult1 := <-read1Chan.flag readResult2 := <-read2Chan.flag readResultMap1 := <-read1Chan.result readResultMap2 := <-read2Chan.result mapT := float64(time.Now().UnixNano()-t) / (1000000 * 1000) fmt.Println(mapT) fmt.Print(readResult1, readResult2) //fmt.Println(countryCapitalMap["key10000"]) s1Chan := make(chan string) s2Chan := make(chan string) s3Chan := make(chan string) s4Chan := make(chan string) // s5Chan := make(chan string) // s6Chan := make(chan string) fmt.Println("-----" + strconv.Itoa(len(readResultMap1))) fmt.Println("result.test----" + read1Chan.test) go searchMap("244094", readResultMap1, t, s1Chan) go searchMap("6530499", readResultMap1, t, s2Chan) go searchMap("17201129", readResultMap2, t, s3Chan) go searchMap("11929833", readResultMap2, t, s4Chan) // go searchMap("7786084", countryCapitalMap, t, s5Chan) // go searchMap("5484924", countryCapitalMap, t, s6Chan) searchT := float64(time.Now().UnixNano()-t) / (1000000 * 1000) fmt.Println("AllSearchT----" + strconv.FormatFloat(searchT, 'f', -1, 64)) r1, r2, r3, r4 := <-s1Chan, <-s2Chan, <-s3Chan, <-s4Chan fmt.Print(r1, r2, r3, r4) //fmt.Println(row) //fmt.Println(len(dat)) // 'b' (-ddddp±ddd，二进制指数) // 'e' (-d.dddde±dd，十进制指数) // 'E' (-d.ddddE±dd，十进制指数) // 'f' (-ddd.dddd，没有指数) // 'g' ('e':大指数，'f':其它情况) // 'G' ('E':大指数，'f':其它情况) } func searchMap(condition string, countryCapitalMap map[string]*UserInfo, t int64, sChan chan<- string) { condition = "eyecool" + condition for userMap := range countryCapitalMap { user := *countryCapitalMap[userMap] if user.company == condition { fmt.Println(user) searchT := float64(time.Now().UnixNano()-t) / (1000000 * 1000) searchTStr := strconv.FormatFloat(searchT, 'f', -1, 64) fmt.Println(condition + "-----" + searchTStr) sChan <- searchTStr } } } func read2Memory(splitStr []string, start int, end int, t int64, readChan ReadResult) { var countryCapitalMap = make(map[string]*UserInfo) for i := start; i < end; i++ { /////////////// everyUser := strings.Split(splitStr[i], "---") /////////////// var user1 UserInfo var user_pointer *UserInfo id := strings.Split(everyUser[0], ":")[1] user1.id = id user1.company = strings.Split(everyUser[1], ":")[1] user1.name = strings.Split(everyUser[2], ":")[1] user_pointer = &user1 countryCapitalMap["key"+id] = user_pointer } fmt.Println("countryMap:" + strconv.Itoa(len(countryCapitalMap))) //fmt.Println(countryCapitalMap) // fmt.Println(&(readChan.result)) readChan.result <- countryCapitalMap readChan.test = "1111" searchT := float64(time.Now().UnixNano()-t) / (1000000 * 1000) searchTStr := strconv.FormatFloat(searchT, 'f', -1, 64) fmt.Println("read" + "-----" + searchTStr) readChan.flag <- "complete" }