go語言怎樣開多進程圖文講解。

標籤：

今天給大家講解下go語言開多進程。

package mainimport (    "fmt"    "time")var c chan intfunc main() {    c = make(chan int)    go waiting("coffee", 1)    go waiting("tea", 2)    fmt.Println("I,am waiting")    //time.Sleep(3 * time.Second)    <-c    <-c}func waiting(w string, sec int) {    time.Sleep(time.Duration(sec) * time.Second)    fmt.Println(w, "is ready")    c <- 1}

如果進程開的比較多，怎樣去避免去寫多個結束進程的channel，下面我來給大家發下改進版：

package mainimport (    "fmt"    "time")var c chan intfunc main() {    c = make(chan int)    go waiting("coffee", 1)    go waiting("tea1", 2)    go waiting("tea2", 3)    go waiting("tea3", 4)    go waiting("tea4", 5)    go waiting("tea5", 6)    go waiting("tea6", 7)    fmt.Println("I,am waiting")    //time.Sleep(3 * time.Second)    i := 0L:    for {        select {        case <-c:            i++            if i > 6 {                break L            }        }    }}func waiting(w string, sec int) {    time.Sleep(time.Duration(sec) * time.Second)    fmt.Println(w, "is ready")    c <- 1}

go語言怎樣開多進程圖文講解。