зеркало из https://github.com/golang/pkgsite.git
24 строки
959 B
Go
24 строки
959 B
Go
// Copyright 2019 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 xcontext is a package to offer the extra functionality we need
|
|
// from contexts that is not available from the standard context package.
|
|
package xcontext
|
|
|
|
import (
|
|
"context"
|
|
"time"
|
|
)
|
|
|
|
// Detach returns a context that keeps all the values of its parent context
|
|
// but detaches from the cancellation and error handling.
|
|
func Detach(ctx context.Context) context.Context { return detachedContext{ctx} }
|
|
|
|
type detachedContext struct{ parent context.Context }
|
|
|
|
func (v detachedContext) Deadline() (time.Time, bool) { return time.Time{}, false }
|
|
func (v detachedContext) Done() <-chan struct{} { return nil }
|
|
func (v detachedContext) Err() error { return nil }
|
|
func (v detachedContext) Value(key interface{}) interface{} { return v.parent.Value(key) }
|