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Worker Pool
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| package main | |
| import ( | |
| "fmt" | |
| "runtime" | |
| "strings" | |
| "time" | |
| ) | |
| const goroutinesNum = 3 | |
| func startWorker(workerNum int, in <-chan string) { | |
| for input := range in { | |
| fmt.Printf(formatWork(workerNum, input)) | |
| runtime.Gosched() // попробуйте закомментировать | |
| } | |
| printFinishWork(workerNum) | |
| } | |
| func main() { | |
| runtime.GOMAXPROCS(0) // попробуйте с 0 (все доступные) и 1 | |
| worketInput := make(chan string, 2) // попробуйте увеличить размер канала | |
| for i := 0; i < goroutinesNum; i++ { | |
| go startWorker(i, worketInput) | |
| } | |
| months := []string{"Январь", "Февраль", "Март", | |
| "Апрель", "Май", "Июнь", | |
| "Июль", "Август", "Сентябрь", | |
| "Октябрь", "Ноябрь", "Декабрь", | |
| } | |
| for _, monthName := range months { | |
| worketInput <- monthName | |
| } | |
| close(worketInput) // попробуйте закомментировать | |
| time.Sleep(time.Millisecond) | |
| } | |
| func formatWork(in int, input string) string { | |
| return fmt.Sprintln(strings.Repeat(" ", in), "█", | |
| strings.Repeat(" ", goroutinesNum-in), | |
| "th", in, | |
| "recieved", input) | |
| } | |
| func printFinishWork(in int) { | |
| fmt.Println(strings.Repeat(" ", in), "█", | |
| strings.Repeat(" ", goroutinesNum-in), | |
| "===", in, | |
| "finished") | |
| } |
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