Go by Example: Channel Synchronization

Kanallardan goroutinalar o’rtasidagi bajarilishni sinxronlash uchun foydalanishimiz mumkin. Mana goroutinaning tugashini kutish uchun bloklovchi qabul qilishdan foydalanish misoli. Bir nechta goroutinaning tugashini kutayotganingizda, WaitGroupdan foydalanishni afzal ko’rishingiz mumkin.

 
package main
 
import (
    "fmt"
    "time"
)

Bu biz goroutinada ishga tushiradigan funksiya. done kanali ushbu funksiyaning ishi tugaganini boshqa goroutinaga xabar berish uchun ishlatiladi.

 
func worker(done chan bool) {
    fmt.Print("working...")
    time.Sleep(time.Second)
    fmt.Println("done")

Ishimiz tugaganini bildirish uchun qiymat jo’natamiz.

 
    done <- true
}
 
func main() {

Worker goroutinasini ishga tushiramiz va unga xabar berish uchun kanalni beramiz.

 
    done := make(chan bool, 1)
    go worker(done)

Kanal orqali workerdan xabar olgunimizcha bloklaymiz.

 
    <-done
}
 
$ go run channel-synchronization.go      
working...done

Agar bu dasturdan <- done qatorini olib tashlasangiz, dastur worker o’z ishini tugatmasdan oldin, ba’zi hollarda esa hatto u boshlanmasidan oldin ham yakunlanishi mumkin edi.

Keyingi misol: .

mualliflar: Mark McGranaghan va Eli Bendersky | tarjima: @elchintoyirov | manba | litsenziya