| 1 | //===-- xray-graph-diff.h - XRay Graph Diff Renderer ------------*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // Generate a DOT file to represent the difference between the function call |
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| 10 | // graph of two differnent traces. |
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| 11 | // |
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| 12 | //===----------------------------------------------------------------------===// |
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| 13 | |
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| 14 | #ifndef XRAY_GRAPH_DIFF_H |
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| 15 | #define XRAY_GRAPH_DIFF_H |
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| 16 | |
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| 17 | #include "xray-graph.h" |
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| 18 | #include "llvm/XRay/Graph.h" |
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| 19 | |
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| 20 | namespace llvm { |
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| 21 | namespace xray { |
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| 22 | |
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| 23 | // This class creates a graph representing the difference between two |
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| 24 | // xray-graphs And allows you to print it to a dot file, with optional color |
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| 25 | // coding. |
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| 26 | class GraphDiffRenderer { |
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| 27 | static const int N = 2; |
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| 28 | |
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| 29 | public: |
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| 30 | using StatType = GraphRenderer::StatType; |
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| 31 | using TimeStat = GraphRenderer::TimeStat; |
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| 32 | |
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| 33 | using GREdgeValueType = GraphRenderer::GraphT::EdgeValueType; |
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| 34 | using GRVertexValueType = GraphRenderer::GraphT::VertexValueType; |
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| 35 | |
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| 36 | struct EdgeAttribute { |
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| 37 | std::array<const GREdgeValueType *, N> CorrEdgePtr = {}; |
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| 38 | }; |
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| 39 | |
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| 40 | struct VertexAttribute { |
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| 41 | std::array<const GRVertexValueType *, N> CorrVertexPtr = {}; |
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| 42 | }; |
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| 43 | |
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| 44 | using GraphT = Graph<VertexAttribute, EdgeAttribute, StringRef>; |
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| 45 | |
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| 46 | class Factory { |
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| 47 | std::array<std::reference_wrapper<const GraphRenderer::GraphT>, N> G; |
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| 48 | |
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| 49 | public: |
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| 50 | template <typename... Ts> Factory(Ts &... Args) : G{{Args...}} {} |
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| 51 | |
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| 52 | Expected<GraphDiffRenderer> getGraphDiffRenderer(); |
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| 53 | }; |
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| 54 | |
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| 55 | private: |
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| 56 | GraphT G; |
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| 57 | |
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| 58 | GraphDiffRenderer() = default; |
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| 59 | |
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| 60 | public: |
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| 61 | void exportGraphAsDOT(raw_ostream &OS, StatType EdgeLabel = StatType::NONE, |
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| 62 | StatType EdgeColor = StatType::NONE, |
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| 63 | StatType VertexLabel = StatType::NONE, |
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| 64 | StatType VertexColor = StatType::NONE, |
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| 65 | int TruncLen = 40); |
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| 66 | |
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| 67 | const GraphT &getGraph() { return G; } |
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| 68 | }; |
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| 69 | } // namespace xray |
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| 70 | } // namespace llvm |
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| 71 | |
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| 72 | #endif |
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| 73 | |
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