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Merge branch 'threadpool'
This commit is contained in:
Ben S
commit
8c1e6d0799
11
Cargo.lock
generated
11
Cargo.lock
generated
@ -4,7 +4,7 @@ version = "0.2.0"
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dependencies = [
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"ansi_term 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
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"bitflags 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
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"datetime 0.2.0",
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"datetime 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
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"getopts 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
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"git2 0.2.11 (git+https://github.com/alexcrichton/git2-rs.git)",
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"libc 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
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@ -13,6 +13,7 @@ dependencies = [
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"num_cpus 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
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"number_prefix 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
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"pad 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
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"threadpool 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
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"unicode-width 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
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"users 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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@ -34,7 +35,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "datetime"
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version = "0.2.0"
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version = "0.2.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"locale 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
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"num 0.1.25 (registry+https://github.com/rust-lang/crates.io-index)",
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@ -239,6 +241,11 @@ dependencies = [
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"rand 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "threadpool"
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version = "0.1.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "tz"
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version = "0.2.0"
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@ -17,6 +17,7 @@ natord = "1.0.7"
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num_cpus = "*"
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number_prefix = "0.2.3"
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pad = "0.1.1"
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threadpool = "*"
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unicode-width = "*"
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users = "0.4.0"
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55
src/main.rs
55
src/main.rs
@ -1,5 +1,5 @@
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#![feature(collections, convert, core, exit_status, file_type, fs_ext, fs_mode)]
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#![feature(metadata_ext, raw_ext, scoped, symlink_metadata)]
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#![feature(metadata_ext, raw_ext, symlink_metadata)]
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extern crate ansi_term;
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extern crate datetime;
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@ -10,6 +10,7 @@ extern crate natord;
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extern crate num_cpus;
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extern crate number_prefix;
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extern crate pad;
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extern crate threadpool;
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extern crate users;
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extern crate unicode_width;
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@ -19,8 +20,9 @@ extern crate git2;
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use std::env;
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use std::fs;
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use std::path::{Component, Path, PathBuf};
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use std::sync::mpsc::{channel, sync_channel};
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use std::thread;
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use threadpool::ThreadPool;
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use std::sync::mpsc::channel;
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use dir::Dir;
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use file::File;
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@ -36,6 +38,7 @@ mod options;
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mod output;
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mod term;
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#[cfg(not(test))]
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struct Exa<'dir> {
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count: usize,
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@ -56,15 +59,13 @@ impl<'dir> Exa<'dir> {
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}
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fn load(&mut self, files: &[String]) {
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// Separate the user-supplied paths into directories and files.
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// Files are shown first, and then each directory is expanded
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// and listed second.
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let is_tree = self.options.dir_action.is_tree() || self.options.dir_action.is_as_file();
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let total_files = files.len();
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// Denotes the maxinum number of concurrent threads
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let (thread_capacity_tx, thread_capacity_rs) = sync_channel(8 * num_cpus::get());
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// Communication between consumer thread and producer threads
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enum StatResult<'dir> {
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@ -73,39 +74,17 @@ impl<'dir> Exa<'dir> {
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Error
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}
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let (results_tx, results_rx) = channel();
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// Spawn consumer thread
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let _consumer = thread::scoped(move || {
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for _ in 0..total_files {
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// Make room for more producer threads
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let _ = thread_capacity_rs.recv();
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// Receive a producer's result
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match results_rx.recv() {
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Ok(result) => match result {
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StatResult::File(file) => self.files.push(file),
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StatResult::Dir(path) => self.dirs.push(path),
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StatResult::Error => ()
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},
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Err(_) => unreachable!(),
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}
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self.count += 1;
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}
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});
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let pool = ThreadPool::new(8 * num_cpus::get());
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let (tx, rx) = channel();
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for file in files.iter() {
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let tx = tx.clone();
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let file = file.clone();
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let results_tx = results_tx.clone();
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// Block until there is room for another thread
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let _ = thread_capacity_tx.send(());
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// Spawn producer thread
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thread::spawn(move || {
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pool.execute(move || {
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let path = Path::new(&*file);
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let _ = results_tx.send(match fs::metadata(&path) {
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let _ = tx.send(match fs::metadata(&path) {
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Ok(metadata) => {
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if !metadata.is_dir() {
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StatResult::File(File::with_metadata(metadata, &path, None, false))
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@ -124,6 +103,16 @@ impl<'dir> Exa<'dir> {
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});
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});
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}
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// Spawn consumer thread
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for result in rx.iter().take(total_files) {
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match result {
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StatResult::File(file) => self.files.push(file),
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StatResult::Dir(path) => self.dirs.push(path),
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StatResult::Error => ()
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}
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self.count += 1;
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}
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}
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fn print_files(&self) {
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