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c41f13f10b
We can lose profiling timer events for a few reasons, for example disabled interrupts or system slowness. This accounts for lost time between CPU samples by adding a field lost_samples to each profiling event which tracks how many samples were lost immediately preceding the event.
50 lines
1.1 KiB
C++
50 lines
1.1 KiB
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibGUI/Model.h>
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namespace Profiler {
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class Profile;
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class SamplesModel final : public GUI::Model {
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public:
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static NonnullRefPtr<SamplesModel> create(Profile& profile)
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{
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return adopt_ref(*new SamplesModel(profile));
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}
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enum Column {
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SampleIndex,
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Timestamp,
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ProcessID,
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ThreadID,
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ExecutableName,
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LostSamples,
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InnermostStackFrame,
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__Count
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};
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virtual ~SamplesModel() override;
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virtual int row_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override;
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virtual int column_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override;
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virtual String column_name(int) const override;
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virtual GUI::Variant data(const GUI::ModelIndex&, GUI::ModelRole) const override;
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virtual void update() override;
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private:
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explicit SamplesModel(Profile&);
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Profile& m_profile;
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GUI::Icon m_user_frame_icon;
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GUI::Icon m_kernel_frame_icon;
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};
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}
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