1 | /* Copyright 2017 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/grappler/graph_view.h" |
17 | |
18 | #include "tensorflow/core/framework/attr_value.pb.h" |
19 | #include "tensorflow/core/framework/node_def_util.h" |
20 | #include "tensorflow/core/grappler/utils.h" |
21 | |
22 | namespace tensorflow { |
23 | namespace grappler { |
24 | |
25 | int OpOutputPortIdToArgId(const NodeDef& node, const OpDef& op, int port_id) { |
26 | return OpPortIdToArgId(node, op.output_arg(), port_id); |
27 | } |
28 | |
29 | int OpInputPortIdToArgId(const NodeDef& node, const OpDef& op, int port_id) { |
30 | return OpPortIdToArgId(node, op.input_arg(), port_id); |
31 | } |
32 | |
33 | bool HasSingleFanoutNode(const GraphView& graph_view, const NodeDef* node, |
34 | int port) { |
35 | const auto output = GraphView::OutputPort(node, port); |
36 | return graph_view.GetFanout(output).size() <= 1; |
37 | } |
38 | |
39 | bool HasFanouts(const GraphView& graph_view, const NodeDef* node, int port) { |
40 | const auto output = GraphView::OutputPort(node, port); |
41 | return !graph_view.GetFanout(output).empty(); |
42 | } |
43 | |
44 | bool HasControlFanin(const GraphView& graph_view, const NodeDef* node) { |
45 | const auto control_port = GraphView::InputPort(node, Graph::kControlSlot); |
46 | return !graph_view.GetFanin(control_port).empty(); |
47 | } |
48 | |
49 | bool HasControlFanout(const GraphView& graph_view, const NodeDef* node) { |
50 | const auto control_port = GraphView::OutputPort(node, Graph::kControlSlot); |
51 | return !graph_view.GetFanout(control_port).empty(); |
52 | } |
53 | |
54 | bool HasControlFaninOrFanout(const GraphView& graph_view, const NodeDef* node) { |
55 | return HasControlFanin(graph_view, node) || |
56 | HasControlFanout(graph_view, node); |
57 | } |
58 | |
59 | } // end namespace grappler |
60 | } // end namespace tensorflow |
61 | |