blob: d4ed8f799ac1cebeb99184f32de0493815e4f625 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
//
// Copyright © 2017 Arm Ltd. All rights reserved.
// SPDX-License-Identifier: MIT
//
#pragma once
#include "SubgraphView.hpp"
#include <functional>
#include <memory>
namespace armnn
{
class Layer;
class Graph;
/// Algorithm that splits a Graph into Subgraphs based on a filtering of layers (e.g. which layers are appropriate for
/// a certain backend). The resulting subgraphs are guaranteed to be form a DAG (i.e. there are no dependency loops).
///
/// The algorithm aims to produce as few subgraphs as possible.
class SubgraphViewSelector final
{
public:
using SubgraphViewPtr = std::unique_ptr<SubgraphView>;
using Subgraphs = std::vector<SubgraphViewPtr>;
using LayerSelectorFunction = std::function<bool(const Layer&)>;
/// Selects subgraphs from a graph based on the selector function and the algorithm.
/// Since the Subgraphs object returns modifiable pointers to the input and output slots of the graph:
/// 1) the graph/sub-graph cannot be const
/// 2) the caller needs to make sure that the Subgraphs lifetime is shorter than the parent graph's
static Subgraphs SelectSubgraphs(Graph& graph, const LayerSelectorFunction& selector);
static Subgraphs SelectSubgraphs(SubgraphView& subgraph, const LayerSelectorFunction& selector);
private:
// this is a utility class, don't construct or copy
SubgraphViewSelector() = delete;
SubgraphViewSelector(const SubgraphViewSelector&) = delete;
SubgraphViewSelector & operator=(const SubgraphViewSelector&) = delete;
};
} // namespace armnn
|
