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//===-- xray-graph-diff.h - XRay Graph Diff Renderer ------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Generate a DOT file to represent the difference between the function call
// graph of two differnent traces.
//
//===----------------------------------------------------------------------===//
#ifndef XRAY_GRAPH_DIFF_H
#define XRAY_GRAPH_DIFF_H
#include "xray-graph.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/XRay/Graph.h"
namespace llvm {
namespace xray {
// This class creates a graph representing the difference between two
// xray-graphs And allows you to print it to a dot file, with optional color
// coding.
class GraphDiffRenderer {
static const int N = 2;
public:
using StatType = GraphRenderer::StatType;
using TimeStat = GraphRenderer::TimeStat;
using GREdgeValueType = GraphRenderer::GraphT::EdgeValueType;
using GRVertexValueType = GraphRenderer::GraphT::VertexValueType;
struct EdgeAttribute {
std::array<const GREdgeValueType *, N> CorrEdgePtr = {};
};
struct VertexAttribute {
std::array<const GRVertexValueType *, N> CorrVertexPtr = {};
};
using GraphT = Graph<VertexAttribute, EdgeAttribute, StringRef>;
class Factory {
std::array<std::reference_wrapper<const GraphRenderer::GraphT>, N> G;
public:
template <typename... Ts> Factory(Ts &... Args) : G{{Args...}} {}
Expected<GraphDiffRenderer> getGraphDiffRenderer();
};
private:
GraphT G;
GraphDiffRenderer() = default;
public:
void exportGraphAsDOT(raw_ostream &OS, StatType EdgeLabel = StatType::NONE,
StatType EdgeColor = StatType::NONE,
StatType VertexLabel = StatType::NONE,
StatType VertexColor = StatType::NONE,
int TruncLen = 40);
const GraphT &getGraph() { return G; }
};
} // namespace xray
} // namespace llvm
#endif
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