fd/src/exec/job.rs

47 lines
1.7 KiB
Rust

// Copyright (c) 2017 fd developers
// Licensed under the Apache License, Version 2.0
// <LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0>
// or the MIT license <LICENSE-MIT or http://opensource.org/licenses/MIT>,
// at your option. All files in the project carrying such
// notice may not be copied, modified, or distributed except
// according to those terms.
use super::CommandTemplate;
use std::path::PathBuf;
use std::sync::mpsc::Receiver;
use std::sync::{Arc, Mutex};
use walk::WorkerResult;
/// An event loop that listens for inputs from the `rx` receiver. Each received input will
/// generate a command with the supplied command template. The generated command will then
/// be executed, and this process will continue until the receiver's sender has closed.
pub fn job(
rx: Arc<Mutex<Receiver<WorkerResult>>>,
cmd: Arc<CommandTemplate>,
out_perm: Arc<Mutex<()>>,
show_filesystem_errors: bool,
) {
loop {
// Create a lock on the shared receiver for this thread.
let lock = rx.lock().unwrap();
// Obtain the next result from the receiver, else if the channel
// has closed, exit from the loop
let value: PathBuf = match lock.recv() {
Ok(WorkerResult::Entry(val)) => val,
Ok(WorkerResult::Error(err)) => {
if show_filesystem_errors {
print_error!("{}", err);
}
continue;
}
Err(_) => break,
};
// Drop the lock so that other threads can read from the the receiver.
drop(lock);
// Generate a command and execute it.
cmd.generate_and_execute(&value, Arc::clone(&out_perm));
}
}