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stuzer05

stuzer05 / Go context.WithCancel() example

Last active 3 months ago

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main.go Raw
1func doWork(ctx context.Context) {
2 for {
3 select {
4 case <-ctx.Done():
5 return
6 default:
7 }
8
9 time.Sleep(1 * time.Second)
10 fmt.Println("doing work...")
11 }
12}
13
14func main() {
15 bgCtx := context.Background()
16 innerCtx, cancel := context.WithCancel(bgCtx)
17
18 go doWork(innerCtx) // call goroutine
19 time.Sleep(3 * time.Second) // do work in main
20
21 // well, if `doWork` is still not done, just cancel it
22 cancel()
23}
24