blob: a3e8979c8c3e9b077cf9561f0d9d8856e8f17cfb [file] [log] [blame]
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package context_test
import (
func ExampleWithTimeout() {
// Pass a context with a timeout to tell a blocking function that it
// should abandon its work after the timeout elapses.
ctx, cancel := context.WithTimeout(context.Background(), 50*time.Millisecond)
select {
case <-time.After(1 * time.Second):
case <-ctx.Done():
fmt.Println(ctx.Err()) // prints "context deadline exceeded"
// Even though ctx should have expired already, it is good
// practice to call its cancelation function in any case.
// Failure to do so may keep the context and its parent alive
// longer than necessary.
// Output:
// context deadline exceeded