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llvm-mirror/tools/llvm-xray/xray-graph-diff.h
Chandler Carruth ae65e281f3 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00

74 lines
2.1 KiB
C++

//===-- 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