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 | |
27 | namespace arrow { |
28 | namespace ipc { |
29 | |
30 | // Buffers are padded to 64-byte boundaries (for SIMD) |
31 | static constexpr int32_t kArrowAlignment = 64; |
32 | |
33 | // Tensors are padded to 64-byte boundaries |
34 | static constexpr int32_t kTensorAlignment = 64; |
35 | |
36 | // Align on 8-byte boundaries in IPC |
37 | static constexpr int32_t kArrowIpcAlignment = 8; |
38 | |
39 | static constexpr uint8_t kPaddingBytes[kArrowAlignment] = {0}; |
40 | |
41 | static 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 | |