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44 lines
1.5 KiB
C++
44 lines
1.5 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 <cstdint>
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#include <memory>
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#include "arrow/util/macros.h"
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namespace arrow {
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namespace internal {
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// A helper function for doing memcpy with multiple threads. This is required
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// to saturate the memory bandwidth of modern cpus.
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void parallel_memcopy(uint8_t* dst, const uint8_t* src, int64_t nbytes,
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uintptr_t block_size, int num_threads);
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// A helper function for checking if two wrapped objects implementing `Equals`
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// are equal.
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template <typename T>
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bool SharedPtrEquals(const std::shared_ptr<T>& left, const std::shared_ptr<T>& right) {
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if (left == right) return true;
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if (left == NULLPTR || right == NULLPTR) return false;
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return left->Equals(*right);
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}
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} // namespace internal
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} // namespace arrow
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