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 | #ifndef TENSORFLOW_CORE_KERNELS_ASSIGN_OP_H_ |
17 | #define TENSORFLOW_CORE_KERNELS_ASSIGN_OP_H_ |
18 | |
19 | #define EIGEN_USE_THREADS |
20 | |
21 | #include "third_party/eigen3/unsupported/Eigen/CXX11/Tensor" |
22 | #include "tensorflow/core/framework/op_kernel.h" |
23 | #include "tensorflow/core/framework/ref_var.h" |
24 | #include "tensorflow/core/framework/tensor_types.h" |
25 | |
26 | namespace tensorflow { |
27 | |
28 | // TODO(jeff): Get rid of use_exclusive_lock_ option |
29 | |
30 | // Computes *input[0] = input[1] |
31 | class AssignOp : public OpKernel { |
32 | public: |
33 | explicit AssignOp(OpKernelConstruction* context) : OpKernel(context) { |
34 | OP_REQUIRES_OK(context, |
35 | context->GetAttr("use_locking" , &use_exclusive_lock_)); |
36 | OP_REQUIRES_OK(context, |
37 | context->GetAttr("validate_shape" , &validate_shape_)); |
38 | OP_REQUIRES(context, IsRefType(context->input_type(0)), |
39 | errors::InvalidArgument("lhs input needs to be a ref type" )); |
40 | if (!context |
41 | ->GetAttr("_grappler_relax_allocator_constraints" , |
42 | &relax_constraints_) |
43 | .ok()) { |
44 | relax_constraints_ = false; |
45 | } |
46 | } |
47 | |
48 | void Compute(OpKernelContext* context) override { |
49 | constexpr int input_ref_index = 0; |
50 | constexpr int output_ref_index = 0; |
51 | constexpr int value_index = 1; |
52 | |
53 | auto copy = [this](OpKernelContext* cc_ctx, Tensor* lhs, |
54 | const Tensor& rhs) { Copy(cc_ctx, lhs, rhs); }; |
55 | |
56 | AssignRefVariable(context, input_ref_index, output_ref_index, value_index, |
57 | use_exclusive_lock_, validate_shape_, relax_constraints_, |
58 | copy); |
59 | } |
60 | |
61 | virtual void Copy(OpKernelContext* context, Tensor* lhs, |
62 | const Tensor& rhs) = 0; |
63 | |
64 | bool use_exclusive_lock_; |
65 | bool validate_shape_; |
66 | bool relax_constraints_; |
67 | }; |
68 | |
69 | } // end namespace tensorflow |
70 | |
71 | #endif // TENSORFLOW_CORE_KERNELS_ASSIGN_OP_H_ |
72 | |