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Diffstat (limited to 'vendor/golang.org/x/net/trace/trace_go17.go')
-rw-r--r--vendor/golang.org/x/net/trace/trace_go17.go21
1 files changed, 21 insertions, 0 deletions
diff --git a/vendor/golang.org/x/net/trace/trace_go17.go b/vendor/golang.org/x/net/trace/trace_go17.go
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1// Copyright 2017 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5// +build go1.7
6
7package trace
8
9import "context"
10
11// NewContext returns a copy of the parent context
12// and associates it with a Trace.
13func NewContext(ctx context.Context, tr Trace) context.Context {
14 return context.WithValue(ctx, contextKey, tr)
15}
16
17// FromContext returns the Trace bound to the context, if any.
18func FromContext(ctx context.Context) (tr Trace, ok bool) {
19 tr, ok = ctx.Value(contextKey).(Trace)
20 return
21}