1/* Copyright 2015 The TensorFlow Authors. All Rights Reserved.
2
3Licensed under the Apache License, Version 2.0 (the "License");
4you may not use this file except in compliance with the License.
5You may obtain a copy of the License at
6
7 http://www.apache.org/licenses/LICENSE-2.0
8
9Unless required by applicable law or agreed to in writing, software
10distributed under the License is distributed on an "AS IS" BASIS,
11WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12See the License for the specific language governing permissions and
13limitations under the License.
14==============================================================================*/
15
16#include <algorithm>
17#include <cmath>
18
19#include "tensorflow/core/framework/attr_value.pb.h"
20#include "tensorflow/core/framework/ops_util.h"
21#include "tensorflow/core/lib/core/errors.h"
22#include "tensorflow/core/lib/strings/str_util.h"
23#include "tensorflow/core/util/padding.h"
24
25namespace tensorflow {
26
27Eigen::PaddingType BrainPadding2EigenPadding(Padding padding) {
28 switch (padding) {
29 case Padding::VALID:
30 return Eigen::PADDING_VALID;
31 case Padding::SAME:
32 return Eigen::PADDING_SAME;
33 case Padding::EXPLICIT:
34 LOG(FATAL) << "Eigen does not have explicit padding enum " // Crash OK
35 "value";
36 }
37 return Eigen::PADDING_SAME; // Prevent compiler warning about missing return
38}
39
40Status GetBroadcastSize(const int index, const int in_size, const int ksize,
41 const int stride, const int pad_size, int* bindex,
42 int* bsize) {
43 // Cannot have index beyond the input size.
44 if (index * stride > in_size) {
45 return errors::InvalidArgument(
46 "index * stride must be less than or equal to input size");
47 }
48 *bindex = index * stride;
49 *bsize = ksize;
50 if (*bindex < pad_size) {
51 // If the current index is in the padding area, start broadcast from index
52 // 0 with broadcast size reduced by padding size.
53 *bsize = ksize + *bindex - pad_size;
54 *bindex = 0;
55 } else {
56 // Otherwise, start broadcast from current index reduced by padding size.
57 *bindex -= pad_size;
58 }
59 if (*bindex + ksize > in_size) {
60 *bsize = std::min((in_size - *bindex), ksize);
61 }
62 return OkStatus();
63}
64
65string SanitizeThreadSuffix(string suffix) {
66 string clean;
67 for (int i = 0; i < suffix.size(); ++i) {
68 const char ch = suffix[i];
69 if ((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') ||
70 (ch >= '0' && ch <= '9') || ch == '_' || ch == '-') {
71 clean += ch;
72 } else {
73 clean += '_';
74 }
75 }
76 return clean;
77}
78
79} // namespace tensorflow
80