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33 lines
942 B
Go
33 lines
942 B
Go
// Copyright 2018, OpenCensus Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build go1.11
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package trace
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import (
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"context"
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t "runtime/trace"
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)
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func startExecutionTracerTask(ctx context.Context, name string) (context.Context, func()) {
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if !t.IsEnabled() {
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// Avoid additional overhead if
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// runtime/trace is not enabled.
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return ctx, func() {}
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}
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nctx, task := t.NewTask(ctx, name)
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return nctx, task.End
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}
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