Complete tracker TUI

src/app.rs

@@ -4,21 +4,36 @@ use ratatui::{
     style::{Color, Style},
     widgets::{Block, Borders, Row, Table, TableState},
 };
+use std::ffi::OsStr;
 use sysinfo::System;
+use sysinfo::UpdateKind;
+use sysinfo::Users;
 
 pub struct SystemStats {
     pub sys: System,
     pub cpu_count: f32,
+    pub users: Users,
 }
 
 pub fn init_system() -> SystemStats {
     let mut sys = System::new_all();
-    sys.refresh_cpu_usage();
+    sys.refresh_all();
+    let users = Users::new_with_refreshed_list();
     let cpu_count = sys.cpus().len() as f32;
-    SystemStats { sys, cpu_count }
+    SystemStats {
+        sys,
+        cpu_count,
+        users,
+    }
 }
 
-pub fn draw_ui(f: &mut Frame, sys: &mut System, cpu_count: f32, state: &mut TableState) {
+pub fn draw_ui(
+    f: &mut Frame,
+    sys: &mut System,
+    users: &mut Users,
+    cpu_count: f32,
+    state: &mut TableState,
+) {
     let mut processes: Vec<_> = sys.processes().values().collect();
     processes.sort_by(|a, b| {
         b.cpu_usage()
@@ -30,9 +45,21 @@ pub fn draw_ui(f: &mut Frame, sys: &mut System, cpu_count: f32, state: &mut Tabl
         .iter()
         .map(|p| {
             let cpu_usage = p.cpu_usage();
+            let owner_name = if let Some(user_id) = p.user_id() {
+                if let Some(user) = users.get_user_by_id(user_id) {
+                    user.name().to_string()
+                } else {
+                    format!("UID: {}", user_id.to_string())
+                }
+            } else {
+                "Unknown".to_string()
+            };
             Row::new(vec![
                 p.pid().to_string(),
                 p.name().to_string_lossy().to_string(),
+                p.cmd().join(OsStr::new(" ")).to_string_lossy().to_string(),
+                owner_name,
+                format!("{:.1} bytes", p.memory()),
                 format!("{:.1}%", cpu_usage / cpu_count),
                 format!("{:.1}%", cpu_usage),
             ])
@@ -42,19 +69,31 @@ pub fn draw_ui(f: &mut Frame, sys: &mut System, cpu_count: f32, state: &mut Tabl
     let widths = [
         Constraint::Length(10),
         Constraint::Fill(1),
+        Constraint::Fill(1),
+        Constraint::Length(10),
+        Constraint::Length(20),
+        Constraint::Length(10),
         Constraint::Length(10),
-        Constraint::Length(15),
     ];
 
     let table = Table::new(rows, widths)
         .header(
-            Row::new(vec!["PID", "Name", "CPU %", "CPU Core %"]).style(Style::new().blue().bold()),
+            Row::new(vec![
+                "PID",
+                "Name",
+                "Command",
+                "Owner",
+                "Memory",
+                "CPU %",
+                "CPU Core %",
+            ])
+            .style(Style::new().blue().bold()),
         )
         .block(
             Block::default()
                 .borders(Borders::ALL)
                 .title(" Process Manager ")
-                .title_bottom(" Use ↑/↓ to Scroll, 'q' to Quit "),
+                .title_bottom(" Use ↑/↓ to Scroll, 'q' to Quit, 'p' to Pause Refresh "),
         )
         .row_highlight_style(Style::new().bg(Color::Cyan).fg(Color::Black).bold())
         .highlight_symbol(">> ");
@@ -66,6 +105,9 @@ pub fn refresh_system_data(sys: &mut System) {
     sys.refresh_processes_specifics(
         sysinfo::ProcessesToUpdate::All,
         true,
-        sysinfo::ProcessRefreshKind::nothing().with_cpu(),
+        sysinfo::ProcessRefreshKind::nothing()
+            .with_cpu()
+            .with_user(UpdateKind::Always)
+            .with_memory(),
     );
 }

src/main.rs

@@ -12,6 +12,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     crossterm::terminal::enable_raw_mode()?;
     let mut stdout = io::stdout();
     crossterm::execute!(stdout, crossterm::terminal::EnterAlternateScreen)?;
+    let mut paused: bool = false;
 
     let backend = CrosstermBackend::new(stdout);
     let mut terminal = Terminal::new(backend)?;
@@ -24,18 +25,27 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 
     loop {
         terminal.draw(|f| {
-            draw_ui(f, &mut stats.sys, stats.cpu_count, &mut table_state);
+            draw_ui(
+                f,
+                &mut stats.sys,
+                &mut stats.users,
+                stats.cpu_count,
+                &mut table_state,
+            );
         })?;
 
-        if last_tick.elapsed() >= tick_rate {
-            refresh_system_data(&mut stats.sys);
-            last_tick = Instant::now();
+        if !paused {
+            if last_tick.elapsed() >= tick_rate {
+                refresh_system_data(&mut stats.sys);
+                last_tick = Instant::now();
+            }
         }
 
         if event::poll(Duration::from_millis(50))? {
             if let Event::Key(key) = event::read()? {
                 match key.code {
                     KeyCode::Char('q') => break,
+                    KeyCode::Char('p') => paused = !paused,
                     KeyCode::Down => {
                         let i = match table_state.selected() {
                             Some(i) => (i + 1).min(stats.sys.processes().len() - 1),