1// Licensed to the Apache Software Foundation (ASF) under one
2// or more contributor license agreements. See the NOTICE file
3// distributed with this work for additional information
4// regarding copyright ownership. The ASF licenses this file
5// to you under the Apache License, Version 2.0 (the
6// "License"); you may not use this file except in compliance
7// with the License. You may obtain a copy of the License at
8//
9// http://www.apache.org/licenses/LICENSE-2.0
10//
11// Unless required by applicable law or agreed to in writing,
12// software distributed under the License is distributed on an
13// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
14// KIND, either express or implied. See the License for the
15// specific language governing permissions and limitations
16// under the License.
17
18#ifndef ARROW_IPC_UTIL_H
19#define ARROW_IPC_UTIL_H
20
21#include <cstdint>
22
23#include "arrow/array.h"
24#include "arrow/io/interfaces.h"
25#include "arrow/status.h"
26
27namespace arrow {
28namespace ipc {
29
30// Buffers are padded to 64-byte boundaries (for SIMD)
31static constexpr int32_t kArrowAlignment = 64;
32
33// Tensors are padded to 64-byte boundaries
34static constexpr int32_t kTensorAlignment = 64;
35
36// Align on 8-byte boundaries in IPC
37static constexpr int32_t kArrowIpcAlignment = 8;
38
39static constexpr uint8_t kPaddingBytes[kArrowAlignment] = {0};
40
41static inline int64_t PaddedLength(int64_t nbytes, int32_t alignment = kArrowAlignment) {
42 return ((nbytes + alignment - 1) / alignment) * alignment;
43}
44
45} // namespace ipc
46} // namespace arrow
47
48#endif // ARROW_IPC_UTIL_H
49