9.2/includes/opentelemetry/trace/scope.h

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
 
#pragma once
 
#include "opentelemetry/context/context.h"
#include "opentelemetry/context/runtime_context.h"
#include "opentelemetry/nostd/shared_ptr.h"
#include "opentelemetry/nostd/unique_ptr.h"
#include "opentelemetry/trace/span.h"
#include "opentelemetry/trace/span_metadata.h"
#include "opentelemetry/version.h"
 
OPENTELEMETRY_BEGIN_NAMESPACE
namespace trace
{
 
class Scope final
{
public:
  Scope(const nostd::shared_ptr<Span> &span) noexcept
      : token_(context::RuntimeContext::Attach(
            context::RuntimeContext::GetCurrent().SetValue(kSpanKey, span)))
  {}
 
private:
  nostd::unique_ptr<context::Token> token_;
};
 
}  // namespace trace
OPENTELEMETRY_END_NAMESPACE