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https://github.com/RGBCube/serenity
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7e77a2ec40
As threads come and go, we can't simply account for how many time slices the threads at any given point may have been using. We need to also account for threads that have since disappeared. This means we also need to track how many time slices we have expired globally. However, because this doesn't account for context switches outside of the system timer tick values may still be under-reported. To solve this we will need to track more accurate time information on each context switch. This also fixes top's cpu usage calculation which was still based on the number of context switches. Fixes #6473
96 lines
2.2 KiB
C++
96 lines
2.2 KiB
C++
/*
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* Copyright (c) 2020, 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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#include <LibCore/ProcessStatisticsReader.h>
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#include <LibGUI/FileIconProvider.h>
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#include <LibGUI/RunningProcessesModel.h>
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namespace GUI {
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NonnullRefPtr<RunningProcessesModel> RunningProcessesModel::create()
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{
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return adopt_ref(*new RunningProcessesModel);
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}
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RunningProcessesModel::RunningProcessesModel()
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{
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}
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RunningProcessesModel::~RunningProcessesModel()
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{
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}
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void RunningProcessesModel::update()
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{
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m_processes.clear();
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auto all_processes = Core::ProcessStatisticsReader::get_all();
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if (all_processes.has_value()) {
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for (auto& it : all_processes.value().processes) {
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Process process;
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process.pid = it.pid;
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process.uid = it.uid;
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process.icon = FileIconProvider::icon_for_executable(it.executable).bitmap_for_size(16);
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process.name = it.name;
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m_processes.append(move(process));
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}
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}
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did_update();
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}
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int RunningProcessesModel::row_count(const GUI::ModelIndex&) const
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{
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return m_processes.size();
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}
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int RunningProcessesModel::column_count(const GUI::ModelIndex&) const
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{
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return Column::__Count;
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}
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String RunningProcessesModel::column_name(int column_index) const
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{
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switch (column_index) {
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case Column::Icon:
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return {};
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case Column::PID:
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return "PID";
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case Column::UID:
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return "UID";
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case Column::Name:
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return "Name";
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}
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VERIFY_NOT_REACHED();
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}
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GUI::Variant RunningProcessesModel::data(const GUI::ModelIndex& index, GUI::ModelRole role) const
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{
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auto& process = m_processes[index.row()];
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if (role == ModelRole::Custom) {
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return process.pid;
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}
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if (role == ModelRole::Display) {
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switch (index.column()) {
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case Column::Icon:
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if (!process.icon)
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return GUI::Icon();
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return GUI::Icon(*process.icon);
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case Column::PID:
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return process.pid;
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case Column::UID:
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return process.uid;
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case Column::Name:
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return process.name;
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}
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VERIFY_NOT_REACHED();
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}
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return {};
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}
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}
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