Created
November 17, 2018 18:28
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| package main | |
| import ( | |
| "fmt" | |
| "os" | |
| "os/signal" | |
| "runtime" | |
| "strings" | |
| "sync" | |
| "syscall" | |
| "time" | |
| "github.com/fatih/color" | |
| ) | |
| const ( | |
| countWorker = 200 | |
| ) | |
| func worker(wg *sync.WaitGroup, workerNum int, done chan struct{}) { | |
| defer wg.Done() | |
| text := fmt.Sprintln(strings.Repeat("█", workerNum)) | |
| fmt.Println(color.BlueString(text)) | |
| for { | |
| time.Sleep(800 * time.Millisecond) | |
| select { | |
| case <-done: | |
| fmt.Println(color.RedString(text)) | |
| return | |
| default: | |
| fmt.Println(color.GreenString(text)) | |
| runtime.Gosched() | |
| } | |
| } | |
| } | |
| func main() { | |
| stopChan := make(chan os.Signal, 1) | |
| signal.Notify(stopChan, syscall.SIGINT, syscall.SIGTERM) | |
| doneChanel := make(chan struct{}) | |
| wg := &sync.WaitGroup{} | |
| for i := 0; i < countWorker; i++ { | |
| wg.Add(1) | |
| go worker(wg, i, doneChanel) | |
| time.Sleep(100 * time.Millisecond) | |
| } | |
| go func() { | |
| select { | |
| case <-stopChan: | |
| close(doneChanel) | |
| } | |
| }() | |
| wg.Wait() | |
| } |
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