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Profiler: Add source code view

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This adds a new view mode to profiler which displays source lines and
samples that occured at those lines. This view can be opened via the
menu or by pressing CTRL-S.

It does this by mapping file names from DWARF to "/usr/src/serenity/..."
i.e. source code should be copied to /usr/src/serenity/Userland and
/usr/src/serenity/Kernel to be visible in this mode.

Currently *all* files contributing to the selected function are loaded
completely which could be a lot of data when dealing with lots of
inlined code.
This commit is contained in:
Stephan Unverwerth 2021-12-27 01:25:58 +01:00 • committed by Andreas Kling
parent e6df1c9988
commit cf8427b7b4
6 changed files with 315 additions and 0 deletions
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54
Userland/DevTools/Profiler/SourceModel.h Normal file
View file

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/*
* Copyright (c) 2021, Stephan Unverwerth <s.unverwerth@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibGUI/Model.h>
namespace Profiler {
class Profile;
class ProfileNode;
struct SourceLineData {
u32 event_count { 0 };
float percent { 0 };
String location;
u32 line_number { 0 };
String source_code;
};
class SourceModel final : public GUI::Model {
public:
static NonnullRefPtr<SourceModel> create(Profile& profile, ProfileNode& node)
{
return adopt_ref(*new SourceModel(profile, node));
}
enum Column {
SampleCount,
Location,
LineNumber,
SourceCode,
__Count
};
virtual int row_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override;
virtual int column_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override { return Column::__Count; }
virtual String column_name(int) const override;
virtual GUI::Variant data(GUI::ModelIndex const&, GUI::ModelRole) const override;
virtual bool is_column_sortable(int) const override { return false; }
private:
SourceModel(Profile&, ProfileNode&);
Profile& m_profile;
ProfileNode& m_node;
Vector<SourceLineData> m_source_lines;
};
}