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 | #include "tensorflow/core/common_runtime/function_body.h" |
17 | |
18 | #include "tensorflow/core/framework/node_def_util.h" |
19 | #include "tensorflow/core/graph/graph.h" |
20 | |
21 | namespace tensorflow { |
22 | |
23 | FunctionBody::FunctionBody(const FunctionDef& f, DataTypeSlice arg_t, |
24 | DataTypeSlice ret_t, Graph* g) |
25 | : fdef(f), |
26 | graph(g), |
27 | arg_types(arg_t.begin(), arg_t.end()), |
28 | ret_types(ret_t.begin(), ret_t.end()) { |
29 | // 1. Find regular Arg/Ret nodes. |
30 | this->arg_nodes.resize(arg_types.size()); |
31 | this->ret_nodes.resize(ret_types.size()); |
32 | for (Node* n : this->graph->op_nodes()) { |
33 | gtl::InlinedVector<Node*, 4>* node_vec; |
34 | if (n->type_string() == FunctionLibraryDefinition::kRetOp || |
35 | n->type_string() == FunctionLibraryDefinition::kDeviceRetOp) { |
36 | node_vec = &this->ret_nodes; |
37 | } else if (n->type_string() == FunctionLibraryDefinition::kArgOp || |
38 | n->type_string() == FunctionLibraryDefinition::kDeviceArgOp) { |
39 | node_vec = &this->arg_nodes; |
40 | } else { |
41 | continue; |
42 | } |
43 | int index; |
44 | TF_CHECK_OK(GetNodeAttr(n->attrs(), "index" , &index)); |
45 | CHECK_LE(0, index); |
46 | CHECK_LT(index, node_vec->size()); |
47 | (*node_vec)[index] = n; |
48 | } |
49 | // 2. Find ControlRet nodes that must be always executed. |
50 | std::unordered_set<StringPiece, StringPieceHasher> control_ret_node_names; |
51 | for (const auto& control_ret : fdef.control_ret()) { |
52 | control_ret_node_names.insert(control_ret.second); |
53 | } |
54 | this->control_ret_nodes.reserve(control_ret_node_names.size()); |
55 | for (Node* n : this->graph->op_nodes()) { |
56 | if (control_ret_node_names.count(n->name()) > 0) { |
57 | this->control_ret_nodes.push_back(n); |
58 | } |
59 | } |
60 | } |
61 | |
62 | FunctionBody::~FunctionBody() { delete this->graph; } |
63 | |
64 | } // end namespace tensorflow |
65 | |