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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "ProcessStateWidget.h"
#include <LibCore/ProcessStatisticsReader.h>
#include <LibCore/Timer.h>
#include <LibGUI/BoxLayout.h>
#include <LibGUI/Label.h>
#include <unistd.h>
ProcessStateWidget::ProcessStateWidget(GUI::Widget* parent)
: GUI::Widget(parent)
{
set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
set_preferred_size(0, 20);
set_visible(false);
set_layout(make<GUI::HorizontalBoxLayout>());
auto pid_label_label = GUI::Label::construct("Process:", this);
pid_label_label->set_font(Gfx::Font::default_bold_font());
m_pid_label = GUI::Label::construct("", this);
auto state_label_label = GUI::Label::construct("State:", this);
state_label_label->set_font(Gfx::Font::default_bold_font());
m_state_label = GUI::Label::construct("", this);
// FIXME: This should show CPU% instead.
auto cpu_label_label = GUI::Label::construct("Times scheduled:", this);
cpu_label_label->set_font(Gfx::Font::default_bold_font());
m_cpu_label = GUI::Label::construct("", this);
auto memory_label_label = GUI::Label::construct("Memory (resident):", this);
memory_label_label->set_font(Gfx::Font::default_bold_font());
m_memory_label = GUI::Label::construct("", this);
m_timer = Core::Timer::construct(500, [this] {
refresh();
});
}
ProcessStateWidget::~ProcessStateWidget()
{
}
void ProcessStateWidget::refresh()
{
pid_t pid = tcgetpgrp(m_tty_fd);
auto processes = Core::ProcessStatisticsReader::get_all();
auto child_process_data = processes.get(pid);
if (!child_process_data.has_value())
return;
auto active_process_data = processes.get(child_process_data.value().pgid);
auto& data = active_process_data.value();
m_pid_label->set_text(String::format("%s(%d)", data.name.characters(), pid));
m_state_label->set_text(data.threads.first().state);
m_cpu_label->set_text(String::format("%d", data.threads.first().times_scheduled));
m_memory_label->set_text(String::format("%d", data.amount_resident));
}
void ProcessStateWidget::set_tty_fd(int tty_fd)
{
m_tty_fd = tty_fd;
if (m_tty_fd == -1) {
set_visible(false);
return;
}
set_visible(true);
refresh();
}
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