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|
package main
import (
"fmt"
"time"
)
const (
period = 300 * time.Millisecond
precision = 30 * time.Millisecond
)
func main() {
counter := 0
p := time.Now()
ticker := time.NewTicker(period)
ch := make(chan int)
go func() {
for i := 0; i < 3; i++ {
select {
case t := <-ticker.C:
counter = counter + 1
ch <- counter
if d := t.Sub(p) - period; d < -precision || d > precision {
fmt.Println("wrong delay", d)
}
p = t
}
}
ch <- 0
}()
for c := range ch {
if c == 0 {
break
}
println(c)
}
}
// Output:
// 1
// 2
// 3
|
