Golang : Close channel after ticker stopped example
This is an example on how to close channel after the time.NewTicker()
function - ticker stopped. i.e close the channel when all goroutines are finished.
From the documentation http://golang.org/pkg/time/#Ticker.Stop :
Stop turns off a ticker. After Stop, no more ticks will be sent. Stop does not close the channel, to prevent a read from the channel succeeding incorrectly.
IF you are looking to close the channel, the example below maybe useful to you.
package main
import (
"fmt"
"time"
)
func keepTicking(f func()) chan bool {
done := make(chan bool, 1)
go func() {
ticker := time.NewTicker(time.Duration(1) * time.Second)
defer ticker.Stop()
for {
select {
case <-ticker.C:
f()
case <-done:
fmt.Println("done")
return
}
}
}()
return done
}
func main() {
// continue ticking until 10 seconds and set done = true
done := keepTicking(func() {
fmt.Println("tick,tock.....")
})
time.Sleep(time.Duration(10) * time.Second)
// close the channel when all go routines are finished
close(done)
time.Sleep(time.Duration(10) * time.Second)
}
Output :
tick,tock.....
tick,tock.....
tick,tock.....
tick,tock.....
tick,tock.....
tick,tock.....
tick,tock.....
tick,tock.....
tick,tock.....
done
References :
https://www.socketloop.com/references/golang-time-newticker-stop-functions-and-ticker-type-example
By Adam Ng
IF you gain some knowledge or the information here solved your programming problem. Please consider donating to the less fortunate or some charities that you like. Apart from donation, planting trees, volunteering or reducing your carbon footprint will be great too.
Advertisement
Tutorials
+10.6k Fix ERROR 1045 (28000): Access denied for user 'root'@'ip-address' (using password: YES)
+5k JQuery : Calling a function inside Jquery(document) block
+13.6k Golang : Query string with space symbol %20 in between
+6.9k Golang : Join lines with certain suffix symbol example
+7.6k Golang : How to stop user from directly running an executable file?
+9.4k Golang : How to get username from email address
+10.2k Golang : Bcrypting password
+20.3k Golang : Determine if directory is empty with os.File.Readdir() function
+6.7k Golang : How to determine if request or crawl is from Google robots
+5k Golang : Calculate a pip value and distance to target profit example
+10k Golang : Get escape characters \u form from unicode characters