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70 lines
1.8 KiB
C++
70 lines
1.8 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. 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,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#pragma once
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#include <memory>
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#include "arrow/util/logging.h"
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namespace arrow {
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namespace internal {
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namespace tracing {
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// Forward declaration SpanImpl.
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class SpanImpl;
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} // namespace tracing
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} // namespace internal
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namespace util {
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namespace tracing {
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class ARROW_EXPORT Span {
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public:
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using Impl = arrow::internal::tracing::SpanImpl;
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Span() = default; // Default constructor. The inner_impl is a nullptr.
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~Span(); // Destructor. Default destructor defined in tracing.cc where impl is a
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// complete type.
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Impl& Set(const Impl&);
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Impl& Set(Impl&&);
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const Impl& Get() const {
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ARROW_CHECK(inner_impl)
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<< "Attempted to dereference a null pointer. Use Span::Set before "
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"dereferencing.";
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return *inner_impl;
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}
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Impl& Get() {
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ARROW_CHECK(inner_impl)
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<< "Attempted to dereference a null pointer. Use Span::Set before "
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"dereferencing.";
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return *inner_impl;
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}
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private:
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std::unique_ptr<Impl> inner_impl;
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};
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} // namespace tracing
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} // namespace util
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} // namespace arrow
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