feat: prefetcher (#1061)

README.md

@@ -12,7 +12,7 @@ Yazi (means "duck") is a terminal file manager written in Rust, based on non-blo
 - 💪 **Powerful Async Task Scheduling and Management**: Provides real-time progress updates, task cancellation, and internal task priority assignment.
 - 🖼️ **Built-in Support for Multiple Image Protocols**: Also integrated with Überzug++, covering almost all terminals.
 - 🌟 **Built-in Code Highlighting and Image Decoding**: Combined with the pre-loading mechanism, greatly accelerates image and normal file loading.
-- 🔌 **Concurrent Plugin System**: UI plugins (rewriting most of the UI), functional plugins, custom previewer, and custom preloader; Just some pieces of Lua.
+- 🔌 **Concurrent Plugin System**: UI plugins (rewriting most of the UI), functional plugins, custom previewer/preloader/prefetcher; Just some pieces of Lua.
 - 📡 **Data Distribution Service**: Built on a client-server architecture (no additional server process required), integrated with a Lua-based publish-subscribe model, achieving cross-instance communication and state persistence.
 - 📦 **Package Manager**: Install plugins and themes with one command, keeping them always up to date, or pin them to a specific version.
 - 🧰 Integration with fd, rg, fzf, zoxide

cspell.json

@@ -1 +1 @@
-{"language":"en","flagWords":[],"words":["Punct","KEYMAP","splitn","crossterm","YAZI","unar","peekable","ratatui","syntect","pbpaste","pbcopy","ffmpegthumbnailer","oneshot","Posix","Lsar","XADDOS","zoxide","cands","Deque","precache","imageops","IFBLK","IFCHR","IFDIR","IFIFO","IFLNK","IFMT","IFSOCK","IRGRP","IROTH","IRUSR","ISGID","ISUID","ISVTX","IWGRP","IWOTH","IWUSR","IXGRP","IXOTH","IXUSR","libc","winsize","TIOCGWINSZ","xpixel","ypixel","ioerr","appender","Catppuccin","macchiato","gitmodules","Dotfiles","bashprofile","vimrc","flac","webp","exiftool","mediainfo","ripgrep","nvim","indexmap","indexmap","unwatch","canonicalize","serde","fsevent","Ueberzug","iterm","wezterm","sixel","chafa","ueberzugpp","️ Überzug","️ Überzug","Konsole","Alacritty","Überzug","pkgs","paru","unarchiver","pdftoppm","poppler","prebuild","singlefile","jpegopt","EXIF","rustfmt","mktemp","nanos","xclip","xsel","natord","Mintty","nixos","nixpkgs","SIGTSTP","SIGCONT","SIGCONT","mlua","nonstatic","userdata","metatable","natsort","backstack","luajit","Succ","Succ","cand","fileencoding","foldmethod","lightgreen","darkgray","lightred","lightyellow","lightcyan","nushell","msvc","aarch","linemode","sxyazi","rsplit","ZELLIJ","bitflags","bitflags","USERPROFILE","Neovim","vergen","gitcl","Renderable","preloaders","prec","imagesize","Upserting","prio","Ghostty","Catmull","Lanczos","cmds","unyank","scrolloff","headsup","unsub","uzers","scopeguard","SPDLOG","globset","filetime","magick","magick"],"version":"0.2"}
+{"words":["Punct","KEYMAP","splitn","crossterm","YAZI","unar","peekable","ratatui","syntect","pbpaste","pbcopy","ffmpegthumbnailer","oneshot","Posix","Lsar","XADDOS","zoxide","cands","Deque","precache","imageops","IFBLK","IFCHR","IFDIR","IFIFO","IFLNK","IFMT","IFSOCK","IRGRP","IROTH","IRUSR","ISGID","ISUID","ISVTX","IWGRP","IWOTH","IWUSR","IXGRP","IXOTH","IXUSR","libc","winsize","TIOCGWINSZ","xpixel","ypixel","ioerr","appender","Catppuccin","macchiato","gitmodules","Dotfiles","bashprofile","vimrc","flac","webp","exiftool","mediainfo","ripgrep","nvim","indexmap","indexmap","unwatch","canonicalize","serde","fsevent","Ueberzug","iterm","wezterm","sixel","chafa","ueberzugpp","️ Überzug","️ Überzug","Konsole","Alacritty","Überzug","pkgs","paru","unarchiver","pdftoppm","poppler","prebuild","singlefile","jpegopt","EXIF","rustfmt","mktemp","nanos","xclip","xsel","natord","Mintty","nixos","nixpkgs","SIGTSTP","SIGCONT","SIGCONT","mlua","nonstatic","userdata","metatable","natsort","backstack","luajit","Succ","Succ","cand","fileencoding","foldmethod","lightgreen","darkgray","lightred","lightyellow","lightcyan","nushell","msvc","aarch","linemode","sxyazi","rsplit","ZELLIJ","bitflags","bitflags","USERPROFILE","Neovim","vergen","gitcl","Renderable","preloaders","prec","imagesize","Upserting","prio","Ghostty","Catmull","Lanczos","cmds","unyank","scrolloff","headsup","unsub","uzers","scopeguard","SPDLOG","globset","filetime","magick","magick","prefetcher","Prework","prefetchers","PREWORKERS"],"version":"0.2","language":"en","flagWords":[]}

yazi-config/preset/yazi.toml

@@ -79,8 +79,11 @@ suppress_preload = false
 
 [plugin]
 
+prefetchers = [
+	# Mimetype
+	{ name = "*", cond = "!mime", run = "mime", prio = "high" },
+]
 preloaders = [
-	{ name = "*", cond = "!mime", run = "mime", next = true, multi = true, prio = "high" },
 	# Image
 	{ mime = "image/svg+xml", run = "magick" },
 	{ mime = "image/heic",    run = "magick" },

yazi-config/src/plugin/mod.rs

@@ -1,9 +1,11 @@
 mod plugin;
+mod prefetcher;
 mod preloader;
 mod previewer;
 
 pub use plugin::*;
+pub use prefetcher::*;
 pub use preloader::*;
 pub use previewer::*;
 
-pub const MAX_PRELOADERS: u8 = 32;
+pub const MAX_PREWORKERS: u8 = 32;

yazi-config/src/plugin/plugin.rs

@@ -3,13 +3,14 @@ use std::path::Path;
 use serde::Deserialize;
 use yazi_shared::MIME_DIR;
 
-use super::{Preloader, Previewer};
+use super::{Prefetcher, Preloader, Previewer};
-use crate::{plugin::MAX_PRELOADERS, Preset, MERGED_YAZI};
+use crate::{plugin::MAX_PREWORKERS, Preset, MERGED_YAZI};
 
 #[derive(Deserialize)]
 pub struct Plugin {
-	pub preloaders: Vec<Preloader>,
+	pub prefetchers: Vec<Prefetcher>,
-	pub previewers: Vec<Previewer>,
+	pub preloaders:  Vec<Preloader>,
+	pub previewers:  Vec<Previewer>,
 }
 
 impl Default for Plugin {
@@ -21,6 +22,12 @@ impl Default for Plugin {
 
 		#[derive(Deserialize)]
 		struct Shadow {
+			prefetchers:         Vec<Prefetcher>,
+			#[serde(default)]
+			prepend_prefetchers: Vec<Prefetcher>,
+			#[serde(default)]
+			append_prefetchers:  Vec<Prefetcher>,
+
 			preloaders:         Vec<Preloader>,
 			#[serde(default)]
 			prepend_preloaders: Vec<Preloader>,
@@ -42,36 +49,53 @@ impl Default for Plugin {
 			shadow.previewers.retain(|r| !r.any_dir());
 		}
 
+		Preset::mix(&mut shadow.prefetchers, shadow.prepend_prefetchers, shadow.append_prefetchers);
 		Preset::mix(&mut shadow.preloaders, shadow.prepend_preloaders, shadow.append_preloaders);
 		Preset::mix(&mut shadow.previewers, shadow.prepend_previewers, shadow.append_previewers);
 
-		if shadow.preloaders.len() > MAX_PRELOADERS as usize {
+		if shadow.prefetchers.len() + shadow.preloaders.len() > MAX_PREWORKERS as usize {
-			panic!("Too many preloaders");
+			panic!("Prefetchers and preloaders exceed the limit of {MAX_PREWORKERS}");
 		}
 
-		for (i, preloader) in shadow.preloaders.iter_mut().enumerate() {
+		for (i, p) in shadow.prefetchers.iter_mut().enumerate() {
-			preloader.id = i as u8;
+			p.id = i as u8;
+		}
+		for (i, p) in shadow.preloaders.iter_mut().enumerate() {
+			p.id = shadow.prefetchers.len() as u8 + i as u8;
 		}
 
-		Self { preloaders: shadow.preloaders, previewers: shadow.previewers }
+		Self {
+			prefetchers: shadow.prefetchers,
+			preloaders:  shadow.preloaders,
+			previewers:  shadow.previewers,
+		}
 	}
 }
 
 impl Plugin {
-	pub fn preloaders(
+	pub fn prefetchers(
 		&self,
 		path: &Path,
 		mime: Option<&str>,
 		f: impl Fn(&str) -> bool + Copy,
-	) -> Vec<&Preloader> {
+	) -> Vec<&Prefetcher> {
+		let is_dir = mime == Some(MIME_DIR);
+		self
+			.prefetchers
+			.iter()
+			.filter(|&p| {
+				p.cond.as_ref().and_then(|c| c.eval(f)) != Some(false)
+					&& (p.mime.as_ref().zip(mime).map_or(false, |(p, m)| p.match_mime(m))
+						|| p.name.as_ref().is_some_and(|p| p.match_path(path, is_dir)))
+			})
+			.collect()
+	}
+
+	pub fn preloaders(&self, path: &Path, mime: Option<&str>) -> Vec<&Preloader> {
 		let is_dir = mime == Some(MIME_DIR);
 		let mut preloaders = Vec::with_capacity(1);
 
 		for p in &self.preloaders {
-			if p.cond.as_ref().and_then(|c| c.eval(f)) == Some(false) {
-				continue;
-			}
-
 			if !p.mime.as_ref().zip(mime).map_or(false, |(p, m)| p.match_mime(m))
 				&& !p.name.as_ref().is_some_and(|p| p.match_path(path, is_dir))
 			{

yazi-config/src/plugin/prefetcher.rs

@@ -0,0 +1,29 @@
+use serde::Deserialize;
+use yazi_shared::{event::Cmd, Condition};
+
+use crate::{Pattern, Priority};
+
+#[derive(Debug, Deserialize)]
+pub struct Prefetcher {
+	#[serde(skip)]
+	pub id:   u8,
+	pub cond: Option<Condition>,
+	pub name: Option<Pattern>,
+	pub mime: Option<Pattern>,
+	pub run:  Cmd,
+	#[serde(default)]
+	pub prio: Priority,
+}
+
+#[derive(Debug, Clone)]
+pub struct PrefetcherProps {
+	pub id:   u8,
+	pub name: String,
+	pub prio: Priority,
+}
+
+impl From<&Prefetcher> for PrefetcherProps {
+	fn from(prefetcher: &Prefetcher) -> Self {
+		Self { id: prefetcher.id, name: prefetcher.run.name.to_owned(), prio: prefetcher.prio }
+	}
+}

yazi-config/src/plugin/preloader.rs

@@ -1,39 +1,30 @@
 use serde::Deserialize;
-use yazi_shared::{event::Cmd, Condition};
+use yazi_shared::event::Cmd;
 
 use crate::{Pattern, Priority};
 
 #[derive(Debug, Deserialize)]
 pub struct Preloader {
 	#[serde(skip)]
-	pub id:    u8,
+	pub id:   u8,
-	pub cond:  Option<Condition>,
+	pub name: Option<Pattern>,
-	pub name:  Option<Pattern>,
+	pub mime: Option<Pattern>,
-	pub mime:  Option<Pattern>,
+	pub run:  Cmd,
-	pub run:   Cmd,
 	#[serde(default)]
-	pub next:  bool,
+	pub next: bool,
 	#[serde(default)]
-	pub multi: bool,
+	pub prio: Priority,
-	#[serde(default)]
-	pub prio:  Priority,
 }
 
 #[derive(Debug, Clone)]
 pub struct PreloaderProps {
-	pub id:    u8,
+	pub id:   u8,
-	pub name:  String,
+	pub name: String,
-	pub multi: bool,
+	pub prio: Priority,
-	pub prio:  Priority,
 }
 
 impl From<&Preloader> for PreloaderProps {
 	fn from(preloader: &Preloader) -> Self {
-		Self {
+		Self { id: preloader.id, name: preloader.run.name.to_owned(), prio: preloader.prio }
-			id:    preloader.id,
-			name:  preloader.run.name.to_owned(),
-			multi: preloader.multi,
-			prio:  preloader.prio,
-		}
 	}
 }

yazi-core/src/manager/commands/open.rs

@@ -63,8 +63,8 @@ impl Manager {
 			}
 
 			done.extend(files.iter().map(|f| (f.url(), String::new())));
-			if let Err(e) = isolate::preload("mime", files, true).await {
+			if let Err(e) = isolate::prefetch("mime", files).await {
-				error!("preload in open failed: {e}");
+				error!("prefetch `mime` failed in opening: {e}");
 			}
 
 			ManagerProxy::open_do(OpenDoOpt { hovered, targets: done, interactive: opt.interactive });

yazi-core/src/manager/commands/refresh.rs

@@ -35,6 +35,6 @@ impl Manager {
 		self.hover(None);
 		self.update_paged((), tasks);
 
-		tasks.preload_sorted(&self.current().files);
+		tasks.prework_sorted(&self.current().files);
 	}
 }

yazi-core/src/manager/commands/update_files.rs

@@ -88,7 +88,7 @@ impl Manager {
 		ManagerProxy::hover(None); // Re-hover in next loop
 		ManagerProxy::update_paged(); // Update for paged files in next loop
 		if calc {
-			tasks.preload_sorted(&tab.current.files);
+			tasks.prework_sorted(&tab.current.files);
 		}
 	}
 

yazi-core/src/manager/commands/update_mimetype.rs

@@ -52,7 +52,7 @@ impl Manager {
 		self.mimetype.extend(updates);
 		self.peek(false);
 
-		tasks.preload_affected(&affected, &self.mimetype);
+		tasks.prework_affected(&affected, &self.mimetype);
 		render!();
 	}
 }

yazi-core/src/manager/commands/update_paged.rs

@@ -32,6 +32,7 @@ impl Manager {
 		}
 
 		let targets = self.current().paginate(opt.page.unwrap_or(self.current().page));
+		tasks.prefetch_paged(targets, &self.mimetype);
 		tasks.preload_paged(targets, &self.mimetype);
 	}
 }

yazi-core/src/manager/watcher.rs

@@ -117,8 +117,8 @@ impl Watcher {
 			if reload.is_empty() {
 				continue;
 			}
-			if let Err(e) = isolate::preload("mime", reload, true).await {
+			if let Err(e) = isolate::prefetch("mime", reload).await {
-				error!("preload in watcher failed: {e}");
+				error!("prefetch `mime` failed in watcher: {e}");
 			}
 		}
 	}

yazi-core/src/tab/commands/sort.rs

@@ -18,6 +18,6 @@ impl Tab {
 		self.apply_files_attrs();
 		ManagerProxy::update_paged();
 
-		tasks.preload_sorted(&self.current.files);
+		tasks.prework_sorted(&self.current.files);
 	}
 }

yazi-core/src/tasks/preload.rs

@@ -1,17 +1,15 @@
-use std::{collections::HashMap, mem};
+use std::collections::HashMap;
 
-use yazi_config::{manager::SortBy, plugin::{Preloader, MAX_PRELOADERS}, PLUGIN};
+use yazi_config::{manager::SortBy, plugin::MAX_PREWORKERS, PLUGIN};
 use yazi_shared::{fs::{File, Url}, MIME_DIR};
 
 use super::Tasks;
 use crate::folder::Files;
 
 impl Tasks {
-	pub fn preload_paged(&self, paged: &[File], mimetype: &HashMap<Url, String>) {
+	pub fn prefetch_paged(&self, paged: &[File], mimetype: &HashMap<Url, String>) {
-		let mut single_tasks = Vec::with_capacity(paged.len());
+		let mut loaded = self.scheduler.prework.loaded.lock();
-		let mut multi_tasks: [Vec<_>; MAX_PRELOADERS as usize] = Default::default();
+		let mut tasks: [Vec<_>; MAX_PREWORKERS as usize] = Default::default();
-
-		let loaded = self.scheduler.preload.rule_loaded.read();
 		for f in paged {
 			let mime = if f.is_dir() { Some(MIME_DIR) } else { mimetype.get(&f.url).map(|s| &**s) };
 			let factors = |s: &str| match s {
@@ -19,61 +17,58 @@ impl Tasks {
 				_ => false,
 			};
 
-			for rule in PLUGIN.preloaders(&f.url, mime, factors) {
+			for p in PLUGIN.prefetchers(&f.url, mime, factors) {
-				if loaded.get(&f.url).is_some_and(|x| x & (1 << rule.id) != 0) {
+				match loaded.get_mut(&f.url) {
-					continue;
+					Some(n) if *n & (1 << p.id) != 0 => continue,
-				}
+					Some(n) => *n |= 1 << p.id,
-				if rule.multi {
+					None => _ = loaded.insert(f.url.clone(), 1 << p.id),
-					multi_tasks[rule.id as usize].push(f);
-				} else {
-					single_tasks.push((rule, f));
 				}
+				tasks[p.id as usize].push(f.clone());
 			}
 		}
 
 		drop(loaded);
-		let mut loaded = self.scheduler.preload.rule_loaded.write();
+		for (i, tasks) in tasks.into_iter().enumerate() {
-
+			if !tasks.is_empty() {
-		let mut go = |preloader: &Preloader, targets: Vec<&File>| {
+				self.scheduler.prefetch_paged(&PLUGIN.prefetchers[i], tasks);
-			for &f in &targets {
-				if let Some(n) = loaded.get_mut(&f.url) {
-					*n |= 1 << preloader.id;
-				} else {
-					loaded.insert(f.url.clone(), 1 << preloader.id);
-				}
 			}
-			self.scheduler.preload_paged(preloader, targets);
-		};
-
-		#[allow(clippy::needless_range_loop)]
-		for i in 0..PLUGIN.preloaders.len() {
-			if !multi_tasks[i].is_empty() {
-				go(&PLUGIN.preloaders[i], mem::take(&mut multi_tasks[i]));
-			}
-		}
-		for (rule, target) in single_tasks {
-			go(rule, vec![target]);
 		}
 	}
 
-	pub fn preload_affected(&self, affected: &[File], mimetype: &HashMap<Url, String>) {
+	pub fn preload_paged(&self, paged: &[File], mimetype: &HashMap<Url, String>) {
+		let mut loaded = self.scheduler.prework.loaded.lock();
+		for f in paged {
+			let mime = if f.is_dir() { Some(MIME_DIR) } else { mimetype.get(&f.url).map(|s| &**s) };
+			for p in PLUGIN.preloaders(&f.url, mime) {
+				match loaded.get_mut(&f.url) {
+					Some(n) if *n & (1 << p.id) != 0 => continue,
+					Some(n) => *n |= 1 << p.id,
+					None => _ = loaded.insert(f.url.clone(), 1 << p.id),
+				}
+				self.scheduler.preload_paged(p, f);
+			}
+		}
+	}
+
+	pub fn prework_affected(&self, affected: &[File], mimetype: &HashMap<Url, String>) {
 		{
-			let mut loaded = self.scheduler.preload.rule_loaded.write();
+			let mut loaded = self.scheduler.prework.loaded.lock();
 			for f in affected {
 				loaded.remove(&f.url);
 			}
 		}
 
+		self.prefetch_paged(affected, mimetype);
 		self.preload_paged(affected, mimetype);
 	}
 
-	pub fn preload_sorted(&self, targets: &Files) {
+	pub fn prework_sorted(&self, targets: &Files) {
 		if targets.sorter().by != SortBy::Size {
 			return;
 		}
 
 		let targets: Vec<_> = {
-			let loading = self.scheduler.preload.size_loading.read();
+			let loading = self.scheduler.prework.size_loading.read();
 			targets
 				.iter()
 				.filter(|f| f.is_dir() && !targets.sizes.contains_key(&f.url) && !loading.contains(&f.url))
@@ -84,11 +79,11 @@ impl Tasks {
 			return;
 		}
 
-		let mut loading = self.scheduler.preload.size_loading.write();
+		let mut loading = self.scheduler.prework.size_loading.write();
 		for &target in &targets {
 			loading.insert(target.clone());
 		}
 
-		self.scheduler.preload_size(targets);
+		self.scheduler.prework_size(targets);
 	}
 }

yazi-plugin/preset/plugins/mime.lua

@@ -9,7 +9,7 @@ local function match_mimetype(s)
 	end
 end
 
-function M:preload()
+function M:prefetch()
 	local urls = {}
 	for _, file in ipairs(self.files) do
 		urls[#urls + 1] = tostring(file.url)

yazi-plugin/src/isolate/mod.rs

@@ -3,11 +3,13 @@
 mod entry;
 mod isolate;
 mod peek;
+mod prefetch;
 mod preload;
 mod seek;
 
 pub use entry::*;
 pub use isolate::*;
 pub use peek::*;
+pub use prefetch::*;
 pub use preload::*;
 pub use seek::*;

yazi-plugin/src/isolate/prefetch.rs

@@ -0,0 +1,33 @@
+use mlua::{ExternalError, ExternalResult, Table, TableExt};
+use tokio::runtime::Handle;
+use yazi_config::LAYOUT;
+
+use super::slim_lua;
+use crate::{bindings::{Cast, File}, elements::Rect, loader::LOADER};
+
+pub async fn prefetch(name: &str, files: Vec<yazi_shared::fs::File>) -> mlua::Result<u8> {
+	LOADER.ensure(name).await.into_lua_err()?;
+
+	let name = name.to_owned();
+	tokio::task::spawn_blocking(move || {
+		let lua = slim_lua(&name)?;
+		let plugin: Table = if let Some(b) = LOADER.read().get(&name) {
+			lua.load(b.as_ref()).call(())?
+		} else {
+			return Err("unloaded plugin".into_lua_err());
+		};
+
+		let files = files.into_iter().filter_map(|f| File::cast(&lua, f).ok()).collect::<Vec<_>>();
+		if files.is_empty() {
+			return Err("no files".into_lua_err());
+		}
+
+		plugin.raw_set("skip", 0)?;
+		plugin.raw_set("area", Rect::cast(&lua, LAYOUT.load().preview)?)?;
+		plugin.raw_set("files", files)?;
+
+		Handle::current().block_on(plugin.call_async_method("prefetch", ()))
+	})
+	.await
+	.into_lua_err()?
+}

yazi-plugin/src/isolate/preload.rs

@@ -5,11 +5,7 @@ use yazi_config::LAYOUT;
 use super::slim_lua;
 use crate::{bindings::{Cast, File}, elements::Rect, loader::LOADER};
 
-pub async fn preload(
+pub async fn preload(name: &str, file: yazi_shared::fs::File) -> mlua::Result<u8> {
-	name: &str,
-	files: Vec<yazi_shared::fs::File>,
-	multi: bool,
-) -> mlua::Result<u8> {
 	LOADER.ensure(name).await.into_lua_err()?;
 
 	let name = name.to_owned();
@@ -21,18 +17,9 @@ pub async fn preload(
 			return Err("unloaded plugin".into_lua_err());
 		};
 
-		let mut files = files.into_iter().filter_map(|f| File::cast(&lua, f).ok()).collect::<Vec<_>>();
-		if files.is_empty() {
-			return Err("no files".into_lua_err());
-		}
-
 		plugin.raw_set("skip", 0)?;
 		plugin.raw_set("area", Rect::cast(&lua, LAYOUT.load().preview)?)?;
-		if multi {
+		plugin.raw_set("file", File::cast(&lua, file)?)?;
-			plugin.raw_set("files", files)?;
-		} else {
-			plugin.raw_set("file", files.remove(0))?;
-		}
 
 		Handle::current().block_on(plugin.call_async_method("preload", ()))
 	})

yazi-scheduler/src/op.rs

@@ -1,10 +1,10 @@
-use crate::{file::FileOp, plugin::PluginOp, preload::PreloadOp};
+use crate::{file::FileOp, plugin::PluginOp, preload::PreworkOp};
 
 #[derive(Debug)]
 pub enum TaskOp {
 	File(Box<FileOp>),
 	Plugin(Box<PluginOp>),
-	Preload(Box<PreloadOp>),
+	Prework(Box<PreworkOp>),
 }
 
 impl TaskOp {
@@ -12,7 +12,7 @@ impl TaskOp {
 		match self {
 			TaskOp::File(op) => op.id(),
 			TaskOp::Plugin(op) => op.id(),
-			TaskOp::Preload(op) => op.id(),
+			TaskOp::Prework(op) => op.id(),
 		}
 	}
 }
@@ -25,6 +25,6 @@ impl From<PluginOp> for TaskOp {
 	fn from(op: PluginOp) -> Self { Self::Plugin(Box::new(op)) }
 }
 
-impl From<PreloadOp> for TaskOp {
+impl From<PreworkOp> for TaskOp {
-	fn from(op: PreloadOp) -> Self { Self::Preload(Box::new(op)) }
+	fn from(op: PreworkOp) -> Self { Self::Prework(Box::new(op)) }
 }

yazi-scheduler/src/preload/mod.rs

@@ -1,7 +1,7 @@
 #![allow(clippy::module_inception)]
 
 mod op;
-mod preload;
+mod prework;
 
 pub use op::*;
-pub use preload::*;
+pub use prework::*;

yazi-scheduler/src/preload/op.rs

@@ -1,32 +1,41 @@
 use std::sync::Arc;
 
-use yazi_config::plugin::PreloaderProps;
+use yazi_config::plugin::{PrefetcherProps, PreloaderProps};
 use yazi_shared::{fs::Url, Throttle};
 
 #[derive(Debug)]
-pub enum PreloadOp {
+pub enum PreworkOp {
-	Rule(PreloadOpRule),
+	Fetch(PreworkOpFetch),
-	Size(PreloadOpSize),
+	Load(PreworkOpLoad),
+	Size(PreworkOpSize),
 }
 
-impl PreloadOp {
+impl PreworkOp {
 	pub fn id(&self) -> usize {
 		match self {
-			Self::Rule(op) => op.id,
+			Self::Fetch(op) => op.id,
+			Self::Load(op) => op.id,
 			Self::Size(op) => op.id,
 		}
 	}
 }
 
 #[derive(Clone, Debug)]
-pub struct PreloadOpRule {
+pub struct PreworkOpFetch {
 	pub id:      usize,
-	pub plugin:  PreloaderProps,
+	pub plugin:  PrefetcherProps,
 	pub targets: Vec<yazi_shared::fs::File>,
 }
 
+#[derive(Clone, Debug)]
+pub struct PreworkOpLoad {
+	pub id:     usize,
+	pub plugin: PreloaderProps,
+	pub target: yazi_shared::fs::File,
+}
+
 #[derive(Debug)]
-pub struct PreloadOpSize {
+pub struct PreworkOpSize {
 	pub id:       usize,
 	pub target:   Url,
 	pub throttle: Arc<Throttle<(Url, u64)>>,

yazi-scheduler/src/preload/prework.rs

@@ -1,37 +1,57 @@
 use std::collections::{HashMap, HashSet};
 
 use anyhow::{anyhow, Result};
-use parking_lot::RwLock;
+use parking_lot::{Mutex, RwLock};
 use tokio::sync::mpsc;
 use tracing::error;
 use yazi_config::Priority;
 use yazi_plugin::isolate;
 use yazi_shared::fs::{calculate_size, FilesOp, Url};
 
-use super::{PreloadOp, PreloadOpRule, PreloadOpSize};
+use super::{PreworkOp, PreworkOpFetch, PreworkOpLoad, PreworkOpSize};
 use crate::{TaskOp, TaskProg, HIGH, NORMAL};
 
-pub struct Preload {
+pub struct Prework {
 	macro_: async_priority_channel::Sender<TaskOp, u8>,
 	prog:   mpsc::UnboundedSender<TaskProg>,
 
-	pub rule_loaded:  RwLock<HashMap<Url, u32>>,
+	pub loaded:       Mutex<HashMap<Url, u32>>,
 	pub size_loading: RwLock<HashSet<Url>>,
 }
 
-impl Preload {
+impl Prework {
 	pub fn new(
 		macro_: async_priority_channel::Sender<TaskOp, u8>,
 		prog: mpsc::UnboundedSender<TaskProg>,
 	) -> Self {
-		Self { macro_, prog, rule_loaded: Default::default(), size_loading: Default::default() }
+		Self { macro_, prog, loaded: Default::default(), size_loading: Default::default() }
 	}
 
-	pub async fn work(&self, op: PreloadOp) -> Result<()> {
+	pub async fn work(&self, op: PreworkOp) -> Result<()> {
 		match op {
-			PreloadOp::Rule(task) => {
+			PreworkOp::Fetch(task) => {
 				let urls: Vec<_> = task.targets.iter().map(|f| f.url()).collect();
-				let result = isolate::preload(&task.plugin.name, task.targets, task.plugin.multi).await;
+				let result = isolate::prefetch(&task.plugin.name, task.targets).await;
+				if let Err(e) = result {
+					self.fail(task.id, format!("Prefetch task failed:\n{e}"))?;
+					return Err(e.into());
+				};
+
+				let code = result.unwrap();
+				if code & 1 == 0 {
+					error!("Prefetch task `{}` returned {code}", task.plugin.name);
+				}
+				if code >> 1 & 1 != 0 {
+					let mut loaded = self.loaded.lock();
+					for url in urls {
+						loaded.get_mut(&url).map(|x| *x ^= 1 << task.plugin.id);
+					}
+				}
+				self.prog.send(TaskProg::Adv(task.id, 1, 0))?;
+			}
+			PreworkOp::Load(task) => {
+				let url = task.target.url();
+				let result = isolate::preload(&task.plugin.name, task.target).await;
 				if let Err(e) = result {
 					self.fail(task.id, format!("Preload task failed:\n{e}"))?;
 					return Err(e.into());
@@ -42,14 +62,12 @@ impl Preload {
 					error!("Preload task `{}` returned {code}", task.plugin.name);
 				}
 				if code >> 1 & 1 != 0 {
-					let mut loaded = self.rule_loaded.write();
+					let mut loaded = self.loaded.lock();
-					for url in urls {
+					loaded.get_mut(&url).map(|x| *x ^= 1 << task.plugin.id);
-						loaded.get_mut(&url).map(|x| *x ^= 1 << task.plugin.id);
-					}
 				}
 				self.prog.send(TaskProg::Adv(task.id, 1, 0))?;
 			}
-			PreloadOp::Size(task) => {
+			PreworkOp::Size(task) => {
 				let length = calculate_size(&task.target).await;
 				task.throttle.done((task.target, length), |buf| {
 					{
@@ -68,28 +86,40 @@ impl Preload {
 		Ok(())
 	}
 
-	pub async fn rule(&self, task: PreloadOpRule) -> Result<()> {
+	pub async fn fetch(&self, task: PreworkOpFetch) -> Result<()> {
 		let id = task.id;
 		self.prog.send(TaskProg::New(id, 0))?;
 
 		match task.plugin.prio {
-			Priority::Low => self.queue(PreloadOp::Rule(task), NORMAL).await?,
+			Priority::Low => self.queue(PreworkOp::Fetch(task), NORMAL).await?,
-			Priority::Normal => self.queue(PreloadOp::Rule(task), HIGH).await?,
+			Priority::Normal => self.queue(PreworkOp::Fetch(task), HIGH).await?,
-			Priority::High => self.work(PreloadOp::Rule(task)).await?,
+			Priority::High => self.work(PreworkOp::Fetch(task)).await?,
 		}
 		self.succ(id)
 	}
 
-	pub async fn size(&self, task: PreloadOpSize) -> Result<()> {
+	pub async fn load(&self, task: PreworkOpLoad) -> Result<()> {
+		let id = task.id;
+		self.prog.send(TaskProg::New(id, 0))?;
+
+		match task.plugin.prio {
+			Priority::Low => self.queue(PreworkOp::Load(task), NORMAL).await?,
+			Priority::Normal => self.queue(PreworkOp::Load(task), HIGH).await?,
+			Priority::High => self.work(PreworkOp::Load(task)).await?,
+		}
+		self.succ(id)
+	}
+
+	pub async fn size(&self, task: PreworkOpSize) -> Result<()> {
 		let id = task.id;
 
 		self.prog.send(TaskProg::New(id, 0))?;
-		self.work(PreloadOp::Size(task)).await?;
+		self.work(PreworkOp::Size(task)).await?;
 		self.succ(id)
 	}
 }
 
-impl Preload {
+impl Prework {
 	#[inline]
 	fn succ(&self, id: usize) -> Result<()> { Ok(self.prog.send(TaskProg::Succ(id))?) }
 

yazi-scheduler/src/scheduler.rs

@@ -4,17 +4,17 @@ use anyhow::Result;
 use futures::{future::BoxFuture, FutureExt};
 use parking_lot::Mutex;
 use tokio::{fs, select, sync::{mpsc::{self, UnboundedReceiver}, oneshot}, task::JoinHandle};
-use yazi_config::{open::Opener, plugin::Preloader, TASKS};
+use yazi_config::{open::Opener, plugin::{Prefetcher, Preloader}, TASKS};
 use yazi_dds::Pump;
 use yazi_shared::{event::Data, fs::{unique_path, Url}, Throttle};
 
 use super::{Ongoing, TaskProg, TaskStage};
-use crate::{file::{File, FileOpDelete, FileOpLink, FileOpPaste, FileOpTrash}, plugin::{Plugin, PluginOpEntry}, preload::{Preload, PreloadOpRule, PreloadOpSize}, process::{Process, ProcessOpBg, ProcessOpBlock, ProcessOpOrphan}, TaskKind, TaskOp, HIGH, LOW, NORMAL};
+use crate::{file::{File, FileOpDelete, FileOpLink, FileOpPaste, FileOpTrash}, plugin::{Plugin, PluginOpEntry}, preload::{Prework, PreworkOpFetch, PreworkOpLoad, PreworkOpSize}, process::{Process, ProcessOpBg, ProcessOpBlock, ProcessOpOrphan}, TaskKind, TaskOp, HIGH, LOW, NORMAL};
 
 pub struct Scheduler {
 	pub file:    Arc<File>,
 	pub plugin:  Arc<Plugin>,
-	pub preload: Arc<Preload>,
+	pub prework: Arc<Prework>,
 	pub process: Arc<Process>,
 
 	micro:       async_priority_channel::Sender<BoxFuture<'static, ()>, u8>,
@@ -32,7 +32,7 @@ impl Scheduler {
 		let mut scheduler = Self {
 			file:    Arc::new(File::new(macro_tx.clone(), prog_tx.clone())),
 			plugin:  Arc::new(Plugin::new(macro_tx.clone(), prog_tx.clone())),
-			preload: Arc::new(Preload::new(macro_tx.clone(), prog_tx.clone())),
+			prework: Arc::new(Prework::new(macro_tx.clone(), prog_tx.clone())),
 			process: Arc::new(Process::new(prog_tx.clone())),
 
 			micro:   micro_tx,
@@ -218,25 +218,40 @@ impl Scheduler {
 		self.plugin.macro_(PluginOpEntry { id, name, args }).ok();
 	}
 
-	pub fn preload_paged(&self, preloader: &Preloader, targets: Vec<&yazi_shared::fs::File>) {
+	pub fn prefetch_paged(&self, prefetcher: &Prefetcher, targets: Vec<yazi_shared::fs::File>) {
 		let id = self.ongoing.lock().add(
 			TaskKind::Preload,
-			format!("Run preloader `{}` with {} target(s)", preloader.run.name, targets.len()),
+			format!("Run prefetcher `{}` with {} target(s)", prefetcher.run.name, targets.len()),
 		);
 
-		let plugin = preloader.into();
+		let plugin = prefetcher.into();
-		let targets = targets.into_iter().cloned().collect();
+		let prework = self.prework.clone();
-		let preload = self.preload.clone();
 		_ = self.micro.try_send(
 			async move {
-				preload.rule(PreloadOpRule { id, plugin, targets }).await.ok();
+				prework.fetch(PreworkOpFetch { id, plugin, targets }).await.ok();
 			}
 			.boxed(),
 			NORMAL,
 		);
 	}
 
-	pub fn preload_size(&self, targets: Vec<&Url>) {
+	pub fn preload_paged(&self, preloader: &Preloader, target: &yazi_shared::fs::File) {
+		let id =
+			self.ongoing.lock().add(TaskKind::Preload, format!("Run preloader `{}`", preloader.run.name));
+
+		let plugin = preloader.into();
+		let target = target.clone();
+		let prework = self.prework.clone();
+		_ = self.micro.try_send(
+			async move {
+				prework.load(PreworkOpLoad { id, plugin, target }).await.ok();
+			}
+			.boxed(),
+			NORMAL,
+		);
+	}
+
+	pub fn prework_size(&self, targets: Vec<&Url>) {
 		let throttle = Arc::new(Throttle::new(targets.len(), Duration::from_millis(300)));
 		let mut ongoing = self.ongoing.lock();
 
@@ -245,10 +260,10 @@ impl Scheduler {
 			let target = target.clone();
 			let throttle = throttle.clone();
 
-			let preload = self.preload.clone();
+			let prework = self.prework.clone();
 			_ = self.micro.try_send(
 				async move {
-					preload.size(PreloadOpSize { id, target, throttle }).await.ok();
+					prework.size(PreworkOpSize { id, target, throttle }).await.ok();
 				}
 				.boxed(),
 				NORMAL,
@@ -329,7 +344,7 @@ impl Scheduler {
 	) -> JoinHandle<()> {
 		let file = self.file.clone();
 		let plugin = self.plugin.clone();
-		let preload = self.preload.clone();
+		let prework = self.prework.clone();
 
 		let prog = self.prog.clone();
 		let ongoing = self.ongoing.clone();
@@ -349,7 +364,7 @@ impl Scheduler {
 						let result = match op {
 							TaskOp::File(op) => file.work(*op).await,
 							TaskOp::Plugin(op) => plugin.work(*op).await,
-							TaskOp::Preload(op) => preload.work(*op).await,
+							TaskOp::Prework(op) => prework.work(*op).await,
 						};
 
 						if let Err(e) = result {