272317bce2
We now have a little widget that sits above the terminal view in the build/application console. When a child process is running, we show its PID, name, scheduling counter, and amount of resident memory in a live little overview. This is not working right just yet, since we don't know how to get to the actually active PID on the TTY. Or, well, we find the active PID by looking at the PGID of our fork()ed child. This manages to find children spawned by Shell, but not children spawned by make, for instance. I need to figure out how to find those.
71 lines
2.1 KiB
C++
71 lines
2.1 KiB
C++
#include "ProcessStateWidget.h"
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#include <LibCore/CProcessStatisticsReader.h>
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#include <LibCore/CTimer.h>
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#include <LibGUI/GBoxLayout.h>
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#include <LibGUI/GLabel.h>
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ProcessStateWidget::ProcessStateWidget(GWidget* parent)
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: GWidget(parent)
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{
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set_size_policy(SizePolicy::Fill, SizePolicy::Fixed);
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set_preferred_size(0, 20);
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set_layout(make<GBoxLayout>(Orientation::Horizontal));
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auto pid_label_label = GLabel::construct("Process:", this);
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pid_label_label->set_font(Font::default_bold_font());
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m_pid_label = GLabel::construct("", this);
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auto state_label_label = GLabel::construct("State:", this);
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state_label_label->set_font(Font::default_bold_font());
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m_state_label = GLabel::construct("", this);
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// FIXME: This should show CPU% instead.
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auto cpu_label_label = GLabel::construct("Times scheduled:", this);
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cpu_label_label->set_font(Font::default_bold_font());
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m_cpu_label = GLabel::construct("", this);
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auto memory_label_label = GLabel::construct("Memory (resident):", this);
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memory_label_label->set_font(Font::default_bold_font());
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m_memory_label = GLabel::construct("", this);
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m_timer = CTimer::construct(500, [this] {
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refresh();
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});
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}
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ProcessStateWidget::~ProcessStateWidget()
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{
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}
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void ProcessStateWidget::refresh()
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{
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if (m_pid == -1) {
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m_pid_label->set_text("(none)");
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m_state_label->set_text("n/a");
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m_cpu_label->set_text("n/a");
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m_memory_label->set_text("n/a");
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return;
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}
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auto processes = CProcessStatisticsReader::get_all();
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auto child_process_data = processes.get(m_pid);
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if (!child_process_data.has_value())
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return;
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auto active_process_data = processes.get(child_process_data.value().pgid);
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auto& data = active_process_data.value();
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m_pid_label->set_text(String::format("%s(%d)", data.name.characters(), m_pid));
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m_state_label->set_text(data.state);
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m_cpu_label->set_text(String::format("%d", data.times_scheduled));
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m_memory_label->set_text(String::format("%d", data.amount_resident));
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}
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void ProcessStateWidget::set_pid(pid_t pid)
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{
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m_pid = pid;
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refresh();
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}
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