1 | /* Copyright 2015 The TensorFlow Authors. All Rights Reserved. |
2 | |
3 | Licensed under the Apache License, Version 2.0 (the "License"); |
4 | you may not use this file except in compliance with the License. |
5 | You may obtain a copy of the License at |
6 | |
7 | http://www.apache.org/licenses/LICENSE-2.0 |
8 | |
9 | Unless required by applicable law or agreed to in writing, software |
10 | distributed under the License is distributed on an "AS IS" BASIS, |
11 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
12 | See the License for the specific language governing permissions and |
13 | limitations under the License. |
14 | ==============================================================================*/ |
15 | |
16 | // See docs in ../ops/io_ops.cc. |
17 | #include "tensorflow/core/kernels/save_restore_tensor.h" |
18 | |
19 | #include "tensorflow/core/framework/op_kernel.h" |
20 | #include "tensorflow/core/lib/core/errors.h" |
21 | #include "tensorflow/core/lib/gtl/array_slice.h" |
22 | #include "tensorflow/core/platform/logging.h" |
23 | #include "tensorflow/core/util/tensor_slice_reader.h" |
24 | |
25 | namespace tensorflow { |
26 | |
27 | class RestoreOp : public OpKernel { |
28 | public: |
29 | explicit RestoreOp(OpKernelConstruction* context) : OpKernel(context) { |
30 | int preferred_shard; |
31 | OP_REQUIRES_OK(context, |
32 | context->GetAttr("preferred_shard" , &preferred_shard)); |
33 | if (preferred_shard == -1) { |
34 | preferred_shard_ = checkpoint::TensorSliceReader::kLoadAllShards; |
35 | } else { |
36 | OP_REQUIRES(context, preferred_shard >= 0, |
37 | errors::InvalidArgument("Attribute 'preferred_shard' must be " |
38 | "greater or equal to -1" )); |
39 | preferred_shard_ = preferred_shard; |
40 | } |
41 | } |
42 | void Compute(OpKernelContext* context) override { |
43 | RestoreTensor(context, &checkpoint::OpenTableTensorSliceReader, |
44 | preferred_shard_, false, 0); |
45 | } |
46 | |
47 | private: |
48 | int preferred_shard_; |
49 | }; |
50 | |
51 | REGISTER_KERNEL_BUILDER(Name("Restore" ).Device(DEVICE_CPU), RestoreOp); |
52 | |
53 | class RestoreSliceOp : public OpKernel { |
54 | public: |
55 | explicit RestoreSliceOp(OpKernelConstruction* context) : OpKernel(context) { |
56 | int preferred_shard; |
57 | OP_REQUIRES_OK(context, |
58 | context->GetAttr("preferred_shard" , &preferred_shard)); |
59 | if (preferred_shard == -1) { |
60 | preferred_shard_ = checkpoint::TensorSliceReader::kLoadAllShards; |
61 | } else { |
62 | OP_REQUIRES(context, preferred_shard >= 0, |
63 | errors::InvalidArgument("Attribute 'preferred_shard' must be " |
64 | "greater or equal to -1" )); |
65 | preferred_shard_ = preferred_shard; |
66 | } |
67 | } |
68 | void Compute(OpKernelContext* context) override { |
69 | RestoreTensor(context, &checkpoint::OpenTableTensorSliceReader, |
70 | preferred_shard_, true, 0); |
71 | } |
72 | |
73 | private: |
74 | int preferred_shard_; |
75 | }; |
76 | |
77 | REGISTER_KERNEL_BUILDER(Name("RestoreSlice" ).Device(DEVICE_CPU), |
78 | RestoreSliceOp); |
79 | |
80 | } // namespace tensorflow |
81 | |