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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
use console_static_text::ConsoleStaticText;
use deno_core::parking_lot::Mutex;
use std::sync::atomic::AtomicU64;
use std::sync::atomic::Ordering;
use std::sync::Arc;
use std::time::Duration;
use std::time::SystemTime;
use crate::util::console::console_size;
use super::renderer::ProgressBarRenderer;
use super::renderer::ProgressData;
use super::renderer::ProgressDataDisplayEntry;
#[derive(Clone, Debug)]
pub struct ProgressBarEntry {
id: usize,
pub message: String,
pos: Arc<AtomicU64>,
total_size: Arc<AtomicU64>,
draw_thread: DrawThread,
}
impl ProgressBarEntry {
pub fn position(&self) -> u64 {
self.pos.load(Ordering::Relaxed)
}
pub fn set_position(&self, new_pos: u64) {
self.pos.store(new_pos, Ordering::Relaxed);
}
pub fn total_size(&self) -> u64 {
self.total_size.load(Ordering::Relaxed)
}
pub fn set_total_size(&self, new_size: u64) {
self.total_size.store(new_size, Ordering::Relaxed);
}
pub fn finish(&self) {
self.draw_thread.finish_entry(self.id);
}
pub fn percent(&self) -> f64 {
let pos = self.pos.load(Ordering::Relaxed) as f64;
let total_size = self.total_size.load(Ordering::Relaxed) as f64;
if total_size == 0f64 {
0f64
} else {
pos / total_size
}
}
}
#[derive(Debug)]
struct InternalState {
start_time: SystemTime,
// this ensures only one draw thread is running
drawer_id: usize,
keep_alive_count: usize,
has_draw_thread: bool,
total_entries: usize,
entries: Vec<ProgressBarEntry>,
static_text: ConsoleStaticText,
renderer: Box<dyn ProgressBarRenderer>,
}
#[derive(Clone, Debug)]
pub struct DrawThread {
state: Arc<Mutex<InternalState>>,
}
impl DrawThread {
pub fn new(renderer: Box<dyn ProgressBarRenderer>) -> Self {
Self {
state: Arc::new(Mutex::new(InternalState {
start_time: SystemTime::now(),
drawer_id: 0,
keep_alive_count: 0,
has_draw_thread: false,
total_entries: 0,
entries: Vec::new(),
static_text: ConsoleStaticText::new(|| {
let size = console_size().unwrap();
console_static_text::ConsoleSize {
cols: Some(size.cols as u16),
rows: Some(size.rows as u16),
}
}),
renderer,
})),
}
}
pub fn add_entry(&self, message: String) -> ProgressBarEntry {
let mut internal_state = self.state.lock();
let id = internal_state.total_entries;
let entry = ProgressBarEntry {
id,
draw_thread: self.clone(),
message,
pos: Default::default(),
total_size: Default::default(),
};
internal_state.entries.push(entry.clone());
internal_state.total_entries += 1;
internal_state.keep_alive_count += 1;
if !internal_state.has_draw_thread {
self.start_draw_thread(&mut internal_state);
}
entry
}
fn finish_entry(&self, entry_id: usize) {
let mut internal_state = self.state.lock();
if let Ok(index) = internal_state
.entries
.binary_search_by(|e| e.id.cmp(&entry_id))
{
internal_state.entries.remove(index);
self.decrement_keep_alive(&mut internal_state);
}
}
pub fn increment_clear(&self) {
let mut internal_state = self.state.lock();
internal_state.keep_alive_count += 1;
}
pub fn decrement_clear(&self) {
let mut internal_state = self.state.lock();
self.decrement_keep_alive(&mut internal_state);
}
fn decrement_keep_alive(&self, internal_state: &mut InternalState) {
internal_state.keep_alive_count -= 1;
if internal_state.keep_alive_count == 0 {
internal_state.static_text.eprint_clear();
// bump the drawer id to exit the draw thread
internal_state.drawer_id += 1;
internal_state.has_draw_thread = false;
}
}
fn start_draw_thread(&self, internal_state: &mut InternalState) {
internal_state.drawer_id += 1;
internal_state.start_time = SystemTime::now();
internal_state.has_draw_thread = true;
let drawer_id = internal_state.drawer_id;
let internal_state = self.state.clone();
tokio::task::spawn_blocking(move || {
let mut previous_size = console_size().unwrap();
loop {
let mut delay_ms = 120;
{
let mut internal_state = internal_state.lock();
// exit if not the current draw thread
if internal_state.drawer_id != drawer_id {
break;
}
let size = console_size().unwrap();
if size != previous_size {
// means the user is actively resizing the console...
// wait a little bit until they stop resizing
previous_size = size;
delay_ms = 200;
} else if !internal_state.entries.is_empty() {
let preferred_entry = internal_state
.entries
.iter()
.find(|e| e.percent() > 0f64)
.or_else(|| internal_state.entries.iter().last())
.unwrap();
let text = internal_state.renderer.render(ProgressData {
duration: internal_state.start_time.elapsed().unwrap(),
terminal_width: size.cols,
pending_entries: internal_state.entries.len(),
total_entries: internal_state.total_entries,
display_entry: ProgressDataDisplayEntry {
message: preferred_entry.message.clone(),
position: preferred_entry.position(),
total_size: preferred_entry.total_size(),
},
percent_done: {
let mut total_percent_sum = 0f64;
for entry in &internal_state.entries {
total_percent_sum += entry.percent();
}
total_percent_sum += (internal_state.total_entries
- internal_state.entries.len())
as f64;
total_percent_sum / (internal_state.total_entries as f64)
},
});
internal_state.static_text.eprint_with_size(
&text,
console_static_text::ConsoleSize {
cols: Some(size.cols as u16),
rows: Some(size.rows as u16),
},
);
}
}
std::thread::sleep(Duration::from_millis(delay_ms));
}
});
}
}
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